Thermodynamic analysis of packed bed thermal energy storage system

Huan Guo; Yujie Xu; Cong Guo; Haisheng Chen; Yifei Wang; Zheng Yang; Y Huang; Binlin Dou

Thermodynamic analysis of packed bed thermal energy storage system

Huan Guo, Yujie Xu, Cong Guo, Haisheng Chen, Yifei Wang, Zheng Yang, Y Huang, Binlin Dou

Research output: Contribution to journal › Article

Abstract

A packed-bed thermal energy storage (PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of PBTES with fixed temperatures on both ends is built. By using this model, the exergy destruction, thermocline thickness, thermal storage capacity, thermal storage time, and other key parameters can be calculated in a simple way. In addition, the model explains the internal reason for the change of thermocline thickness during thermal storage and release processes. Furthermore, the stable operation of the PBTES device is analyzed, and it is found that higher inlet temperature of hot air, and lower temperature difference between cold and hot air can produce less exergy destruction and achieve a larger cycle number of stable operation. The work can be employed as the basis of the design and engineering application of PBTES.

Language	English
Pages	1-15
Number of pages	15
Journal	Journal of Thermal Science
Publication status	Accepted/In press - 3 Jan 2019

Fingerprint

Packed beds

Thermal energy

Energy storage

Thermodynamics

Exergy

Temperature distribution

Temperature

Air

Specific heat

Heat transfer

Fluids

Hot Temperature

Keywords

packed bed thermal energy storage
thermocline
steady
thermaldynamic analysis
stable operation

Cite this

Guo, H., Xu, Y., Guo, C., Chen, H., Wang, Y., Yang, Z., ... Dou, B. (Accepted/In press). Thermodynamic analysis of packed bed thermal energy storage system. Journal of Thermal Science, 1-15.

Guo, Huan ; Xu, Yujie ; Guo, Cong ; Chen, Haisheng ; Wang, Yifei ; Yang, Zheng ; Huang, Y ; Dou, Binlin. / Thermodynamic analysis of packed bed thermal energy storage system. In: Journal of Thermal Science. 2019 ; pp. 1-15.

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title = "Thermodynamic analysis of packed bed thermal energy storage system",

abstract = "A packed-bed thermal energy storage (PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of PBTES with fixed temperatures on both ends is built. By using this model, the exergy destruction, thermocline thickness, thermal storage capacity, thermal storage time, and other key parameters can be calculated in a simple way. In addition, the model explains the internal reason for the change of thermocline thickness during thermal storage and release processes. Furthermore, the stable operation of the PBTES device is analyzed, and it is found that higher inlet temperature of hot air, and lower temperature difference between cold and hot air can produce less exergy destruction and achieve a larger cycle number of stable operation. The work can be employed as the basis of the design and engineering application of PBTES.",

keywords = "packed bed thermal energy storage, thermocline, steady, thermaldynamic analysis, stable operation",

author = "Huan Guo and Yujie Xu and Cong Guo and Haisheng Chen and Yifei Wang and Zheng Yang and Y Huang and Binlin Dou",

note = "Was waiting on information from author and was off on bereavement leave and missed the deadline on acceptance. An exception to be added that it was validated within three months of publication",

year = "2019",

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language = "English",

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Guo, H, Xu, Y, Guo, C, Chen, H, Wang, Y, Yang, Z, Huang, Y & Dou, B 2019, 'Thermodynamic analysis of packed bed thermal energy storage system', Journal of Thermal Science, pp. 1-15.

Thermodynamic analysis of packed bed thermal energy storage system. / Guo, Huan; Xu, Yujie; Guo, Cong; Chen, Haisheng; Wang, Yifei; Yang, Zheng; Huang, Y; Dou, Binlin.

In: Journal of Thermal Science, 03.01.2019, p. 1-15.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Thermodynamic analysis of packed bed thermal energy storage system

AU - Guo, Huan

AU - Xu, Yujie

AU - Guo, Cong

AU - Chen, Haisheng

AU - Wang, Yifei

AU - Yang, Zheng

AU - Huang, Y

AU - Dou, Binlin

N1 - Was waiting on information from author and was off on bereavement leave and missed the deadline on acceptance. An exception to be added that it was validated within three months of publication

PY - 2019/1/3

Y1 - 2019/1/3

N2 - A packed-bed thermal energy storage (PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of PBTES with fixed temperatures on both ends is built. By using this model, the exergy destruction, thermocline thickness, thermal storage capacity, thermal storage time, and other key parameters can be calculated in a simple way. In addition, the model explains the internal reason for the change of thermocline thickness during thermal storage and release processes. Furthermore, the stable operation of the PBTES device is analyzed, and it is found that higher inlet temperature of hot air, and lower temperature difference between cold and hot air can produce less exergy destruction and achieve a larger cycle number of stable operation. The work can be employed as the basis of the design and engineering application of PBTES.

AB - A packed-bed thermal energy storage (PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of PBTES with fixed temperatures on both ends is built. By using this model, the exergy destruction, thermocline thickness, thermal storage capacity, thermal storage time, and other key parameters can be calculated in a simple way. In addition, the model explains the internal reason for the change of thermocline thickness during thermal storage and release processes. Furthermore, the stable operation of the PBTES device is analyzed, and it is found that higher inlet temperature of hot air, and lower temperature difference between cold and hot air can produce less exergy destruction and achieve a larger cycle number of stable operation. The work can be employed as the basis of the design and engineering application of PBTES.

KW - packed bed thermal energy storage

KW - thermocline

KW - steady

KW - thermaldynamic analysis

KW - stable operation

M3 - Article

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EP - 15

JO - Journal of Thermal Science

T2 - Journal of Thermal Science

JF - Journal of Thermal Science

SN - 1003-2169

ER -

Guo H, Xu Y, Guo C, Chen H, Wang Y, Yang Z et al. Thermodynamic analysis of packed bed thermal energy storage system. Journal of Thermal Science. 2019 Jan 3;1-15.