Abstract
We have studied a new conceptive Stirling refrigerator. It is a pulse tube type Stirling refrigerator that has a bigger extra space, called 'pulse tube', between the low temperature heat exchanger and the expansion space. The advantage of the pulse tube type Stirling refrigerator is that the mean gas temperature in the expansion space can be kept around room temperature by the function of pulse tube. We attempt to make clear the working characteristics of the pulse tube type Stirling refrigerator by employing the numerical cycle simulation based on a nodal analysis. The results prove that the pulse tube type Stirling refrigerator can work as the mean gas temperature in the expansion space is kept at room temperature.
