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Journal articles on the topic 'Humid thermal ratio'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Liang, Shuang, and Wang Yan. "The Optimization Ratio Study of Steady State Heat Transfer and Dynamic Heat Transfer in Hot-Humid and Cold-Humid Area." Advanced Materials Research 935 (May 2014): 52–56. http://dx.doi.org/10.4028/www.scientific.net/amr.935.52.

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By means of the establishment of thermal stability evaluation model and simulating in Huafeng factory residential building ,the relationship between the D value and building thermal stability and the optimal distribution ratio are obtained.The results show that:at the shape coefficient≤0.40, the most optimal matching relation is :heat transfer coefficient is 1.0, thermal inertia index is 2.0;at the shape coefficient >0.40, the most optimal matching relation is :heat transfer coefficient is 0.8, thermal inertia index is 2.0.

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2

P.K. SHUKLA and TARUN ADAK. "Anthracnose disease dynamics of mango orchards in relation to humid thermal ratio under subtropical climatic condition." Journal of Agrometeorology 19, no. 1 (2017): 56–61. http://dx.doi.org/10.54386/jam.v19i1.756.

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Incidence and severity of mango anthracnose was studied during 2013, 2014 and 2015 for its relation with weather parameters. Twenty two mango orchards of cv. Dashehari, aged between 20-35 years in Lucknow district of Uttar Pradesh were selected for this study. The statistical analysis at different locations indicated highest incidence of 40.0, 29.2 and 29.6 per cent in three years respectively. Differences in disease severity were also observed among the years and within the orchards. Cooler months had high humid thermal ratio (HTR) values and warmer months mostly had low (1.2 to 3.5) HTR valu

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Sobhy, Mohammed, Mohammad Alakel Abazid, and Fatemah HH Al Mukahal. "Electro-thermal buckling of FG graphene platelets-strengthened piezoelectric beams under humid conditions." Advances in Mechanical Engineering 14, no. 4 (2022): 168781322210910. http://dx.doi.org/10.1177/16878132221091005.

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In this article, thermal buckling analysis of multilayer functionally graded graphene platelets (FGGPL) strengthened piezoelectric beam subjected to external electric voltage as well as humid conditions is illustrated. The effective Young’s modulus of the nanocomposite beam is estimated within the framework of Halpin-Tsai model. While, Poisson’s ratio, mass density, and piezoelectric properties are calculated by the rule of the mixture. Four FGGPL distribution types are considered in this study. A refined two-unknown beam theory considering shear deformation as well as thickness stretching eff

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Munonye, J. O., C. C. Munonye, and A. C. Esiegwu. "Assessment of thermal comfort of broiler birds in warm - humid climate." Tropical Agricultural Research and Extension 26, no. 3 (2023): 231–40. http://dx.doi.org/10.4038/tare.v26i3.5639.

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An experiment was conducted in a poultry house located at the Faculty of Agriculture, Alex Ekwueme Federal University, Ndufu Alike, Nigeria to assess the thermal comfort of broiler birds of 0-8 weeks old. ASHRAE standard instruments were used to measure environmental parameters within two years (May to July 2020: rainy season; Dec. to Feb. 2021: dry season and May to July 2021: rainy season; Dec. to Feb. 2022: dry season). During the survey, the birds were exposed to environmental variables such as air temperature, relative humidity, and airflow. A strong correlation was found between the ambi

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Alipour, Bahareh, Maryam Karami, and Parisa Heidarnejad. "Dynamic simulation of the performance of a solar assisted heat pump in different climates." International Journal of New Findings in Engineering, Science and Technology 2, no. 1 (2024): 64–73. http://dx.doi.org/10.61150/ijonfest.2024020108.

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One method to reduce energy consumption in buildings is using solar-assisted heat pumps, in which the combination of heat pump and solar collector is used to improve the thermal performance. In this paper, TRNSYS and EES software are used to simulate the performance of an indirect expansion solar-assisted heat pump. Dynamic simulation of the system is performed by changing parameters such as the mass flow rate of the collector working fluid and the collector area in five climates including Hot/Dry, Cold/Dry, Moderate/Humid, Hot/semi-Humid, and Hot/Humid. The results show that, in January, the

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Huang, Xianfeng, Congmin Li, and Zhixiang Zhuang. "Analysis of Height-to-Width Ratio of Commercial Streets with Arcades Based on Sunshine Hours and Street Orientation." Applied Sciences 11, no. 4 (2021): 1706. http://dx.doi.org/10.3390/app11041706.

