FENG Zhenjian, ZHU Li and FENG Zhenfei. Effects of structural parameters in helical mini-channels of heat exchanger on fluid flow, heat transfer and overall performance[J]. Journal of Light Industry, 2018, 33(3): 94-100. doi: 10.3969/j.issn.2096-1553.2018.03.012
Citation:
FENG Zhenjian, ZHU Li and FENG Zhenfei. Effects of structural parameters in helical mini-channels of heat exchanger on fluid flow, heat transfer and overall performance[J]. Journal of Light Industry, 2018, 33(3): 94-100.
doi:
10.3969/j.issn.2096-1553.2018.03.012
Effects of structural parameters in helical mini-channels of heat exchanger on fluid flow, heat transfer and overall performance
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Nanning Land Resources Center of Surveying, Mapping and Geoinformation, Nanning 530021, China;
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Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China
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Corresponding author:
FENG Zhenfei,
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Received Date:
2017-10-09
Available Online:
2018-05-15
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Abstract
In order to investigate effects of structural parameters of heat exchanger on fluid flow, heat transfer and overall performance in helical mini-channels with fan cavities, the helical mini-channels with different radiuses and pitches of fan cavities were designed in present work. The fluid flow, heat transfer and overall performance characteristics in these mini-channels under different Re were studied using numerical simulation. The results showed that the fan cavities had obvious influences on the fluid flow performance in the helical mini-channel. At the range of 168<Re<2016, the flow resistance increased with the increase in the radius of fan cavity. The flow resistance descreased with the rise in the pitch of fan cavity when Re>336. But this trend was inversed when Re<336. The variations for structural parameters of fan cavity had no significant influence on heat transfer performance. Also these variations can't improved obviously the overall performance in helical mini-channel.The helical mini-channels with fan cavities were suitable for the low ranges of Re.
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Proportional views
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