Journal articles: 'DesignBuilder'

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Boafo, Fred Emond, Jong-Gwon Ahn, Jun-Tae Kim, and Jin-Hee Kim. "Computing Thermal Bridge of VIP in Building Retrofits using DesignBuilder." Energy Procedia 78 (November 2015): 400–405. http://dx.doi.org/10.1016/j.egypro.2015.11.683.

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Pimentel, Breno Pontes, Andréa Teresa Riccio Barbosa, and Marcelo De Miranda Reis. "Integração entre BIM e simulação termoenergética para obtenção de ENCE de uma edificação do exército brasileiro." Revista Ibero-Americana de Ciências Ambientais 12, no. 1 (September 15, 2020): 232–48. http://dx.doi.org/10.6008/cbpc2179-6858.2021.001.0020.

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No Brasil, o Programa Nacional de Eficiência Energética em Edificações promove, juntamente com o INMETRO, a avaliação de eficiência energética das edificações por meio da Etiqueta Nacional de Conservação de Energia (ENCE). O regulamento que define os métodos para avaliação energética, no âmbito das edificações públicas, está sendo atualizado, passando a ser denominado Instrução Normativa INMETRO para Classe de Eficiência Energética de Edificações Comerciais, de Serviços e Públicas (INI-C). Para atender Atos Normativos do Governo Federal, os projetos de obras do Exército Brasileiro devem obter ENCE Nível 'A' e devem ser elaborados utilizando a metodologia BIM. Na INI-C, há um método que utiliza simulação termoenergética de edificações para sua classificação. O objetivo desse trabalho, portanto, é avaliar a possibilidade de fazer interoperabilidade entre o projeto elaborado em Revit e os softwares utilizados para simulação, indicando estratégias a serem seguidas nesse processo. Para isso, foi realizada uma análise energética de um pavilhão militar pelo método de simulação da INI-C, utilizando três combinações de softwares: modelagem da edificação no ScketchUp e no OpenStudio, caracterização e simulação no EnergyPlus; modelagem, caracterização e simulação da edificação no DesignBuilder; e utilização do projeto em Revit para caracterização e simulação no DesignBuilder, após processo de interoperabilidade. O consumo energético anual simulado na condição real das três modelagens foi, em média, 32.243,44 kWh com desvio máximo de 1,00% entre as modelagens. Na condição de referência, 80.118,71 kWh com desvio máximo de 0,01%. Em todas, obteve-se ENCE Geral Classe 'A', com média de 59,76% de economia energética. A modelagem que utiliza interoperabilidade entre Revit e DesignBuilder foi mais vantajosa, com economia de tempo no processo de avaliação e excelente precisão (desvio máximo de 1,00% em relação às demais). Para usufruir desse potencial, há de se seguir algumas recomendações no processo de interoperabilidade, apresentadas nesse trabalho.

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Kim, Shin-Hye, Young-Hoon Kwak, and Chang-Sung Kim. "The Analysis on Energy Performance of Collective Housing using ECO2 and DesignBuilder Softwares." KIEAE Journal 18, no. 5 (October 31, 2018): 47–54. http://dx.doi.org/10.12813/kieae.2018.18.5.047.

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Cárdenas, J., G. Osma, C. Caicedo, A. Torres, S. Sánchez, and G. Ordóñez. "Building energy analysis of Electrical Engineering Building from DesignBuilder tool: calibration and simulations." IOP Conference Series: Materials Science and Engineering 138 (July 2016): 012013. http://dx.doi.org/10.1088/1757-899x/138/1/012013.

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de la Torre, S., and C. Yousif. "Evaluation of Chimney Stack Effect in a New Brewery Using DesignBuilder-energyPlus Software." Energy Procedia 62 (2014): 230–35. http://dx.doi.org/10.1016/j.egypro.2014.12.384.

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Pimentel, Breno Pontes, Andréa Teresa Riccio Barbosa, and Mayara Dias de Souza. "ANÁLISE DE MÉTODOS DE INTEGRAÇÃO ENTRE BIM E SIMULAÇÃO TERMO ENERGÉTICA DE EDIFICAÇÕES MILITARES." Revista Gestão & Sustentabilidade Ambiental 9 (February 21, 2020): 125. http://dx.doi.org/10.19177/rgsa.v9e02020125-146.

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O objetivo deste artigo é analisar métodos de integração da plataforma Building information Modeling (BIM) no processo de simulação termo energética de edificações militares, para obtenção de Etiqueta Nacional de Conservação de Energia (ENCE) pelo Regulamento Técnico da Qualidade para o Nível de Eficiência Energética de Edificações (RTQ-C). A justificativa se dá pelo fato de o Exército Brasileiro (EB) ser obrigado a obter ENCE Nível “A” e a utilizar BIM em seus projetos, conformes normativas e leis brasileiras expressas no trabalho. Primeiro, buscou-se utilizar o Autodesk Revit para realizar a simulação, que é o software adotado pelo EB para elaboração de projetos em BIM, mais especificamente os plug-ins Energy Analysis e Green Building Studio. Devido a limitações encontradas, uma segunda fase procurou maneiras de fazer interoperabilidade entre Autodesk Revit e softwares de simulação, como o EnergyPlus, o Integrated Environmental Solutions Virtual Environment (IES-VE) e o DesignBuilder. Dentre essas opções, concluiu-se que o uso do Revit interoperável com DesignBuilder é mais adequado à análise de projetos do EB. Por fim, foi explicado como se dá a interoperabilidade entre esses dois últimos softwares e como se processará a simulação para obtenção de ENCE.

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Mikučionienė, Rūta, and Vygantas Žėkas. "ENERGIJOS ŠALTINIŲ PARINKIMO ĮTAKA PASTATO ENERGINIAM NAUDINGUMUI / IMPACT OF ENERGY SOURCES SELECTION FOR ENERGY PERFOMANCE OF BUILDING." Mokslas - Lietuvos ateitis 10 (July 5, 2018): 1–6. http://dx.doi.org/10.3846/mla.2018.3248.

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The article analyzes energy supply alternatives for administrative nearly zero energy building in Kaunas. Alternative energy production systems such as biofuel boiler, condensing boiler, heat pumps (air-water and groundwater), solar photovoltaic, solar collectors and combinations of these systems are analysed. The simulation of analysed building energy demands has been made using DesignBuilder modelling software and modelling of energy production alternatives has been performed using energyPRO software. In order to determine the optimal energy production alternative, the combinations of technologies are compared by energetic and ecological indicators and influence of each combination on the energy performance class is assessed. Santrauka Vis griežtėjantys Europos Sąjungos reikalavimai pastatų sektoriuje reikalauja efektyvesnių ir ekologiškesnių sprendimų aprūpinant pastatus energija, todėl būtina ieškoti geriausių aprūpinimo energija variantų juos įvertinant keliais kriterijais. Tiriamos administracinio beveik nulinės energijos pastato šios aprūpinimo energija technologijos: biokuro katilas, kondensacinis dujų katilas, šilumos siurbliai (gruntas–vanduo ir oras–vanduo), šalčio mašina, centralizuoti šilumos tinklai, saulės elementai ir saulės kolektoriai. Pastato poreikiai modeliuojami DesignBuilder, o aprūpinimo energija technologijų deriniai modeliuojami energyPRO modeliavimo programa. Siekiant nustatyti optimalų aprūpinimo energija variantą, technologijų deriniai yra lyginami pagal energinį ir ekologinį rodiklius ir įvertinama kiekvieno derinio įtaka pastato energinio naudingumo klasei.

