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This article discusses the charge reduction options in ammonia systems in general and in smaller, low charge air-cooled chillers in particular. The focus is on charge reduction in heat exchangers, especially microchannel, but information is provided about new development in compressor technologies, specifically, the first hermetic scroll compressor. Data for void fraction of ammonia flow in microchannels is presented along with the data for an air cooled condenser and system. This paper also presents the excellent opportunities of using ammonia compared to other refrigerants in microchannels.
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Pages: 2010-2
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Details
- Original title: Ultra low charged air-cooled ammonia chillers.
- Record ID : 2010-1447
- Languages: English
- Source: 9th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2010). Proceedings. Sydney, Australia, April 12-14, 2010.
- Publication date: 2010/04/12
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Indexing
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Themes:
Compressors;
Ammonia;
Chillers - Keywords: Microchannel; Chiller; Reduction; Ammonia; Air-cooled exchanger; Refrigerant; Refrigerant charge; Hermetic compressor; Scroll compressor
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Microchannel heat exchangers as a design option...
- Author(s) : HRNJAK P.
- Date : 2002/08/26
- Languages : English
- Formats : PDF
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Low charge ammonia air-cooled chillers with mic...
- Author(s) : ALOISIO F., DEL GOBBO G.
- Date : 2011/04/14
- Languages : English
- Source: 4th Conference on Ammonia Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 14-16, 2011.
- Formats : PDF
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Low charged hermetic ammonia chillers are excel...
- Author(s) : HRNJAK P.
- Date : 2011/04/14
- Languages : English
- Source: 4th Conference on Ammonia Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 14-16, 2011.
- Formats : PDF
View record
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System performance characteristics of a helical...
- Author(s) : BAILEY M. B.
- Date : 1998
- Languages : English
- Source: ASHRAE Transactions. 1998 annual Meeting, Toronto, Ontario + CD-ROM.
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Recent advances in ammonia LPR systems for free...
- Author(s) : PEARSON A. B., HAMILTON D.
- Date : 2014/08/02
- Languages : English
- Source: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
- Formats : PDF
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