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By extracting and simplifying the characteristics of commercial streets with arcades (Qilou) in Nanning, the tissue map of Qilou streets which reflects the urban morphology, including the road network form, block scale, building scale and other characteristics in a hot and humid area is obtained. In addition, the sunshine simulation is performed by using sunshine design software in an environment comprising streets with arcades to simulate street sunlight environments under various conditions. The relationship among street height-to-width ratio, sunshine hours, and street orientation angle is

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Liu, Qizhuo, Guilan Li, Jiaxin Wan, Wenchao Shi, Songtao Si, and Qi Wang. "Polyurethane porous elastomeric mixture composition design and aging properties." Journal of Physics: Conference Series 2961, no. 1 (2025): 012016. https://doi.org/10.1088/1742-6596/2961/1/012016.

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Abstract Polyurethane Porous Elastic Road Surface (PERS) has the characteristics of energy saving, emission reduction, carbon reduction, drainage, noise reduction, and de-icing. However, the aging properties of PERS have been rarely studied. The optimal gradation of the polyurethane mixtures has been designed in this paper. The concentration of polyurethane has been determined as 4.1%. Through scatter tests and segregation leakage tests, we analyzed the variation curves of the void ratio. Under aging conditions of thermo-oxidative, humid-heat, and without aging, through seepage test and wave t

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Wang, Junhui, Zhijun Wan, Hongwei Zhang, et al. "Effects of Thermal Water Upwelling on Microclimate Change in the High Geo-Temperature Roadway." Shock and Vibration 2021 (March 3, 2021): 1–14. http://dx.doi.org/10.1155/2021/6639413.

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Deep-circling thermal water upwelling and trickling to high geo-temperature roadway obviously alter the microclimate in mines, which brings difficulty to the prediction of airflow temperature and humidity. This is the basis of air-conditioning cooling load calculation. The heat and mass transfer between trickling water and airflow is rather complicated. Moreover, humid air exhibits the accumulation effect of heat and humidity in the long-distance flow process. In this paper, an apparatus was designed and developed to explore the influence of thermal water trickling on the airflow thermal param

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Liu, Xiaoyan, Ping Li, and Jingsheng Pan. "Study on the aging performance of SBS modified asphalt in humid and hot environment." PLOS One 20, no. 6 (2025): e0325103. https://doi.org/10.1371/journal.pone.0325103.

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This study focused on the aging issues of asphalt pavement in high-temperature and high-humidity climatic zones, using SBS-modified asphalt with different additive contents as research objects to systematically investigate the aging evolution mechanisms under coupled hygrothermal conditions. A dual-temperature control system (60°C and 70°C) was constructed to conduct thermal-oxidative aging and wet-dry cycle aging tests. Multidimensional indicators including penetration ratio, softening point ratio, and ductility ratio were utilized to characterize the time-dependent aging characteristics of m

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Al-Tamimi, Nedhal, and Abdultawab Qahtan. "Influence of Glazing Types on the Indoor Thermal Performance of Tropical High-Rise Residential Buildings." Key Engineering Materials 692 (May 2016): 27–37. http://dx.doi.org/10.4028/www.scientific.net/kem.692.27.

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In tropical climates, the solar radiation absorption of glazed windows results in overheated indoor environments and increased cooling energy loads during daytime. Meanwhile, situations differ during nighttime. The present study focuses on the effects of glazing type on the indoor temperature in high-rise residential buildings in the hot and humid climate of Malaysia. The primary objective of this study is to assess the effects of six glazing types on the indoor air temperature of the base case room oriented toward the southwest with a Window Wall Ratio WWR of 45% under both ventilated and unv

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Uprety, Sanjaya, Shiva Kafley, and Barsha Shrestha. "Window to wall ratio and orientation effects on thermal performance of residential building: A case of Butwal Sub-Metropolis." Journal of Engineering Issues and Solutions 1, no. 1 (2021): 129–37. http://dx.doi.org/10.3126/joeis.v1i1.36833.

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The orientation and glazed surface area used for windows in a building have significant effects on its indoor thermal comfort and overall energy consumption. The increasing use of glazed windows and lack of consideration of orientation in building design have become a major problem in warm and humid regions as windows cover sensitive skin areas for the exchange of energy leading to increased solar gain inside the building. This paper describes the effect of the varied ‘area ratio of glazed window to the wall for different building orientations’ on the thermal performance of the residential bui

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Baumbach, Miriam O., Lucas T. S. Ramos, Raquel P. Batista, Raquel D. Oliveira, and Paulo H. R. Borges. "Portland versus alkali-activated cement wall panels containing mine tailing as aggregate: one-story house thermal performance simulation in a Brazilian and Portuguese hot and humid climate." MATEC Web of Conferences 274 (2019): 03003. http://dx.doi.org/10.1051/matecconf/201927403003.

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Alkali-activated materials (AAM) compared to Portland cement (PC) may significantly reduce the carbon dioxide emissions, as well as the consumption of non-renewable natural resources in civil engineering applications. Further environmental advantages are possible if natural aggregates used for mortars and concretes are replaced with residues and wastes from industrial or mining activities. This paper compares the performance of PC with AAM as binders in cementitious wall panels for external cladding in hot and humid climate. Three different cementitious matrices are proposed, consisting of eit

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Hu, Yehong, Wen Xie, Feng Zou, et al. "Study on Mechanical and Microscopic Properties of Fly Ash Cement-Based Materials in High Geothermal Environment." Advances in Civil Engineering 2022 (May 31, 2022): 1–8. http://dx.doi.org/10.1155/2022/1768562.