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Fernández Antón, Leonidas, Jessica López Palomar, Fernando Martín Consuegra, Carmen Alonso, and Ignacio Oteiza. "BIM interoperability with Revit2015 and BPS with Designbuilder. A case study for an existing building = Interoperabilidad entre BIM con Revit2015 y BPS con Designbuilder. Estudio de caso en una edificación existente." Building & Management 3, no. 2 (August 1, 2019): 34. http://dx.doi.org/10.20868/bma.2019.2.3922.

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Albatayneh, Aiman, Haya Atieh, Mustafa Jaradat, Murad Al-Omary, Maha Zaquot, Adel Juaidi, Ramez Abdallah, and Francisco Manzano-Agugliaro. "The Impact of Modern Artificial Lighting on the Optimum Window-to-Wall Ratio of Residential Buildings in Jordan." Applied Sciences 11, no. 13 (June 24, 2021): 5888. http://dx.doi.org/10.3390/app11135888.

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Energy savings gained through natural lighting could be offset by the loss of energy through windows; therefore, the target of this study is to examine the effects of enhancing the efficiency of lighting systems on the optimum window-to-wall ratio (WWR) of Jordanian residential structures. This research proposes the hypothesis that the WWR of residential structures that contain artificial lighting systems with increased efficiency will be lower than buildings in which solar lighting is provided. The energy simulation tool, DesignBuilder (DesignBuilder Software Ltd, Stroud, UK) was used to simulate an intricate model showing a standard Jordanian residential building with a size of 130 m2. The study offers useful guidance regarding the optimum WWR for key decisionmakers when designing energy-efficient residential structures in the context of Jordan. By considering the balance between gains and losses in solar heat and light gain to exploit energy from solar sources with no reverse effects, while making comparisons between different WWR situations, the findings indicate that the typical WWR for residential structures in Jordan that have efficient Light Emitting Diode (LED) systems of lighting installed could be between 25% and 30%, which is lower than the highest WWR stipulated by the ASHRAE standards.

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Abba, Habu Yusuf, Roshida Abdul Majid, Muhammad Hamdan Ahmed, and Olutobi Gbenga Ayegbusi. "VALIDATION OF DESIGNBUILDER SIMULATION ACCURACY USING FIELD MEASURED DATA OF INDOOR AIR TEMPERATURE IN A CLASSROOM BUILDING." Journal of Tourism, Hospitality and Environment Management 7, no. 27 (March 8, 2022): 171–78. http://dx.doi.org/10.35631/jthem.727014.

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Studies have shown that a very wide range of parameters affect thermal comfort of building occupants. Heat transfer through the roofs has been identified as one of the causes of overheating in building interiors. Building Performance Simulation tools can be used to determine appropriate roof design parameters with optimum thermal performance in tropical climates like Nigeria. However, ensuring the reliability of the simulation results is essential for both occupants and designers. Therefore, this study seeks to verify and validate the accuracy of simulation results of DesignBuilder as a simulation tool for the present research works on roof thermal performance. The study primarily focuses on the impact of roof design on the air temperature in the indoor learning environment. Validation is examined by comparing the measured daily indoor air temperature of Kofar Wambai Secondary School Classroom, Bauchi city data and the simulation results. Comparative analysis indicate that the % deviation of field measured and simulated results for the tested days (18th and 21st September, 2018) were 2.39% and 1.25% respectively. The R2 results indicated 99% and 75% correlation between the simulated and measured indoor temperature on the tested days.These results agreed with the recommendations of a study by (Andelkovic et al, 2016) which reported that the marginal value of R2 for measurements and simulations validation is R2 ≥ 75%. Therefore, DesignBuilder can be employed to evaluate roof thermal performance as well as predict indoor air temperature of classroom buildings.

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Džiugaitė-Tumėnienė, Rasa, and Milena Medineckienė. "OPTIMISATION OF BUILDING ENERGY SYSTEM TECHNOLOGY CONFIGURATION USING MULTI-CRITERIA DECISION MAKING METHODS / DAUGIAKRITERIŲ METODŲ TAIKYMAS RACIONALIAM PASTATO ENERGETINĖS SISTEMOS TECHNOLOGIJŲ DERINIUI NUSTATYTI." Mokslas - Lietuvos ateitis 5, no. 4 (November 25, 2013): 410–22. http://dx.doi.org/10.3846/mla.2013.65.

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This article presents the evaluation and optimization algorithm of the building energy system. Two main objectives have been achieved: the optimal configuration of the building energy system has been defined, which minimizes the use of non-renewable sources and reduces the environmental impact of the building. Energy demand for the house has been simulated employing DesignBuilder software. Five configurations of technologies for the building energy system have been chosen and simulated applying Polysun software in order to define the seasonal energy efficiency of the generators of each configuration. Multi-criteria decision making methods SAW (Simple Additive Weight), COPRAS (COmplex PRoportion ASsessment) and MEW (Multiplicative Exponential Weighting) have been used for finding the optimal decision on this case study. Article in Lithuanian. Santrauka Pateikiamas mažai energijos vartojančio gyvenamojo namo energetinės sistemos vertinimo ir optimizavimo algoritmas. Šio tyrimo metu, siekiant nustatyti racionalų realiai pritaikomą pastato energetinės sistemos technologijų derinį, įgyvendinti du pagrindiniai tikslai: parinktas derinys, kurį taikant maksimaliai išnaudojami atsinaujinantieji energijos ištekliai ir sumažinamos sistemos išmetamų CO2 dujų emisijos. DesignBuilder kompiuterine programa atliktas energinis modeliavimas pastato energijos reikmėms nustatyti. Esamam gyvenamajam namui parinkti penki energetinės sistemos technologijų deriniai. Atliktas derinių modeliavimas Polysun programa, nustatytas kiekvieno derinio generatoriaus sezoninis energinis efektyvumas. Įvairiapusiškai racionaliam sprendimui priimti buvo taikyti daugiakriterio vertinimo metodai: SAW (Simple Additive Weight), COPRAS (COmplex PRoportion ASsessment) ir MEW (Multiplicative Exponential Weighting).

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Popescu, Lelia Letitia, Razvan Stefan Popescu, and Tiberiu Catalina. "Improving the Energy Efficiency of an Existing Building by Dynamic Numerical Simulation." Applied Sciences 11, no. 24 (December 20, 2021): 12150. http://dx.doi.org/10.3390/app112412150.

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Nowadays, the enhancement of the existing building stock energy performance is a priority. To promote building energy renovation, the European Committee asks Member States to define retrofit strategies, finding cost-effective solutions. This research aims to investigate the relationship between the initial characteristics of an existing residential buildings and different types of retrofit solutions in terms of final/primary energy consumption and CO2 emissions. A multi-objective optimization has been carried out using experimental data in DesignBuilder dynamic simulation tool.

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Bergero, S., and A. Chiari. "Validation and calibration of dynamic energy models: energy audit of a public building." Journal of Physics: Conference Series 2116, no. 1 (November 1, 2021): 012107. http://dx.doi.org/10.1088/1742-6596/2116/1/012107.

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Abstract Detailed buildings energy audits require dynamic simulation models based on hourly input data. This paper presents the calibration and validation of an office building energy model for the heating and cooling services. Simulation are carried out by DesignBuilder software. Measured hourly heating and cooling energy supplied by the generation system are used for the calibration of the model. Employee behaviour with reference to occupancy profiles and indoor temperature settings is also considered. A good agreement between measured and simulated data is obtained for both heating and cooling seasons.

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Seputra, Jackobus Ade Prasetya. "EVALUASI PERFORMA VENTILASI ALAMI PADA DESAIN BUKAAN RUANG KELAS UNIVERSITAS ATMA JAYA YOGYAKARTA." Jurnal Arsitektur KOMPOSISI 10, no. 3 (May 1, 2017): 149. http://dx.doi.org/10.24002/jars.v10i3.1111.

