Comprehensive thermal-hydraulic performance and thermoelectric conversion efficiency of bionic battery waste heat recovery system. (April 2022)

• Record Type: Journal Article
• Authors: Tu, Jianglin; Qi, Cong; Zhang, Shunli; Tang, Zhibo
• Is Part Of: Journal of energy storage. Volume 48(2022)
• Publication Date: 2022-04
• Subjects: Nanofluids -- Battery waste heat recovery -- Heat transfer enhancement -- Thermoelectric generation; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2022.104039
• Languages: English
• ISSNs: 2352-152X

Abstract

Highlights: Different strengthening structures applied to battery waste heat recovery system. Comprehensive evaluation index is adopted to analyze the heat exchange module. The heat exchange module is coupled with the power generation module. Thermoelectric conversion efficiency is studied. Abstract: To recover battery waste heat, the influence of different groove arrangement (symmetrical and staggered), groove depths ( H = 1, 2 and 3 mm) and nanofluids mass fractions ( ω = 0.0–0.5%) on the heat transfer performance and power generation characteristics of the battery waste heat recovery device were studied by experiments. The innovation of this paper is: replacing the traditional heat exchange working fluid with a new type of heat exchange working fluid; designing grooves of different shapes based on a sinusoidal curve, and studying the influence of different structural parameters on the thermal-hydraulic performance and power generation characteristics of the battery waste heat recovery device. The experimental results showed that when the mass fraction is 0.5%, the groove depth is 2 mm and the groove arrangement is staggered, the thermal-hydraulic performance and power generation characteristics of the waste heat recovery device are the best. Compared with symmetrical arrangement, the Nusselt number and power generation efficiency of staggered grooves are increased by 1.24 and 5.98% at most. Graphical abstract: Image, graphical abstract