Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Annual Thermal Evaluation of Lightweight Building Envelopes Containing Phase Change Materials in Changsha
Integrating phase change materials (PCMs) into building envelopes is a promising way to reduce building energy consumption and to improve indoor thermal comfort. This paper analyzed the thermal performance of building envelopes containing PCMs under full weather condition in a hot summer and cold winter region. Two identical houses located in Changsha were built, experimented, and simulated. In the absence of HVAC in summer, installing XPS-PCM next to the wall interior surface reduced the average indoor air temperature by 1.1 °C during office hours. Moreover, the peak load was delayed by 1 h and shifted out of the office hours. The energy use intensity (EUI) in summer and whole year was reduced by 21.9% (29.7 kWh/m2) and 8.6% (22.0 kWh/m2), compared to a wall without PCMs, respectively. In winter, the XPS-PCM position has less impact on the indoor thermal comfort. It is recommended to install the XPS-PCM board next to the wall interior surface with a night ventilation of 20 ACH.
Annual Thermal Evaluation of Lightweight Building Envelopes Containing Phase Change Materials in Changsha
Integrating phase change materials (PCMs) into building envelopes is a promising way to reduce building energy consumption and to improve indoor thermal comfort. This paper analyzed the thermal performance of building envelopes containing PCMs under full weather condition in a hot summer and cold winter region. Two identical houses located in Changsha were built, experimented, and simulated. In the absence of HVAC in summer, installing XPS-PCM next to the wall interior surface reduced the average indoor air temperature by 1.1 °C during office hours. Moreover, the peak load was delayed by 1 h and shifted out of the office hours. The energy use intensity (EUI) in summer and whole year was reduced by 21.9% (29.7 kWh/m2) and 8.6% (22.0 kWh/m2), compared to a wall without PCMs, respectively. In winter, the XPS-PCM position has less impact on the indoor thermal comfort. It is recommended to install the XPS-PCM board next to the wall interior surface with a night ventilation of 20 ACH.
Annual Thermal Evaluation of Lightweight Building Envelopes Containing Phase Change Materials in Changsha
Environ Sci Eng
Wang, Zhaojun (Herausgeber:in) / Zhu, Yingxin (Herausgeber:in) / Wang, Fang (Herausgeber:in) / Wang, Peng (Herausgeber:in) / Shen, Chao (Herausgeber:in) / Liu, Jing (Herausgeber:in) / Sun, Xiaoqin (Autor:in) / Fan, Siyuan (Autor:in) / Chu, Youhong (Autor:in) / Mo, Yajing (Autor:in)
The International Symposium on Heating, Ventilation and Air Conditioning ; 2019 ; Harbin, China
20.03.2020
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Building performance , Phase change material , Heat flux , Energy use intensity Engineering , Building Physics, HVAC , Sustainable Architecture/Green Buildings , Atmospheric Protection/Air Quality Control/Air Pollution , Renewable and Green Energy , Energy Storage , Monitoring/Environmental Analysis , Earth and Environmental Science
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