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Abstract
High-temperature heat pumps can provide process heat by lifting recovered waste heat to temperature levels needed for industrial processes. The application of a trans-critical cycle extends the operating range of a heat pump beyond the critical temperature of the used refrigerant. A prototype of a high-temperature heat pump using R600 was developed and investigated. The one-stage cycle uses a suction gas cooled reciprocating compressor, a low-pressure accumulator and an internal heat exchanger (IHX) for suction gas superheating. Experimental data of sub-critical and trans-critical operation is presented. In sub-critical operation, a coefficient of performance (COP) of 4.5 at a heat source inlet temperature of 60 °C and a heat sink outlet temperature of 110 °C and in trans-critical operation a COP of 3.1 at a heat sink outlet temperature of 160 °C was achieved. The measurement data further shows a dependency of the COP on the high-side pressure and suction gas superheating realized in the IHX.
Original language | English |
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Title of host publication | 14th IIR Gustav-Lorentzen Conference on Natural Fluids, GL 2020 - Proceedings |
Pages | 500-505 |
Number of pages | 6 |
ISBN (Electronic) | 9782362150401 |
DOIs | |
Publication status | Published - Dec 2020 |
Event | 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants: GL 2020 - Online, Virtuell, Kyoto, Japan Duration: 7 Dec 2020 → 9 Dec 2020 https://biz.knt.co.jp/tour/2020/12/gl2020/ https://biz.knt.co.jp/tour/2020/12/gl2020/index.html |
Publication series
Name | Refrigeration Science and Technology |
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Volume | 2020-December |
ISSN (Print) | 0151-1637 |
Conference
Conference | 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants |
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Abbreviated title | GL2020 |
Country/Territory | Japan |
City | Virtuell, Kyoto |
Period | 7/12/20 → 9/12/20 |
Internet address |
Keywords
- COP
- Hydrocarbons
- Industrial Heat Pump
- Trans-critical Cycle
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Electrical and Electronic Engineering
- Control and Systems Engineering
Fields of Expertise
- Sustainable Systems
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Experimental analysis of a R600 high-temperature heat pump in sub-critical and trans-critical operation
Manuel Verdnik (Speaker) & René Rieberer (Contributor)
Dec 2020Activity: Talk or presentation › Talk at conference or symposium › Science to public