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On the pressure drop in Plate Heat Exchangers used as desorbers in absorption chillers

机译：关于用作吸收式制冷机中解吸器的板式换热器的压降

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摘要

The influence of the pressure drop in Plate Heat Exchangers (PHE) in the boiling temperature of LiBr-H_2O and NH_3-H_2O solutions is studied. For the NH_3-H_2O solution, the pressure drop-temperature saturation relationship estates that high pressure drops can be allowed in the solution with negligible changes in the saturation temperature, and in the PHE performance. Besides, in the case of the LiBr-H_2O solution, as the working pressure is usually very low, the analysis of the pressure drop must be taken as a main limiting parameter for the use of Plate Heat Exchangers as vapour generators. In this case, the pressure drop may considerably change the boiling temperature of the solution entering the heat exchanger and therefore a higher heating fluid temperature may be required. A guideline to design these systems is proposed.
机译：研究了板式换热器（PHE）中压降对LiBr-H_2O和NH_3-H_2O溶液沸腾温度的影响。对于NH_3-H_2O溶液，压降-温度饱和关系关系图表明，在饱和温度和PHE性能变化可忽略不计的情况下，溶液中可允许高压降。此外，在LiBr-H_2O溶液中，由于工作压力通常很低，因此必须将压降的分析作为使用板式换热器作为蒸汽发生器的主要限制参数。在这种情况下，压降会大大改变进入热交换器的溶液的沸腾温度，因此可能需要更高的加热流体温度。提出了设计这些系统的指南。

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  • 来源
    《Energy Conversion & Management》 |2011年第2期|p.1520-1525|共6页
  • 作者

    N. Garcia-Hernando; J.A. Almendros-Ibanez; G. Ruiz; M. de Vega;

  • 作者单位

    Energy System Engineering (ISE), Departamento de Ingenieria Termica y de Fluidos. Universidad Carlos 111 de Madrid, Avda. Universidad, 30, 28911 Leganes, Madrid. Spain;

    Escuela de Ingenieros Industrials de Albacete, Departamento de Mecanica Aplicada e Ingenieria de Proyectos, Universidad de Castilla La Mancha, Campus Universitario s, 02071 Albacete, Spain,Renewable Energy Research Institute, c/de la Investigation s, 02071 Albacete, Spain;

    Energy Efficiency and Renewables Department, Tecnicas Reunidas S.A., C/Arapiles No. 13, 10~a, 28015 Madrid, Spain;

    Energy System Engineering (ISE), Departamento de Ingenieria Termica y de Fluidos. Universidad Carlos 111 de Madrid, Avda. Universidad, 30, 28911 Leganes, Madrid. Spain;

  • 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

    absorption system; desorption; plate heat exchangers; pressure drop; plate exchanger;

    机译：吸收系统解吸板式换热器;压力下降;板式换热器;

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