烟气余热回收复合制冷系统的可行性研究

Feasibility Study on Flue Gas Waste Heat Recovery Hybrid Refrigeration System

基于工业余热回收,提出一种"热水型和蒸汽型吸收式复合制冷系统"。通过对某电厂的余热进行回收,利用该复合系统对数据中心供冷,并与纯蒸汽系统进行对比。从节能性方面,对复合系统冷冻水供回水温度在7/12℃和12/18℃下的能耗进行分析,得出后者比前者节能6.5%,且该复合系统全年可节省2.3×10~7Nm^3天然气。环保性方面,烟气的排烟温度最低温度降到39.1℃,最高温度降到49.2℃,完全高于烟气的露点温度58.7℃,可以减少烟气的白羽现象,对环境保护具有一定效果。

Based on industrial waste heat recovery, this paper proposes a hot-water and steam type absorption composite system. Cooling the data center by recovering the waste heat from a power plant, and compare it with the pure steam system. From the aspect of energy saving, the energy consumption of the chilled water supply and return water in this Hybrid system at 7/12℃ and 12/18℃ was analyzed and compared. Found that the latter is 6.5% more energy efficient than the former, and the 2.3×10~7 Nm^3 natural gas is saved annually. From the aspect of environment protection, the flue gas exhaust temperature can be reduced to the lowest temperature of 39.1℃, the maximum temperature dropped to 49.2℃, completely higher than the flue gas dew point temperature 58.7℃. Reduced the white plume of the flue gas, it has a certain effect on environmental protection.