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Testing of tri-partite CO2 gas cooler prototype for domestic hot water and space heating

Abstract

The aim of this study was to test a tri-partite gas cooler for CO2 heat pumps (5-13 kW). The proposed heat
exchanger allowed the simultaneous and separate production of space heating and domestic hot water with an
integrated design, simplifying the heat pump layout and piping requirements. The experimental campaign was
dedicated to the performance of the gas cooler at various operation conditions. These operation modes are: i)
only space heating, ii) only domestic hot water iii) simultaneous production of domestic hot water and space
heating. The results of the test campaigns were analysed in order to determine potential improvements or
required redesign of the heat exchanger. The heat exchanger solution was integrated to novel prototype of trigeneration
CO2 heat pump system.
Keywords: CO2, domestic hot water, space heating, pressure drop, heat transfer
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Category

Academic chapter

Language

English

Author(s)

  • Ignat Tolstorebrov
  • Alireza Zendehboudi
  • Krzysztof Banasiak
  • Lukas Köster
  • Ángel Álvarez Pardiñas
  • Armin Hafner

Affiliation

  • SINTEF Energy Research / Termisk energi
  • Karlsruhe University of Applied Sciences
  • Norwegian University of Science and Technology

Year

2020

Publisher

International Institute of Refrigeration

Book

Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020

ISBN

9782362150401

Page(s)

91 - 96

View this publication at Norwegian Research Information Repository