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Abstract: Education is an important sector of a nation toward better future. Conducive classroom with well designed room ventilation would encourage occupants in implementing effective teaching and learning activities. Research was conducted to figure out classroom performance and optimization of natural ventilation which was occurred in Engineering Faculty of UAJY represented by the classroom number 2406 as case study. Research is focused on classroom ventilation elements by examining window’s dimension, occupant’s adaptive behavior, opening types, and glass type at windward side. This research implements rationalistic method by utilizing computer simulation software DesignBuilder complemented with CFD in order to analyze and deduce information obtained primarily by field measurement and other relevant literatures. Results generated by DesignBuilder show that changes in ventilation area at external windows have significant influence over room’s ventilation performance. CFD (Computational Fluid Dynamics) experiments were conducted by examining opening types shown on room’s vertical section drawing, opening positions, overhangs, and external louvre types. Results show that experiments conducted by replacing the bottom layer of fixed windows with operable windows has significant effect in improving ventilation performance. Variation on overhangs only produce little impact, yet experiments on external louvres prove that the best type is horizontal louvre. Optimization done by studying above variables is capable to increase ventilation performance up to 800% in examined classroom.Keywords: ventilation, optimization, room openings, computer simulationAbstrak: Sektor pendidikan adalah tulang punggung suatu bangsa demi menuju masa depan yang lebih baik. Ruang kelas yang berkualitas dan kondusif dengan perencanaan sistem ventilasi dalam ruang yang baik bagi kegiatan belajar mengajar akan membantu tercapainya tujuan tersebut. Penelitian ini dilakukan untuk mengetahui sejauh mana performa ventilasi alami ruang dengan studi kasus Ruang Kelas 2406 Gedung Fakultas Teknik UAJY dan bagaimana bentuk optimasinya. Penelitian berfokus pada elemen bukaan dengan berbagai dimensi jendela, pengaturan adaptif penghuni, jenis bukaan ventilasi pada jendela, serta jenis kaca jendela pada sisi windward (angin datang). Metode simulasi komputer diperkuat dengan pengukuran lapangan menjadi alat bantu menakar dan mengoptimalisir kebutuhan ventilasi alami melalui berbagai variasi desain bukaan. Hasil studi dengan DesignBuilder memperlihatkan bahwa variabel luasan ventilasi pada jendela (“external window open”) memiliki pengaruh besar terhadap performa ventilasi alami dalam ruang. Studi dengan CFD (Computational Fluid Dynamics) berfokus pada model bukaan ruang, yaitu model bukaan pada potongan vertikal ruang, posisi bukaan, tipe teritisan (“overhang”) serta kerai (“louvre”) eksternal. Eksperimen pada posisi bukaan inlet menunjukkan bahwa perubahan jendela mati menjadi jendela hidup pada lapis bawah menghasilkan performa ventilasi lebih baik. Studi teritisan tidak memiliki pengaruh besar, sedangkan studi kerai membuktikan bahwa jenis kerai terbaik adalah kerai horisontal. Optimasi ini mampu meningkatkan performa ventilasi hingga 800% pada studi kasus.Kata kunci: ventilasi, optimasi, bukaan ruang, simulasi komputer

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Li, Da, and Yi Zong. "External Windows Selection in Hot-Summer and Cold-Winter Areas." Applied Mechanics and Materials 448-453 (October 2013): 1301–7. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1301.

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Building energy conservation is a research hotspot at present. In this paper, using energy simulation software DesignBuilder, we analyzed the influence of different external window materials on energy consumption of residential buildings and finally studied the energy saving rate and economical efficiency. The economical efficiency was analyzed from two aspects: the difference of net present value and the pay back period. The result shows that Low-e insulating glazing is good at both energy-saving potential and economic benefits. This paper provides a basis for the external window selection in hot summer and cold winter areas like Wuhan.

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Perwita Sari, Dany, and Yun-shang Chiou. "Energy Saving Potential from Shading Design for Residential House in Rural Area." MATEC Web of Conferences 164 (2018): 01007. http://dx.doi.org/10.1051/matecconf/201816401007.

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There are some architectural factors in the energy saving design of residential houses in Taiwan. In addition, in rural area, window glazing is a key factor to reducing electricity. For these purposes, a simulation model of exterior shading has been done in this study. Various types of shading devices have been analysed and compared in terms of energy savings. Simulation analysis by DesignBuilder reveals that shading devices has substantial impact to minimizing energy consumption. The results derived in this paper could provide useful suggestions for the shading design of residential buildings at rural area in Taiwan.

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Streckienė, Giedrė, and Elena Polonis. "ANALYSIS OF ENERGY DEMAND FOR LOW-ENERGY MULTI-DWELLING BUILDINGS OF DIFFERENT CONFIGURATION / SKIRTINGOS KONFIGŪRACIJOS MAŽAENERGIŲ DAUGIABUČIŲ PASTATŲ ENERGIJOS POREIKIŲ TYRIMAS." Mokslas – Lietuvos ateitis 6, no. 4 (October 24, 2014): 414–20. http://dx.doi.org/10.3846/mla.2014.57.

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To meet the goals established by Directive 2010/31/EU of the European Parliament and of the Council on the energy performance of buildings, the topics of energy efficiency in new and old buildings must be solved. Research and development of new energy solutions and technology are necessary for increasing energy performance of buildings. Three low-energy multi-dwelling buildings have been modelled and analyzed in the presented study. All multi-dwelling houses are made of similar single-family house cells. However, multi-dwelling buildings are of different geometry, flat number and height. DesignBuilder software was used for simulating and determining heating, cooling and electricity demand for buildings. Three different materials (silicate, ceramic and clay concrete blocks) as bearing constructions of external walls have been analyzed. To decrease cooling demand for buildings, the possibility of mounting internal or external louvers has been considered. Primary energy savings for multi-dwelling buildings using passive solar measures have been determined. Norint pasiekti Europos Sąjungos direktyvos 2010/31/EB tikslus dėl pastatų energinio naudingumo, reikia spręsti energijos efektyvumo klausimus naujų ir esamų pastatų srityje. Naujų energinių sprendinių ir technologijų tyrimai bei plėtra būtini norint padidinti pastatų energinį naudingumą. Šiame tyrime modeliuojami ir analizuojami trys mažaenergiai daugiabučiai pastatai. Visi jie sudaryti iš vienodo dydžio butų, tačiau pastatai tarpusavyje skiriasi geometrija, butų skaičiumi ir aukštingumu. Siekiant nustatyti ir išnagrinėti pastatų šilumos, vėsos ir elektros energijos poreikius, naudotasi DesignBuilder programa. Visų daugiabučių pastatų atvejais nagrinėjamos trys skirtingos išorės sienų laikančiųjų konstrukcijų medžiagos: silikatiniai, keraminiai ir keramzitbetonio blokeliai. Siekiant sumažinti vėsos poreikį pastatuose taip pat buvo analizuojama galimybė sumontuoti vidines arba išorines žaliuzes. Nustatyti sutaupytieji pirminės energijos kiekiai daugiabučių pastatų atvejams taikant pasyviąsias apsaugos nuo saulės priemones.

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Kovac, Martin, and Katarina Knizova. "Indoor Environment State of Classrooms Situated in the Loft Spaces of Civil Engineering Faculty TU in Kosice – Dynamic Analysis Using Design Builder." Advanced Materials Research 649 (January 2013): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amr.649.77.

