Modelling of Split Condenser Heat Pump with Limited Set of Plate Heat Exchanger Dimensions

Stefan Wuust Christensen, Brian Elmegaard, Wiebke Brix Markussen, C. Madsen

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Abstract

This paper presents a numerical study of optimal plate dimensions in a split condenser heat pump (SCHP), using ammonia as refrigerant. The SCHP setup differs from a traditional heat pump (THP) setup in the way that two separate water streams on the secondary side of the condenser are heated in parallel to different temperature levels, whereas only one stream is heated in a THP.
The length/width ratio of the plate heat exchangers on the high pressure side of a SCHP was investigated to find the optimal plate dimensions with respect to minimum area of the heat exchangers. The total heat exchanger area was found to decrease with an increasing length/width ratio of the plates. The marginal change in heat exchanger area was shown to be less significant for heat exchangers with high length/width ratios.
In practice only a limited number of plate dimensions are available and feasible in the production. This was investigated to find the practical potential of a SCHP compared to a THP. Using plates optimized for a SCHP in a THP, the total required heat exchanger area increased by approximately 100% for the conditions investigated in this study, indicating that available plate dimensions influence whether a THP or SCHP is beneficial.
Original languageEnglish
Title of host publicationProceedings of ECOS 2017: 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Number of pages11
Publication date2017
Publication statusPublished - 2017
Event30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - The Conrad Prebys Aztec Student Union, San Diego State University 6075 Aztec Cir Dr, San Diego, United States
Duration: 2 Jul 20176 Jul 2017
Conference number: 30
http://www.ecosconference.org/

Conference

Conference30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Number30
LocationThe Conrad Prebys Aztec Student Union, San Diego State University 6075 Aztec Cir Dr
CountryUnited States
CitySan Diego
Period02/07/201706/07/2017
Internet address

Keywords

  • Heat Pump
  • Split Condenser
  • Plate Heat Exchanger
  • Ammonia
  • Vapor Compression
  • Plate Dimensions

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