In hot and humid regions, vapor-compression cooling systems impose high power demand to grid and increase peak of the load. While thermally activated cooling systems can be a sustainable solution, they are even more beneficial when driven by waste heat. In this paper, a multi-generation system including gas engine, desiccant cooling system and thermal desalination system is studied under three different weather conditions. In the desiccant system, two innovative cycles are applied in which the humidity of regeneration air is higher than conventional systems. Therefore, dew point temperature will be high enough for water condensation. The results show it can compensate for 121% of consumed water in humid areas. Moreover, thermal COP is within range of 0.61–1 in studied cities. While the cooling system uses the jacket water heat, desalination system is powered by the flue gasses. It can annually desalinate 1,122 and 1,817 m³ water by heats of the engines with powers of 33 and 55 kVA. Economic investigation shows levelized cost of cooling is within range of 1.5 to 20 US cents depending on the system size and weather conditions. Besides the water price, the difference between electricity and gas prices plays a key role in system economic feasibility.

在炎热和潮湿的地区，蒸汽压缩冷却系统对电网施加了高功率需求，并增加了负荷峰值。尽管热激活冷却系统可以是可持续的解决方案，但在废热驱动下，它们甚至更加有益。本文研究了在三种不同天气条件下的包括汽油机，干燥剂冷却系统和热脱盐系统的多代系统。在干燥剂系统中，应用了两个创新的循环，其中再生空气的湿度高于常规系统。因此，露点温度将足够高以使水冷凝。结果表明，它可以补偿潮湿地区121％的用水量。此外，在研究城市中，热COP在0.61-1范围内。冷却系统利用夹套水加热时 脱盐系统由烟气驱动。每年可以淡化1,122和1,817 m功率为33 kVA和55 kVA的发动机加热产生³水。经济研究表明，根据系统大小和天气条件，平均冷却成本在1.5至20美分之间。除水价外，电价与气价之间的差异在系统经济可行性中也起着关键作用。