Abstract
In low temperature differential Stirling engine, the channel shape heat exchanger is better than conventional flat shape heat exchanger as numerical analysis. The method a beginner can adopt the CFD is introduced The first priority of the CFD was to obtain the data for drastic improvement of low temperature differential Stirling engine. It is important that many times of try and error are carried out by many people than the accuracy of analysis. The use of KNOPPIX Edu7 enables to avoid the problem of the licenses. In the calculation, the flow of working fluid in displacer chamber is two dimensional steady state incompressible turbulent flow. In the case of the conventional flat shape heat exchanger, the velocity of working fluid on the surface of heat exchanger is low. The heat exchange in the path between displacer and the wall of the proposed heat exchanger improves the average temperature in the expansion side of displacer chamber.
