Novel Heat Exchangers with Cross-Runners for Air and Water Cooling
AbstractThis work experimentally investigated the pressure drops and heat transfer characteristics of cross-runner heat exchangers. Three kinds of configurations employed were, (1) the aluminum alloy heat exchanger with a staggered rectangular-fin array (Model A); (2) the aluminum alloy heat exchanger with a staggered round pin fin array (Model B); and (3) the copper heat exchanger sintered by multiple copper sheets with rectangular punched holes forming cross-runners (Model C). The results indicate that increasing heat-transfer area (AHT) and decreasing porosity (ε) of the heat exchanger significantly enhanced the heat transfer capacity of the cross-runner heat exchanger, but also increased flow resistance. At the same pumping power for the air-cooled heat transfer experiment, the Nu of Model C was 2.27 and 1.67 times that of Models A and B respectively. Additionally, this study proposed the semi-empirical correlations of dimensionless pressure drop and Nusselt number in terms of Reynolds number for air-cooling measurements. Finally, the feasibility of using the present cross-runner heat exchangers for an instantaneous water heater was also investigated according to the water-cooled heat transfer experiment and the results showed great commercial potential of Model C. View Full-Text
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Jeng, T.-M.; Tzeng, S.-C.; Tseng, C.-W.; Chang, C.-H.; Liu, Y.-C.; Peng, H.-Y.; Chen, H.-H. Novel Heat Exchangers with Cross-Runners for Air and Water Cooling. Inventions 2016, 1, 10.
Jeng T-M, Tzeng S-C, Tseng C-W, Chang C-H, Liu Y-C, Peng H-Y, Chen H-H. Novel Heat Exchangers with Cross-Runners for Air and Water Cooling. Inventions. 2016; 1(2):10.Chicago/Turabian Style
Jeng, Tzer-Ming; Tzeng, Sheng-Chung; Tseng, Ching-Wen; Chang, Chia-Hung; Liu, Yi-Cheng; Peng, Hsiao-Yun; Chen, Huang-Han. 2016. "Novel Heat Exchangers with Cross-Runners for Air and Water Cooling." Inventions 1, no. 2: 10.
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