某电厂溴化锂机冷热联供集成应用技术

Application of Combined Heating and Cooling Integrated Technology with Lithium Bromide Chiller in a Power Plant

对于火电厂厂内建筑的冷热联供系统,供冷(热)工况通常采用独立系统,存在设备管路利用效率低,综合能耗高等问题。采用溴化锂双工况热泵机组,对制冷、制热工况下的设备管路系统进行集成优化设计,使用一套系统满足两种工况需求,且冬季可以吸收利用电厂辅机冷却水余热。通过控制电动阀开关、辅机启停等实现冷/热工况的切换,大大提高设备管路系统的使用效率和自动化水平。与常规方案进行技术经济对比,表明其结构精简、功能完善、投资运行费用较低。

Using lithium bromide dual-operation heat pump unit, the combined heating and cooling is achieved with low-grade steam resources in power plant, which can supply for the power plant and the surrounding area centralized cooling and heating. Integrated design of piping system, shared main and auxiliary equipment and piping systems under cooling and heating conditions, electric switch valves can achieve automatic control of cooling and heating conditions. It has simple structure, complete functions and low investment cost. Taking the concrete project as an example, the technical and economic comparison is carded out, which shows that the steam consumption of the system is less, the electric load is small, the economic benefit and energy saving effect are obvious.