Inderscience Publishers

Realistic limitations to the operation of heat-driven refrigerators

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The optimal characteristic curve relating the COP and the refrigeration rate of an irreversible heat-driven refrigerator is established on the basis of a thermodynamic model which combines the endoreversible model and the heat leak insulation model. It is found that the curve is loop-shaped and that both the refrigeration rate and the COP exhibit a maximum. In addition, it is shown that the curve can be investigated so as to offer important theoretical guidance to the identification of optimal designs.

Keywords: heat-driven refrigerators, irreversibility, refrigeration effect, coefficient of performance, COP, exergy

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