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This paper presents the experimental investigation to determine the condensation and evaporation heat transfer coefficients and pressure drops for the flow of R22 through internally grooved copper tubes namely B16-46 and D12-52. A series of experiments were conducted to evaluate the condensation and evaporation performances of the internally grooved copper tubes. Condensation tests were conducted...
An experimental ejector refrigerant system is designed and constructed to study the performance of HFC134a as working fluid in this paper. The influence of evaporator, generator, and condenser temperatures on the system performance is studied. The experimental results demonstrate that the entrainment ratio, cooling capacity, and COP of the system increase with increasing of the evaporator temperature,...
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