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CO2 and other refrigerants with low critical temperatures may be utilized in heat pumps using a trans-critical vapour compression cycle. An introduction to the trans-critical process is given. The optimization/simulation program used in the evaluation of the process is described, along with its input data. Loss distribution, and energy and volumetric efficiency of a trans-critical system are compared to those of a conventional vapour compression system at optimum cost conditions. Various aspects of the two systems are discussed. A CO2 system was found superior to an optimized R134a system utilizing super-heat and sub-cooling, for tap water heating.
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Details
- Original title: Trans-critical vapour compression heat pumps.
- Record ID : 1995-2521
- Languages: English
- Source: New Applications of Natural Working Fluids in Refrigeration and Air Conditioning
- Publication date: 1994/05/10
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
- Themes: Heat pumps techniques
- Keywords: Compression system; Heat pump; Performance; Optimization; Critical state; Heating; Domestic water; CO2
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CO2 heat pump cycle and system.
- Author(s) : MA Y., YANG Z., LU C.
- Date : 1997/09/09
- Languages : English
- Source: International Symposium on Air Conditioning in High Rise Buildings - 1997
- Formats : PDF
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Entropy production minimization of a CRHP.
- Author(s) : AARTS S. P., GUÕJÓNSDÓTTIR V., INFANTE FERREIRA C., et al.
- Date : 2017/04/23
- Languages : English
- Source: 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
- Formats : PDF
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COMPRESSION HEAT PUMP COP.
- Author(s) : PROTSENKO V. P., RADCHENKO V. A.
- Date : 1988
- Languages : Russian
- Source: Teploenergetika - n. 8
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Computer aided design of high efficiency heat p...
- Author(s) : KIM O. J., YEOM H. K.
- Date : 1998/04/21
- Languages : English
- Source: Cryogenics and refrigeration. Proceedings of ICCR '98.
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AN AIR-WATER COMPRESSION HEAT PUMP.
- Author(s) : RIJ M. L. D. van
- Date : 1984/08
- Languages : Dutch
- Source: Koeltech. Klim. - vol. 77 - n. 8
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