摘要
在凝汽式汽轮发电机组中,汽轮机乏汽余热被循环冷却水带走,造成巨大的能源浪费,而冷源损失难以回收利用是因为其热品位较低。吸收式热泵恰能解决这个问题,以高温热源驱动,把低温热源的热量提高到中温,从而提高系统能源的利用效率。且吸收式热泵常以溴化锂溶液作为工质,对环境没有污染,不破坏大气臭氧层,而且具有高效节能的特点。通过一个实际案例,探讨了吸收式热泵回收利用高背压循环水热量供热的技术可行性。
In a condensing turbine generator set,the exhaust heat of exhaust steam of a steam turbine is taken away by circulating cooling water, resulting in huge energy waste, and the cold source loss is difficult to recycle because of its low thermal grade. The absorption heat pump can prevent this problem ,which is driven by high temperature heat source to raise the heat of low temperature heat source to medium temperature, thus improving the utilization efficiency of system energy. The absorption heat pump often takes lithium bromide solution as working fluid, neither pollutes the environment, nor destroys the atmosphere ozonosphere, and has high-efficiency energy-saving characteristic. Through a practical case, this paper discusses the technological feasibility of heating by recovering heat from high back pressure circulating water by absorption heat pump.
出处
《国网技术学院学报》
2017年第5期44-47,共4页
Journal of State Grid Technology College
关键词
热泵
循环水
余热
供热
heat pump, circulating water, exhaust, heat heat supply
