Compression-resorption heat pumps (CRHP) enhanced by wet compression are considered a very promising option to upgrade low grade waste heat from the industry. This is especially true for applications where the heat source and/or sink have a large temperature glide. But commercial solutions using wet compression are not yet available on the market. Compared to the classically used vapor compression heat pumps (VCHP), CRHP can provide much better performance but only if the efficiency of the compressor exceeds 0.7. In this respect, a twin screw compressor has been identified as a potential solution to reach this efficiency goal. This study makes use of the entropy production minimization to identify where the major irreversibilites are located in a CRHP system operated with an ammonia-water mixture. A detailed model of the wet compressor and the resorber are coupled with simplified models of other components of the HP cycle to analyze where potential improvements can be made. The results show that significant benefits can be obtained using CRHP.

Original languageEnglish
Title of host publicationProceedings of the 13th IIR Gustav Lorentzen Conference on Natural Refrigerants
Subtitle of host publicationNatural Refrigerant Solutions for Warm Climate Countries
EditorsJ.M. Corberán, A. Coronas-Salcedo, J. Gonzálvez-Maciá
PublisherInternational Institute of Refrigeration
Pages230-237
ISBN (Electronic)978-236215026-5
DOIs
Publication statusPublished - 2018
Event13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries - Valencia, Spain
Duration: 18 Jun 201820 Jun 2018

Publication series

NameIIR’s Refrigeration Science and Technology series

Conference

Conference13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
CountrySpain
CityValencia
Period18/06/1820/06/18

    Research areas

  • Ammonia-water, CRHP, Entropy production, Twin screw compressor

ID: 46117239