Publication detail

Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps

Gai, L., Varbanov, P.S., Walmsley, T.G., Klemeš, J.J.

Original Title

Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps

Type

journal article in Web of Science

Language

English

Original Abstract

o date, research on heat pumps (HP) has mainly focused on vapour compression heat pumps (VCHP), transcritical heat pumps (TCHP), absorption heat pumps, and their heat integration with processes. Few studies have considered the Joule cycle heat pump (JCHP), which raises several questions. What are the characteristics and specifics of these different heat pumps? How are they different when they integrate with the processes? For different processes, which heat pump is more appropriate? To address these questions, the performance and integration of different types of heat pumps with various processes have been studied through Pinch Methodology. The results show that different heat pumps have their own optimal application range. The new JCHP is suitable for processes in which the temperature changes of source and sink are both massive. The VCHP is more suitable for the source and sink temperatures, which are near-constant. The TCHP is more suitable for sources with small temperature changes and sinks with large temperature changes. This study develops an approach that provides guidance for the selection of heat pumps by applying Process Integration to various combinations of heat pump types and processes. It is shown that the correct choice of heat pump type for each application is of utmost importance, as the Coefficient of Performance can be improved by up to an order of magnitude. By recovering and upgrading process waste heat, heat pumps can save 15-78% of the hot utility depending on the specific process.

Keywords

Process Integration; heat pumps; Joule cycle heat pump; Pinch Analysis; DESIGN METHOD; RECOVERY; FRAMEWORK; SYSTEMS

Authors

Gai, L., Varbanov, P.S., Walmsley, T.G., Klemeš, J.J.

Released

3. 2. 2020

Publisher

MDPI AG

Location

MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND

ISBN

1996-1073

Periodical

ENERGIES

Number

13

State

Swiss Confederation

Pages from

635

Pages to

635

Pages count

25

URL

https://www.mdpi.com/1996-1073/13/3/635

BibTex

@article{BUT165357,
  author="Limei {Gai} and Petar Sabev {Varbanov} and Jiří {Klemeš}",
  title="Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps",
  journal="ENERGIES",
  year="2020",
  number="13",
  pages="635--635",
  doi="10.3390/en13030635",
  issn="1996-1073",
  url="https://www.mdpi.com/1996-1073/13/3/635"
}