Heating system with great temperature difference and low temperature radiation

Abstract

The invention discloses a heating system with great temperature difference and low temperature radiation. The heating system comprises a first plate-type heat exchanger, a second plate-type heat exchanger, a capillary radiation tail end system and a heat pump unit; the high temperature end of the first plate-type heat exchanger is connected with a heating steam extraction turbine of a thermal power plant; the lower temperature end water outlet of the first plate-type heat exchanger is connected with the high temperature end water inlet of the second plate-type heat exchanger through a water inlet pipe; the low temperature end water outlet of the second plate-type heat exchanger is connected with a water supply pipe of the capillary radiation tail end system; the low temperature end water return opening of the second plate-type heat exchanger is connected with a water return pipe of the capillary radiation tail end system; the high temperature end water outlet of the second plate-type heat exchanger is connected with the water inlet of the heat pump unit through a first water return pipe; the water outlet of the heat pump unit is connected with the low temperature end water inlet of the first plate-type heat exchanger through a second water return pipe; and water pumps are respectively arranged on the water inlet pipe, the first water return pipe and the second water return pipe. The heating system with great temperature difference and low temperature radiation provided by the invention has the advantages that the temperature difference between supplied water and return water is great, the heat energy utilization ratio of circulating water is high, the pipe network flow rate is reduced under the condition of invariant heat supply area, and the electricity consumption is reduced.

Description

technical field [0001] The invention relates to a heating system, in particular to a low-temperature radiation heating system. Background technique [0002] In the existing heating system of thermal power plants, the high-temperature water from the power plant enters the convection radiator through the pipeline, and the temperature drops to about 70°C after being heated by the radiator. ℃ and then proceed to the next heating cycle. In this heating mode, due to the small temperature difference between the supply and return water of the pipe network, the utilization rate of heat energy is low, the heating area of ​​the same pipe network is small, and the energy consumption of heat supply is large; Utilization is directly discharged into the atmosphere, which not only causes energy waste but also causes thermal pollution to the atmosphere due to waste heat discharge. Contents of the invention [0003] The object of the present invention is to provide a low-temperature radia...

AI Technical Summary

Problems solved by technology

In this heating mode, due to the small temperature difference between the supply and return water of the pipe network, the utilization rate of heat energy is low, the heating area of ​​the same pipe network is small, and the energy consumption of heat supply is large; Utilization is directly discharged into the atmosphere, which not only causes waste of energy, but also causes heat pollution to the atmosphere.

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