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HFC-134a/HC-600a/HC-290 mixture a retrofit for CFC-12 systems.

Author(s) : SEKHAR S. J., LAL D. M.

Type of article: Article, IJR article

Summary

The environmental concerns with the impact of refrigerant emissions lead to the importance in identifying a long-term alternative to meet all requirements in respect of system performance and service. Even though HFC-134a and HC blend (containing 55.2% HC600a and 44.8% HC-290 by weight) have been reported to be substitutes for CFC-12, they have their own drawbacks in respect of energy efficiency/flammability/serviceability aspects of the system. In this present work, experimental investigation has been carried out on the performance of an ozone friendly refrigerant mixture (containing HFC-134a/HC blend) in two low temperature systems (a 165 l domestic refrigerator and a 400 l deep freezer) and two medium temperature systems [a 165 l vending machine (visi cooler) and a 3.5 kW walk-in cooler]. The oil miscibility of the new mixture with mineral oil was also studied and found to be good. The HFC-134a/HC blend mixture that contains 9% HC blend (by weight) has better performance resulting in 10-30 and 5-15% less energy consumption (than CFC-12) in medium and low temperature system, respectively.

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Pages: 735-743

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Details

  • Original title: HFC-134a/HC-600a/HC-290 mixture a retrofit for CFC-12 systems.
  • Record ID : 2005-1639
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 28 - n. 5
  • Publication date: 2005/08

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