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Flow boiling in constructal tree-shaped minichannel network

机译：结构树形微通道网络中的流沸腾

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摘要

Flow boiling in constructal tree-shaped minichannel network with an inlet diameter of 4 mm is numerically investigated using a one-dimensional model, taking into consideration the minor losses at junctions. The pumping power requirement, pressure drop, temperature uniformity and coefficient of performance of the constructal tree-shaped minichannel network are all evaluated and compared with those of the corresponding traditional serpentine channel, and the fluid stream undergoes a phase change from saturated liquid to saturated vapor. The effects of the length dimension and top view area (i.e. the path length) on saturated gas-liquid two-phase flow boiling heat transfer in tree-shaped minichannel networks are all analyzed and discussed. The results indicated that, the tree-shaped network configured with length dimension of two is able to maximum flow access; the path length plays a significant role in the determination of flow boiling in tree-shaped minichannel networks. In particular, compared to the traditional serpentine channel, flow boiling in constructal tree-shaped minichannnel network possesses less pressure drop, lower pumping power requirement, better temperature uniformity and higher coefficient of performance (COP).
机译：考虑到连接处的微小损失，使用一维模型对入口直径为4 mm的结构树形微通道网络中的沸腾进行了数值研究。评估了构造树形微通道网络的泵浦功率要求，压降，温度均匀性和性能系数，并将其与相应的传统蛇形通道的泵浦功率需求，压降，温度均匀性和性能系数进行了比较，并且流体流经历了从饱和液体到饱和蒸汽的相变。分析并讨论了长度尺寸和顶视图面积（即路径长度）对树形微通道网络中饱和气液两相流沸腾传热的影响。结果表明，长度为2的树形网络能够最大程度地增加流量访问。路径长度在确定树形微通道网络中的流沸腾中起着重要作用。特别是，与传统的蛇形通道相比，结构树形微通道网络中的流沸腾具有更低的压降，更低的泵送功率要求，更好的温度均匀性和更高的性能系数（COP）。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第3期|p.202-209|共8页
  • 作者

    Chengbin Zhang; Yongping Chen; Rui Wu; Mingheng Shi;

  • 作者单位

    School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, PR China;

    School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, PR China;

    School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, PR China;

    School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    constructal; tree-shaped; minichannel; flow boiling;

    机译：建设性的树形小频道流动沸腾;

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