摘要
大型发电机组的实际热效率并不高,许多热量被凝汽器循环冷却水带走排至大气。电厂循环冷却水的排水温度较低,属于低品位热能,直接利用的范围较狭窄。直接空冷机组是利用散热器直接进行排放,这些直接排放的热量未加利用,就被排至大气环境中,不但造成了环境的热污染,还降低了机组的热效率。通过加装热泵系统,提高了机组的运行效率,节约了相当可观的燃煤,取得了显著的经济效益。
The actual thermal efficiency of large thermal power plant is not high, a large amount of heat is discharged into the environment with the condenser circulating cooling water. The temperature of circulating cooling water drainage in power plant is relatively low. The energy of the drainage is low-grade heat energy, which has a narrow range of direct use of. Direct air cooling unit discharges directly with the radiator; the heat is discharged into the environment without being used. The emission of heat, not only causes heat pollution to the environmcnt, but also reduces the energy efficiency of thermal power plant. Through the installation of heat pump system, the operation efficiency of the power plant has been improved, a considerable amount of coal has been saved and remarkable social benefits have been achieved.
出处
《电站辅机》
2016年第1期28-32,共5页
Power Station Auxiliary Equipment
关键词
机组
直接
空冷
热泵
系统
冷却水
热能
效率
unit
direct
air-cooling
heat pump
systems
cooling water
heat
efficiency
