Thermochemical heat storage performances of fluidized black CaCO3 pellets under direct concentrated solar irradiation

Hangbin Zheng; Xianglei Liu; Yimin Xuan; Chao Song; Dachuan Liu; Qibin Zhu; Zhonghui Zhu; Ke Gao; Yongliang Li; Yulong Ding

doi:10.1016/j.renene.2021.07.026

Thermochemical heat storage performances of fluidized black CaCO₃ pellets under direct concentrated solar irradiation

Hangbin Zheng, Xianglei Liu^*, Yimin Xuan, Chao Song, Dachuan Liu, Qibin Zhu, Zhonghui Zhu, Ke Gao, Yongliang Li, Yulong Ding

^*Corresponding author for this work

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Conventional solar thermochemical heat storage based on indirect surface-heating usually suffers from high heat losses and low solar-chemical efficiency. Here, a different solar thermochemical heat storage system based on direct solar illumination on fluidized black CaCO₃ pellets is proposed. A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model considering irradiation ray tracing, granular flow, heat and mass transfer, and chemical reaction, is built. Black CaCO₃ pellets are fabricated via a facile template mixing method, and the solar absorptance is enhanced to 63.9% from 27.9% of traditional pure CaCO₃. Effects of gas velocity and irradiative flux on thermochemical heat storage performance in a fluidized volumetric bed are investigated by incorporating measured kinetic and solar absorptance properties of designed black CaCO₃ pellets. The peak solar-chemical efficiency reaches a value higher than 43% benefiting from enhanced solar absorptance, higher gas velocity and irradiative flux. This work guides the design of the high-efficiency direct solar thermochemical heat storage system.

Original language	English
Pages (from-to)	1353-1369
Number of pages	17
Journal	Renewable Energy
Volume	178
Early online date	6 Jul 2021
DOIs	https://doi.org/10.1016/j.renene.2021.07.026
Publication status	Published - Nov 2021

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 51820105010 , 52076106 , and 52111530136 ). We also wants to thank the support from Natural Science Foundation of Jiangsu Province (No. BK20202008 ) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX21_0210 ).

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

Calcium carbonate
Direct irradiation
Fluidized bed
Full-spectrum
Thermochemical heat storage

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.renene.2021.07.026Licence: None: All rights reserved

Cite this

@article{51e9a503da2844689f036fc3aaae093f,

title = "Thermochemical heat storage performances of fluidized black CaCO3 pellets under direct concentrated solar irradiation",

abstract = "Conventional solar thermochemical heat storage based on indirect surface-heating usually suffers from high heat losses and low solar-chemical efficiency. Here, a different solar thermochemical heat storage system based on direct solar illumination on fluidized black CaCO3 pellets is proposed. A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model considering irradiation ray tracing, granular flow, heat and mass transfer, and chemical reaction, is built. Black CaCO3 pellets are fabricated via a facile template mixing method, and the solar absorptance is enhanced to 63.9% from 27.9% of traditional pure CaCO3. Effects of gas velocity and irradiative flux on thermochemical heat storage performance in a fluidized volumetric bed are investigated by incorporating measured kinetic and solar absorptance properties of designed black CaCO3 pellets. The peak solar-chemical efficiency reaches a value higher than 43% benefiting from enhanced solar absorptance, higher gas velocity and irradiative flux. This work guides the design of the high-efficiency direct solar thermochemical heat storage system.",

keywords = "Calcium carbonate, Direct irradiation, Fluidized bed, Full-spectrum, Thermochemical heat storage",

author = "Hangbin Zheng and Xianglei Liu and Yimin Xuan and Chao Song and Dachuan Liu and Qibin Zhu and Zhonghui Zhu and Ke Gao and Yongliang Li and Yulong Ding",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (No. 51820105010 , 52076106 , and 52111530136 ). We also wants to thank the support from Natural Science Foundation of Jiangsu Province (No. BK20202008 ) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX21_0210 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

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doi = "10.1016/j.renene.2021.07.026",

language = "English",

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TY - JOUR

T1 - Thermochemical heat storage performances of fluidized black CaCO3 pellets under direct concentrated solar irradiation

AU - Zheng, Hangbin

AU - Liu, Xianglei

AU - Xuan, Yimin

AU - Song, Chao

AU - Liu, Dachuan

AU - Zhu, Qibin

AU - Zhu, Zhonghui

AU - Gao, Ke

AU - Li, Yongliang

AU - Ding, Yulong

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 51820105010 , 52076106 , and 52111530136 ). We also wants to thank the support from Natural Science Foundation of Jiangsu Province (No. BK20202008 ) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX21_0210 ). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/11

Y1 - 2021/11

N2 - Conventional solar thermochemical heat storage based on indirect surface-heating usually suffers from high heat losses and low solar-chemical efficiency. Here, a different solar thermochemical heat storage system based on direct solar illumination on fluidized black CaCO3 pellets is proposed. A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model considering irradiation ray tracing, granular flow, heat and mass transfer, and chemical reaction, is built. Black CaCO3 pellets are fabricated via a facile template mixing method, and the solar absorptance is enhanced to 63.9% from 27.9% of traditional pure CaCO3. Effects of gas velocity and irradiative flux on thermochemical heat storage performance in a fluidized volumetric bed are investigated by incorporating measured kinetic and solar absorptance properties of designed black CaCO3 pellets. The peak solar-chemical efficiency reaches a value higher than 43% benefiting from enhanced solar absorptance, higher gas velocity and irradiative flux. This work guides the design of the high-efficiency direct solar thermochemical heat storage system.

AB - Conventional solar thermochemical heat storage based on indirect surface-heating usually suffers from high heat losses and low solar-chemical efficiency. Here, a different solar thermochemical heat storage system based on direct solar illumination on fluidized black CaCO3 pellets is proposed. A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model considering irradiation ray tracing, granular flow, heat and mass transfer, and chemical reaction, is built. Black CaCO3 pellets are fabricated via a facile template mixing method, and the solar absorptance is enhanced to 63.9% from 27.9% of traditional pure CaCO3. Effects of gas velocity and irradiative flux on thermochemical heat storage performance in a fluidized volumetric bed are investigated by incorporating measured kinetic and solar absorptance properties of designed black CaCO3 pellets. The peak solar-chemical efficiency reaches a value higher than 43% benefiting from enhanced solar absorptance, higher gas velocity and irradiative flux. This work guides the design of the high-efficiency direct solar thermochemical heat storage system.

KW - Calcium carbonate

KW - Direct irradiation

KW - Fluidized bed

KW - Full-spectrum

KW - Thermochemical heat storage

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