400 / 2018-12-23 14:11:28

Application Research of Multi-stage Water Source Heat Pump Series Coupling System in Circulating Water Waste Heat of Thermal Power Plant

Multi-stage water source heat pump coupling; thermal power plant circulating water; waste heat utilization

全体主题 > 节能、联产、热泵

Thermal power generation is still the most important form of power generation in China. The temperature of circulating water discharged from thermal power plants is generally lower than 45 癈. How to use this part of low-grade residual heat has been our hot issue. The water source heat pump system recovers low-grade heat is an effective way to save energy and environmental protection. Usually, the water source heat pump unit can raise the temperature of the hot water supply source to about 7-10 ?C. For a single water source heat pump unit, the heating temperature can be 45-55. 癈, and the actual heating water supply temperature should be designed according to 75 癈, in order to make up for the recovery of the residual water heat of the thermal power plant by a single water source heat pump system, the defects of the heating water temperature can not be met. This paper takes the multi-stage water source heat pump series system as the research object to make the low temperature heat energy Better conversion to high-temperature heat, meet the heating requirements of users, achieve user-side heating and provide domestic water. Taking the characteristics of the water source heat pump series unit into consideration, considering the energy saving and environmental protection of the recycled water waste heat of the power plant, the technical scheme of recovering the circulating water residual heat in the thermal power plant by the multi-stage water source heat pump series coupling system is given.