Investigation of effect of heat exchanger size on power output in low-temperature difference Stirling engines

The Stirling engine is capable of converting any source thermal energy into kinetic energy, which makes it an attractive option for utilizing low-temperature sources such as geothermal or waste heat below 100 °C. However, at these low temperatures, the effects losses are proportionally higher due to lower potential available. One significant loss excess dead volume, wherein a contributor exchangers. exchangers must be selected optimize power output by minimizing volume while maximizing transfer and from engine. To better understand what optimal geometry exchanger components is, modelled using third-order commercial modelling software (Sage) trends properties power, temperature, pressure different geometries observed. results indicate that there optimum temperature engines. This also affected other properties, regenerator size speed. These provide insight engines, well providing design guidance future engines built.