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Through simulating a hot and humid environment of high-ground-temperature tunnel and taking advantage of mechanics performance testing, differential thermal analysis (DTA) technology, and scanning electron microscope (SEM) observation technology, the macroscopic and microscopic properties of cement-based materials and their performance improvement measures can be investigated. Also, the mechanism of improvement can be revealed from the perspective of the hydration degree and microstructure. The experimental results indicate that under the hot and humid environment of high ground temperature, a

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Luo, Zhihua, Wangning Mu, Yingzhi Liang, Zhihui Xiao, Zhiqiang Zhou, and Yuankui Li. "Impact of the Pilotis Ratio on the Summer Wind and Thermal Environment in Shaded Areas of Enclosed Courtyards in Hot and Humid Regions." Sustainability 17, no. 10 (2025): 4689. https://doi.org/10.3390/su17104689.

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Enclosed courtyards with partially ground floor pilotis represent a prevalent architectural spatial configuration in hot-humid regions, where the shaded outdoor areas serve as frequently utilized spaces for heat avoidance and rest. This study employed a combined approach of ENVI-met simulations and field measurements to investigate the wind and thermal environment in the shaded areas of courtyards under 40 different pilotis width configurations. The Comfortable Wind Zone Ratio (CWZR) and Physiological Equivalent Temperature (PET) were used as primary evaluation metrics to systematically invest

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Kharun, Makhmud, and Alexander P. Svintsov. "Soil-Cement Ratio and Curing Conditions as the Factors of Soil-Concrete Strength." Key Engineering Materials 730 (February 2017): 358–63. http://dx.doi.org/10.4028/www.scientific.net/kem.730.358.

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Soil-concrete is widely used to strengthen the foundation footings, in the construction of roads and railways, as well as for the production of bricks and pavement tiles. One of the most important physical and mechanical properties of soil-concrete is the compressive strength. We carried out a study of soil-concrete strength depending on its curing conditions and percentage of cement. For our study we used loam soil with the plasticity index of Ip = 12.3, Portland cement of type I, ground limestone with the specific surface of 4500 cm2/g, polycarboxylate based superplasticizer and water for mi

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Rajput, Tripti Singh, and Albert Thomas. "Analyzing the effects of passive design strategies on building ventilation performance and thermal comfort using simulation-based approach." E3S Web of Conferences 396 (2023): 02023. http://dx.doi.org/10.1051/e3sconf/202339602023.

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One of the sustainable approaches to improving indoor thermal comfort and building ventilation efficiency, particularly in developing and populated countries, is to implement the optimum passive design solutions. However, the interaction between ventilation performance, indoor thermal comfort, and passive design features of buildings is scarcely studied in the domain of airflow modeling. Therefore, this study aims at assessing the ventilation performance and indoor thermal comfort with regards to passive design strategies, specifically, opening characteristics such as the Opening to Wall ratio

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17

Kaser, Georg. "Glacier-climate interaction at low latitudes." Journal of Glaciology 47, no. 157 (2001): 195–204. http://dx.doi.org/10.3189/172756501781832296.

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AbstractIn the low latitudes there is an absence of major thermal seasonality, yet there are three different climate regimes related to global circulation patterns and their seasonal oscillation: the humid inner tropics, the dry subtropics and, intermediate between these two, the outer tropics. For the respective glacier regimes the vertical profiles of specific mass balance (VBPs) are modeled considering vertical gradients of accumulation, air temperature and albedo, the duration of the ablation period and a factor for the ratio between melting and sublimation. The model is first calibrated w

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18

Zhu, Shuyan, Chenlong Ma, Zhongping Wu, Yuqing Huang, and Xiao Liu. "Exploring the Impact of Urban Morphology on Building Energy Consumption and Outdoor Comfort: A Comparative Study in Hot-Humid Climates." Buildings 14, no. 5 (2024): 1381. http://dx.doi.org/10.3390/buildings14051381.

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Research simultaneously examining building energy consumption and outdoor thermal comfort within urban environments remains limited. Few studies have delved into the sensitivity of design parameters based on building energy consumption and outdoor thermal comfort. The purpose of this study is to investigate the correlations between urban morphological design parameters and performance indicators, focusing on building energy consumption and outdoor thermal comfort (UTCI), across different urban block layouts in hot-humid regions, like Guangzhou. By establishing six fundamental morphological mod

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Li, Jinhan, Xiaofang Shan, and Qinli Deng. "Study on the Impact of Design Factors of Piloti Forms on the Thermal Environment in Residential Quarters." Buildings 14, no. 5 (2024): 1303. http://dx.doi.org/10.3390/buildings14051303.

