Article
Green & Sustainable Science & Technology
Qudama Al-Yasiri, Mohammed Alktranee, Marta Szabo, Muslum Arici
Summary: Integrating phase change material (PCM) and natural night ventilation (NNV) has significantly improved indoor thermal comfort in hot locations. The study found that window orientation has minimal effect on NNV, but the Northeast orientation and larger window size can lead to better indoor temperature reduction.
Article
Thermodynamics
Xing Xie, Xing-ni Chen, Bin Xu, Gang Pei
Summary: This study examines the impact of window-wall ratio on indoor thermal comfort, finding that public buildings generally face challenges but also present unique advantages. Considering the window-wall ratio in different seasons and occupancy periods can help improve thermal comfort.
Article
Thermodynamics
Ana Culic, Sandro Nizetic, Petar Solic, Toni Perkovic, Aleksandar Andelkovic, Velimir Congradac
Summary: In this study, a short-term field investigation using smart monitoring devices was conducted to explore personal thermal comfort. The results showed a positive correlation between wrist skin temperature and thermal comfort evaluation for both female and male users. Additionally, the CO2 concentration in the office had a positive correlation with thermal comfort for male users. These findings endorse the application of wearable devices for detecting personal thermal comfort and provide a basis for further development of heating/cooling systems in buildings.
Article
Construction & Building Technology
Yuxin Wu, Aleksi Maki, Juha Jokisalo, Risto Kosonen, Simo Kilpelainen, Sonja Salo, Hong Liu, Baizhan Li
Summary: Demand response of district heating is a useful tool for reducing costs and emissions in the energy system, but it is important to consider thermal comfort. An experimental study showed that limiting the surface temperature of windows can help minimize draught risk, especially with poorly insulated windows.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Ayse Fidan Altun
Summary: The building envelope significantly affects energy consumption. This study found optimal design parameters for the building envelope, such as insulation thickness, orientation, glazing type, and the window-to-wall ratio, to reduce energy consumption.
Article
Construction & Building Technology
Huijun Wu, Yuying Liang, Jianming Yang, Jian Cen, Xianyong Zhang, Lei Xiao, Ruibing Cao, Gongsheng Huang
Summary: This study investigates the nonuniform distribution of thermal resistance and capacitance in exterior walls built with superthermal aerogel insulating panels. By using a thermal nonuniformity factor, the researchers explore how to engineer the wall to improve energy efficiency. The results show that walls with a high nonuniformity factor can greatly decrease wall heat flux.
ENERGY AND BUILDINGS
(2022)
Article
Construction & Building Technology
Pooya Lotfabadi, Polat Hancer
Summary: This research proposes a model to fill the gap in architectural regulations, developing a multi-objective optimization model based on a genetic algorithm. The results show that a window-to-wall ratio of 20-50% is acceptable in the examined office building in Northern Cyprus, with a preference for 30-50% reflective glass.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Chenyan Song, Amy D. D. Droitcour, Shekh M. M. Islam, Avon Whitworth, Victor M. M. Lubecke, Olga Boric-Lubecke
Summary: Cognitive buildings can adjust lighting, temperature, ventilation, and other environmental parameters based on occupants' responses to the built environment. Doppler-radar based sensors have shown accurate occupancy detection and estimation of vital signs in challenging scenarios where other sensors fail. These sensors provide valuable information for space utilization optimization and can be used to improve human-building interactive systems.
SCIENTIFIC REPORTS
(2023)
Article
Construction & Building Technology
Mouatassim Charai, Ahmed Mezrhab, Ligia Moga
Summary: This paper investigates the effectiveness of using biosourced earth in building envelopes, and conducts experiments on the mechanical properties, hygrothermal performance, and moisture buffering capacity of the materials. The results show that biosourced earth blocks exhibit good hygrothermal properties and moisture buffering capacity, making them excellent humidity regulators. Additionally, using a double hollow brick wall integrating biosourced earth improves thermal comfort and reduces dissatisfied occupants compared to typical walls.
