Enhanced technical and economic working domains of industrial heat pumps operated in series

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

262 Downloads (Pure)


By operating heat pumps (HPs) in series, it is possible to obtain closer match between working fluid and sink- and source streams, resulting in higher coefficient of performance (COP). For industrial HPs, it was found that serial connection of either two or three units results in an increase in COP and a decrease in net present value (NPV), due to the effects of economy of scale. However, connecting HPs in series may reduce the discharge temperature, which is of particular interest when assessing R717 HPs. Another possibility from serial connection is to mix different types of HP units, in order obtain specific characteristics. The technical and economical working domains were calculated for two serial connections. Both configurations result in an increased working domain for the investigated dual unit serial connections.
Original languageEnglish
Title of host publicationProceedings of the 24th IIR International Congress of Refrigeration
Number of pages4
PublisherInternational Institute of Refrigeration
Publication date2015
Article numberID:295
Publication statusPublished - 2015
Event24th IIR International Congress of Refrigeration: Improving Quality of Life, Preserving the Earth - Yokohama, Japan
Duration: 16 Aug 201522 Aug 2015
Conference number: 24


Conference24th IIR International Congress of Refrigeration


Dive into the research topics of 'Enhanced technical and economic working domains of industrial heat pumps operated in series'. Together they form a unique fingerprint.

Cite this