Abstract
Stirling engines have the composition of 2 pistons in 2 cylinders or 2 pistons in 1 cylinder except for a double acting type engine. Heater, regenerator and cooler are installed between 2 pistons. The pulse tube engine consists of 1 piston in 1 cylinder, cooler, pulse tube, regenerator, heater, and gas damper. The pulse tube engine can be driven by the heat source with the low temperature. For the recovery of the low temperature heat, the flat shape is good in the external heating section. In this paper, in order to investigate the effects of pulse tube shape on pulse tube engine performance, a cylindrical type pulse engine and a flat type pulse tube engine of simple composition, which used atmospheric pressure air as the working gas, has been manufactured. Effects of pulse tube shape on pulse tube engine performance on shaft power and indicated power are examined experimentally. The effect of flat shape pulse tube has been confirmed.
