Entropy production minimization of a CRHP

S.P. Aarts, V. Gudjonsdottir, Carlos Infante Ferreira, A.A. Kiss

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Compression resorption heat pumps (CRHP) are a promising option to upgrade waste heat from industry. One way to optimize a CRHP is by minimizing the entropy production rate of the heat pump; that is to minimize the lost work of the system. In this paper a CRHP operating with an ammonia-water mixture is analysed based on an application case from the chemical industry. First, a global approach is used to analyse the entropy production rate of each of the components in the heat pump cycle. Based on the result from the global approach the component with the maximum energy dissipation in the heat pump is identified, in this case the resorber. The resorber is therefore further analysed with a detailed thermodynamic state model and entropy production is calculated using the theory of non-equilibrium thermodynamics. Measures to reduce the non-uniformity of the entropy production are then proposed based on the theory of equipartition.
Original languageEnglish
Title of host publicationProceedings of the 5th IIR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants (TPTPR 2017)
Place of PublicationParis, France
PublisherInternational Institute of Refrigeration
Pages475-482
ISBN (Print)978-1-5108-4209-0
DOIs
Publication statusPublished - 2017
EventTPTPR 2017: 5th IRR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants - Seoul, Korea, Democratic People's Republic of
Duration: 23 Apr 201726 Apr 2017

Publication series

NameRefrigeration Science and Technology Proceedings
Volume2017-1

Conference

ConferenceTPTPR 2017: 5th IRR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants
CountryKorea, Democratic People's Republic of
CitySeoul
Period23/04/1726/04/17

Keywords

  • heat pump
  • compression
  • resorption
  • entropy
  • ammonia-water
  • waste heat
  • performance
  • optimization

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