Energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant
A technology of return water temperature and heating system, applied in heating system and central heating, can solve the problems of low grade that can not be fully utilized, low heating efficiency, small temperature difference of heating pipe network, etc., and improve energy utilization rate , The effect of improving heating efficiency and reducing air extraction
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[0023] In the heat exchange station at the user end, the temperature of the water supplied by the primary heating network at 110°C passes through the water-water heat exchanger 10 and the secondary network 15 of the district heat user, and then the temperature drops to 70°C; driven by the driving heat source, the absorption heat pump Ⅰ11 extracts the heat from the return water of the primary heating network and supplies it to the secondary network 15 of the district heat users, and reduces the return water of the primary heating network from 70°C to 25°C; the return water of the primary heating network at 25°C enters the evaporator side of the compression heat pump 13 Driven by electricity, the compression heat pump 13 extracts the heat from the return water of the primary heat network, raises the temperature of the water in the condenser side from 25°C to 30°C, and returns the return water to the thermal power plant by reducing the return water of the primary heat network to 3°...
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