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A purpose of this submission is a dynamic analysis of indoor environment on the suitably chosen classrooms, which are situated in loft spaces of Civil Engineering Faculty TU of Kosice. The evaluation was doing by using energy simulation tool DesignBuilder. In this submission there are compared different modes of natural ventilation during a day, with or without night ventilation. The next subject of presented analysis is to consider the installation of the exterior shading elements and their influence on a modification of an operative temperature in classrooms. The purpose of the whole submission is to obtain a dynamic view of indoor environment changes that are determined by internal and external factors.

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Lapinskienė, Vilūnė, and Vytautas Martinaitis. "The Development of Conceptual Building Design Technology, Using Quality Function Deployment and Axiomatic Design." Mokslas - Lietuvos ateitis 9, no. 4 (September 11, 2017): 462–69. http://dx.doi.org/10.3846/mla.2017.1059.

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Understanding issues early in the integrated design process is important, as this is when designers and engineers are able to have the largest impact on the final product. In this article the technology of conceptual architectural design for low energy buildings is proposed to address this issue. Here two methods – Quality function Deployment and Axiomatic design are used to develop the conception and to eliminate the main disadvantages of traditional building design. The integration of BIM, energy modelling (DesignBuilder) help to highlight the issue of energy efficiency at the early stage of building design, resulting in effective and more to posed requirements orientated design process.

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Balbis-Morejón, Milen, Juan J. Cabello-Eras, Javier M. Rey-Hernández, and Francisco J. Rey-Martínez. "Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building." Sustainability 13, no. 14 (July 6, 2021): 7527. http://dx.doi.org/10.3390/su13147527.

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This paper presents an energy performance assessment on an educational building in Barranquilla, Colombia. The electricity consumption performance was assessed using the software DesignBuilder for two different Air Conditioning (AC) systems. The current electricity intensity is 215.3 kWh/m2-year and centralized AC systems with individual fan coils and a water chiller share 66% of the total consumption and lighting at 16%. The simulation of the AC technology change to Variable Refrigerant Flow (VRF) resulted in an improvement of 38% in AC energy intensity with 88 kWh/m2-year and significant savings in electricity consumption and life-cycle cost of AC systems in buildings.

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Ahmed, Payman Sahbah, Manar Nazar Ahmed, and Samal Osman Saied. "Effect of carbon reinforcements on selected properties of mortar." World Journal of Engineering 17, no. 4 (June 6, 2020): 543–51. http://dx.doi.org/10.1108/wje-01-2020-0040.

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Purpose The purpose of this research is using materials to improve the thermal insulation, and reducing the cost. A large amount of energy is consumed by masonary due to cooling and heating. Adding material with certain percentages to the building materials is one of the ways to improve the thermal insulation, and these additives should keep as much as possible the mechanical properties of the building materials. Carbon additives are one of commonly used materials to masonry materials. In spite of the many advantages of using carbon fibers and carbon nano tubes (CNTs) to the cementitious materials, they are very expansive and their thermal conductivity is high. Design/methodology/approach In this research charcoal (which is a product of burning process) with very low thermal conductivity and cost in the form of micro particles will be used with mortar and compared with short carbon fibers and multiwall carbon nanotubes (MWCNTs) via thermal conductivity, density and compressive strength tests. This research includes also an effort to build a model of building to evaluate the thermal insulation of the materials used in the practical part. The main building design and performance simulation tool in this research is DesignBuilder. Findings Results showed that adding micro charcoal particles to mortar resulted in improving the thermal insulation and decrease the rate of reduction in the compressive strength compared to other additives, while adding short carbon fibers resulted in improving the thermal insulation and decrease the compressive strength. Adding MWCNT to the mortar had a negative effect on mechanical and physical properties, i.e. compressive strength, density and thermal insulation. Originality/value This paper uses DesignBuilder software to design a model of building made from the materials used in the practical part to predict and evaluate the thermal insulation.

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Curpek, Jakub, and Jozef Hraska. "Simulation Study on Thermal Performance of a Ventilated PV Façade Coupled with PCM." Applied Mechanics and Materials 861 (December 2016): 167–74. http://dx.doi.org/10.4028/www.scientific.net/amm.861.167.

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This paper presents a dynamic thermal model based on DesignBuilder simulation software platform, for a simple office building model with an integrated ventilated PV façade/solar air collector system in climatic conditions of Bratislava, Slovakia. Thermodynamic simulation has been applied in order to express thermal performance of a ventilated PV façade coupled with phase change material through the whole reference year. Attention is focused on simplified approaches which capture the important elements of the problem. The results of simulation show that natural ventilation of PV façade with added phase change material have ability decrease temperatures of PV panel during extreme days more than 20 °C and shift time of peak temperature even more than 5 hours.

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Stejskalová, Kateřina, and Nikola Vavřínová. "Assessment of the Summer Thermal Stability of the Attic Room Using Two Different Software." Civil and Environmental Engineering 16, no. 2 (December 1, 2020): 360–69. http://dx.doi.org/10.2478/cee-2020-0036.

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AbstractThis paper presents the calculations of the summer thermal stability of a critical room of the given building. In this case, the critical room of the building is an attic room. Using two different software (SIMULACE and DesignBuilder), the summer thermal stability of the attic room was evaluated according to the Czech standard ČSN 73 0540-2 [1]. This standard compares the calculated and required value of the maximum internal temperature in the summer period. The results from both software were compared with the Czech standard and also with each other. The resulting temperature courses in the interior differ by a few Celsius degrees. In conclusion, the causes of different results are discussed as well as the advantages and disadvantages of both software.

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Kovac, Martin, and Katarina Kovacova. "Analysis of Night-Time Pre-Cooling in a School Building." Applied Mechanics and Materials 887 (January 2019): 443–50. http://dx.doi.org/10.4028/www.scientific.net/amm.887.443.

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The content of this paper is a theoretical case study of a school building where the impact of night pre-cooling on operative temperature during summer period is analyzed. The classroom under pitched roof was selected for case study purposes. There are glass surfaces on roof and in external wall. We compare two types of building constructions. On the one hand side there is the wooden lightweight construction. On the other hand side there is the heavyweight construction made of reinforced concrete. The mechanical ventilation system provides for the required air change rate in classroom during whole day. The results from energy simulation show positive impact of night pre-cooling in combination with heavyweight building construction on maximum operative temperature in classroom during summer period. The results are output from dynamic energy simulation tool DesignBuilder.

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Fazelpour, Farivar, Niloufar Ziasistani, Parsa Nazari, Pouria Nazari, and Nastaran Ziasistani. "Techno-Economic Assessment of BIPV Systems in Three Cities of Iran." Proceedings 2, no. 23 (November 2, 2018): 1474. http://dx.doi.org/10.3390/proceedings2231474.

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In all over the world, huge parts of energy are consumed by buildings. Building integrated photovoltaic (BIPV) systems have attracted much attention with the purpose of providing energy demand of buildings. This paper introduces the examinations of BIPV system on a residential building under different climatic conditions of Iran by considering different PV modules. The building orientation has been analysed in order to find higher efficiency rate of PV modules through DesignBuilder. It was found the maximum rate of energy generation for all three cities occurs in south side of the building. Also for Tehran and Tabriz the minimum ratio of energy consumption is at the angle of 180° while for Bandar Abas it is in north side. Moreover, applying Cd-Te modules contribute to reducing payback time.

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Vitkauskaitė, Rasa, and Sabina Paulauskaitė. "CHANGES IN ENERGY DEMAND FOR A PARTIALLY GLAZED GREENHOUSE / ENERGIJOS POREIKIŲ KITIMAS IŠ DALIES ĮSTIKLINTAME ŠILTNAMYJE." Mokslas - Lietuvos ateitis 5, no. 4 (December 31, 2012): 513–17. http://dx.doi.org/10.3846/mla.2012.82.

