Abstract
Energy saving in Air Conditioning (AC) system is quite important for climate-change mitigation, since AC system consumes around 60% of building electricity. Air conditioning technology also deals with ozone depletion problem. Chilled-water AC system needs smaller amount of primary refrigerant, so it can minimize possible CFC or HCFC (Ozone Depleting Substances) emission into the atmosphere. Latent heat transportation system applied in chilledwater system open opportunity to save energy. In the second aspect, integration of Phase Change Material (PCM) in building wall can increase heat capacity of the wall and reduce and stabilize indoor temperature. Both technologies can mutually contribute in reducing AC energy consumption. In this paper, application of some PCMs in chilled water system and wall model are reported.
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