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进水温度对新型复合气提降膜蒸发器性能的影响
  • 期刊名称：化工学报
  • 时间：0
  • 页码：87-92
  • 语言：中文
  • 分类：TK124[动力工程及工程热物理—工程热物理;动力工程及工程热物理—热能工程]
  • 作者机构：[1]上海交通大学制冷与低温工程研究所
  • 相关基金：国家自然科学基金重点项目(50736004)~~
  • 相关项目：低品位余热高效利用的多效双重吸附制冷研究
作者： 夏再忠|王如竹|何曙|
关键词： 降膜蒸发, 气提效应, 水力特性, 传热传质性能
中文摘要：

就提出的基于气提效应的新型复合降膜蒸发器展开了深入研究,讨论了进水温度发生变化时,该复合降膜蒸发器的水力特性和传热传质性能的变化情况。研究表明:随着进水温度的增加,输送单元的输送液体流量和输送高度比(泵送高度与驱动吸程之比)均得到提高;而蒸发换热单元的降落液膜厚度则随进水温度的增加而减薄,从而使得传热性能增强;且随着进水温度的增加,其对传热性能的提高逐渐减弱。在相同的输送流量下,进水温度从30℃增加到90℃时,其传热系数提高66.8%～69.3%。

同期刊论文项目
低品位余热高效利用的多效双重吸附制冷研究
期刊论文 63 会议论文 28 专利 12
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