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According to piloti design, the outdoor thermal environment can be improved in cities with hot summer conditions. Taking Chinese cities with a hot summer and cold winter as the research object, this paper discusses the improvement of the outdoor thermal environment of residential districts in summer by considering piloti design factors. In this article, according to our investigation of piloti design in Wuhan, a basic model of the overhead layer in the Wuhan residential area is presented, along with the effects of different piloti ratios (0–80%), piloti heights (2–6 m), and greening rates (30–

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Chen, Hui, Yin Wei, Yaolin Lin, et al. "Investigation on the Thermal Condition of a Traditional Cold-Lane in Summer in Subtropical Humid Climate Region of China." Energies 13, no. 24 (2020): 6602. http://dx.doi.org/10.3390/en13246602.

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A Chinese traditional narrow street, named Cold-Lane, can create a microclimatic zone that provides pedestrian thermal comfort under hot and humid climate conditions. This phenomenon was observed through experimental measurement during the summer of 2016. The heat transfer rate over the pedestrian body surface was calculated to reveal why pedestrians experience a cool sensation, and computational flow dynamics (CFD) simulation was carried out to study the influence of the street aspect ratio on the shading effect. It was found that the perception of thermal comfort can be attributed mainly to

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Amal, Barman, Roy Madhumita, and Dasgupta Arpan. "Energy use in Building Envelope of a Residential Apartment Building in the Warm and Humid Climate of Guwahati, Assam." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 9, no. 11 (2020): 119–26. https://doi.org/10.35940/ijitee.K7711.0991120.

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In recent years, Guwahati city is witnessing a rapid urban growth due to ever-increasing human population sacrificing existing green pockets. This constant increase of built form is resulting in environmental imbalances and microclimate changes, contributing in a rise of indoor air temperature and that ultimately results a gradual increase in the energy consumption to maintain indoor thermal comfort in the inner-city areas. Although the urban growth pattern of Guwahati is controlled by prevailing GMDA building bye-laws, these building parameters are unable to control the organic growth of the

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Musorina, Tatiana, Aleksandr Katcay, Anna Selezneva, and Victor Kamskov. "Comparison of Thermal Stability of Dry High-strength Concrete and Wet High-strength Concrete." E3S Web of Conferences 33 (2018): 02048. http://dx.doi.org/10.1051/e3sconf/20183302048.

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High-strength concrete is a modern material, which occupies it`s own niche on the construction material market. It is applicable in a large-scale high-rise construction, particularly an underground construction is a frequently used solution for a space saving. Usually underground structure is related to a wet usage environment. Though not all properties of the high-strength concrete are investigated to the full extent. Under adverse climatic conditions of the Russian Federation one of the most important properties for constructional materials is a thermal capacity. Therefore, the main purpose

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Sun, Qianqian, Zhixing Luo, and Lujian Bai. "The Impact of Internal Courtyard Configuration on Thermal Performance of Long Strip Houses." Buildings 13, no. 2 (2023): 371. http://dx.doi.org/10.3390/buildings13020371.

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A courtyard is an essential space for natural lighting and natural convective ventilation of residential buildings in hot-humid climates. This study focuses on the internal courtyard configuration on the thermal performance of long strip houses (LSH) in the hot-climate area of Hainan Island, China. The aim is to identify the best design parameters for the courtyard to improve thermal comfort in modern LSH design. Appropriate strategies, including Mahoney table, field investigation, and CFD simulation, are used to determine thermal performance. As a result, the design guidelines of the courtyar

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Rajapaksha, Upendra. "Heat Stress Pattern in Conditioned Office Buildings with Shallow Plan Forms in Metropolitan Colombo." Buildings 9, no. 2 (2019): 35. http://dx.doi.org/10.3390/buildings9020035.

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This paper critically evaluates indoor overheating of multilevel office buildings in Colombo—a tropical warm humid city. The work questions the building morphological characteristics on thermal performance and indoor climate, thus the levels of Building Energy Indices (BEI) of air conditioned buildings. Pattern of heat stress on buildings due to building characteristics and its relationship to the BEI were identified. A study of 87 multilevel office buildings contributed to identify two critical cases in shallow plan form with similar morphological characteristics such as wall-to-window ratio,

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Park, Jeong Yeon, Siwoo Lee, Yangdo Kim, and Young Bok Ryu. "Antimicrobial Activity of Morphology-Controlled Cu2O Nanoparticles: Oxidation Stability under Humid and Thermal Conditions." Materials 17, no. 1 (2024): 261. http://dx.doi.org/10.3390/ma17010261.

