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Process and a device for increasing the efficiency of compression devices

  • US 5,316,448 A
  • Filed: 10/19/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 10/18/1991
  • Status: Expired due to Fees
First Claim
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1. A process for increasing the efficiency of a compressor having a suction line as an input, a pressure line as an output and a counter-pressure valve wherein the compressor compresses a fluid, the process comprising the steps of:

  • bleeding fluid from the pressure line to the suction line through a bypass valve disposed in parallel with the compressor;

    monitoring the pressure in the suction line to provide a first signal indicative of the actual pressure in the suction line; and

    comparing the first signal to a second signal indicative of a desired suction line pressure to produce a first error signal for controlling the size of the opening of the counter-pressure valve in the compressor which counter-pressure valve controls the suction pressure, and providing a second error signal which controls the size of the opening of the bypass valve, wherein fluid flow between the suction and pressure lines is adapted to the requirements of the cooling process while maintaining the suction pressure substantially constant.

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