Abstract
Window glazing is a weak element in building construction from the aspect of thermal insulation. To save building energy by using advanced glazing system is efficient and important. A novel design of water-filled double reflective glazing system is here introduced and the prediction of its annual performance through computer simulation with the use of Hong Kong TMY weather data is presented. The monthly indoor heat gains through the window are compared with conventional single/double reflective glazing. The results show that the indoor room heat gain can be largely reduced by utilizing this novel glazing system. Besides, the absorbed heat by water flow in cavity can be used as a pre-heated water source to serve the hot water system. So there is a great energy-saving potential in its application in large buildings.
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