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Journal articles on the topic 'Hygrothermal and energy performance'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Blumberga, Andra, Ritvars Freimanis, Edite Biseniece, and Agris Kamenders. "Hygrothermal Performance Evaluation of Internally Insulated Historic Stone Building in a Cold Climate." Energies 16, no. 2 (2023): 866. http://dx.doi.org/10.3390/en16020866.

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In most cases, internal insulation is the only solution to improve the energy efficiency of historic buildings. However, it is one of the most challenging and complex energy efficiency measures due to changes in boundary conditions and hygrothermal behavior of the wall, particularly in cold climates. This study presents the long-term monitoring of the hygrothermal performance of an internally insulated historic stone wall building. The study aimed to assess the hygrothermal behavior of the dolomite wall if mineral wool insulation is applied internally on the north-east wall in the rooms with a

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Lawrence, Mike, Enrico Fodde, Kevin Paine, and Pete Walker. "Hygrothermal Performance of an Experimental Hemp-Lime Building." Key Engineering Materials 517 (June 2012): 413–21. http://dx.doi.org/10.4028/www.scientific.net/kem.517.413.

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The use of hemp-lime as a construction technique is a novel approach which combines renewable low carbon materials with exceptional hygrothermal performance. The hemp plant can grow up to 4m over a four month period, with a low fertilizer and irrigation demand, making it very efficient in the use of time and material resources. All parts of the plant can be used the seed for food stuffs, the fibre surrounding the stem for paper, clothing and resin reinforcement, and the woody core of the stem as animal bedding and aggregate in hemp-lime construction. The unique pore structure of the woody core

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Olaoye, Toba Samuel, Mark Dewsbury, and Hartwig Kunzel. "A Method for Establishing a Hygrothermally Controlled Test Room for Measuring the Water Vapor Resistivity Characteristics of Construction Materials." Energies 14, no. 1 (2020): 4. http://dx.doi.org/10.3390/en14010004.

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Hygrothermal assessment is essential to the production of healthy and energy efficient buildings. This has given rise to the demand for the development of a hygrothermal laboratory, as input data to hygrothermal modeling tools can only be sourced and validated through appropriate empirical measurements in a laboratory. These data are then used to quantify a building’s dynamic characteristic moisture transport vis-a-vis a much more comprehensive energy performance analysis through simulation. This paper discusses the methods used to establish Australia’s first hygrothermal laboratory for testin

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Pungercar, Vesna, and Florian Musso. "Hygrothermal Performance of Salt (NaCl) for Internal Surface Applications in the Building Envelope." Materials 15, no. 9 (2022): 3266. http://dx.doi.org/10.3390/ma15093266.

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Salt (NaCl), as a by-product from the potash and desalination industry, can be the solution to the scarcity of building materials and might replace more energy-consuming materials. However, salt carries the risk of deliquescence in humid environments. This study conducted fundamental research on the hygrothermal performance of salt for internal surface applications in the building envelope in six different climate conditions. In addition, salt’s performance was also compared with that of gypsum in similar applications. The simulation models (using WUFI®Pro, WUFI®Plus) and in situ measurements

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Heracleous, C., R. Panagiotou, I. Ioannou, A. Michael, and M. Philokyprou. "Hygrothermal Performance of Adobe Structures." IOP Conference Series: Earth and Environmental Science 1196, no. 1 (2023): 012059. http://dx.doi.org/10.1088/1755-1315/1196/1/012059.

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Abstract Vernacular architecture incorporates many cooling and heating passive design strategies related to the structural envelope, the different architectural arrangements and the way of living of the inhabitants. Adobe walls are considered to be high thermal mass masonries, as they have the ability to store thermal energy. The high thermal inertia of these materials regulates indoor temperature variations through considerable time lags, thus contributing to the improvement of thermal comfort conditions. This study deals with the environmental behaviour of an adobe historic building in the r

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Ganguly, Shashwat, Fan Wang, and Michael Browne. "Comparative methods to assess renovation impact on indoor hygrothermal quality in a historical art gallery." Indoor and Built Environment 28, no. 4 (2018): 492–505. http://dx.doi.org/10.1177/1420326x18785791.

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This paper presents a set of methods for renovation impact assessment of indoor hygrothermal conditions in a culturally significant historical building, functioning as an art gallery. A new parameter, Renovation Impact Index (RII), was developed and used for the assessment. The RII is defined as the performance gradient of indoor hygrothermal conditions over two annual periods, the year before and the year after the renovations. The performances of the two most critical parameters to artwork conservation – temperature (T) and relative humidity (RH) – were assessed with respect to conservation

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Nagy, Balázs, and Tamás K. Simon. "Energy and hygrothermal performance of builtin mineral wool thermal insulations." MATEC Web of Conferences 163 (2018): 08001. http://dx.doi.org/10.1051/matecconf/201816308001.

