Optimization of thermoelectric generator power density for cryogen cold exergy recovery

The article presents the optimization of the power density of a thermoelectric generator (TEG) operating in cryogenic temperature conditions. Optimization of TEG power density was performed as a function of TEG leg length and its effect on TEG performance. The figure of merit (ZT) of the TEG was exp...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2024-05, Vol.1301 (1), p.12169
Main Authors: Sierpowski, K J, Gizicki, W, Malecha, Z M, Chorowski, M
Format: Article
Language:English
Subjects:
Boiling
Cryogenic temperature
Exergy
Figure of merit
Numerical models
Optimization
Recovery
Thermoelectric generators
Thermoelectricity
Wall temperature
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The article presents the optimization of the power density of a thermoelectric generator (TEG) operating in cryogenic temperature conditions. Optimization of TEG power density was performed as a function of TEG leg length and its effect on TEG performance. The figure of merit (ZT) of the TEG was experimentally verified for the temperature range of a cold sink from 160 to 250 K, which corresponds to the temperature of the wall subjected to the boiling film of LNG. The numerical model proposed in the article was verified by comparison with experimental data, and then used to simulate the operation of the TEG at a cold sink temperature of 80 K corresponding to the wall temperature in the process of LH2 regasification. The obtained results showed that the optimal length of TEG legs is less than 10 mm and depends on the boiling and heat transfer regime. The results of the presented research can be used to improve the effectivity of cold exergy recovery from cryogenic systems.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1301/1/012169