Abstract
AbstractThe main objective of this research was to study a hybrid energy thermal water pump (HBWP) in order to produce hot water from a shallow well in Thailand. The pump was powered by air-steam which was produced from a flat-plate solar collector (SC) coupled with a supplementary heat source. The HBWP system with 9 L capacity comprised an SC, an overhead tank (OT), a storage tank (ST), a heat source tank (HST), a liquid piston tank (LT), and a one-way valve. A one-meter discharge head and 1–3 m suction heads were tested. The LT was initially filled with 10% air and 90% water. The pump could run automatically. It was found that for suction heads of 1 and 3 m, the total pump efficiency was around 0.012–0.027%, and the thermal efficiency was around 32.5–36.3%. The pump could suck around 7–8 L/cycle. The average temperature of pumped water was around 42.9–46.7°C, which is sufficiently high for residential use. It was concluded that the suction heads affected the pump efficiency. Increasing air amount in the...
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