Design controllable TPMS structures for solar thermal applications: A pore-scale vs. volume-averaged modeling approach

Xu，Da1,2,3; Lin，Meng2,3

2023-02-01

10.1016/j.ijheatmasstransfer.2022.123625

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   Impact Factor & Quartile

0017-9310

The performance of solar energy conversion processes is largely dependent on the porous material which absorbs the irradiation, provides reaction sites, and facilitates mass transport. Porous media is the key energy conversion media in solar thermal/thermochemical conversion devices. The conventional way of fabricating porous structure shows limited flexibility in varying local morphology for better transport properties. The material structure optimization is hindered by the lack of methodology for precisely tuning material structure and lagged modeling framework to assess the structure-property relationship of designed materials. This structure-property relation can be further linked to the final conversion performance of receivers/reactors using such material. The triply periodic minimum surface (TPMS) structures are promising candidates due to their flexible lattice structure design, well-defined analytical expression, and easiness in anisotropic feature introduction. Moreover, the recent development of direct ceramic 3D printing technologies enables a unique route for the fabrication of gradient functional materials with complex structures. In this study, we focused on the quantification of TPMS structures’ transport properties with a case study to show their impact on the solar thermal conversion behavior. The identified effective properties were then used in a volume-averaged multi-physics model for the evaluation of an FKS structure under direct solar illuminations. This modeling framework offers a highfidelity numerical tool for the quantification of the link between porous material structure and their effective properties in solar thermal/thermochemical conversion applications.

Porous media Solar energy Thermochemical conversion Transport properties Triply periodic minimum surface

English

Corresponding

National Natural Science Foundation of China[52006097];

ENGINEERING

2-s2.0-85141962752

Scopus

1.Harbin Institute of Technology,Harbin,150001,China
2.Solar Energy Conversion and Utilization Laboratory,Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.SUSTech Energy Institute for Carbon Neutrality,Southern University of Science and Technology,Shenzhen,518055,China

Xu，Da,Lin，Meng. Design controllable TPMS structures for solar thermal applications: A pore-scale vs. volume-averaged modeling approach[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2023,201.

Xu，Da,&Lin，Meng.(2023).Design controllable TPMS structures for solar thermal applications: A pore-scale vs. volume-averaged modeling approach.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,201.

Xu，Da,et al."Design controllable TPMS structures for solar thermal applications: A pore-scale vs. volume-averaged modeling approach".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 201(2023).