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Metal oxides can be used as antimicrobial agents, especially since they can be fabricated into various forms such as films, masks, and filters. In particular, the durability of antimicrobial agents and the duration of their antimicrobial activity are important factors that determine their suitability for a specific purpose. These factors are related to the morphology and size of particles. The metal oxide Cu2O is often oxidized to CuO in various conditions, which reduces its antimicrobial activity. This study focused on the oxidation of nanoparticles of Cu2O with three morphologies, namely, sp

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Araki, Hidefumi, Shinichi Higuchi, Shinya Marushima, and Shigeo Hatamiya. "Design Study of a Humidification Tower for the Advanced Humid Air Turbine System." Journal of Engineering for Gas Turbines and Power 128, no. 3 (2005): 543–50. http://dx.doi.org/10.1115/1.2132384.

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The advanced humid air turbine (AHAT) system, which can be equipped with a heavy-duty, single-shaft gas turbine, aims at high efficiency equal to that of the HAT system. Instead of an intercooler, a WAC (water atomization cooling) system is used to reduce compressor work. The characteristics of a humidification tower (a saturator), which is used as a humidifier for the AHAT system, were studied. The required packing height and the exit water temperature from the humidification tower were analyzed for five virtual gas turbine systems with different capacities (1, 3.2, 10, 32, and 100MW) and pre

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Yaakob, Yusli. "Overall Thermal Transfer Value: A Preliminary Study of Residential Building in Hot-Humid Climate." Scientific Research Journal 22, Special Issue (2025): 189–205. https://doi.org/10.24191/srj.v22is.12788.

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Malaysia buildings have high intensity of solar radiation and high daily air temperature. Due to excessive heat and high air temperature can cause discomfort, and the occupants need to use the air-conditioning system. The use of air-conditioning has influence to increasing the energy consumption in buildings. To tackle this issue, the Overall Thermal Transfer Value (OTTV) standard as an assessment tool is used to measure of heat gain in the building. OTTV standard is applicable to minimize energy consumption of air conditioning. This study aimed to investigate the OTTV in single terrace house.

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Martseva, S. V., I. L. Kulinich, and A. S. Panasyugin. "Assessment of environmental damage caused by the storage of aluminum recycling slags by enterprises with capacity up to 200 thousand aluminum alloys per year." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 4 (January 20, 2023): 128–31. http://dx.doi.org/10.21122/1683-6065-2022-4-128-131.

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Based on the empirical data, specific rates of ecological tax for the emission of pollutants into the atmosphere, approved by the tax code of Belarus and thermodynamic calculations the approximate specific ratio of hydrolysis products and products of their thermal oxidation, formed by exposure to humid atmosphere on the aluminum slag was determined.The work shows that the damage from atmospheric pollution by an aluminum recycling plant with a capacity of 200 thousand tons can be from 0.66 to 52.7 million U.S. dollars, that is, depending on the territorial location of the pollution source for t

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Xun, Yi, Xiaodan Huang, Qimin Zeng, Meilan Ye, and Yufeng Guo. "Study on Outdoor Thermal Comfort of Commercial and Residential Mixed-Use Blocks in Hot and Humid Climates: Taking Guangzhou, China as an Example." Energies 18, no. 8 (2025): 2015. https://doi.org/10.3390/en18082015.

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This study evaluated outdoor thermal comfort in commercial and residential mixed-use blocks in hot and humid climates. A subjective survey questionnaire examined thermal environment metrics, individual data, and 141 pedestrian responses. The findings indicated that the average air temperature (31.8 °C) and relative humidity (65.8%) of the four mixed-use blocks were considerably high. The thermal environment differed between each block owing to the influence of block texture and building form. In addition, subjective sensation scores differed among the blocks, aligning with subjective preferenc

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Lapisa, Remon, Arwizet Karudin, M. Martias, et al. "Effect of skylight–roof ratio on warehouse building energy balance and thermal–visual comfort in hot-humid climate area." Asian Journal of Civil Engineering 21, no. 5 (2020): 915–23. http://dx.doi.org/10.1007/s42107-020-00249-9.

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Bedra, Komi Bernard, Bohong Zheng, Jiayu Li, and Xi Luo. "A Parametric-Simulation Method to Study the Interconnections between Urban-Street-Morphology Indicators and Their Effects on Pedestrian Thermal Comfort in Tropical Summer." Sustainability 15, no. 11 (2023): 8902. http://dx.doi.org/10.3390/su15118902.

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Numerous studies have explored the impact of urban morphology and geometry on outdoor thermal comfort, intending to provide practical guidelines for urban designers. However, research findings have been inconsistent, in part due to differences in the climatic settings and the investigated heat-stress indicators. This study proposes a parametric-simulation framework to observe the behavior of thermal comfort according to the possible combinations of building density (BD), street aspect ratio (AR), and orientation. Conducted specifically under a hot-and-humid tropical-savanna summer condition, t

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Xing, Weiqi, Jianli Hao, Wenting Ma, Guobin Gong, Abdul-Sattar Nizami, and Yu Song. "ENERGY PERFORMANCE OF BUILDINGS USING ELECTROCHROMIC SMART WINDOWS WITH DIFFERENT WINDOW-WALL RATIOS." Journal of Green Building 17, no. 1 (2022): 3–20. http://dx.doi.org/10.3992/jgb.17.1.3.

