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A novel self-air-cooling reciprocating compressor (SACRC) is proposed, which can cool itself when it is working without adding any auxiliary equipment. The suction and discharge valve model are established considering thermodynamic and kinematics properties. The thermodynamic models of compressor and cooling system are respectively established considering their compressibility and heat exchange. The model of SACRC is finally achieved on the basis of building its energy network and it is verified by good curve-fitting between simulation and experiment at different conditions, which improves the compressor thermodynamic model theory. The results of characteristic analysis and comparative research show that the cooling system can obviously reduce the cylinder temperature and improve the volumetric efficiency, which makes it possible for compressor to realize high pressure and microminiaturization.

Thermodynamic Analysis of a Novel Self-Air-Cooling Reciprocating Compressor