Authors : Jirasak Pukdum, Krichkanok Sudasna and Tinnapob Phengpom
Abstract: This study studied the Mixed Asphalt Solar Water Heater (MASWH) integrated on the roof top. This solution can reduce ceiling heat gain into the room. Both reference house and house-integrated with MASWH have dimension 1 m width, 1 m length and 1 m height. The MASWH has a thickness of 0.05 m, width of 0.5 m and a length of 1 m. One house equipped with MASWH on the roof top to test in experiments while the other house was served as reference. The roof was inclined at 30° to the horizontal. The experimental result showed that the attic temperature and room temperature. The house-integrated with MASWH could reduce attic temperature of 3°C and room temperature of 4°C, respectively. The percentage of room temperature decreased in the range of 7-10%. Heat gain reduction of the house-integrated with MASWH become better than reference house about 5-12 Wm–2 and the maximum of outlet water temperature was 52.8°C. Obviously, installing MASWH on the roof top can reduce heat transfer. The economic value was evaluation as the payback period and the result showed that 2.5 years.
Jirasak Pukdum, Krichkanok Sudasna and Tinnapob Phengpom, 2020. Experimental Study on Heat Gain Reduction and Economic Evaluation of Mixed Asphalt Solar Water Heater (MASWH). Journal of Engineering and Applied Sciences, 15: 327-334.