Heat Pump Bridge Analysis Using the Modified Energy Transfer Diagram

Florian Schlosser, Heinrich Wiebe, Timothy G. Walmsley, Martin J. Atkins, Michael R. W. Walmsley and Jens Hesselbach
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Florian Schlosser: Department Sustainable Products and Processes, University of Kassel, Kurt-Wolters-Straße 3, 34125 Kassel, Germany
Heinrich Wiebe: Department Sustainable Products and Processes, University of Kassel, Kurt-Wolters-Straße 3, 34125 Kassel, Germany
Timothy G. Walmsley: Energy Systems Integration Group, School of Engineering, University of Waikato, Hamilton 3216, New Zealand
Martin J. Atkins: Energy Systems Integration Group, School of Engineering, University of Waikato, Hamilton 3216, New Zealand
Michael R. W. Walmsley: Energy Systems Integration Group, School of Engineering, University of Waikato, Hamilton 3216, New Zealand
Jens Hesselbach: Department Sustainable Products and Processes, University of Kassel, Kurt-Wolters-Straße 3, 34125 Kassel, Germany

Energies, 2020, vol. 14, issue 1, 1-24

Abstract: Heat pumps are the key technology to decarbonise thermal processes by upgrading industrial surplus heat using renewable electricity. Existing insight-based integration methods refer to the idealised Grand Composite Curve requiring the full exploitation of heat recovery potential but leave the question of how to deal with technical or economic limitations unanswered. In this work, a novel Heat Pump Bridge Analysis (HPBA) is introduced for practically targeting technical and economic heat pump potential by applying Coefficient of Performance curves into the Modified Energy Transfer Diagram (METD). Removing cross-Pinch violations and operating heat exchangers at minimum approach temperatures by combined application of Bridge Analysis increases the heat recovery rate and reduce the temperature lift to be pumped at the same time. The insight-based METD allows the individual matching of heat surpluses and deficits of individual streams with the capabilities and performance of different market-available heat pump concepts. For an illustrative example, the presented modifications based on HPBA increase the economically viable share of the technical heat pump potential from 61% to 79%.

Keywords: heat pump integration; Pinch Analysis; retrofit; Modified Energy Transfer Diagram (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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