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Analytical study on the performance characteristics of a liquid injection refrigeration cycle.

Number: pap. 2443

Author(s) : JEON Y., LEE S. H., JUNG J. H., et al.

Summary

A residential heat pump is faced with reliability problems due to a higher compressor discharge temperature and lower performance at lower ambient temperatures. Many researchers have been trying to overcome this problem by applying vapor injection techniques. However, the application of the vapor injection cycle caused higher cost due to the increased components such as internal heat exchanger or flash tank. Liquid injection technique has merits of cost and cycle reliability because the refrigerant discharged from the condenser is expanded and injected directly into the compressor. In this study, a simulation program for a liquid injection heat pump cycle was developed. The cycle performance was simulated using mass and energy balances. The model was validated by comparing the predictions with measured data at various operating conditions. Based on the simulation results, cycle performance characteristics were discussed at various operating and compressor design conditions.

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Pages: 6 p.

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Details

  • Original title: Analytical study on the performance characteristics of a liquid injection refrigeration cycle.
  • Record ID : 30013054
  • Languages: English
  • Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2014/07/14

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