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Technologies needed to advance the position of major natural refrigerants: HC, NH3, and CO2 .

Number: keynote n. 1

Author(s) : HRNJAK P.

Summary

Hydrocarbons (ie. propane, isobutene, propene, ethane, etc.) ammonia, and carbon dioxide are the three major natural refrigerants that could be really strong contenders for dominant positions in certain applications throughout the world. Actually, a few of them have already achieved this position: ammonia in large industrial refrigeration mostly in the USA and Europe, isobutene in household refrigerators mostly in northern Europe, CO2 in heat pumps for water heating in Japan. This paper discusses which technologies or improvements are needed to increase the number of successful applications. Major directions are: charge reduction for each candidate, hermetic ammonia compressors, use of less costly materials in ammonia systems, further improved compressors for CO2 as well as better heat exchangers (HX) and work recovery options.

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Pages: 7 p.

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Details

  • Original title: Technologies needed to advance the position of major natural refrigerants: HC, NH3, and CO2 .
  • Record ID : 30004703
  • Languages: English
  • Source: 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Publication date: 2012/06/25

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