| Popis: |
The present study represents theoretical and applied experimental test to advise new configuration of split air conditioning unit with compressor energy saving. The conventional cycle that consists of evaporator, compressor, condenser and expansion valve was set as the base cycle. Three cases will be investigated theoretically; conventional, conventional with partial compression in the compressor with compression completion via evacuated tube and conventional with partial compression in the compressor with compression completion via evacuated tube in the presence of heat exchanger. Five refrigerants are tested theoretically, R- 134a, R-152a, R-290, R-600a and R-1234yf; however the experimental test rig is tested with only R- 134a which is available. The results include cooling capacity, compressor power, condenser heat load and the cycle coefficient of performance (COP). Good performance of the new proposed system with partial compression in the compressor with compression completion via the evacuated tube in the presence of heat exchanger has been found. The results showed that the utilization of evacuated tube with heat exchanger leads to maximum enhancement in system COP by 20.3% in case of using R-290 as a result of consumed power reduction in the compressor by 8.22% and increasing in the cooling capacity by 10.1%. |
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