WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 14, 2019
Investigation the performance of Window-Type Air-Conditioning Units with Different Expansion Devices
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Abstract: In this study, the performance of window-type air-conditioning units with an alternative, ozonefriendly refrigerant was enhanced by incorporating a nozzle instead of a capillary tube as an expansion device. An experimental investigation was carried out on 1.5 RT window-type air-conditioning units with controlled environmental zones. According to operating conditions, an ANSYS-fluent program achieved a suitable nozzle geometry for a lower pressure ratio. The refrigeration cycle model was programmed in Engineering Equation Solver (EES). The experiment showed that using a nozzle of (9mm ID X 2 mm OD X 30 mm L) as an expansion device i n a n air-conditioning system will decrease the required compressor work by 7.7% from the system with a capillary tube and result in a 21% COP increase from the capillary tube system.
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Pages: 56-65
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 14, 2019, Art. #7