文档介绍：A review on energy conservation in building applications with thermal storage by latent heat using phase change materials
Amar M. Khudhair, Mohammed M. Farid , 
Department of Chemical and Materials Engineering, School of Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand
Received 12 December 2002; Accepted 24 May 2003. Available online 22 July 2003.
Abstract
Energy storage in the walls, ceiling and floor of buildings may be enhanced by encapsulating suitable phase change materials (PCMs) within these surfaces to capture solar energy directly and increase fort by decreasing the frequency of internal air temperature swings and maintaining the temperature closer to the desired temperature for a longer period of time. This paper summarizes the investigation and analysis of thermal energy storage systems incorporating PCMs for use in building applications. Researches on thermal storage in which the PCM is encapsulated in concrete, gypsum wallboard, ceiling and floor have been ongoing for some time and are discussed. The problems associated with the application of PCMs with regard to the selection of materials and the methods used to contain them are also discussed.
Keywords: PCM; Latent heat; Encapsulation; Wallboards; Concrete; Under floor heating
Article Outline
1. Introduction
2. PCM developments
3. Phase change thermal storage for peak load shifting
4. Phase change material encapsulation in structures
. Wallboards impregnated with PCMs
. Concrete blocks impregnating with PCMs
. Underfloor heating with latent heat storage
5. Micro- and macroencapsulation methods
6. Fire retardation of PCM-treated construction materials
7. Conclusions
References
1. Introduction
Electrical energy consumption varies significantly during the day and night according to the demand by industrial, commercial and residential activities, especially in extremely hot and cold climate countries where the major part of the variation is due