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The paper analyses the monitoring measurement results on energy performance and hygrothermal behaviour of built-in rock and glass mineral wool thermal insulations in an energy efficiently refurbished typical single-family dwelling house in Hungary. The experimental monitoring measurements included an external weather station; internal air condition measurements; temperature, relative humidity and heat flux sensors in the layers of the facade and attic. An energy meter was installed into the heating systems. Apart from the insulated one, the energy consumption of an uninsulated but identical fa

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Pedroso, Marco, Maria da Glória Gomes, José Dinis Silvestre, Ahmed Hawreen, and Inês Flores-Colen. "Thermophysical Parameters and Hygrothermal Simulation of Aerogel-Based Fibre-Enhanced Thermal Insulating Renders Applied on Exterior Walls." Energies 16, no. 7 (2023): 3048. http://dx.doi.org/10.3390/en16073048.

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Aerogel-based renders have been the subject of research in the last few years due to their high thermal insulation characteristics and the need for buildings to become more energy-efficient. This study compares the hygrothermal behaviour of an aerogel-based render (reference) with the same base formulation, replacing the powder with three different fibres (aramid 0.5%, sisal 0.1%, and biomass 0.1%, by total volume) that can be used in buildings’ envelopes. The experimental programme allowed us to characterise and compare the thermophysical properties of the different formulations and then simu

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Perez-Bezos, Silvia, Anna Figueroa-Lopez, Matxalen Etxebarria-Mallea, Xabat Oregi, and Rufino Javier Hernandez-Minguillon. "Assessment of Social Housing Energy and Thermal Performance in Relation to Occupants’ Behaviour and COVID-19 Influence—A Case Study in the Basque Country, Spain." Sustainability 14, no. 9 (2022): 5594. http://dx.doi.org/10.3390/su14095594.

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Evidence shows that people have a major impact on building performance. Occupants’ impact is especially important in social housing, where their occupants may present greater vulnerabilities, and their needs are not always considered. This study aims to analyse the socio-demographic influence in social rental housing concerning hygrothermal comfort and energy consumption in a case study located in Vitoria, Spain during the first 4-month period of 2020 and 2021 (during and after COVID-19 lockdown). An innovative data management system is included, where the users and administration can see in r

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Yu, Shui, and Xu Zhang. "The Research on Hygrothermal Characterization of Eco-Fiber Materials." Advanced Materials Research 450-451 (January 2012): 786–90. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.786.

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The development and research of new thermal insulation materials become a hot point due to the demand of building energy efficiency and high hygrothermal environment. Although there are many kinds of insulation materials in Chinese market, most of them are made from oil. It is very important to develop new thermal insulation materials to decrease the emission of CO2 and the use of non-renewable energy. The new materials have the function of reducing carbon emissions, improving the insulation performance of building envelope and indoor hygrothermal environment. However the research on hygrother

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Salonvaara, Mikael, Philip Boudreaux, Andre Desjarlais, Florian Antretter, and Eric Werling. "Validation of Hygrothermal Simulations with Wall Performance Experiments in an Environmental Chamber." E3S Web of Conferences 172 (2020): 04010. http://dx.doi.org/10.1051/e3sconf/202017204010.

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Oak Ridge National Laboratory is developing a web tool, built on a rule-based expert system, that aids stakeholders in designing energy-efficient moisture-durable walls. Currently, the tool’s expert system database is mostly populated with expert opinion, but work is being done to incorporate durability assessment based on stochastic hygrothermal modeling. Chamber experiments have been conducted to validate the hygrothermal models. The measured temperature and humidity have been compared with those predicted by the hygrothermal model. Experiments and comparison to one-dimensional hygrothermal

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Bogdanovs, Mihails, Andra Blumberga, and Ritvars Freimanis. "The Safe Insulation from the Inside as a Solution to the Energy and Climate Crisis." Environmental and Climate Technologies 28, no. 1 (2024): 500–509. http://dx.doi.org/10.2478/rtuect-2024-0039.

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Abstract During the time when the European Union is facing an energy crisis, it is essential to understand ways to overcome it more easily. As one of the consuming sectors, buildings play a crucial role in improving energy efficiency. Therefore, one of the ways to fight with energy crisis and high energy consumption in buildings is insulation from the inside. This study assesses the hygrothermal performance of masonry walls with 9 interior insulation systems (mineral wool with vapor barrier, XPS, PIR, cork, expanded cork, aerogel blanket, wood fibre plates, perlite board) exposed to different

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Muñoz-González, Carmen, Ángel León-Rodríguez, Rafael Suárez Medina, and Catherine Teeling. "Hygrothermal Performance of Worship Spaces: Preservation, Comfort, and Energy Consumption." Sustainability 10, no. 11 (2018): 3838. http://dx.doi.org/10.3390/su10113838.