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The article analyzes changes in energy demand for a greenhouse. The worked out solution to the construction of the building is a partially glazed greenhouse having a glazed roof and open vertical barriers. Design Builder software has been applied for analytical calculations and greenhouse modelling as well as for introducing changes in annual energy demand and establishing temperature variations and regime. The paper reviews the obtained results and diagrams, performs analysis and draws conclusions. Santrauka Straipsnyje nagrinėjamas energijos poreikių kitimas šiltnamyje. Pasirinktas šiltnamio konstrukcinis sprendimas – iš dalies įstiklintas šiltnamis. Tai toks šiltnamio variantas, kai įstiklintas statinio stogas, o vertikalios atitvaros neįstiklintos. Atlikti analitiniai skaičiavimai ir šiltnamis sumodeliuotas programa DesignBuilder. Nagrinėtas energijos poreikių kitimas per metus, temperatūrų kitimas, patalpų temperatūros režimas, naudojant minėtą kompiuterinę programą. Apžvelgti gauti rezultatai, diagramos, atlikta analizė, padarytos išvados.

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Pajaujis, Vytautas, and Violeta Motuzienė. "Comparative Analysis of the Dynamic Building Energy Simulation Tools." Mokslas - Lietuvos ateitis 9, no. 4 (September 11, 2017): 442–50. http://dx.doi.org/10.3846/mla.2017.1051.

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There are a lot of methodologies and simulation tools in the world to assess the energy demand of a building. The results of simulation tools often differ, but the causes are not analysed in more detail. The article compares the results of two most widely used dynamic energy simulation tools – DesignBuilder and IES-VE, when simulation of identical building model with the same assumptions in both programs is performed. In addition, for comparison, calculations are performed with the PHPP program, as well as using STR2.09.04:2008 methodology. The tools compare the heating, cooling capacity, energy consumption of the building for heating and cooling the building during the simulation. Following differences comparing energy demands gained with two different simulation tools are defined: ventilation – up to 11%, cooling – up to 9%, heating – up to 5%.

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Cichowicz, Robert, and Artur Stelęgowski. "The PMV and PPD indices in the selected boiler room." E3S Web of Conferences 44 (2018): 00021. http://dx.doi.org/10.1051/e3sconf/20184400021.

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Thermal microclimate in a boiler room is formed by factors resulting from thermal processes that are taking place in combustion units. These factors are negatively affecting the indoor environment by worsening the air quality, and therefore it is crucial to maintain adequate air parameters in the room. It is a consequence of the fact that in the boiler room the operation of technological equipment results in an exposure of workers to adverse effects caused by thermal factors. Therefore, the evaluation of thermal conditions in the work area of people was made for the selected industrial boiler room using PMV and PPD indices (which allow to determine the thermal sensation of employees, regarding their surrounding thermal environment, based on the methodology of ISO 7730 standard). The analysis was based on own experimental measurements and numerical calculations made in the DesignBuilder program.

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Zhou, Pengfei, Chi Zhang, and Jiang Wang. "Influence of the Passive Design of a Building Facade on the Indoor Thermal Comfort of Residential Buildings." E3S Web of Conferences 237 (2021): 03006. http://dx.doi.org/10.1051/e3sconf/202123703006.

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Building facades have evident effects on indoor thermal comfort. Hence, on the basis of a multifunctional residential building in Sydney, Australia, this research uses DesignBuilder software to optimize passive system design on building facades. This research also analyses the influences of changing window glazing type, adding additional shading devices and changing the material of the exterior wall on indoor thermal comfort. Results show that the number of uncomfortable hours can be reduced by 446, 186 and 874 hours by using a double-layer Low-E glass, adding extra shading device and adopting an external wall material with low thermal conductivity, respectively. When the three aforementioned passive design strategies are combined, indoor thermal environment discomfort time can be reduced by 24%. Therefore, the indoor thermal comfort of a building can be considerably improved through effective passive designs of the building facade.

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Sovetova, Meruyert, Shazim Ali Memon, and Jong Kim. "Energy Savings of PCM-Incorporated Building in Hot Dry Climate." Key Engineering Materials 821 (September 2019): 518–24. http://dx.doi.org/10.4028/www.scientific.net/kem.821.518.

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Phase change materials is one of the innovative technologies to reduce the heating and cooling demand of buildings. In this research, the thermal performance and energy efficiency of PCM-incorporated residential house located in Sharjah and Al-Ain cities using DesignBuilder software have been evaluated. According to the simulation results, for both cities PCM 32 was found to be the most effective with energy consumption reduction around 19%. The optimum PCM decreased the maximum temperature by up to 1.09°C and was able to reduce temperature fluctuations. For constant volume, the influence of different thicknesses and surface area on energy savings was evaluated and it was found that energy savings increased with the increase in surface area and decrease in thickness of PCM layer. Finally, from correlation analysis, it was found that relationship between energy savings and meteorological factors like wind speed, temperature, relative humidity and solar radiation exist.

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Mohamed, Mennatallah Hassan Youssef, Mostafa Rifat, and Khaled Dewidar. "The Impact of Integrating Phase Change Material Upon Indoor Air Temperature in Hot Climates." WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 18 (January 13, 2022): 160–71. http://dx.doi.org/10.37394/232015.2022.18.18.

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The aim of this paper is to identify the effect of PCM as a building material of commercial building envelope on the indoor air temperature within a hot climatic context as Egypt. This paper will expose the potentials of using Phase Change Material (PCM) as an integral part of the building process to save energy, where it first introduces the current environmental challenges and identifies the impact of Thermal Energy Storage as a sustainable approach. Two different types of PCM will be tested in an experimental space in Egypt on different building model orientations and different PCM allocations, to test their effect on indoor air temperature. This will be practically examined by DesignBuilder simulation, to explore the possibilities of improving indoor thermal comfort within the studied types. Finally, conducting a set of recommendations for PCM application as a building material within the Egyptian context.

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Baharvand, Mohammad, Mohd Hamdan Bin Ahmad, Tabassom Safikhan, and Sayyed Mohammad Mahdi Mirmomtaz. "Thermal Performance of Tropical Atrium." Scientific Journal of Riga Technical University. Environmental and Climate Technologies 12, no. 1 (December 1, 2013): 34–40. http://dx.doi.org/10.2478/rtuect-2013-0014.

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Abstract Atrium is a popular architectural feature utilized widely by building designers and owners to bring various benefits such as adequate daylight, circulation spaces and surfaces for landscape applications. But atrium problems in tropical climates such as excessive daylight, glare and high temperature, which lead to increase building energy demand, have been reported. To avoid and reduce these unpleasant features, a side-lit atrium has been suggested. Although researchers proposed side-lit atrium to prevent common problems of atria, the lack of precedent research on this issue compels these authors to study atrium performance in hot and humid climate. So the research aims to examine two different atrium roof form types in terms of temperature and ventilation impacts in hot and humid climate of Malaysia using DesignBuilder as a simulation program. The results indicate lower temperature of side-lit model with better airflow pattern in comparison with top-lit model while the top-lit model provides higher air velocity at the air inlet and outlet.

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Wang, Weishu, Xuewen Ge, and Hanlin Xiong. "Thermal design optimization and analysis on heating load of rural buildings in northern China." E3S Web of Conferences 136 (2019): 03018. http://dx.doi.org/10.1051/e3sconf/201913603018.

