@article{MAKHILLJEAS202015118907, title = {Experimental Study on Heat Gain Reduction and Economic Evaluation of Mixed Asphalt Solar Water Heater (MASWH)}, journal = {Journal of Engineering and Applied Sciences}, volume = {15}, number = {1}, pages = {327-334}, year = {2020}, issn = {1816-949x}, doi = {jeasci.2020.327.334}, url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2020.327.334}, author = {Tinnapob,Jirasak and}, keywords = {Mixed asphalt,solar water heater,heat gain reduction,thermo-economic,temperature,length}, 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.} }