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The energy problem, one the most important on a global scale, greatly affects the environment. Much of the current energy consumption occurs in existing buildings, including heritage buildings with varying protected status. Energy intervention and heritage conservation conflict to some extent, as research focuses more on the search for improved energy efficiency solutions for materials and systems than on their application to heritage buildings. This study describes experimental research on environmental conditioning techniques in spaces of worship in a temperate climate in southern Spain. Bui

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Ramos, N. M. M., I. M. Ribeiro, P. Santos, João M. P. Q. Delgado, and V. P. de Freitas. "Optimisation of Envelope Insulation for the Retrofit of an Educational Building." Defect and Diffusion Forum 312-315 (April 2011): 1137–42. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.1137.

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This paper presents ongoing work for the definition of an optimal design strategy for retrofitting educational buildings. The term “optimal design” refers to the selection of different retrofitting solutions to ensure an energy efficient building that can be developed which will not compromise hygrothermal comfort, indoor air quality, health and durability. In this paper, a selection model of thermal insulation thickness of envelope elements is developed, aiming the control of surface condensation and upgrade of hygrothermal comfort. The mathematical formulation of this model leads to a nonlin

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Salonvaara, Mikael, Andre Desjarlais, Antonio J. Aldykiewicz, et al. "Application of Machine Learning to Assist a Moisture Durability Tool." Energies 16, no. 4 (2023): 2033. http://dx.doi.org/10.3390/en16042033.

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The design of moisture-durable building enclosures is complicated by the number of materials, exposure conditions, and performance requirements. Hygrothermal simulations are used to assess moisture durability, but these require in-depth knowledge to be properly implemented. Machine learning (ML) offers the opportunity to simplify the design process by eliminating the need to carry out hygrothermal simulations. ML was used to assess the moisture durability of a building enclosure design and simplify the design process. This work used ML to predict the mold index and maximum moisture content of

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Paiho, Ojanen, Seppä, and Paavola. "Critical Performance Aspects of Retrofitting Apartment Buildings Using a Multifunctional Façade System." Buildings 9, no. 8 (2019): 184. http://dx.doi.org/10.3390/buildings9080184.

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There is huge market potential for energy refurbishment solutions in European buildings. This paper analyzes the challenges related to using a multifunctional energy efficient façade system, the “Meefs” system, in retrofitting multi-family apartment buildings. Similar challenges often occur also in other comparable façade renovation solutions. The focus is on hygrothermal performance even as other aspects are also discussed. After introducing the hygrothermal performance challenges of the Meefs system, numerical case analyses are performed in three different climatic conditions. The results fo

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Ma, Xinyue, and Junyou Shi. "Effectiveness of Surface Treatment on Bonding Performance of Starch-Based Aqueous Polymer Isocyanate Wood Adhesive." Polymers 15, no. 4 (2023): 988. http://dx.doi.org/10.3390/polym15040988.

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The surface of a bonding material plays a key role in the bonding performance of an adhesive. Herein, we evaluated the effect of substrate surface treatment methods (sandpaper polished, chemical oxidation, and coupling agent) on the adhesive properties of starch-based aqueous polymer isocyanate (API) wood adhesive during hygrothermal aging. The birch substrate was processed with three different surface treatments, and the change of surface was analyzed by X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared spectroscopy (FT-IR), and Energy Dispersive Spectroscopy (EDS) methods. T

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Yu, Shui, Mark Bomberg, and Xu Zhang. "Integrated methodology for evaluation of energy performance of the building enclosures: Part 4 – material characterization for input to hygrothermal models." Journal of Building Physics 35, no. 3 (2011): 194–212. http://dx.doi.org/10.1177/1744259111420071.

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Reviewing hygrothermal input data published in handbooks such as ASHRAE or ASTM, one often finds large range of variability in hygric properties of construction materials. Two factors that cause variability of these results are uncertainty of the test method and inadequate characterization of the material sample. Adequate characterization of the tested sample, despite being one of the most critical aspects of any material property measurement, is however frequently neglected. Yet, performing a high-precision test when the sample is not adequately characterized does not tell us what material wa

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Abdellatef, Yaser, Mohammad Amil Khan, Asif Khan, Mehdi Iftekharul Alam, and Miroslava Kavgic. "Mechanical, Thermal, and Moisture Buffering Properties of Novel Insulating Hemp-Lime Composite Building Materials." Materials 13, no. 21 (2020): 5000. http://dx.doi.org/10.3390/ma13215000.

