THERMAL PERFORMANCE OF WATER-FILLED WINDOW IN TROPICAL CLIMATE, PENANG, MALAYSIA.

Hazril Sherney Basher

Abstract


The Earth's surface temperature continues to rise each year due to various contributing factors such as the sun’s increasing intensity, global warming, and the depletion of the ozone layer. One significant cause of ozone depletion is the release of chlorofluorocarbon (CFC) gases from air conditioners (AC) used to cool indoor spaces. The type, thickness, and structure of glass windows play a crucial role in influencing indoor temperatures, as windows not only allow sunlight to enter but also permit heat transfer from the sun. Clear glass, in particular, has limited ability to block solar heat, resulting in temperature differences between indoor and outdoor environments. This study investigates the effects of varying water cavity thicknesses in different window prototypes to assess temperature differences between indoor and outdoor spaces, the construction’s ability to block heat, and the duration of heat retention. Findings show that the water-filled window prototype lowered indoor surface temperature by an average of 0.87°C, demonstrating its potential to enhance energy efficiency through the thermal mass properties of water.


Keywords


energy efficiency, glazing, thermal performance, tropical climate, water-filled window.

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References


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