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Performance of cylinder head and piston head suction valve configurations in small variable-speed reciprocating compressors.

Number: 1330

Author(s) : SILVA W. T. F. D., SILVA I., DESCHAMPS C. J., LOHN S. K.

Summary

The suction valve is typically mounted on the cylinder head of small reciprocating compressors. However, with the current trend of compressor miniaturization, positioning the suction valve on the piston head (VOPH) is an alternative to increase the valve passage area. This article presents a study comparing the performance of suction valves placed on the cylinder head versus those on the piston head across different compressor speeds. A validated numerical model was used to simulate the compressor for both configurations under different operating conditions. The results indicate that the dynamics of the suction valve are very sensitive to changes in compressor speed, significantly affecting performance. Furthermore, we found that valves of identical passage area and dynamic properties exhibit inferior performance when mounted on the piston head compared to the cylinder head (VOCH). Despite significantly reducing the compressor’s volumetric efficiency, the suction gas superheating associated with the VOPH was not influenced by the compressor speed. The findings of this study provide insights for the design and optimization of variable-speed compressors, focusing on efficiency and reliability.

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  • Original title: Performance of cylinder head and piston head suction valve configurations in small variable-speed reciprocating compressors.
  • Record ID : 30033601
  • Languages: English
  • Subject: General information
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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