Print Email Facebook Twitter Improving plant-level heat pump performance through process modifications Title Improving plant-level heat pump performance through process modifications Author de Raad, B.W. (TU Delft Energie and Industrie) van Lieshout, Marit (Rotterdam University of Applied Sciences) Stougie, L. (TU Delft Energie and Industrie) Ramirez, Andrea (TU Delft ChemE/Chemical Engineering) Department ChemE/Chemical Engineering Date 2024 Abstract Heat pumps are a promising option to decarbonize the industrial sector. However, their performance at a plant-level can be affected by other process changes. In this work, process changes that improve the heat pump's performance have been identified using Process Change Analysis (PCA), where the background pinch point is used as a reference point for appropriate placement. The effects of the process changes on the heat pump's work requirements are studies by introducing exergy to PCA to form the split exergy grand composite curve. This graph shows the work potential of the streams connected to the heat pump and therefore its work targets. The framework is demonstrated in two case studies. In a biodiesel production plant, it allowed to identify technologies that enhance heat pump performance while reducing overall heating requirements. Here, a heat pump transfers 1.9 MW with a COP of 4.2 but incurs a 40 kW penalty for transferring heat above the background process's pinch temperature. Replacing the wet water washer with a membrane separation unit avoided this penalty, while drastically reducing energy requirements from 0.9 MW to 0.3 MW. in a vinyl chloride monomer-purification process, PCA showed how the extraction of heat by the heat pump impacted the formation of the background pinch, from which an implementation strategy was derived that increased the heat pump's plant-level performance by 6.5% with respect to standard implementation. Subject Exergy grand composite curveHeat pumpsPinch analysisProcess change analysis To reference this document use: http://resolver.tudelft.nl/uuid:e6472160-3d10-4a1c-8241-759fe215e85e DOI https://doi.org/10.1016/j.apenergy.2024.122667 ISSN 0306-2619 Source Applied Energy, 358 Part of collection Institutional Repository Document type journal article Rights © 2024 B.W. de Raad, Marit van Lieshout, L. Stougie, Andrea Ramirez Files PDF 1-s2.0-S0306261924000503-main.pdf 2.9 MB Close viewer /islandora/object/uuid:e6472160-3d10-4a1c-8241-759fe215e85e/datastream/OBJ/view