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CFD-based correlation development for sCO2 in TPMS-based heat exchangers for heat pump water heater systems.
Number: 1249
Author(s) : DAS A., TANCABEL J., AUTE V.
Summary
Trans/supercritical carbon dioxide (sCO2) heat pumps have become popular for their excellent performance and compact design with applications to refrigeration as well as space and water heating. To further improve these systems, researchers are focusing on the development of highly efficient and compact heat exchangers (HXs), e.g., gas coolers. Recently, Triply Periodic Minimal Surface (TPMS) based HXs have attracted attention due to their excellent efficiency and compactness. In this work, computational fluid dynamics (CFD) simulations are conducted to determine the thermal-hydraulic performance characteristics of two promising TPMS-based HX structures, Gyroid and Fisher-Koch S (FK-S), using sCO2 and water as the working fluids. A comparative analysis of the structures is presented in terms of Nusselt number and friction factor. CFD-based Nusselt number and friction factor correlations are proposed for both the structures which can be used by researchers to develop next generation, high-performance HXs for sCO2 heat pumps.
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Details
- Original title: CFD-based correlation development for sCO2 in TPMS-based heat exchangers for heat pump water heater systems.
- Record ID : 30032750
- Languages: English
- Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
- Publication date: 2024/08
- DOI: http://dx.doi.org/10.18462/iir.gl.2024.1249
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Indexing
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Themes:
CO2;
Heat pumps techniques;
Evaporators, condensers and other heat exchangers - Keywords: Heat pump; CO2; R744; CFD; Correlation; Nusselt; Simulation
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