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ABSTRACT The electrochromic (EC) smart window is a promising intelligent technology for improving the energy performance of a building. When applying a new glazing material, the window-wall ratio (WWR) is regarded as a significant factor related to daylight and building energy losses. However, there have not been any studies examining the relationship between the efficiency of the EC smart window and the WWR. The aim of this study is to provide strategies for mitigating energy losses and environmental impacts from window elements in an office building. It focuses on optimizing the WWR of EC sm

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Xing, Weiqi, Jianli Hao, Wenting Ma, Guobin Gong, Abdul-Sattar Nizami, and Yu Song. "ENERGY PERFORMANCE OF BUILDINGS USING ELECTROCHROMIC SMART WINDOWS WITH DIFFERENT WINDOW-WALL RATIOS." Journal of Green Building 17, no. 1 (2022): 3–20. http://dx.doi.org/10.3992/1943-4618.17.1.3.

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ABSTRACT The electrochromic (EC) smart window is a promising intelligent technology for improving the energy performance of a building. When applying a new glazing material, the window-wall ratio (WWR) is regarded as a significant factor related to daylight and building energy losses. However, there have not been any studies examining the relationship between the efficiency of the EC smart window and the WWR. The aim of this study is to provide strategies for mitigating energy losses and environmental impacts from window elements in an office building. It focuses on optimizing the WWR of EC sm

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Hakim, Muhammad Naufal, Sri Nastiti Nugrahani Ekasiwi, and FX Teddy Badai Samodra. "Impact of Vertical Void Design on Ventilation Performance of Boarding Houses in Hot Humid Climate." Nature: National Academic Journal of Architecture 12, no. 1 (2025): 19–36. https://doi.org/10.24252/nature.v12i1a2.

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Vertical voids can enhance the performance of natural ventilation, improving physiological cooling and indoor air quality (IAQ), particularly in boarding houses as shared living spaces. The effect of void design on ventilation is influenced by various design variables, such as the proportion of openings, the void-to-building ratio, the void aspect ratio, and the void’s position within the building. The effects of vertical void towards ventilation efficiency can be improved by modifying these variables. This study investigates the impact of these design variables on ventilation performance thro

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Wu, Zhenling, Yimin Xu, and Zhuoyao Wang. "Multi-objective optimization of energy, view, daylight and thermal comfort for building’s fenestration and shading system in hot-humid climates." PLOS One 20, no. 6 (2025): e0325290. https://doi.org/10.1371/journal.pone.0325290.

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Well-designed building envelope components are essential in addressing global warming. Fenestration and shading system (F&SS) not only promote energy conservation and emission reduction but also enhance occupant satisfaction by improving indoor environments. However, existing research often prioritizes energy use, daylight, and thermal comfort while neglecting view quality, a factor closely tied to mental health and productivity. This study employs multi-objective optimization (MOO) to balance energy consumption, view quality, daylight, and thermal comfort in office buildings located in ho

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Karuppaiah, V., P. S. Soumia, A. Thangasamy, P. D. Wagh, N. Dilipsundar, and M. Singh. "Humid Thermal Ratio: An Index to Understand the Population Dynamics of Thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), in Bulb Onion." African Entomology 27, no. 2 (2019): 410. http://dx.doi.org/10.4001/003.027.0410.

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Boutet, Maria Laura, and Alejandro Luis Hernández. "Validación de propuestas de optimización ambiental de un jardín de infantes de tipología compacta, en clima muy cálido-húmedo." Revista Hábitat Sustentable 12, no. 1 (2022): 24–43. http://dx.doi.org/10.22320/07190700.2022.12.01.02.

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This article presents the validation procedure of optimization proposals for a compact-typology kindergarten prototype, following passive bioclimatic design guidelines, using dynamic simulation physical models calibrated with onsite measurements. The objective is to verify the parameters for the glazed area (gA), weighted average solar absorptance (), and total envelope area (envelopeA), using them as input data to obtain correlations of glazing Factors (gF) into a tool to estimate optimal glazed areas, aiming at integrating thermal and visual comfort in the design of educational spaces, in th

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Subhashini, S., and K. Thirumaran. "CFD simulations for examining natural ventilation in the learning spaces of an educational building with courtyards in Madurai." Building Services Engineering Research and Technology 41, no. 4 (2019): 466–79. http://dx.doi.org/10.1177/0143624419878798.

