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Low GWP working fluids for reversible systems of high temperature heat pump and organic Rankine cycle (HTHP/ORC).
Number: pap. 1210
Author(s) : PERIS PÉREZ B., NAVARRO-ESBRÍ J., MOLÉS F., et al.
Summary
Paper published in poster form during the conference. An innovative measure to recover low-grade waste heat is a reversible system based on a High Temperature Heat Pump (HTHP) and an Organic Rankine Cycle (ORC). This system can produce useful thermal energy and, in periods with no thermal demand, produce electricity. This study analyzes the influence of several working fluids (HFC-245fa, ammonia, isobutane, and HFO-1336mzz-Z) over the system using a theoretical model in basic and IHX cycles of HTHP/ORC architectures. The model has been optimized to use the more appropriate built-in ratio and the IHX effectiveness. Firstly, the built-in results highlight scroll and screw technologies as the most appropriate for the compressor-expander component and ammonia as the working fluid that requires minor size. Secondly, IHX effectiveness can be maximized for all the cases studied except for ammonia at lower evaporating temperatures. Finally, HFO-1336mzz-Z is the working fluid that leads to higher performance operating in both modes (net electrical efficiency for ORC and COP for HTHP).
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Details
- Original title: Low GWP working fluids for reversible systems of high temperature heat pump and organic Rankine cycle (HTHP/ORC).
- Record ID : 30023757
- Languages: English
- Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
- Publication date: 2018/06/18
- DOI: http://dx.doi.org/10.18462/iir.gl.2018.1210
Links
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Indexing
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Themes:
Heat pumps techniques;
HFCs;
Ammonia;
Hydrocarbons;
Other energy-saving and energy-recovery systems;
Other refrigerating systems (desiccant cooling, thermoelectrics, thermoacoustics…) - Keywords: Organic Rankine cycle; R717; Ammonia; Simulation; Heat pump; Modelling; Hydrocarbon; High temperature; Energy efficiency; Waste heat
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- Author(s) : LAVERNIA A. C., ZIVIANI D., GAFUR N., et al.
- Date : 2018/09
- Languages : English
- Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
- Formats : PDF
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Testing of R245fa and R1233zd(E) in a high temp...
- Author(s) : LAVERNIA A. C., ZIVIANI D., GAFUR N., et al.
- Date : 2018/09
- Languages : English
- Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
- Formats : PDF
View record
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- Date : 2018/07/09
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- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
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- Date : 2012/07/16
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- Source: 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
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Stabler R-1233zd(E) for energy recovery applica...
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- Date : 2018/09
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- Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
- Formats : PDF
View record