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Hempcrete is a sustainable biocomposite that can reduce buildings’ embodied energy while improving energy performance and indoor environmental quality. This research aims to develop novel insulating hemp-lime composites using innovative binder mixes made of recycled and low-embodied energy pozzolans. The characterization of composites’ mechanical and hygrothermal properties includes measuring compressive strength, splitting tensile strength, thermal conductivity, specific heat capacity, and moisture buffer capacities. This study also investigates the impact of sample densities and water conten

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Salonvaara, Mikael, Seungjae Lee, Emishaw Iffa, et al. "Selecting durable building envelope systems with machine learning assisted hygrothermal simulations database." Journal of Physics: Conference Series 2069, no. 1 (2021): 012230. http://dx.doi.org/10.1088/1742-6596/2069/1/012230.

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Abstract Hygrothermal simulations provide insight into the energy performance and moisture durability of building envelope components under dynamic conditions. The inputs required for hygrothermal simulations are extensive, and carrying out simulations and analyses requires expert knowledge. An expert system, the Building Science Advisor (BSA), has been developed to predict the performance and select the energy-efficient and durable building envelope systems for different climates. The BSA consists of decision rules based on expert opinions and thousands of parametric simulation results for se

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Kaboré, Aguerata, Wahid Maref, and Claudiane M. Ouellet-Plamondon. "Hygrothermal Performance of the Hemp Concrete Building Envelope." Energies 17, no. 7 (2024): 1740. http://dx.doi.org/10.3390/en17071740.

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The search for environmentally friendly and low-carbon-footprint construction materials continues progressively. Researchers are now interested in innovative materials that connect with the principles of sustainable construction, and materials such as hemp concrete prove to be promising. This article presents the results of a study that aimed to evaluate the hygrothermal performance of hemp concrete integrated into the building envelope using the hygrothermal tool WUFI Pro 6.2. The simulation model was compared and verified with existing models before its utilization for this study. The result

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Koh, Chuen Hon (Alex), and Dimitrios Kraniotis. "Hygrothermal performance, energy use and embodied emissions in straw bale buildings." Energy and Buildings 245 (August 2021): 111091. http://dx.doi.org/10.1016/j.enbuild.2021.111091.

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Gholami, Mansoureh, Alberto Barbaresi, Patrizia Tassinari, Marco Bovo, and Daniele Torreggiani. "A Comparison of Energy and Thermal Performance of Rooftop Greenhouses and Green Roofs in Mediterranean Climate: A Hygrothermal Assessment in WUFI." Energies 13, no. 8 (2020): 2030. http://dx.doi.org/10.3390/en13082030.

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In urban areas, a considerable proportion of energy demand is allocated to buildings. Since rooftops constitute one-fourth of all urban surfaces, an increasing amount of attention is paid to achieving the most efficient shapes and component designs compatible with every climate and urban context, for rooftops of varying sizes. In this study, three types of rooftop technologies, namely insulated, green roof, and rooftop greenhouse, are evaluated for energy and thermal performance using computer simulations. Water surface exposure, absorption, and intrusion are the three important factors in the

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Bagarić, M., I. Banjad Pečur, and B. Milovanović. "Application of developed facade panel from recycled CDW: A case study." Journal of Physics: Conference Series 2069, no. 1 (2021): 012187. http://dx.doi.org/10.1088/1742-6596/2069/1/012187.

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Abstract Using waste materials for production of sustainable exterior façade panel, that can be recycled at the end of its life cycle as part of a circular economy model, can significantly reduce environmental footprint of buildings and help preserve natural resources. The envelope system under consideration is a ventilated prefabricated wall panel from recycled construction and demolition waste (CDW). In this paper, hygrothermal simulations together with field monitoring of hygrothermal performance, energy consumption, indoor comfort and air quality in real environment conditions have been pr

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Pihelo, P., and T. Kalamees. "Hygrothermal Performance of Prefabricated Insulation Elements for Serial Renovation of Apartment Buildings in a Moderately Continental German Climate." Journal of Physics: Conference Series 2654, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1742-6596/2654/1/012001.

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Abstract The reduction of energy use in the buildings is expected to be reached by fulfilling several requirements of the low- and nearly-zero energy buildings (nZEB) policy. The improvement of the energy performance of the building envelope and the service systems of the existing buildings offers great potential for energy savings as the annual replacement of the existing stock is only 1 to 2%. The efficient way to accomplish the purpose and global goals of the nZEB is to apply the integrated design process, development, and application of prefabricated insulation elements on a large scale. I

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Bakkour, Amer, Salah-Eddine Ouldboukhitine, Pascal Biwole, Gael Godi, and Sofiane Amziane. "Experimental and Numerical Investigation of Hygrothermal Transfer through Bio-Based Materials: An Application to Wood–Cement Walls." Buildings 13, no. 12 (2023): 2986. http://dx.doi.org/10.3390/buildings13122986.

