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.
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