Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)

Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)

Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) has been proposed to solve the problem of poor heat transfer during heat exchange process, which is caused by unavoidable decrease of temperature differences. This paper conducts a theoretical study examining the overall thermal performan...

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Veröffentlicht in:International journal of heat and mass transfer 2013-03, Vol.58 (1-2), p.86-96
Hauptverfasser: Tian, Y., Zhao, C.Y.
Format: Artikel
Sprache:eng
Schlagworte:
Brinkman–Forchheimer
Cascaded Thermal Energy Storage
Enthalpy method
Exergy
Heat transfer enhancement
Metal foam
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container_title International journal of heat and mass transfer
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creator Tian, Y.
Zhao, C.Y.
description Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) has been proposed to solve the problem of poor heat transfer during heat exchange process, which is caused by unavoidable decrease of temperature differences. This paper conducts a theoretical study examining the overall thermal performance of Single-stage Thermal Energy Storage (STES), Cascaded Thermal Energy Storage (CTES) and MF-CTES, with both heat exchange rate and exergy efficiency being considered. The main findings are: heat exchange rate of STES is improved by CTES (up to 30%), and is further improved by MF-CTES (by 2–7 times); exergy efficiency of STES cannot be significantly improved by CTES (−15% to +30%), nor by MF-CTES; exergy transfer rate of STES is increased by CTES (up to 23%), and is further increased by MF-CTES (by 2–7 times).
doi_str_mv 10.1016/j.ijheatmasstransfer.2012.11.034
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subjects Brinkman–Forchheimer
Cascaded Thermal Energy Storage
Enthalpy method
Exergy
Heat transfer enhancement
Metal foam
title Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)
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