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Volume no. 4 | 2024/09
Issue no. 1


Title
WASS: INTEGRATION OF A WATER-BASED HEAT SINK SYSTEM ON RESIDENTIAL ROOFING FOR EFFICIENT COOLING
Author
Dustin Eidrin H. Balbastro, Johann Marcus C. Bunyi, Ioel Judd D. Carmona, Rich Emmanuel P. Gonzales, Ms. Christine Joyce L. Enteria, LPT
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Abstract
Heat is a constant issue in the tropics, compromising living conditions and health, but this problem has worsened in recent years in the advent of climate change. Coupled with the energy crisis being experienced, a new method of cooling housing areas is pertinent. This study proposes a method to alleviate heat inside houses in an efficient manner through the WASS (water-based heat sink system) that cycles water, absorbing heat from roof surfaces and dispersing it through evaporation and conduction. Tests were conducted with a model house constructed with plywood walls and grooved metal roof to simulate domestic conditions of target demographic, with separate instances including and excluding false ceilings in the testing. The WASS prototype was constructed in conjunction with this model, with two tests. Each test was preceded by two hours of direct sunlight access until the internal temperature reached 37°C without a false ceiling and 34°C with a false ceiling, after which the WASS cooling system was activated for five minutes. Roof and water temperatures were also measured. Testing the WASS cooling without a false ceiling yielded a final internal temperature of 31°C, reducing internal heat by 6°C in total. Testing its effects with a false ceiling resulted in 32°C after measurement with less effect, reducing only 1.8°C. The water temperature also increased by 0.6°C for the former and 1.1°C for the latter, showing the water properly absorbing the heat as it cycled. The WASS cooling system effectively cooled the internal temperature of the model house, but it was concluded to be more effective in houses without a false ceiling. More comprehensive further testing is required to measure its effectiveness as a new approach for house cooling, but the results have shown its viability.
Keywords
Heat, Evaporative Cooling, Internal Temperature, False Ceiling
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