An Integrated Approach to Reciprocating Compressor Design
نویسندگان
چکیده
A typical reciprocating co~pressor consists of a motor, a pump, suction discharge system and a lubrication system. An integrated computer simulation model incorporating all these components simultaneously was developed to predict, evaluate and optimize the overall performance and reliability. For the given design variants of a compressor, the computer program first calculates the mass flow rate, indicated work, gas loads, thermodynamic parameters using pump and suction discharge models. Next, the program evaluates the bearing performance and calculates also the total frictional and lubrication loads on the shaft. Using the indicated work, frictional loads, the program analyses the motor performance and calculates heat generation. Then the program invokes the overall heat balance model of the compressor to calculate winding temperature, gas temperature in the shell and the suction gas entry temperature. The whole process is performed iteratively until converged results are obtained. A low back pressure compressor was redesigned us1ng this 1ntegrated computer model approach to enhance the performance and to improve the reliability. Actual prototype compressors as per this design were built and tested. The test results showed considerable improvements in performance and reliability,
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