根据2013年的统计数据，中国约66%的能源来自煤炭，18.4%来自石油，5.8%来自天然气。烟道气的成分因燃料类型而异。在天然气锅炉等情况下，潜热占总排热量的很大比例，如果充分利用，将对节能做出很大贡献。本文介绍了一种以液体干燥剂为循环介质的开放式烟气余热回收吸收系统。建立热力学模型，模拟系统的实际运行工况。计算结果表明，该系统的热回收效率比传统的冷凝式热回收方法高59%左右，比用于天然气锅炉的电动或封闭式吸收式热泵系统高14%左右。 该系统在处理其他类型的化石燃料锅炉时也表现良好，由于潜热比例较高，效率随着烟气湿度的增加而增加。该系统在节水和大气污染物净化方面也表现良好。引文:2017年冬季会议，内华达州拉斯维加斯，会议论文

According to the statistics in 2013, about 66% of the total energy in China is provided by coal, 18.4% by petroleum and 5.8% by natural gas. The compositions of the flue gases differ according to the type of fuels. In cases such as the natural gas boilers, the latent heat occupies a large proportion of the total exhaust heat and will contribute a lot to energy saving if fully utilized. This paper introduces an open absorption system for waste heat recovery from flue gases using liquid desiccant as the cycling medium. The thermodynamic model was established to simulate the actual operation conditions of the system. The calculation results show that the heat recovery efficiency of the system is about 59% higher than that of the traditional condensing heat recovery method and is about 14% higher than the electrical or closed absorption heat pump system for natural gas boilers. The system also performs well when dealing with other type of fossil fuel boilers and the efficiency increases with the humidity ratio of the flue gas due to a higher latent heat proportion. The system also behaves well in water conservation and atmospheric pollutant purification.