Abstract
In this study, we compared performance for a multistage Stirling engine and a steam engine for a wast heat recovery system. The multistage Stirling cycle and the simple Rankine cycle were analyzed at ideal cycles. It was shown that Stirling engine was able to improve the waste heat recovery efficienciy to make it to the multistage by two steps or more. We discussed waste heat application using the diesel engine of 750kW. It was shown to obtain the waste heat recovery efficienciy of about 7% at the multistage Stirling engine and the steam engine. When all of the wast heat were not able to be collected because the installation space was small, it was clarified that the Stirling engine was higher efficiency compared with the Rankine cycle.