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In the context of the energy transition, new construction materials are emerging, notably bio-based materials such as wood concrete. This paper investigates the hygrothermal performance of walls constructed with wood–cement concrete. First, the thermal properties of wooden concrete, namely thermal conductivity, effusivity, and diffusivity, are experimentally characterized in both dry and wet conditions. Second, in situ measurements are carried out on a house in Lyon, a city in France, constructed with mono-layered wood–cement walls. This involves monitoring the temperature and relative humidit

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Verichev, Konstantin, Carmen Díaz-López, Andrés García-Ruíz, and Francisca Valdenegro. "Window Frame Design Optimization Analysis Based on Hygrothermal Performance and the Level(s) Framework." Buildings 15, no. 12 (2025): 2126. https://doi.org/10.3390/buildings15122126.

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This study investigates the hygrothermal performance of window frames to assess their capacity to prevent surface condensation—a critical factor for indoor air quality and building durability, particularly in humid climates. Driven by the practical need to replace existing aluminum frames with more sustainable alternatives, the research evaluates standard aluminum frames against modified timber frames designed to replicate the aluminum geometry. Using daily temperature and humidity data from Valdivia, Chile (2023)—a city with a temperate oceanic and humid climate—interior surface temperatures

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Liuzzi, Stefania, Simona Rigante, Francesco Ruggiero, and Pietro Stefanizzi. "Straw Based Materials for Building Retrofitting and Energy Efficiency." Key Engineering Materials 678 (February 2016): 50–63. http://dx.doi.org/10.4028/www.scientific.net/kem.678.50.

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This work aimed to measure the hygrothermal properties of some different straw-based mix that could be used as building materials (panels or bricks). Straw is used to improve the hygrothermal performances of the final products. Several mix were produced adding different percentages of straw. Two types of fibers were used: wheat straw and bean straw. The results indicated that increasing the percentages of straw greater effects on the change of thermal properties can be appreciated. Furthermore the results also reveal that the specimen produced by water glass and straw, without binder, has the

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Cacabelos-Reyes, Antón, José Luis López-González, Arturo González-Gil, Lara Febrero-Garrido, Pablo Eguía-Oller, and Enrique Granada-Álvarez. "Assessing the Energy Demand Reduction in a Surgical Suite by Optimizing the HVAC Operation During Off-Use Periods." Applied Sciences 10, no. 7 (2020): 2233. http://dx.doi.org/10.3390/app10072233.

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Hospital surgical suites are high consumers of energy due to the strict indoor air quality (IAQ) conditions. However, by varying the ventilation strategies, the potential for energy savings is great, particularly during periods without activity. In addition, there is no international consensus on the ventilation and hygrothermal requirements for surgical areas. In this work, a dynamic energy model of a surgical suite of a Spanish hospital is developed. This energy model is calibrated and validated with experimental data collected during real operation. The model is used to simulate the yearly

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Valluzzi, Maria Rosa, Elisa Saler, Alberto Vignato, et al. "Nested Buildings: An Innovative Strategy for the Integrated Seismic and Energy Retrofit of Existing Masonry Buildings with CLT Panels." Sustainability 13, no. 3 (2021): 1188. http://dx.doi.org/10.3390/su13031188.

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The Italian building heritage is aged and inadequate to the high-performance levels required nowadays in terms of energy efficiency and seismic response. Innovative techniques are generating a strong interest, especially in terms of multi-level approaches and solution optimizations. Among these, Nested Buildings, an integrated intervention approach which preserves the external existing structure and provides a new structural system inside, aim at improving both energy and structural performances. The research presented hereinafter focuses on the strengthening of unreinforced masonry (URM) buil

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Freimanis, Ritvars, Ruta Vanaga, Viesturs Balodis, Zigmars Zundans, and Andra Blumberga. "Hygrothermal Assessment of Insulation Systems for Internal Insulation of Solid Masonry Walls under Various Conditions." Buildings 13, no. 10 (2023): 2511. http://dx.doi.org/10.3390/buildings13102511.

