王宝玉, 周崇波. 热泵技术回收火电厂循环水余热的研究[J]. 现代电力, 2011, 28(4): 73-77.
引用本文: 王宝玉, 周崇波. 热泵技术回收火电厂循环水余热的研究[J]. 现代电力, 2011, 28(4): 73-77.
WANG Baoyu, ZHOU Chongbo. Study on the Heat Pump Technique to Reclaim Circulating Water Waste Heat in Thermal Power Plant[J]. Modern Electric Power, 2011, 28(4): 73-77.
Citation: WANG Baoyu, ZHOU Chongbo. Study on the Heat Pump Technique to Reclaim Circulating Water Waste Heat in Thermal Power Plant[J]. Modern Electric Power, 2011, 28(4): 73-77.

热泵技术回收火电厂循环水余热的研究

Study on the Heat Pump Technique to Reclaim Circulating Water Waste Heat in Thermal Power Plant

  • 摘要: 热泵是利用一部分高质能从低位热源中吸取一部分热量, 并把这两部分能量一起输送到需要较高温度的环境或介质的设备。火电厂循环水中存在大量余热, 利用热泵技术将有效回收这部分热量用于冬季供暖或常年加热凝结水。对热泵技术回收火电厂排汽潜热及循环水余热的5种方式进行综合阐述, 同时根据热泵系统的冷凝器取代低压加热器的循环方式, 以3台额定负荷分别为200MW、300MW、600MW机组为例, 进行了节能分析, 结果表明, 利用热泵技术回收火电厂循环水余热具有节能、环保双重效果, 且机组负荷越大相应的节能更显著。

     

    Abstract: Heat pump is the device which can transform low grade heat energy into high grade heat energy. There is a lot of waste heat from circulating cooling water in thermal power plants, the heat pump has the ability to recover the waste heat to provide hot water or preheat the condensate. The five schemes of using circulating water or turbine exhaust steam as heat resource were introduced, then three generating units with the rating loads of 200MW, 300MW and 600MW were selected as examples for analysis in aspects of heat recovery in exhaust steam latent and circulating water. Energy conservation is analyzed by the scheme of replacing the low pressure heaters condenser. The results showed the heat pump technology have the double effects on energy saving and environmental protection, and the higher working load, the more distinct effects of energy saving.

     

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