HEAT TRANSFER MODELING AND SIMULATION OF RECIPROCATING COMPRESSORS - A REVIEW

摘要

Modeling cylinder heat transfer process coupled with the kinematic, fluid flow and valve dynamic processes is essential for determining the actual performance of any compressor. Heat transfer occurs primarily due to conduction and convection in compressors. Control volume for heat transfer study is the space between the cylinder head and piston. Heat transfer between the gas and cylinder, cylinder wall and surrounding and the gas and valves are calculated using various heat transfer correlations for conduction and convection. Proper heat transfer modeling is useful for determining the cylinder pressure and temperature which in turn useful in calculating the indicated work done and other parameters like actual torque. Analytical formulations of heat transfer processes are challenging while trying to create an entire compressor performance modeling. To obtain the performance parameters of the compressors, all the processes are coded with algebraic equations for their simplicity and over all mathematical models is obtained. Performance of a compressor can be understood from the Pressure Volume diagram which can be mathematically produced by considering all the individual effects. An effective heat transfer model needs to be incorporated with the overall mathematical model of a reciprocating compressor. This paper reviews the open literature available for the development of heat transfer model for reciprocating compressor.