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Energy efficiency renovation of building stock is an essential aspect of the climate change mitigation strategies in many countries. A large proportion of building stock is historical buildings. For this building stock, developing technology for safe internal insulation of external walls is crucial, preventing possible moisture damage to the building structures. Internal insulation is a risky technique as it has a high impact on the hygrothermal behavior of the wall. This study assesses the hygrothermal performance of massive masonry walls with 17 interior insulation systems exposed to differe

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Talvik, Martin, Simo Ilomets, Paul Klõšeiko, Targo Kalamees, Mattias Põldaru, and Dariusz Heim. "Hygrothermal Performance of Thick PCM Mortar behind PV Panels in Energy-Activated ETICS Facades." Buildings 13, no. 6 (2023): 1572. http://dx.doi.org/10.3390/buildings13061572.

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The concept of integrating PV panels into traditional ETICS facades has been developing for several years. Problems concerning the options for passively controlling the temperatures of PV panels with PCM and directing excess moisture out of the wall via diffusion channels have been previously studied theoretically. During this study, real wall-scale experiments were conducted to test the thermal and hygrothermal performance of the wall system in an extreme climatic environment, as well as in a real outdoor environment in Tallinn, Estonia. Finally, a simulation model was calibrated according to

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Hansen, Thor, Eva Møller, and Ruut Peuhkuri. "Towards moisture safe ventilated cold attics – Monitored conditions in a full-scale test building." E3S Web of Conferences 172 (2020): 23003. http://dx.doi.org/10.1051/e3sconf/202017223003.

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Existing building stock in Europe accounts for approx. 40% of the total energy consumption. Upgrading the thermal insulation of the existing buildings is an important measure to reduce heat losses through the building envelope. In some cases, increasing the thermal resistance of the construction may compromise the hygrothermal performance of the retrofitted construction. In particular, if vapour barrier is necessary for the good performance and it is practically difficult, if not even impossible, to install a well-sealed air- and vapour tight layer. To investigate the robustness of the hygroth

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Soulios, Vasilis, Ernst Jan de Place Hansen, and Ruut Peuhkuri. "Hygrothermal simulation assessment of internal insulation systems for retrofitting a historic Danish building." MATEC Web of Conferences 282 (2019): 02049. http://dx.doi.org/10.1051/matecconf/201928202049.

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The built environment is accountable for 1/3 of the European energy consumption. Thermal insulation is a key factor affecting the energy performance of buildings. Historic buildings typically were made with solid external walls of brick masonry or natural stone, rarely insulated afterwards. Often the buildings have worth-preserving façades making internal insulation the only feasible technique, however significantly modifying the hygrothermal performance of the façade. The research objective of this paper is to simulate the hygrothermal performance of solid masonry walls in an old Danish hospi

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Bajzecerová, Viktória, Eva Kormaníková, and Ján Kanócz. "Hygrothermal performance of timber-concrete composite panels – theoretical investigation." MATEC Web of Conferences 310 (2020): 00038. http://dx.doi.org/10.1051/matecconf/202031000038.

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The concrete layer as a part of the timber-concrete composite (TCC) element makes it possible to maintain the accumulated heat and thus reduce the energy required for heating. Especially for buildings used for a sauna, swimming pools or wellness. In the TCC cross-section due to uneven thermal and humidity deformation of both materials, additional stresses occur. It can lead to the failure of partial cross-sections or composite connection. The aim of the research is to investigate the influence of changing humidity and temperature conditions of the environment on the composite adhesively bonded

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Giada, Giuffrida, Rosa Caponetto, and Francesco Nocera. "Hygrothermal Properties of Raw Earth Materials: A Literature Review." Sustainability 11, no. 19 (2019): 5342. http://dx.doi.org/10.3390/su11195342.

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Raw earth historic and contemporary architectures are renowned for their good environmental properties of recyclability and low embodied energy along the production process. Earth massive walls are universally known to be able to regulate indoor thermal and hygroscopic conditions containing energy consumptions, creating comfortable interior spaces with a low carbon footprint. Therefore, earth buildings are de facto green buildings. As a result of this, some earthen technologies have been rediscovered and implemented to be adapted to the contemporary building production sector. Nevertheless, th

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Li, Shuangshuang, and Jianping Lin. "Method and Mechanism for Adhesion Recovery of Laser-Treated Aluminum Surface Exposed to Hygrothermal Environment." Journal of Physics: Conference Series 2437, no. 1 (2023): 012059. http://dx.doi.org/10.1088/1742-6596/2437/1/012059.

