Abstract: The heat transfer system is one of the key components of a Stirling engine. According to the designing requirements that the power generation reaches 3 kW and the efficiency is greater than 20% for the Stirling engines, it designed the supporting heat exchanger system with a heat receiver, a regenerator, and a cooler. The theoretical power generation was calculated at 4.2 kW, its efficiency reaching 28.6%. In addition, it conducted an experiment of the cooler. Experimental results show that the efficiency of the cooler heat exchanger is up to 93.6%, thus meeting the designing requirements.

Key words: Stirling engine； heat transfer system；β type