Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps
To 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 t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/3/635 |
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| author | Limei Gai Petar Sabev Varbanov Timothy Gordon Walmsley Jiří Jaromír Klemeš |
| author_facet | Limei Gai Petar Sabev Varbanov Timothy Gordon Walmsley Jiří Jaromír Klemeš |
| author_sort | Limei Gai |
| collection | DOAJ |
| description | To 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. |
| first_indexed | 2024-04-14T01:27:54Z |
| format | Article |
| id | doaj.art-28c19b18e77644c58612c7e9a25ce4bc |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T01:27:54Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-28c19b18e77644c58612c7e9a25ce4bc2022-12-22T02:20:19ZengMDPI AGEnergies1996-10732020-02-0113363510.3390/en13030635en13030635Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat PumpsLimei Gai0Petar Sabev Varbanov1Timothy Gordon Walmsley2Jiří Jaromír Klemeš3Sustainable Process Integration Laboratory-SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology-VUT Brno, Technická 2896/2, 61600 Brno, Czech RepublicSustainable Process Integration Laboratory-SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology-VUT Brno, Technická 2896/2, 61600 Brno, Czech RepublicSustainable Energy and Water Systems Group, School of Engineering, The University of Waikato, Hamilton 3216, New ZealandSustainable Process Integration Laboratory-SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology-VUT Brno, Technická 2896/2, 61600 Brno, Czech RepublicTo 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.https://www.mdpi.com/1996-1073/13/3/635process integrationheat pumpsjoule cycle heat pumppinch analysis |
| spellingShingle | Limei Gai Petar Sabev Varbanov Timothy Gordon Walmsley Jiří Jaromír Klemeš Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps Energies process integration heat pumps joule cycle heat pump pinch analysis |
| title | Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps |
| title_full | Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps |
| title_fullStr | Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps |
| title_full_unstemmed | Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps |
| title_short | Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps |
| title_sort | critical analysis of process integration options for joule cycle and conventional heat pumps |
| topic | process integration heat pumps joule cycle heat pump pinch analysis |
| url | https://www.mdpi.com/1996-1073/13/3/635 |
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