Performance of the Two-Phase Ejector Expansion Refrigeration Cycle

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Performance of the Two-Phase Ejector Expansion Refrigeration Cycle

[EXTERNAL] 2005, Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Laboratory (FUTURE), Department of Mechanical Engineering, King Mongkut s University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand.

Courtesy of Somchai Wongwises & Somjin Disawas 

An ejector, or jet pump, is a device that uses a high pressure fluid to pump a low-pressure fluid to a higher pressure at a diffuser outlet. Due to their low cost and absent of moving parts, ejectors have been used in various engineering applications. A well-known application is the use of the ejector in refrigeration systems as a compressor to compress the refrigerant vapor from the evaporator to the condenser. This type of application is explained in [1]. However, in addition to serving as a compressor, Kornhauser [2] proposed the use of the ejector as an expansion device to expand the high-pressure refrigerant from the condenser to reach evaporator pressure.

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