低温余热驱动的工业除湿系统性能研究

发布时间：2018-03-24 23:33

本文选题：余热利用　切入点：溶液除湿　出处：《工程热物理学报》2017年10期

【摘要】：针对传统冷凝除湿方法耗电量大的问题,提出一种利用低温余热的双级溶液除湿系统,余热的高温部分通过再生器将稀溶液转换成浓溶液,余热的低温部分驱动单效吸收式制冷机制冷,实现了余热的梯级利用。浓溶液在第一级除湿器完成空气的初步除湿,中间浓溶液经过吸收式制冷机降温提高吸收能力后,进入第二级除湿器对初步除湿的空气进行深度除湿。新系统与冷凝除湿系统相比,相对节电率达到96.17%,余热折合发电效率达到6.94%。通过研究双级除湿过程驱动力的匹配,发现除湿过程除湿工质与湿空气之间的表面水蒸气分压力更加匹配,除湿过程平均水蒸气分压力差比冷凝除湿过程减少20%以上。本研究提供了一种利用低温余热实现空气深度除湿的新型除湿系统流程与方案。
[Abstract]:According to the power consumption of traditional cooling dehumidification method of large amount of problems, put forward a system of two-stage liquid desiccant using low temperature waste heat, waste heat through the high temperature part of regenerator will dilute solution into a concentrated solution, the single effect absorption refrigeration driven low temperature waste heat, the heat utilization efficiency of concentrated solution. The completion of the preliminary dehumidification the air in the first grade dehumidifiers, middle concentrated solution after absorption chiller cooling to improve absorptive capacity, enter the second stage of the preliminary dehumidification air dehumidifier dehumidifying system. Compared with the depth of the new cooling dehumidification system, the relative energy saving rate of 96.17%, waste heat power generation efficiency can reach 6.94%., the equivalent of a two-stage dehumidification process driving force it is found that the surface, water vapor between the refrigerant and the desiccant dehumidification process of wet air pressure, the dehumidification process more, average water vapor pressure difference in condensation The wet process is reduced by more than 20%. This study provides a new dehumidification process and scheme to realize the deep dehumidification of air by using low temperature waste heat.

【作者单位】：中国科学院工程热物理研究所分布式冷热电联供系统北京市重点实验室;中国科学院大学;
【基金】：国家重点基础研究发展计划(973计划)(No.2014CB249202) 国家自然科学基金(No.51576191)
【分类号】：TU834.9

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