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- W2324293453 abstract "[Abstract] A heat exchanger with a suction line of copper ribbed-tube was developed and applied as an evaporator of a refrigeration circuit. The evaporator tubes have grooves on the inner surface in order to provide a more mixing flow and a large effective wetted area. Thermal and flow analyses were performed on a prototype refrigerating system with the ribbed-tube evaporator. The same analysis was performed on the refrigerating system but with a smooth-tube (non-grooved) evaporator. Temperature and pressure measurements were made for each of the two refrigerating systems. The turbulence model applied in the study is the standard k-epsilon accounting for the turbulent kinetic energy and dissipation rate. The two systems were compared in terms of heat exchanger effectiveness, overall coefficient of performance (COP), run-time ratio and pressure drop. The heat exchanger effectiveness of the ribbed-tube evaporator was found to be 7% higher compared to the smooth-tube evaporator. The COP value of the system employing the ribbed-tube evaporator was also found to be higher. Also the results obtained from the study of the runtime ratios showed that the system using the ribbed-tube evaporator will save significant energy for the same cooling effect. Although the pressure drop for the ribbed-tube evaporator was found to be slightly higher than that for the smooth-tube evaporator, the same compressor used in the two systems was able to overcome this pressure drop increase." @default.
- W2324293453 created "2016-06-24" @default.
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- W2324293453 date "2007-06-18" @default.
- W2324293453 modified "2023-09-25" @default.
- W2324293453 title "Thermal Analysis of a Grooved Refrigerating System Evaporator" @default.
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- W2324293453 doi "https://doi.org/10.2514/6.2007-4745" @default.
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