Abstract
Experimental engine performance has been measured for nine species of regenerators. Three stacked wire gauzes with different mesh numbers combined with three regenerator containers with different lengths were used. The effects of the wire mesh number and the length of the regenerator on the engine performance were investigated. In addition to the ordinary performance such as indicated power, coolant heat loss at the cooler and time-averaged temperature of working gas, the flow frictton and reheat losses at the regenerator were determined from the instantaneous preessure and the coolant heat loss, respectively. These two losses were compared with the theoretical ones calculated from simple isothermal models and fundamental matrix data. Furthermore, in order to determine the optimum wire mesh numbr and geometry of the regenerator, theoretical indicated thermal efficiency has been presented and compared with engine data.
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