A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation of a novel diatomite-based PCM gypsum board for temperature-humidity control of buildings
Abstract Building envelopes with excellent performance in thermal storage and humidity control are effective in reducing the heat and humidity load burdens of the electrical facilities, thus achieving energy conservation. However, thermal and hygroscopic properties have typically been examined separately in most studies. This study aims to develop a novel composite gypsum board by integrating modified diatomite and a binary phase-change material (PCM) to simultaneously control the temperature and humidity of buildings. Raw diatomite was first modified by acid and salt treatments and then used to prepare a diatomite-based shape-stabilised composite PCM (D/PCM), which was applied to fabricate the proposed functional gypsum board. The physicochemical and hygrothermal properties of the proposed D/PCM gypsum board were studied experimentally. The results show that the D/PCM gypsum board demonstrates satisfactory performance in terms of heat storage and temperature delay, mitigating temperature fluctuations indoors. Moreover, the moisture adsorption capability was significantly improved compared with that of the normal gypsum board. The proposed D/PCM gypsum board is a promising composite building material that can be widely applied to promote energy conservation in buildings.
Highlights A D/PCM gypsum board was proposed by integrating gypsum, modified diatomite and PCM. Diatomite modification was used to improve absorption ability of PCM and moisture. D/PCM gypsum board has excellent ability in mitigating the temperature fluctuation. Hygroscopicity of D/PCM gypsum board was significantly improved at high humidity.
Preparation of a novel diatomite-based PCM gypsum board for temperature-humidity control of buildings
Abstract Building envelopes with excellent performance in thermal storage and humidity control are effective in reducing the heat and humidity load burdens of the electrical facilities, thus achieving energy conservation. However, thermal and hygroscopic properties have typically been examined separately in most studies. This study aims to develop a novel composite gypsum board by integrating modified diatomite and a binary phase-change material (PCM) to simultaneously control the temperature and humidity of buildings. Raw diatomite was first modified by acid and salt treatments and then used to prepare a diatomite-based shape-stabilised composite PCM (D/PCM), which was applied to fabricate the proposed functional gypsum board. The physicochemical and hygrothermal properties of the proposed D/PCM gypsum board were studied experimentally. The results show that the D/PCM gypsum board demonstrates satisfactory performance in terms of heat storage and temperature delay, mitigating temperature fluctuations indoors. Moreover, the moisture adsorption capability was significantly improved compared with that of the normal gypsum board. The proposed D/PCM gypsum board is a promising composite building material that can be widely applied to promote energy conservation in buildings.
Highlights A D/PCM gypsum board was proposed by integrating gypsum, modified diatomite and PCM. Diatomite modification was used to improve absorption ability of PCM and moisture. D/PCM gypsum board has excellent ability in mitigating the temperature fluctuation. Hygroscopicity of D/PCM gypsum board was significantly improved at high humidity.
Preparation of a novel diatomite-based PCM gypsum board for temperature-humidity control of buildings
Yang, Yingying (author) / Shen, Zhonghua (author) / Wu, Weidong (author) / Zhang, Hua (author) / Ren, Yan (author) / Yang, Qiguo (author)
Building and Environment ; 226
2022-10-20
Article (Journal)
Electronic Resource
English
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