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This paper attempts to investigate the potential of courtyards in optimizing natural ventilation and improving comfort levels in the learning spaces of a naturally ventilated educational institution with courtyards in the warm-humid climatic region of Madurai. Field measurements and experimental studies were carried out to predict the indoor and outdoor environmental conditions. The numerical study was carried out using computational fluid dynamics-based simulations using Ansys Fluent as the solver. The main aim of the simulation is to understand the airflow pattern and air velocity fields ins

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ACOSTA, ISRAEL, and MARGARITA CASTILLO TELLEZ. "EXERGETIC ANALYSIS OF THE SOYBEAN DRYING PROCESS WITH SOLAR ENERGY IN HOT-HUMID CLIMATES." DYNA 98, no. 5 (2023): 450–54. http://dx.doi.org/10.6036/10536.

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Recently, solar dryers research has focused on determining the drying kinetics and its description from mathematical models; however, exergetic studies are relatively limited. Theoretical and experimental studies are required to break the knowledge barrier with this approach, assessing the maximum potential useful work wasted (exergy loss) by a system as it equilibrates with a reference environment (environment). Through the instrumentation of cabinet–type solar dryers, this work presents the exergetic analysis to evaluate the heat and mass transfer processes of soybean in hot-humid climates.

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Guenifed, Abdelhalim Farouk, Ismail Bensaid, and Ahmed Saimi. "Study of hygrothermal environment impact on the vibration behavior of thick nanocomposite beams reinforced with multilayer Graphene Nanoplatelet." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e11515. https://doi.org/10.54021/seesv5n2-618.

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This paper aims to investigate the free vibration of a multilayer piezo-electric beam strengthened with functionally graded graphene platelets (FG-GPLRC) and subjected to a consistent increase in temperature and humid external loads. Graphene platelets (GPLs) are supposed to be dispersed either uniformly or layerwise form in the polymeric matrix, with a variety of patterns configurations taken into consideration. The rule of mixing is employed to evaluate Poisson's ratio and mass density features. In order to estimate the efficient Young's modulus, the modifier Halpin-Tsai model has been emplo

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Lee, Kanghyun, and Robert D. Brown. "Estimating Terrestrial Radiation for Human Thermal Comfort in Outdoor Urban Space." Atmosphere 12, no. 12 (2021): 1701. http://dx.doi.org/10.3390/atmos12121701.

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Cities inadvertently create warmer and drier urban climate conditions than their surrounding areas through urbanization that replaces natural surfaces with impervious materials. These changes cause heat-related health problems and many studies suggest microclimatic urban design (MUD) as an approach to address these problems. In MUD-related research, although terrestrial radiation plays an important role in human thermal comfort and previous studies use thermal comfort models to identify human heat stress, few studies have addressed the effect of terrestrial radiation. This study develops the g

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Oliveira, Candi Citadini de, Ricardo Forgiarini Rupp, and Enedir Ghisi. "Assessment of Air Quality Perception and Its Effects on Users’ Thermal Comfort in Office Buildings." Sci 3, no. 4 (2021): 47. http://dx.doi.org/10.3390/sci3040047.

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Since people spend most of their time in indoor environments, the objective of this work was to study indoor air quality and its effects on users’ thermal comfort. Based on previous data from a building with a central air-conditioning system and two mixed-mode buildings located in the humid subtropical climate of Florianópolis, southern Brazil, statistical analyses were performed. Each user’s subjective answer obtained through a questionnaire was combined with the corresponding environmental conditions measured by instruments. Results showed that improvement in air quality was associated with

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Hadiwijaya, Bram, Steeve Pepin, Pierre-Erik Isabelle, and Daniel F. Nadeau. "The Dynamics of Transpiration to Evapotranspiration Ratio under Wet and Dry Canopy Conditions in a Humid Boreal Forest." Forests 11, no. 2 (2020): 237. http://dx.doi.org/10.3390/f11020237.

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Humid boreal forests are unique environments characterized by a cold climate, abundant precipitation, and high evapotranspiration. Transpiration ( E T ), as a component of evapotranspiration (E), behaves differently under wet and dry canopy conditions, yet very few studies have focused on the dynamics of transpiration to evapotranspiration ratio ( E T / E ) under transient canopy wetness states. This study presents field measurements of E T / E at the Montmorency Forest, Québec, Canada: a balsam fir boreal forest that receives ∼ 1600 mm of precipitation annually (continental subarctic climate;

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Manaswini Devi, S., Ebin Horrison, and Sheetal Amraotkar. "Evaluating the Impact of Transition spaces on the Indoor comfort conditions of a Naturally Ventilated Institution Building." IOP Conference Series: Earth and Environmental Science 1210, no. 1 (2023): 012014. http://dx.doi.org/10.1088/1755-1315/1210/1/012014.

