Coeficiente de operacion (COP) del ciclo de carnot de bomba de calor endorreversible

A mathematical model for the Operant Coefficient of an endoreversible Carnot cycle performing as a heat pump was developed using the minimal entropy generation criterion. This cycle is internally reversible and externally irreversible. The external irreversibilities are associated with both the heat transfer processes due to temperature difference between the source of heat and the fluid at low temperature, and the temperature difference between the fluid at high temperature and the sink at high temperature. Likewise, not only the finite time in which the heat transfer processes take place, but also the thermal conductance of the evaporator and condenser, is another source of irreversibilities. The effect of those irreversibilities appears in the new model, which is also proposed as a new comparison parameter for the actual heat pumps instead of the classical Carnot model, as it generates closer values to the actual heat pumps. Besides its contribution to endoreversible thermodinamics, this model may be regarded as a generalization, since results from its application under reversible assumptions resemble those of the classical Carnot model.