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The envelope of rural buildings has been lack of effective and reasonable thermal insulation method and therefore its energy consumption has always been high. In order to address this problem, this paper aims to optimize the thermal design of building envelope. The simulation using DesignBuilder software for modeling and analyzing, using the orthogonal experimental design method to study the effects of external wall, external window and roof on heating load, and optimal thermal insulation scheme was obtained, which was 100mm PUF (external wall), 6mm+12mm+6mm low-E glass (external window) and 100mm PUF (roof). Results revealed that the addition of sunspace can significantly reduce the heating load and thus the selection of window thermal insulation material is very important. Compared with the condition of highest heating load, the energy-efficient rate of optimal scheme reached to 21.4%. The results of this study will serve as the idea for optimal design of rural buildings envelope.

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Herrera-Sosa, Luis Carlos, Edgar Elias Villena-Montalvo, and Karin Rosario Rodriguez-Neira. "Evaluación del desempeño térmico del sillar (ignimbrita) de Arequipa, Perú." Revista de Arquitectura 22, no. 1 (January 1, 2020): 152–63. http://dx.doi.org/10.14718/revarq.2020.2261.

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El sillar, material de construcción para muros y cubiertas de uso común en Arequipa (Perú), ha perdido vigencia debido, entre otras cosas, al desconocimiento de su desempeño térmico. Por ello, el objetivo de la presente investigación fue evaluar el desempeño térmico de este material en comparación con el adobe, el ladrillo de arcilla y la bloqueta de concreto. La metodología consistió en un monitoreo experimental de seis módulos en verano y ocho en invierno, en modelos de campo con análisis de causa-efecto por medio de simulación. Comparando la temperatura del aire exterior e interior con la de confort, se determinó qué material tiene mejor desempeño térmico en temporadas de verano e invierno. Con el software DesignBuilder V4.7, se simularon térmicamente los módulos, se correlacionaron los resultados para su validación y se obtuvieron los consumos energéticos. Los resultados de campo arrojaron que el sillar, en su colocación en soga y canto, es el de mejor desempeño térmico, mientras que la bloqueta de concreto es el más ineficiente.

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SANCHO SALAS, ANDREA, DANIEL BUITRAGO CARAZO, ANDRES CHACON REDONDO, LUIS MIGUEL CHAVES CHAVES, ANA CRISTINA LEZAMA SOLANO, REBECA PEREZ CASTAÑEDA, and LUIS QUIROS NUÑEZ. "ARCHITECTURE ADAPTATION TO CLIMATE CHANGE: DATA PROJECTION AND ENERGY SIMULATION OF TWO SCENARIOS FOR PUBLIC BUILDINGS IN COSTA RICA." DYNA 96, no. 4 (July 1, 2021): 347–50. http://dx.doi.org/10.6036/9581.

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Climate change represents the biggest challenge in a global scale. Architecture should be able to adapt to this new conditions and ensure comfort and energy efficiency. The main goal of this research is to adapt existent public buildings and reach hygrothermal comfort for two climate change scenarios in Costa Rica. To determine the study zone three areas were analyzed: ecological, demographic and regional economic. Subsequently case studies are chosen through criteria to evaluate the impact of the intervention. A scaled bioclimatic analysis is done for each case and through a comparative analysis two cases are selected to be simulated. Hourly Weather Data files are created for the year 2080 by using observed data from “Instituto Meteorológico Nacional” (IMN) and projected data from “Centro de Investigaciones Geofísicas” (CIGEFI). Lastly, two adaptation proposals are done for each case, a mild one and a complete redesign; it’s behavior is evaluated using the software DesignBuilder® and design recommendations are proposed. Keywords: bioclimatic architecture, climate change, hygrothermal comfort, adaptation, simulation.

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Nitu, Maliha Afroz, Ozgur Gocer, Niranjika Wijesooriya, Diksha Vijapur, and Christhina Candido. "A Biophilic Design Approach for Improved Energy Performance in Retrofitting Residential Projects." Sustainability 14, no. 7 (March 23, 2022): 3776. http://dx.doi.org/10.3390/su14073776.

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The existing building stock is recognised as a major contributor to total energy consumption and related carbon emissions around the globe. There is increased attention on the retrofit of existing building stock, especially residential buildings, as a way of curbing energy consumption and carbon emissions. Within this context, human nature connectedness (HNC) has the potential of further amplifying the benefits of sustainable buildings both from an energy conservation practice and tangible improvements to users’ satisfaction, health, and wellbeing. This study attempts to show a case study of the potential of using HNC through the adoption of biophilic design principles to improve a residential building performance. A terrace house located in Sydney, NSW, was used as a case study and proposed retrofit scenarios were simulated with DesignBuilder® and Rhinoceros/Grasshopper with a view of improved daylighting, thermal comfort, and energy consumption. The building performance is improved in terms of daylighting, thermal comfort, and reduced energy consumption, additionally enhancing HNC.

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Ashraf, Hadeed, Muhammad Sultan, Uzair Sajjad, Muhammad Wakil Shahzad, Muhammad Farooq, Sobhy M. Ibrahim, Muhammad Usman Khan, and Muhammad Ahmad Jamil. "Potential Investigation of Membrane Energy Recovery Ventilators for the Management of Building Air-Conditioning Loads." Energies 15, no. 6 (March 15, 2022): 2139. http://dx.doi.org/10.3390/en15062139.

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The present study provides insights into the energy-saving potential of a membrane energy recovery ventilator (ERV) for the management of building air-conditioning loads. This study explores direct (DEC), Maisotsenko cycle (MEC) evaporative cooling, and vapor compression (VAC) systems with ERV. Therefore, this study aims to explore possible air-conditioning options in terms of temperature, relative humidity, human thermal comfort, wet bulb effectiveness, energy saving potential, and CO2 emissions. Eight different combinations of the above-mentioned systems are proposed in this study i.e., DEC, MEC, VAC, MEC-VAC, and their possible combinations with and without ERVs. A building was modeled in DesignBuilder and simulated in EnergyPlus. The MEC-VAC system with ERV achieved the highest temperature gradient, wet bulb effectiveness, energy-saving potential, optimum relative humidity, and relatively lower CO2 emissions i.e., 19.7 °C, 2.2, 49%, 48%, and 499.2 kgCO2/kWh, respectively. Thus, this study concludes the hybrid MEC-VAC system with ERV the optimum system for the management of building air-conditioning loads.

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Chacón, Lorena, Miguel Chen Austin, and Carmen Castaño. "A Multiobjective Optimization Approach for Retrofitting Decision-Making towards Achieving Net-Zero Energy Districts: A Numerical Case Study in a Tropical Climate." Smart Cities 5, no. 2 (March 26, 2022): 405–32. http://dx.doi.org/10.3390/smartcities5020023.

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Buildings are among the main reasons for the deterioration of the world environment as they are responsible for a large percentage of CO2 emissions related to energy. For this reason, it is necessary to find solutions to this problem. This research project consists of constructing the metamodel of an urbanization located in Panama, Herrera province. The classification and systematization of its main elements, using the software DesignBuilder and SysML diagrams, were carried out for its subsequent implementation in an optimization analysis that seeks to approach the NZED standard. The main objectives of the optimization are reducing the energy consumption at the lowest possible price while maintaining or improving thermal comfort. In this study, it was possible to reduce electricity consumption to at least 60% of the original value and about 10% of the renewable energy generation capacity by implementing optimization techniques within the retrofit category related to the envelope of the buildings and the occupant’s behavior.

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De Vita, Mariangela, Giulia Massari, and Pierluigi De Berardinis. "Retrofit Methodology Based on Energy Simulation Modeling Applied for the Enhancement of a Historical Building in L’Aquila." Energies 13, no. 12 (June 26, 2020): 3289. http://dx.doi.org/10.3390/en13123289.