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Abstract Transition spaces connect between the interior space and the exterior environment and it acts as an intermediate or a third space. A well-designed transition space acts as a microclimate modifier for the interior spaces. The current study focuses on the role of transition spaces in creating a comfortable thermal environment in classrooms of an educational institute, located in a region with hot humid climate. The aim of the study is to investigate the impact of transition spaces upon the creation of indoor thermal comfort. For this study, the quantitative data was collected through fi

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Deng, Lianhua, Shaofeng Niu, Angui Li, Xianglin Fan, Minqiang Li, and Anjing Li. "Indoor air temperature and humidity variation of a greenhouse base on field test: A case study in Shandong." E3S Web of Conferences 356 (2022): 03032. http://dx.doi.org/10.1051/e3sconf/202235603032.

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The indoor thermal and humid environment of the solar greenhouse, especially the air humidity, is studied by the field test and psychrometric chart. First, the air temperature and relative humidity, and solar radiation in the greenhouse were tested by field tests. According to the test results, Solar radiation has a great influence on the air temperature and relative humidity in the greenhouse. The air temperature and relative humidity in a greenhouse vary dramatically in the presence of solar radiation. At night, although the indoor air temperature meets the requirements of crop growth, indoo

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Naik, B. Kiran, Mullapudi Joshi, Palanisamy Muthukumar, et al. "Investigating Solid and Liquid Desiccant Dehumidification Options for Room Air-Conditioning and Drying Applications." Sustainability 12, no. 24 (2020): 10582. http://dx.doi.org/10.3390/su122410582.

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This study reports on the investigation of the performance of single and two-stage liquid and solid desiccant dehumidification systems and two-stage combined liquid and solid desiccant dehumidification systems with reference to humid climates. The research focus is on a dehumidification system capacity of 25 kW designed for room air conditioning application using the thermal models reported in the literature. RD-type silica gel and LiCl are used as solid and liquid desiccant materials, respectively. In this study, the application of proposed system for deep drying application is also explored.

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Ingersoll, J. G. "Analytical Determination of Soil Thermal Conductivity and Diffusivity." Journal of Solar Energy Engineering 110, no. 4 (1988): 306–12. http://dx.doi.org/10.1115/1.3268272.

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A simple model has been developed that can be used to calculate the soil thermal conductivity and diffusivity on the basis of the following factors: soil porosity; soil water content; conductivity, specific heat, and density of the constituents of soil, i.e., solid matter, water, and air. The model assumes that the void space in soil can be presented by a combination of plane fissures, whose direction is either parallel to the heat flow or perpendicular to it. A coefficient introduced to account for this combination in the two directions can be estimated from measured data as a function of the

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White, Loren D., and Michael Koziara. "Surface Thermodynamic Gradients Associated with Gulf of Mexico Sea-Breeze Fronts." Advances in Meteorology 2018 (September 26, 2018): 1–18. http://dx.doi.org/10.1155/2018/2601346.

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High spatial/temporal resolution mobile transects were used to examine the thermal and moisture structure of the sea-breeze front (SBF) along the Mississippi coast during August 2014 and 2015. Compared to most similar studies, conditions were much warmer and more humid. Results show a 1-2 g/kg increase in mixing ratio across the mature SBF zone, and up to a 2.5°C temperature decrease. When SBF radar fine lines are identifiable, their position agrees very well with surface thermodynamic changes. Although temperatures were cooler at the coast, microscale offsets in location of thermal, moisture,

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Li, Li, Junfeng Cheng, Zhichao Liu, et al. "The Impact of Coverage Forms of Exterior Vertical Greening Walls on the Thermal Environmental Benefits of Buildings in Hot and Humid Regions." Buildings 14, no. 12 (2024): 3840. https://doi.org/10.3390/buildings14123840.

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Architectural vertical green walls can mitigate the urban heat island effect, provide shade and cooling, reduce energy consumption, improve a microclimate, and increase indoor comfort. However, an excessive pursuit of high coverage may diminish the benefit ratio and adversely affect ventilation and lighting. Field measurements were conducted in the hot and humid Guangzhou area to investigate the thermal benefits of external vertical green walls with varying green coverage and diverse layouts, encompassing effects such as shading, insulation, cooling, and humidification. Analyses were conducted

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Kulkarni, Pankaj N., C. K. Jadhav, A. S. Nipate, Alaknanda M. Dodake-Supekar, and C. H. Gill. "Stability Indicating RP-HPLC Method Development and Validation for Dexamethasone." Asian Journal of Chemistry 32, no. 3 (2020): 587–91. http://dx.doi.org/10.14233/ajchem.2020.22462.

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A new, simple, reliable and reproducible stability indicating RP-HPLC assay method has been developed for quantitative analysis of dexamethasone from dexamethasone tablets. This developed method has been validated according to ICH guideline with respect to system suitability, specificity, precision, linearity, accuracy and robustness. An isocratic condition of mobile phase water (0.1% orthophosphoric acid):acetonitrile in a ratio of 60:40, v/v at a flow rate of 1.0 mL/minute over RP 2.5 Fortis C18, 100 × 4.6 mm, 2.5 μm, column was at 27 ºC maintained. This method is specific and showed excelle

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