Designing the structural and operational parameters of a single long NiTi tube compressive elastocaloric cooler by lumped analysis
- 1School of Mechanical Engineering, Hebei University of Science and Technology 1 , Shijiazhuang 050018,
- 2Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology 2 , Clear Water Bay, Hong Kong,
- 3Department of Physics, Southern University of Science and Technology 3 , Shenzhen, Guangdong,
Abstract
Elastocaloric cooling is a promising alternate for vapor-compression technology due to its high specific cooling power, long fatigue life, zero global warming substance emission, and relatively low cost. A convenient, efficient, and accurate modelling for elastocaloric cooling cycles is of great significance for the designation and optimization of elastocaloric solid-state coolers. In this article, we developed a heat transfer model using lumped analysis method for performance evaluation of elastocaloric coolers. The analytical solution for the coupled volume-averaged temperatures of the NiTi shape memory alloy and heat transfer fluid during an elastocaloric cooling cycle was obtained, which was used to calculate the elastocaloric cooling performance, including the temperature span/lift, specific cooling power, and coefficient of performance. The lumped heat transfer model was validated by the experimental data of temperature-time relationship and specific cooling power for our single long NiTi tube compressive elastocaloric cooler. We analyzed the effects of heat transfer fluid properties, structural parameters, and operation parameters on the cooling performance of our elastocaloric cooler using the lumped heat transfer model. According to current knowledge and experience, we analyzed the coupling among fundamental factors affecting the elastocaloric cooling performance, and established a flow chart for the designation of elastocaloric coolers. The results in this article not only can be used in the modelling of elastocaloric coolers, but also have the potential to be applied in other caloric cooling technologies.
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BibTeX
@article{程2026designing,
title = {{Designing the structural and operational parameters of a single long NiTi tube compressive elastocaloric cooler by lumped analysis}},
author = {思远 程 and Zhaoqi Wu and Shuaihong Fan and Zikuo Wu and Xueshi Li and Jiongjiong Zhang},
journal = {AIP Advances},
year = {2026},
month = jul,
doi = {10.1063/5.0326896},
url = {https://doi.org/10.1063/5.0326896},
note = {CC BY},
}
RIS
TY - JOUR
TI - Designing the structural and operational parameters of a single long NiTi tube compressive elastocaloric cooler by lumped analysis
AU - 思远 程
AU - Zhaoqi Wu
AU - Shuaihong Fan
AU - Zikuo Wu
AU - Xueshi Li
AU - Jiongjiong Zhang
PY - 2026
DA - 2026/07/01
JO - AIP Advances
DO - 10.1063/5.0326896
UR - https://doi.org/10.1063/5.0326896
AB - Elastocaloric cooling is a promising alternate for vapor-compression technology due to its high specific cooling power, long fatigue life, zero global warming substance emission, and relatively low cost. A convenient, efficient, and accurate modelling for elastocaloric cooling cycles is of great significance for the designation and optimization of elastocaloric solid-state coolers. In this article, we developed a heat transfer model using lumped analysis method for performance evaluation of elastocaloric coolers. The analytical solution for the coupled volume-averaged temperatures of the NiTi shape memory alloy and heat transfer fluid during an elastocaloric cooling cycle was obtained, which was used to calculate the elastocaloric cooling performance, including the temperature span/lift, specific cooling power, and coefficient of performance. The lumped heat transfer model was validated by the experimental data of temperature-time relationship and specific cooling power for our single long NiTi tube compressive elastocaloric cooler. We analyzed the effects of heat transfer fluid properties, structural parameters, and operation parameters on the cooling performance of our elastocaloric cooler using the lumped heat transfer model. According to current knowledge and experience, we analyzed the coupling among fundamental factors affecting the elastocaloric cooling performance, and established a flow chart for the designation of elastocaloric coolers. The results in this article not only can be used in the modelling of elastocaloric coolers, but also have the potential to be applied in other caloric cooling technologies.
SN - 2158-3226
ER -