A Graphical Method for Combined Heat Pump and Indirect Heat Recovery Integration

Raphael Agner, Benjamin H. Y. Ong, Jan A. Stampfli, Pierre Krummenacher and Beat Wellig
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Raphael Agner: Competence Center Thermal Energy Systems and Process Engineering, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, 6048 Horw, Switzerland
Benjamin H. Y. Ong: Competence Center Thermal Energy Systems and Process Engineering, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, 6048 Horw, Switzerland
Jan A. Stampfli: Competence Center Thermal Energy Systems and Process Engineering, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, 6048 Horw, Switzerland
Pierre Krummenacher: Institut de Génie Thermique, The School of Management and Engineering Vaud, Avenue des Sports 20, 1401 Yverdon-les-Bains, Switzerland
Beat Wellig: Competence Center Thermal Energy Systems and Process Engineering, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, 6048 Horw, Switzerland

Energies, 2022, vol. 15, issue 8, 1-21

Abstract: Industrial sectors are improving their energy efficiency and increasing their share of renewables for heating and cooling demands by using lower emission technologies. One specific approach to help achieve these targets is the integration of heat pumps (HPs) in industrial processes. However, due to the temporal variation of the heating and cooling requirements in non-continuous processes, the integration of HP is challenging. In this paper, a structured method for the design of HP integration is proposed. The method implements an engineer-centred workflow that extends the concept of the Indirect Source Sink Profile (ISSP) to HP integration. For this purpose, an adapted Grand Composite Curve is derived from the ISSP. This ensures correct HP integration across the pinch while maintaining the temperature lift of the HP small. The proposed workflow is applied to a demonstration case study and a case study from industry. In both cases, the resulting system with integrated HP enables the elimination of hot utility demand and significantly reduces cold utility demands. The static paybacks of the proposed solutions are in the range of 4.5 to 5 year.

Keywords: energy optimisation; process integration; heat pump; thermal energy storage; electrification (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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