Apart from double acting type engines, Stirling engines have either 2 pistons in 2 cylinders or 2 pistons in a single cylinder. Typically, the heater, regenerator and cooler are installed between the 2 pistons. The pulse tube engine, on the other hand, consists of a single piston in a single cylinder, a pulse tube, a heater, a regenerator, a cooler and a second cooler. For this paper, a simple prototype engine that uses air at normal atmospheric pressure as the working gas was fabricated. The oscillating velocity of the working gas in the pulse tube was measured using LDV, and the work flow emitting out of the pulse tube was observed. In addition, the effect of inserting heat storage material in the pulse tube on shaft power and indicated power was examined experimentally. A dramatic increase in the shaft power was achieved.
Stri1ing engines have t血e composition of 2 pistons in 2 cylinders or 2 pistons in l cylinder except fbr a double acting type engine . Heater , fegenerator and cooler are insIalled betWeen 2 plstons . The pulse tube engine consists of l piston 正 n l cyl 量 nder , pulse tube , heateiregenerato ら cqoler and 2nd cooleL In血 is papeら in order to investigate 出 e basic characterist 玉 cs ofthe pulse tube gine, an ep . gine of simple eompositio4 which used atmospher 孟 c pressure air as the working gas, has been manufactured . Gas parcels are observed to flow out of the heater in pulse tube using LDV . Th ¢ measurements of the worldng gas behavior in 丗[ ermoacoustic oscillation in pulse tUbe are inv巳stigated , Based on the resul ち e { fectS of heat storage rnaterial in pulse tUbe on shaft power and indlcateCl power are examined experimenta 】 1y As one of 血 e performance improvemeng the excellcnt effect of regenerator in pulse tube has . been confirmcd . Key"・ordS : energy cenversion , thermoacoustics , standing wave , heat engine , shafi pQwer
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