Minimum power input of irreversible stirling refrigerator for given cooling rate

摘要

An irreversible cycle model is developed for predicting the performance of a Stirling refriger- ator using an ideal or Van der Waals gas as the working substance. The basic irreversibilities included in the cycle model result from the finite rate heat in two isothermal processes, regenerative losses in two constant volume processes and heat leak losses from the heat sink to the cooled space. Two different regenerative forms are discussed, where one is that the time of the regenerative processes Is directly proportional to the temperature difference of the working substance in two isothermal pro- Cesses, and the other is that it is directly proportional to the time of two isothermal processes.