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Energy loss has not been addressed effectively by policies introduced to encourage the preservation and enhancement of historical structures. Material and other constraints, together with safety standard improvements, do not always guarantee adequate levels of environmental performance. An optimization of retrofit measures to align with new uses, new standards of comfort, and energy saving are needed, as are studies based on new best practices for the enhancement of architectural heritage. This paper presents a method that uses dynamic models tared on non-destructive surveys, and based on compatible energy and structural interventions derived from preliminary analyses integrated into special design tools. Energy simulations were carried out using Design Builder (6.1.5.002, Designbuilder Software Ltd, Stroud, UK) software. The case study is a former hospital, S. Salvatore, in L’Aquila, an architecturally important building, severely damaged by an earthquake in 2009. The methodology presented in this research includes in-depth investigations coherently systematized into a multi-scenario output using simulation software. The results guarantee a high level of compatibility with restoration and seismic guidelines, and new building environmental performance requirements.

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Schmerse, Erik, Charles A. Ikutegbe, Amar Auckaili, and Mohammed M. Farid. "Using PCM in Two Proposed Residential Buildings in Christchurch, New Zealand." Energies 13, no. 22 (November 18, 2020): 6025. http://dx.doi.org/10.3390/en13226025.

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A characteristic feature of lightweight constructions is their low thermal mass which causes high internal temperature fluctuations that require high heating and cooling demand throughout the year. Phase change materials (PCMs) are effective in providing thermal inertia to low-thermal-mass buildings. This paper aims to analyse the thermal behaviour of two proposed lightweight buildings designed for homeless people and to investigate the potential benefit achievable through the use of different types of PCM in the temperate climatic conditions of Christchurch, New Zealand. For this purpose, over 300 numerical simulations were conducted using DesignBuilder® simulation software. The bulk of the simulations were carried out under the assumption that the whole opaque building envelope is equipped with PCM. The results showed significant energy saving and comfort enhancement through the application of PCMs. The integration of PCM in single-structure components led to substantial energy savings between 19% and 27% annually. However, occupant behaviour in terms of ventilation habits, occupancy of zones, etc. remains one of the biggest challenges in any simulation work due to insufficient data.

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Suárez, Rafael, Rocío Escandón, Ramón López-Pérez, Ángel Luis León-Rodríguez, Tillmann Klein, and Sacha Silvester. "Impact of Climate Change: Environmental Assessment of Passive Solutions in a Single-Family Home in Southern Spain." Sustainability 10, no. 8 (August 16, 2018): 2914. http://dx.doi.org/10.3390/su10082914.

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According to the IPCC Climate Change projections by 2050 temperatures in southern Spain will have increased noticeably during the summer. Housing—in its current form—will not be able to provide a suitable response to this new climate scenario, and will in turn prompt an increase in cooling energy consumption and a series of problems relating to health and comfort. The DesignBuilder simulation tool was used to quantify the impact of this future climate scenario on energy demand, as well as its effect under free-running conditions on indoor temperature. Different passive conditioning strategies were evaluated to establish their influence on the indoor comfort conditions. The case study examined a theoretical single-family residential unit model in order to establish guidelines for the pre-selection of the most suitable passive solutions. The results show that passive conditioning strategies analysed (envelope treatment, solar gain protection and night-time natural ventilation) reduce energy demand and indoor temperatures, thus increasing energy efficiency and improving indoor comfort conditions. Therefore, these passive conditioning strategies reduce the cooling energy consumption.

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Xu, Xiaodong, Fenlan Luo, Wei Wang, Tianzhen Hong, and Xiuzhang Fu. "Performance-Based Evaluation of Courtyard Design in China’s Cold-Winter Hot-Summer Climate Regions." Sustainability 10, no. 11 (October 30, 2018): 3950. http://dx.doi.org/10.3390/su10113950.

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A courtyard is a traditional and popular construction feature found in China’s urban buildings. This case study evaluates the performance of the traditional courtyard design of the Jiangnan Museum, located in Jiangsu Province. In the evaluation, the spatial layout of courtyards is adjusted, the aspect ratio is changed, and an ecological buffer space is created. To model and evaluate the performance of the courtyard design, this study applied the Computational fluid dynamics (CFD) software, Parabolic Hyperbolic Or Elliptic Numerical Integration Code Series (PHOENICS), for wind environment simulation, and the EnergyPlus-based software, DesignBuilder, for energy simulation. Results show that a good combination of courtyard layout and aspect ratio can improve the use of natural ventilation by increasing free cooling during hot summers and reducing cold wind in winters. The results also show that ecological buffer areas of a courtyard can reduce cooling loads in summer by approximately 19.6% and heating loads in winter by approximately 22.3%. The study provides insights into the optimal design of a courtyard to maximize its benefit in regulating the microclimate during both winter and summer.

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Cichowicz, Robert, and Artur Stelęgowski. "The distribution of air temperature and velocity in the selected boiler room." E3S Web of Conferences 44 (2018): 00020. http://dx.doi.org/10.1051/e3sconf/20184400020.

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The crucial impact on the indoor air quality in technological rooms, including boiler plant buildings, is made by operation of technological devices and ventilation systems. Therefore, the distribution of air temperature and velocity in these rooms mainly depends on location and heat gains generated by combustion devices, as well as emplacement of air supply and air exhaust elements. The temperature and airflow volume of supplied air is also an issue, because the indoor environment parameters are formed by the flow of air in the working area. Determination of the impact of physical factors on the thermal environment in a room is possible using an analysis of the air temperature and velocity. This issue is vital in terms of necessity to maintain the adequate heat conditions in the working area. Therefore, basing on the experimental measurements and numerical calculations (made in DesignBuilder software), the distribution of air temperature and velocity was analyzed in the selected industrial boiler room, located in the Lodz city, in Poland. The results obtained were compared with the recommended and limit values in the industrial buildings.

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Shao, Teng, Hong Jin, Wuxing Zheng, and Jin Wang. "The Influence of Window-Wall Ratio on Heating Energy Consumption of Rural House in Severe Cold Regions of China." E3S Web of Conferences 173 (2020): 03008. http://dx.doi.org/10.1051/e3sconf/202017303008.

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Rural houses in severe cold areas of China are mostly single-storey independent buildings with large shape coefficient. Compared with urban residential, it has larger contact area between envelope and outdoor environment of each household. Meanwhile, the heat transfer coefficient of window is usually greater than that of external wall and roof. The window-wall ratio is one of the important indicators affecting the energy consumption of rural house. This paper takes window-wall ratio as the main variable, building orientation, thermal performance of envelope and window heat transfer coefficient as the auxiliary variables, and applies DesignBuilder software to quantitatively analyse the mechanism of window-wall ratio on rural house’s heating energy consumption under the interactive influence of multiple factors. Results show that the influence rule of window-wall ratio with different orientations on heating energy consumption will change when the thermal performance of envelope or window heat transfer coefficient changed. The synthetic effect of various factors should be considered in the design to reasonably determine the windowwall ratio of rural house.

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Machado, Jéssica de Mello, Bruna Perovano Sirtuli, Edna Aparecida Nico Rodrigues, and Cristina Engel De Alvarez. "Sustentabilidade e Desempenho Térmico em Habitação de Interesse Social." Paranoá: cadernos de arquitetura e urbanismo, no. 27 (May 8, 2020): 95–112. http://dx.doi.org/10.18830/issn.1679-0944.n27.2020.06.

