TY - JOUR
T1 - Performance analysis of an integrated energy storage and energy upgrade thermochemical solid-gas sorption system for seasonal storage of solar thermal energy
AU - Li, Tingxian
AU - Wang, Ruzhu
AU - Kiplagat, Jeremiah K.
AU - Kang, Yong Tae
N1 - Funding Information:
This work was supported by the Natural Science Foundation of China under the contract No. 51276211 and the International joint project of the Natural Science Foundation of China under the contract No. 51020105010 . The authors would like to thank the financial support from the National Research Foundation (NRF) of Korea under the grant No. 20100029120 .
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2013/2/1
Y1 - 2013/2/1
N2 - An innovative dual-mode thermochemical sorption energy storage method is proposed for seasonal storage of solar thermal energy with little heat losses. During the charging phase in summer, solar thermal energy is stored in form of chemical bonds resulting from thermochemical decomposition process, which enables the stored energy to be kept several months at ambient temperature. During the discharging phase in winter, the stored thermal energy is released in the form of chemical reaction heat resulting from thermochemical synthesis process. Thermodynamic analysis showed that the advanced dual-mode thermochemical sorption energy storage is an effective method for the long-term seasonal storage of solar energy. A coefficient of performance (COPh) of 0.6 and energy density higher than 1000 kJ/kg of salt can be attained from the proposed system. During the discharging phase at low ambient temperatures, the stored thermal energy can be upgraded by use of a solid-gas thermochemical sorption heat transformer cycle. The proposed thermochemical sorption energy storage has distinct advantages over the conventional sensible heat and latent heat storage, such as higher energy storage density, little heat losses, integrated energy storage and energy upgrade, and thus it can contribute to improve the seasonal utilization of solar thermal energy.
AB - An innovative dual-mode thermochemical sorption energy storage method is proposed for seasonal storage of solar thermal energy with little heat losses. During the charging phase in summer, solar thermal energy is stored in form of chemical bonds resulting from thermochemical decomposition process, which enables the stored energy to be kept several months at ambient temperature. During the discharging phase in winter, the stored thermal energy is released in the form of chemical reaction heat resulting from thermochemical synthesis process. Thermodynamic analysis showed that the advanced dual-mode thermochemical sorption energy storage is an effective method for the long-term seasonal storage of solar energy. A coefficient of performance (COPh) of 0.6 and energy density higher than 1000 kJ/kg of salt can be attained from the proposed system. During the discharging phase at low ambient temperatures, the stored thermal energy can be upgraded by use of a solid-gas thermochemical sorption heat transformer cycle. The proposed thermochemical sorption energy storage has distinct advantages over the conventional sensible heat and latent heat storage, such as higher energy storage density, little heat losses, integrated energy storage and energy upgrade, and thus it can contribute to improve the seasonal utilization of solar thermal energy.
KW - Energy upgrade
KW - Internal heat recovery
KW - Seasonal energy storage
KW - Solar energy
KW - Thermochemical process
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U2 - 10.1016/j.energy.2012.11.043
DO - 10.1016/j.energy.2012.11.043
M3 - Article
AN - SCOPUS:84873196109
SN - 0360-5442
VL - 50
SP - 454
EP - 467
JO - Energy
JF - Energy
IS - 1
ER -