Impact Analysis of Unhelpful Volume Radio for A γ-type Stirling Engine

The stirling engine is a closed cycle by external heat,it has many advantages,such as high efficiency,wide heat source and low noise.The stirling engine can be divided into three types by different structure,α-type,β-type,γ-tpye.The mathematic model of the γ-tpye stirling engine is built and we analysis the parameters,such as the unhelpful volume ratio of heater,the unhelpful volume ratio of cooler,influencing output power,relative Carnot cycle efficiency.