TY - JOUR
T1 - Topology optimization of thermochemical material distribution in low-temperature thermochemical heat storage system
AU - Yan, W. J.
AU - Ye, H.
AU - Liu, Z. B.
AU - Tao, Y. B.
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/12
Y1 - 2025/12
N2 - Low-temperature thermochemical heat storage (TCHS) system holds significant potential for residential heating. Affected by local heat transfer and flow characteristics, the distribution of thermochemical materials (TCM) has significant effects on charging and discharging performance. In this study, distribution of TCM in low-temperature TCHS system was optimized by topology optimization method. The results show that more TCM arranged at inlet region and less TCM at outlet region enhances both charging and discharging performance. After optimization, the reaction time is reduced by 25 % and 26.92 % for discharging and charging process, respectively. Both heat transfer fluid (HTF) flow rate and pipe diameter significantly influence optimized TCM distribution. Increasing HTF inlet temperature boosts average charging rate, a temperature of 373 K is recommended to balance charging power and exergy efficiency. The system gets the optimal overall performance with thermal and exergy efficiencies of 73.89 % and 22.42 %, average heat storage and release power of 142.4 W and 132.15 W, when the radius is 1.5 cm and flow rate is 1 cm/s.
AB - Low-temperature thermochemical heat storage (TCHS) system holds significant potential for residential heating. Affected by local heat transfer and flow characteristics, the distribution of thermochemical materials (TCM) has significant effects on charging and discharging performance. In this study, distribution of TCM in low-temperature TCHS system was optimized by topology optimization method. The results show that more TCM arranged at inlet region and less TCM at outlet region enhances both charging and discharging performance. After optimization, the reaction time is reduced by 25 % and 26.92 % for discharging and charging process, respectively. Both heat transfer fluid (HTF) flow rate and pipe diameter significantly influence optimized TCM distribution. Increasing HTF inlet temperature boosts average charging rate, a temperature of 373 K is recommended to balance charging power and exergy efficiency. The system gets the optimal overall performance with thermal and exergy efficiencies of 73.89 % and 22.42 %, average heat storage and release power of 142.4 W and 132.15 W, when the radius is 1.5 cm and flow rate is 1 cm/s.
KW - Charging and discharging process
KW - Heat and mass transfer
KW - System performance analysis
KW - Thermochemical heat storage
KW - Topology optimization
UR - https://www.scopus.com/pages/publications/105014526792
U2 - 10.1016/j.icheatmasstransfer.2025.109594
DO - 10.1016/j.icheatmasstransfer.2025.109594
M3 - 文章
AN - SCOPUS:105014526792
SN - 0735-1933
VL - 169
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
M1 - 109594
ER -