A GENERALIZED-MODEL OF A REAL REFRIGERATOR AND ITS PERFORMANCE

In a classical endoreversible Carnot refrigeration model, irreversibil ity in the form of heat resistances between the reversible Carnot cycl e and its heat reservoirs is taken into account. This paper presents a new steady-state flow model that incorporates several internal irreve rsibilities, such as heat leak, friction, turbulance, etc. These added irreversibilities are characterized by a constant parameter and a con stant coefficient. An optimization analysis of the model has been carr ied out that allows assessments of the effects of the various irrevers ibilities on the performance of the cycle. Numerical examples are give n to illustrate the practicality of the model.