SISTEM PENDINGINAN ABSORPSI SURYA PADAT DAN TERPADU

Abstract

The optimum performance of a new compact and integrated solar absorption cooling system has been determined. Conventional solar absorption cooling system consist the collector, generator, condenser, absorber and evaporator. A new compact solar absorption cooling unit with the collector, generator and condenser integrated into one single unit has been designed, fabricated and tested. The experimental setup was tested under a solar simulator. The simulator has 45 halogen lamps and the highest solar radiation value achieved was 590 W/m². The data logger was used to measure the absorber, condenser, evaporator and generator temperature. The Coefficient of Performance (COP) of 0.32 was obtained at a flow rate 0.0107 kg/s at a solar radiation value of 590 W/m² and ambient temperature of 31.5^oC. The concentration of the solution lithium bromide-water (LiBr-H₂O) was 30% and the lowest temperature of the evaporator is 22.1⁰C. The COP of a conventional non compact system integrated solar cooling absorption was in the range of 0.09-0.45. The evaporator temperature was not as low as expected since the evaporator was undersized and the evaporator room was not evacuated.