Heat transfer and thermal storage behaviour of gypsum boards incorporating micro-encapsulated PCM

• Published in: Energy and buildings Vol. 42; no. 8; pp. 1259 - 1266
• Main Authors: Lai, Chi-ming, Chen, R.H., Lin, Ching-Yao
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.08.2010; Elsevier
• Subjects: Antimony; Applied sciences; Buildings. Public works; Energy; Exact sciences and technology; Fourier analysis; Gypsum board; Heat transfer; Lime. Gypsum plaster. Plaster elements; Materials; Melting; Phase change material; Physical properties; Solar heat gain; Thermal storage; Walls; Energy; Phase change material; Solar heat gain; Gypsum plate; Solar energy; Heat gain; Thermal energy storage; Product development; PCM material; Experimental study; Heat transfer
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2010.02.018

In the application of energy storage and thermal environmental control, PCM (Phase Change Material) is a very promising material choice. This study incorporated mPCM (micro-encapsulated PCM) into gypsum to make mPCM gypsum board and then investigated the physical properties, heat transfer and thermal storage behaviour. The major control parameters are wall temperatures and the weight percentages of mPCM added to the gypsum boards. A melting fraction correlation, reduced from our test data and based on Stefan number ( Ste), subcooling ( Sb) and Fourier number, is proposed. It shows that case with a higher Ste or Sb can have a higher heat transfer through the hot wall. Thermal storage behaviour of mPCM gypsum boards is then analyzed.