BUILDING AND ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Wenxin Li, Kwok Wei Shah, Yanru Li
Summary: This study investigated the thermal and visual environments of climate chambers installed with dark gray electrochromic glass windows under tropical climate in Singapore. The results showed that electrochromic windows can efficiently reduce heat flux and provide a cooler and more comfortable thermal environment. Bleached electrochromic windows also offer a comfortable visual environment without glare.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Construction & Building Technology
Shouib Nouh Ma'bdeh, Odi Fawwaz Alrebei, Laith M. M. Obeidat, Tamer Al-Radaideh, Katerina Kaouri, Abdulkarem I. I. Amhamed
Summary: Previous studies have shown that window-windcatchers effectively capture and redirect wind into a building, increasing ventilation ratio by 9%. However, the impact of this system on energy performance, costs, and thermal comfort has not been studied. In this research, the implementation of a window-windcatcher on a residential building was investigated using a validated DesignBuilder model. Results showed a 23.3% reduction in annual energy consumption and cost, as well as a decrease of 290 thermal discomfort hours per year.
Article
Construction & Building Technology
Xi Luo, Yongkai Sun, Xiaojun Liu, Yaru Gao, Haili Sun, Yanfeng Liu
Summary: This study aimed to optimize the course timetable by considering both building energy efficiency and students' time-varying thermal perception in order to achieve carbon neutrality in university buildings. The results showed that the optimization could achieve 16.9% energy savings, and more courses should be arranged in the first class during the afternoon when considering time-varying thermal perceptions.
BUILDING AND ENVIRONMENT
(2022)
Article
Thermodynamics
Anna Staszczuk, Tadeusz Kuczynski
Summary: This study compares the effects of PCM and reinforced concrete on the summer thermal performance of existing buildings, finding that reinforced concrete improves thermal performance significantly, while PCM may solidify during heat waves. It may not be possible to plan an optimum range of PCM melting temperatures effective throughout all summer months in a building without air conditioning.
Article
Energy & Fuels
Sana Sayadi, Abolfazl Hayati, Mazyar Salmanzadeh
Summary: This study explores optimal Window-to-Wall ratios (WWR) in seven different climates based on Koppen-Geiger classification, aiming to minimize total energy use of buildings. Factors such as overhangs, automatic blinds, and different window types were investigated for their influence on WWR optimization. Simulations were conducted using IDA-Indoor Climate and Energy software, with specific combinations of windows, blinds, and overhangs identified for each climate condition to achieve optimal results.
Article
Energy & Fuels
Micheal A. William, Maria Jose Suarez-Lopez, Silvia Soutullo, Ahmed A. Hanafy
Summary: The global environmentally friendly trend emphasizes energy conservation and reducing carbon footprint in buildings, but developing countries lack sufficient building techniques to achieve zero energy buildings. Policies mandating energy-efficient buildings for new developments and renovations should be implemented, with improved indoor environmental conditions being an important factor.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Haiqiang Liu, Xidong Ma, Zhihao Zhang, Xiaoling Cheng, Yanmi Chen, Shoichi Kojima
Summary: This study investigates the impact of classroom physical environment on student learning performance and health, establishing a relationship between thermal comfort and learning efficiency through experiments and questionnaires. Suggestions for optimizing university classroom environments were proposed based on the findings.
Article
Environmental Sciences
Xidong Ma, Zhihao Zhang, Xiaojiao Li, Yan Li
Summary: This study investigates the relationship between outdoor school violence distribution and outdoor campus environment by surveying a boarding school in southern Zhejiang Province, China using a questionnaire and Spatial Syntax theory. The statistical analysis results show a correlation between the distribution of outdoor school violence and the spatial configuration and visibility of the campus environment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Engineering, Chemical
Junting Gao, Xidong Ma, Tiefeng Xu, Yan Gu, Xiufang Chen, Wenxing Chen, Wangyang Lu
Summary: This study developed new functional pigments by combining commercial inorganic pigments with a novel g-C3N4 photocatalyst through a simple one-step calcination method. These functional pigments exhibited high photocatalytic activity under simulated sunlight and weak white-LED irradiation, and they were successfully applied to multicolored photocatalytic fibers with multiple functions including degradation of organic pollutants and antibacterial properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Construction & Building Technology
Xidong Ma, Haiqiang Liu, Zhihao Zhang, Yan Li
Summary: This study investigated the impact of classroom indoor physical environment (CIPE) on learning performance (LP) in different classroom types. The results showed that low carbon dioxide concentration (CCD) had a positive effect on all learning abilities, while relative humidity (RH) had a negative effect on comprehension memory ability (CMA) and logic deduction ability (LDA). Deeper abilities were more susceptible to air temperature (Ta) and RH. LP in compact classrooms was more vulnerable to CIPE parameters. The findings provide guidance for optimizing CIPE and LP in classroom design.
BUILDING AND ENVIRONMENT
(2023)
