高效填料型除湿器新传质关联式实验研究

发布时间：2018-10-15 13:36

【摘要】：填料作为溶液除湿器的重要部件,其传质特性直接关系到整个溶液除湿空调系统性能的好坏。本文搭建了逆流填料型溶液除湿实验台,以Li Cl溶液为除湿溶液,对高比表面积波纹纤维规整填料(650 m2/m3)进行了除湿实验研究。以气液界面的水蒸气分压差为传质驱动力,获得了新的传质系数实验关联式和除湿效率实验关联式。并对该填料的除湿效果与文献中的不同填料进行对比。结果表明:该填料具有最高的单位体积传质系数,且填料的单位体积传质系数随着填料比表面积的增加而增大。传质系数实验关联式计算值与实验值相对偏差在±20%以内,除湿效率实验关联式计算值与实验值相对偏差在±15%以内。新的传质关联式可以比较精确的计算除湿器的传质性能。
[Abstract]:As an important part of the solution dehumidifier, the mass transfer characteristics of the filler are directly related to the performance of the whole solution dehumidification air conditioning system. In this paper, a countercurrent packed solution dehumidification test rig was set up. The dehumidification experiment of corrugated fiber packing (650 m2/m3) with high specific surface area was carried out using Li Cl solution as dehumidification solution. A new experimental correlation formula of mass transfer coefficient and an experimental correlation formula of dehumidification efficiency are obtained by using the vapor pressure difference at the gas-liquid interface as the driving force for mass transfer. The dehumidification effect of the filler was compared with that of different fillers in the literature. The results show that the packing has the highest mass transfer coefficient per unit volume, and the unit volume mass transfer coefficient of the filler increases with the increase of the specific surface area of the filler. The relative deviation between the calculated value and the experimental value of mass transfer coefficient is less than 卤20%, and the relative deviation between the calculated value and the experimental value is less than 卤15%. The new mass transfer correlation can accurately calculate the mass transfer performance of the dehumidifier.
【作者单位】：香港理工大学屋宇设备工程学系;
【基金】：国家自然科学基金(51306157)资助项目~~
【分类号】：TB657.2;TU83

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