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Abstract Laser treatment is used to improve the surface adhesion performance of metal materials, including aluminum alloy. However, the adhesion performance of laser-treated aluminum alloy is reduced after the hygrothermal exposure during storage before bonding, obtaining the reliable surface adhesion is a challenge. In this paper, the nanosecond laser-treated aluminum alloy was exposed in a hygrothermal environment with 80°C 95%R.H. for 48h. Scanning electron microscopy, transmission electron microscopy and adhesion strength testing were used to characterize the physical/chemical properties a

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Pihelo, Peep, and Targo Kalamees. "Development of prefabricated insulation elements for buildings with aerated autoclaved concrete walls." E3S Web of Conferences 172 (2020): 18001. http://dx.doi.org/10.1051/e3sconf/202017218001.

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An extensive need for the refurbishment and renewal of existing building stock has been the focus of consideration for many decades, principally because of the high global energy consumption and pollution levels. This paper presents the results of the analysis of certain sets of timber frame prefabricated insulation elements for the major renovation of an apartment building. The hygrothermal measurements were taken, and a series of combinations with elements were analysed using building performance simulation software to compare the main hygrothermal properties. The critical initial moisture c

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Aggarwal, Chetan, and Sudhakar Molleti. "State-of-the-Art Review: Effects of Using Cool Building Cladding Materials on Roofs." Buildings 14, no. 8 (2024): 2257. http://dx.doi.org/10.3390/buildings14082257.

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Cool roofs are roofing systems designed to reflect significant solar radiation, reducing heat absorption and subsequent cooling energy demands in buildings. This paper provides a comprehensive review of cool roof technologies, covering performance standards, material options, energy-saving potential, and hygrothermal considerations. The review examines provisions in current codes and standards, which specify minimum requirements for solar reflectance, thermal emittance, and solar reflectance index (SRI) values. These criteria often vary based on factors like roof slope, climate zone, and build

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Nasr, Yara, Henri El Zakhem, Ameur El Amine Hamami, Makram El Bachawati, and Rafik Belarbi. "Comprehensive Review of Innovative Materials for Sustainable Buildings’ Energy Performance." Energies 16, no. 21 (2023): 7440. http://dx.doi.org/10.3390/en16217440.

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The building sector, one of the most energy-consuming, is among the most current topics due to the maturing concerns about the anthropogenic factor’s impact on CO2 quantities in the atmosphere and its association with global temperature rise. Using sustainable building materials is a promising alternative in building envelope applications to improve in-use energy efficiency. These materials, having a low environmental impact, the advantage of being renewable, and low embodied energy, contribute to global sustainability. This comprehensive literature review presents a broad overview of these ma

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Pihelo, Peep, Kalle Kuusk, and Targo Kalamees. "Development and Performance Assessment of Prefabricated Insulation Elements for Deep Energy Renovation of Apartment Buildings." Energies 13, no. 7 (2020): 1709. http://dx.doi.org/10.3390/en13071709.

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A need for the refurbishment and renewal of the existing building stock has been in focus for many decades, principally because of excessive global energy consumption and pollution. This paper presents a methodology and the results of analysis of choices of realizable sets of timber frame prefabricated insulation elements for major renovation of apartment buildings. Numerous combinations of elements with different characteristics were analyzed by applying measurements, interviews, and building performance simulation software, and thereupon their performance, installation eligibility, and concu

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Boukhelf, Fouad, Abdelkrim Trabelsi, Rafik Belarbi, and Mohamed Bachir Bouiadjra. "Experimental and numerical modelling of hygrothermal transfer: Application on building energy performance." Energy and Buildings 254 (January 2022): 111633. http://dx.doi.org/10.1016/j.enbuild.2021.111633.

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Martín-Garín, Alexander, José Antonio Millán-García, Jon Terés-Zubiaga, Xabat Oregi, Iñigo Rodríguez-Vidal, and Abderrahmane Baïri. "Improving Energy Performance of Historic Buildings through Hygrothermal Assessment of the Envelope." Buildings 11, no. 9 (2021): 410. http://dx.doi.org/10.3390/buildings11090410.

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The intervention on historic buildings through building energy retrofitting has become one of the current challenges of improving energy efficiency. Nonetheless, this building typology presents certain complexities. Among them, one of the most relevant is the protection on their façades due to the historical and/or artistic values of a given façade and, therefore, the addition of external thermal insulation is restricted. However, at the same time, in several of those buildings indoor surfaces do not present that architectural value, and then internal thermal insulation becomes a promising str

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Wu, Dong Xia, Zhuo Nan Yao, and Yan Shi. "Hygrothermal and Energy Performance Optimization on Bio-Based Envelope Integrated with PCM." Key Engineering Materials 1006 (December 26, 2024): 45–52. https://doi.org/10.4028/p-fyp8pw.

