Abstract
Apart from the double acting type engine, Stirling engines have either 2 pistons in 2 cylinders or 2 pistons in a single cylinder, with the heater, regenerator and cooler installed between the pistons. The single piston type Stirling engine, on the other hand, consists of a single piston in a single cylinder, a cooler, a regenerator, a heater and a gas damper. The gas damper has a role equivalent to the expansion piston. For this paper, a simple prototype engine, using air at normal atmospheric pressure as the working gas, was fabricated. In addition, as one of the performance improvements, the engine with a bypass tube, using a capillary tube inserted between the gas damper and cooler, was set up. The effect of the bypass on shaft power and P-V diagram was examined experimentally. As a result, a dramatic increase in the shaft power was achieved.
