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Pressure-volume diagrams of scroll compressors at various operating points.

Number: pap. 1299

Author(s) : PICAVET A., GINIES P.

Summary

This paper presents the results of scroll compressor tests conducted in order to establish pressure-volume diagrams. Two compressors were thinly instrumented with pressure and displacement sensors so as to follow the whole compression process, from suction to exhaust. A gear coder was set to record the opening of gas pockets, and to study the speed variations occurring during a single rotation. These tests help understanding the various phenomena encountered in a compressor, such as back-flow, overshoot, leakages, at the different operating points. Comparing an ideal pressure-volume diagram to the experimental one enables identification of improvement possibilities. One of the compressors was equipped with Intermediate Discharge Valves (IDVs) that could be deactivated. Comparative tests for points at low pressure ratio showed precisely the influence of these devices on the distribution of pressure inside the machine.

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Pages: 10 p.

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Details

  • Original title: Pressure-volume diagrams of scroll compressors at various operating points.
  • Record ID : 30012820
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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