Evaluation of the Gamma Stirling Engine Heat Transfers in its Heat Exchangers

In this paper, a Gamma type Stirling engine is experimented. A special care was given to the heat exchangers instrumentation. Different set of experimental measurement were made on them. Their corresponding thermal energy and efficiencies are estimated. Three operation parameters are chosen: filling pressure, cooling water flow rate and heating temperature. The influence of these parameters on the performance of each heat exchanger are presented and explained. It can be concluded that all heat exchangers parameters are critical to the performance of the Stirling engine. The regenerator performances are the most significant for the engine. The heating temperature is the parameter that greatly affects performance of heat exchangers. The cooling water flow rate is quite affecting the Cooler efficiency but has a slight influence on other exchangers. The initial filling pressure is significant for the regenerator and for the heater.