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Design of a compressor load stand capable of supplying two-phase refrigerant at two intermediate pressures.

Number: pap. 1539

Author(s) : GU R., MATHISON M. M.

Summary

The development of compressors with refrigerant injection ports provides a less complex and less costly alternative to implementing multi-stage compressors with economization. The ports can be used to inject economized refrigerant during the compression process, which provides the desired cooling effect and decreases the work required to compress the gas per unit mass. Therefore, this paper presents the design of a compressor load stand for testing compressors with multiple injection ports. The load stand is based on a traditional hot gas bypass configuration but is capable of supplying refrigerant to injection ports at two different pressures between the compressor suction and discharge pressures. In addition, the state of the injected refrigerant can be controlled such that it is either superheated vapor or a saturated liquid-vapor mixture. To guide the design of the bench and size system components, a model was developed to predict the system performance with a commercially available R-410A compressor that has a single injection port. The model is used to predict the range of injection conditions that the load stand will be able to achieve over a range of operating conditions.

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Pages: 10 p.

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Details

  • Original title: Design of a compressor load stand capable of supplying two-phase refrigerant at two intermediate pressures.
  • Record ID : 30014240
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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