2008 年 43 巻 6 号 p. 964-970
We present here the numerical simulation on the dynamic characteristics of a waste heat recovery Stirling engine. This Stirling engine employs the high temperature exhaust energy of a marine Diesel engine as a heat source. The engine has an electric generator in the crank space. That is to say of the hermetic type, and the electric output from the generator serves as a continuous battery charger. The charged electricity in the batteries will be used as a power source for working machines in a harbor and thus contribute to a reduction of harmful exhaust gases in the harbor area. During a voyage the engine deals with various changes in running conditions, such as heat input and load conditions. So, it is very important to understand the engine dynamic behavior, even in unexpected conditional changes, such as a sudden loss of load from the engine. In this paper we demonstrate how to build up a simulation, and some dynamic simulation results are presented. Finally, we discuss one of the results when compared with an experimental result.