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Impacts of refrigerant charge on air conditioner and heat pump performance.

Number: pap. n. R4, 2433

Author(s) : KIM W., BRAUN J. E.

Summary

The paper provides detailed results that show the impact of charge level on cooling capacity, heating capacity, and efficiency for units tested in the laboratory and for some data obtained from a manufacturer. The impacts of improper refrigerant charge amount on capacity vary for different units and operating conditions. Low refrigerant charge levels can cause significant reductions in both cooling and heating capacity. Also, running equipment at low or high refrigerant charge levels may shorten its lifespan. To evaluate the economic value, Seasonal Energy Efficiency Ratio (SEER) and annual cost of electricity were determined for some case studies based on the tested units. The results imply that charging inaccuracies could cause significant decreases in SEER, leading to increases in the operating costs. When the refrigerant was charged to 75 percent of normal, the SEER value decreased by 16 percent and annual operating cost was increased by USD 100 per ton, on average for all systems considered.

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Pages: 8 p.

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Details

  • Original title: Impacts of refrigerant charge on air conditioner and heat pump performance.
  • Record ID : 30000496
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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