...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy and Buildings >Experimental and theoretical investigation of a novel full-open absorption heat pump applied to district heating by recovering waste heat of flue gas
【24h】

Experimental and theoretical investigation of a novel full-open absorption heat pump applied to district heating by recovering waste heat of flue gas

机译：一种新型全开式吸收式热泵的烟气余热回收利用实验与理论研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The industrial exhaust flue gas contains tremendous waste heat that cannot be efficiently recovered by conventional condensing heat exchanger. This paper proposes a novel full-open absorption heat pump for the total heat recovery of flue gas. The recovered heat is used for district heating. By applying direct-contact heat and mass transfer without solid transfer interfaces, the novel system can save considerable metallic tube or plate materials and therefore the initial investment can be reduced substantially. A prototype full-open absorption heat pump is developed and tested, achieving the COP (coefficient of performance) of 1.621 and the exit flue gas dew point of 36.2 degrees C at most. A detailed theoretical model in Eulerian-Lagrangian formulation is established, involving in conjugate heat and mass transfer and particle dynamics. The numerical simulation agrees well with the experiment results. On the basis of the validated model, three critical parameters, including excess air coefficient of the burner, moisture content of the objective flue gas and return water temperature of the district heating network, are selected to study their effects on system performances. As a controlled variable, especially, the excess air coefficient plays an important role by influencing the regeneration of the liquid absorbent in the generator. The full-open absorption heat pump outperforms the condensing heat exchanger by 19.7-178.1% in heat recovery capacity as the return water temperature increases from 40 to 55 degrees C. (C) 2018 Elsevier B.V. All rights reserved.
机译：工业废气中含有大量的废热，这些废热不能通过常规的冷凝热交换器有效地回收。本文提出了一种用于烟气总热量回收的新型全开式吸收式热泵。回收的热量用于区域供热。通过在没有固体传递界面的情况下进行直接接触的传热和传质，该新型系统可以节省大量的金属管或板材，因此可以大大减少初始投资。开发并测试了原型全开式吸收式热泵，其COP（性能系数）为1.621，出口烟气露点最高为36.2摄氏度。建立了欧拉-拉格朗日公式的详细理论模型，涉及共轭传热和传质以及粒子动力学。数值模拟与实验结果吻合良好。在验证的模型的基础上，选择了三个关键参数，包括燃烧器的空气系数，目标烟道气的水分含量和区域供热网络的回水温度，以研究它们对系统性能的影响。作为控制变量，尤其是过量空气系数通过影响发生器中液体吸收剂的再生而起重要作用。当回水温度从40摄氏度升高到55摄氏度时，全开式吸收式热泵的热回收能力比冷凝式热交换器高19.7-178.1％。（C）2018 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号