Comparison of correlations for modelling heat exchanger performance in a compact ammonia refrigeration unit

Valentin Salgado Fuentes*, Rossana Boccia, Wiebke Brix Markussen, Erasmus Damgaard Rothuizen, Jóhannes Kristófersson, Claus Madsen, Brian Elmegaard

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper compare the correlations for heat transfer coefficient that can be used for modelling performance of plate heat exchangers when used in compact ammonia chillers. A 27 kW ammonia chiller was used to collect data of four different operating conditions. After that, the most representative data from the system were used to validate a numerical model of the chiller. The model simulated the performance using several correlations of heat transfer coefficient. The results showed that a suitable combination of heat transfer coefficient correlations for refrigerant and water to calculate the heat flow rate through the evaporator could yield a deviation between -16 % and -12 % when compared against experimental data. In the case of the condenser, the correlations presented a deviation between -9.9 % and -6.1 % in heat flow rate.
Original languageEnglish
Title of host publicationProceedings of the14th IIR-Gustav Lorentzen Conference on Natural Refrigerants
PublisherInternational Institute of Refrigeration
Publication date2020
Pages610-615
Article number1128
ISBN (Electronic)978-2-36215-040-1
DOIs
Publication statusPublished - 2020
Event14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020) - , Japan
Duration: 7 Dec 20209 Dec 2020
https://biz.knt.co.jp/tour/2020/12/gl2020/

Conference

Conference14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020)
CountryJapan
Period07/12/202009/12/2020
Internet address
SeriesScience et Technique du Froid
ISSN0151-1637

Keywords

  • Ammonia
  • Chiller
  • Correlations
  • Numerical Model

Fingerprint Dive into the research topics of 'Comparison of correlations for modelling heat exchanger performance in a compact ammonia refrigeration unit'. Together they form a unique fingerprint.

Cite this