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Com o número crescente de investimentos em edificações de interesse social, cresce também a preocupação com o conforto térmico dos usuários, uma vez que estes imóveis estão sendo replicados em diferentes regiões do país, sem a devida preocupação com a diversidade climática e com a utilização de materiais mais adequados, especialmente quando se deseja utilizar sistemas passivos para a criação de ambientes termicamente mais confortáveis. Assim, objetivou-se comparar o nível de sustentabilidade e de desempenho térmico dos materiais comumente utilizados nas vedações verticais de habitações de interesse social multifamiliares, ventiladas naturalmente em Vitória-ES. Para esta finalidade, foram realizadas simulações computacionais com o software DesignBuilder versão 3.4.0.041, adotando-se para a análise de sustentabilidade dos materiais o ISMAS, que consiste em uma ferramenta de suporte para a seleção de materiais construtivos, pautada no conceito de sustentabilidade. Os resultados apontaram que nem sempre a utilização de materiais com classificação mais alta de sustentabilidade apresentam melhores resultados quanto ao desempenho térmico, sendo necessário analisar outros parâmetros para a melhor decisão projetual.

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Aeinehvand, Roya, Amiraslan Darvish, Abdollah Baghaei Daemei, Shima Barati, Asma Jamali, and Vahid Malekpour Ravasjan. "Proposing Alternative Solutions to Enhance Natural Ventilation Rates in Residential Buildings in the Cfa Climate Zone of Rasht." Sustainability 13, no. 2 (January 12, 2021): 679. http://dx.doi.org/10.3390/su13020679.

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Today, renewable resources and the crucial role of passive strategies in energy efficiency in the building sector toward the sustainable development goals are more indispensable than ever. Natural ventilation has traditionally been considered as one of the most fundamental techniques to decrease energy usage by building dwellers and designers. The main purpose of the present study is to enhance the natural ventilation rates in an existing six-story residential building situated in the humid climate of Rasht during the summertime. On this basis, two types of ventilation systems, the Double-Skin Facade Twin Face System (DSF-TFS) and Single-Sided Wind Tower (SSWT), were simulated through DesignBuilder version 4.5. Then, two types of additional ventilation systems were proposed in order to accelerate the airflow, including four-sided as well as multi-opening wind towers. The wind foldable directions were at about 45 degrees (northwest to southeast). The simulation results show that SSWT could have a better performance than the aforementioned systems by about 38%. Therefore, the multi-opening system was able to enhance the ventilation rate by approximately 10% during the summertime.

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Vargas, Ana Paola, and Leon Hamui. "Thermal Energy Performance Simulation of a Residential Building Retrofitted with Passive Design Strategies: A Case Study in Mexico." Sustainability 13, no. 14 (July 19, 2021): 8064. http://dx.doi.org/10.3390/su13148064.

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High energy consumption as a result of an inefficient design has both economic and environmental repercussions throughout the life cycle of a building. In Mexico, the residential sector is the third-largest final energy consumer, therefore improving the performance of existing buildings is considered an effective method in achieving energy savings. Moreover, in Mexico warm climate regions predominate, which impacts energy consumption. This article examines a linked, single-family house located in the hot-humid climate city of Villahermosa, Tabasco (México). DesignBuilder software was used to conduct the thermal energy performance simulation of the existing building (base case) and to evaluate the energy-saving potentials by implementing different passive design strategies. As a result, the annual electricity consumption of the base case decreased a maximum of 2.0% with the passive design strategy in exterior windows, 4.9% in walls and, 13.7% reduction in roofs, the latter being the enclosure with the greatest reduction achieved. Nevertheless, a final adaptation proposal with the passive design strategies, whose results represented the highest energy savings, accomplished a total reduction of 23.5% with a payback period of 5.8 years.

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Rached, Ehab, and Maha Anber. "Energy retrofitting strategies for office buildings in hot arid climate." International Journal of Low-Carbon Technologies 17 (2022): 506–12. http://dx.doi.org/10.1093/ijlct/ctac031.

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Abstract The building sector consumes ~30% of the primary energy consumption. Energy retrofitting of buildings contributes greatly to reducing energy consumption and carbon emissions. This research aims at revealing the potential energy savings resulting from applying energy retrofitting strategies to office buildings in hot arid climate. The study is applied on Cairo, Egypt, representing the hot arid climate. The case study building was selected to be an existing office building with an area of 12 000 m2. The energy simulation software used is the DesignBuilder software. The suggested retrofitting strategies are upgrading the lighting systems to use LED lights, upgrading the air conditioning performance, using external shading devices, improving AC efficiency, improving the building’s air tightness and improving the R-value of the building envelope by using insulation for exterior walls and roof and substituting the existing window glazing. Those strategies were applied to the building for evaluating their potential for achieving energy savings. The conclusion of the applied study was that by combining the most effective strategies has resulted in annual energy consumption reduction by 86%.

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Haruna, I. U., I. A. Rufai, and D. B. Yahaya. "Numerical and Experimental Investigation of the Thermal Comfort of an Office Building Equipped with Hybrid Downdraft Evaporative Cooler." Journal of Applied Sciences and Environmental Management 25, no. 8 (November 29, 2021): 1379–84. http://dx.doi.org/10.4314/jasem.v25i8.14.

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In office buildings, provision of thermal comfort for occupant’s high intellectual concentration, efficiency and productivity is imperative. This study experimentally and numerically investigates the thermal comfort performance of HDEC system equipped to an office building. The experiment was carried out in September, October and November for 24 working days and the thermal comfort Predicted Mean Vote (PMV) index being the objective function was determined using Centre for Built Environment thermal comfort tool. DesignBuilder CFD simulation software was employed to numerically determine the PMV index of the test office using ASHRAE Standard-55 thermal comfort range of PMV=±0.5. Minitab 19 software was used to validate the numerical results against the experimental results. The Pearson correlation coefficient and the P-value at 95% confidence level were 0.717 and 0.00 respectively while the RMSE computed was 0.653 indicating a good agreement between the numerical and the experimental results. Both PMV results indicate that the HDEC system is suitable for the provision of thermal comfort in office buildings and any other similar building.

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Nico-Rodrigues, Edna Aparecida, Cristina Engel de Alvarez, Amábeli Dell Santo, and Maria Beatriz Piderit. "Quando a janela define a condição de desempenho térmico em ambientes ventilados naturalmente: caso específico das edificações multifamiliares em Vitória, ES." Ambiente Construído 15, no. 2 (June 2015): 7–23. http://dx.doi.org/10.1590/s1678-86212015000200011.

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A adoção de diretrizes para o condicionamento térmico passivo auxilia na minimização do consumo de energia de uma edificação, principalmente quando associada a componentes construtivos com características térmicas adequadas às estratégias previstas. Entre tais estratégias, para climas tropicais úmidos, a ventilação assume fundamental importância. Este trabalho tem por objetivo avaliar a influência da janela no desempenho térmico em edificações residenciais multifamiliares na cidade de Vitória, ES, considerando dois modelos de janelas com ênfase na ventilação natural. Foram estabelecidas três etapas: caracterização dos modelos usuais nas edificações multifamiliares; definição do método para análise do desempenho térmico em ambientes ventilados naturalmente com o modelo usual, considerando a frequência de desconforto térmico e os graus-hora de desconforto térmico para a estação do verão; e simulações com o software DesignBuilder. Para o diagnóstico final foi adotada a flutuabilidade entre a frequência de desconforto térmico e o grau-hora de desconforto térmico caracterizando o desempenho térmico do ambiente para o favorecimento do conforto térmico. A avaliação demonstrou que a janela usual em Vitória é ineficiente para a obtenção de conforto térmico considerando a ventilação natural como condicionamento térmico passivo.

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Journal articles on the topic 'DesignBuilder'

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