燃气驱动的三级液体除湿空调系统及其特点分析

介绍了液体除湿空调系统的原理及其特点。基于分级除湿思想和能量梯级利用原则，提出了一种燃气驱动的三级液体除湿空调系统，系统由风机、除湿器、蒸发冷却器和再生器组成。除湿器采用三级液体除湿，通过对室内回风直接蒸发冷却进行全热回收，用回收的冷量冷却除湿过程，移去处理空气的潜热；蒸发冷却器由间接蒸发冷却器和直接蒸发冷却器两部分组成，前者间接冷却除湿后的空气，移去空气的显热，后者调节空气的温湿度；再牛器采用燃气驱动，实现沸腾蒸发和非沸腾蒸发结合的两效再生。该系统是一种节能环保的新型空凋系统，具有优化城市能源结构的功能。

Three-Step Liquid Desiccant Air Conditioning System Driven by Gas and Its Characteristic Analysis

Liquid Desiccant Air-conditioning Systems(LDAS)are being studied as an alternative to conventional vapor compression refrigeration systems due to their merits on energy conservation and environmental protection. The principle and characteristics of LDAS were presented. A three-step LDAS was put forward based on the idea of stepping dehumidification and the principle of energy step utilization. This system is driven by gas and consists of fan, dehumidifier, evaporative cooler and regenerator. The dehumidifier uses the liquid desiccant to remove the water vapor of supply air in three steps. In every step there is a direct evaporative cooler to cool the course of dehumidification. The evaporative cooler is a combination of indirect and direct evaporative cooling, which is used to decrease the dry-bulb temperature of the dry air after dehumidification. The regenerator driven by gas makes the weak desiccant coming from the dehumidifier to renew by boiling and non-boiling evaporation.The three-step LDAS is a new energy-efficient and environment-friendly air conditioning system, which may contribute to optimizing the structure of energy resources of China.