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Bio-based materials and phase change materials (PCMs) are currently being gradually noticed and emphasized as passive building envelopes. This study focuses on the effect of PCM placement and phase transition temperature on hygrothermal and energy performance. Systematic studies reveal that placing PCM with a phase transition temperature of 24-28 °C in the scenario PCM middle provides considerable results, reducing the summer temperature and relative humidity amplitude, heat load and moisture load by 5%, 0.03%, 8% and 5.8%, respectively. Besides, performance is further optimized with the scena

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Freire, Roberto Z., Gustavo H. C. Oliveira, and Nathan Mendes. "Development of regression equations for predicting energy and hygrothermal performance of buildings." Energy and Buildings 40, no. 5 (2008): 810–20. http://dx.doi.org/10.1016/j.enbuild.2007.05.014.

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Ishikawa, Kazuki, Chiemi Iba, Daisuke Ogura, Shuichi Hokoi, and Misao Yokoyama. "Hygrothermal Analysis of a Museum Storage Room for Metal Cultural Artifacts: Quantification of Factors Influencing High Humidity." Energies 14, no. 11 (2021): 3309. http://dx.doi.org/10.3390/en14113309.

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Several methods for appropriate control of the hygrothermal environment in museums to prevent the deterioration of cultural artifacts were presented in previous studies. However, few detailed hygrothermal simulation models have been used considering the hygrothermal performance of building components and airflow through gaps. Furthermore, hygrothermal properties of a type of storage facility with buffer spaces prevailing in Japan have not been quantitatively evaluated. The objectives of this study were to develop a detailed numerical model of a museum storage room with buffer spaces exhibiting

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Kim, Sughwan, Daniel Zirkelbach, and Hartwig M. Künzel. "Review of Methods to Create Meteorological Data Suitable for Moisture Control Design by Hygrothermal Building Envelope Simulation." Energies 16, no. 7 (2023): 3271. http://dx.doi.org/10.3390/en16073271.

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Hygrothermal simulations have become essential for sustainable and resilient building design because moisture is the major cause of problems in buildings. Appropriate meteorological input data are important to obtain meaningful simulation results. Therefore, this article reviews different methods to create Hygrothermal Reference Years (HRY) as severe or average climate inputs. The current standards define HRYs solely based on outdoor temperature, although moisture problems are caused by a combination of climate parameters, including driving rain and other loads. Therefore, there are also metho

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Conley, B., M. Carver, and S. Brideau. "Hygrothermal Monitoring of Two Pilot Prefabricated Exterior Energy Retrofit Panel Designs." Journal of Physics: Conference Series 2069, no. 1 (2021): 012028. http://dx.doi.org/10.1088/1742-6596/2069/1/012028.

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Abstract NRCan undertook a proof-of-concept project to retrofit a small building with prefabricated wall panels in 2017 in Ottawa, Canada. The retrofit used two wall panel designs: nailbase and woodframe. The Nailbase panel consisted of fiberglass batt, an expanded polystyrene (EPS) core, oriented strand board (OSB) sheathing, a rainscreen, and cladding. The Woodframe panel also featured OSB sheathing and included a 90 mm stand-off gap filled with dense-packed, fibrous insulation. A side-by-side comparison of cost, constructability, and performance was performed. The wall assemblies were instr

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Palani, Hevar, Hamed Khaleghi, Parisa Salehi, and Aslihan Karatas. "Assessing Hygrothermal Performance in Building Walls Engineered for Extreme Cold Climate Environments." Sustainability 15, no. 24 (2023): 16597. http://dx.doi.org/10.3390/su152416597.

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Buildings located in extreme cold climates encounter challenges (e.g., heat loss, condensation, and frozen utilities), especially within their wall envelopes. These challenges also play a pivotal role in occupant health, comfort, and the structural integrity of the building. While the existing literature has primarily focused on thermal performance, this study underscores the importance of evaluating hygrothermal performance within wall envelopes, given the existence of mold growth even in cases of high thermal resistance. Therefore, the aim of this study was to evaluate the hygrothermal perfo

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Skagseth, Vegard A., Erlend Andenæs, Bjørn Aas, Gabriele Lobaccaro, and Tore Kvande. "Hygrothermal performance of a CLT Ice Sports Arena in a Nordic climate." Journal of Physics: Conference Series 2654, no. 1 (2023): 012105. http://dx.doi.org/10.1088/1742-6596/2654/1/012105.

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Abstract Indoor ice sports arenas are complex buildings that typically consume large amounts of energy. The energy is mainly used to freeze the ice rink and to keep the indoor air temperature and relative humidity at appropriate levels. Reducing the energy consumption and the carbon footprint from construction, operation, and material use, presents certain challenges from a building physics point of view. These challenges are especially prominent if the ice sports arena is operated in a climate featuring summer seasons that are warmer than the indoor air temperature and winter seasons that are

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