论文部分内容阅读
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。
Aiming at the problem of large power consumption of traditional condensation and dehumidification methods, a two-stage solution dehumidification system using low temperature waste heat is proposed. The high temperature part of the residual heat is converted into a concentrated solution by a regenerator, and the low temperature part of the residual heat drives the single effect absorption refrigeration Cold mechanism, to achieve the use of waste heat cascade. Concentrated solution in the first stage of the dehumidifier to complete the initial air dehumidification, the middle of the concentrated solution through the absorption chiller to enhance the absorption capacity, enter the second dehumidifier to the initial dehumidification of air depth dehumidification. The new system and condensing dehumidification system, the relative saving rate reached 96.17%, waste heat conversion efficiency reached 6.94%. Through the study of the driving force matching in the two-stage dehumidification process, it is found that the surface water vapor partial pressure between the dehumidifying medium and the humid air is more matched, and the average water vapor partial pressure difference in the dehumidification process is reduced by more than 20% compared with the condensation dehumidification process. This study provides a new type of dehumidification system flow and scheme to achieve deep dehumidification of air with low temperature waste heat.