Recirculated water low-level regenerated energy heating system of cooling column in thermal plant and refrigeration plant

Abstract

The invention discloses a circulation water low-level renewable energy heating system of the cooling towers in thermal power plants and refrigeration enterprises; the heat energy is extracted from themiddle or lower-level renewable energy by a thermal pump set; the temperature of the heat-supply once side water-supply reaches approximately 60 DEG C. the low-level renewal energy heating system canoperate efficiently, stably and economically. The low quality heat energy is converted into high quality heat energy on the premise of having no change on the enterprise device in operation; the highquality heat energy is outputted by a heat conveying device. The heating system is composed of a water source thermal pump 10, a renewable energy collecting device 9 and a heating device 11; the water source thermal pump is a closed circulation pipeline with heat exchange medium and composed of the serial connection of an evaporator 4, a compressor 5, a condenser 6 and an expansion valve 3; the renewable energy collecting device is constructed that a cooling water circulation water pump 1 is connected with a circulation water outlet pipeline of a steam condenser; the pressurized low quality hot water is connected with the water inlet of the water source thermal pump 10 through an electronic valve 2; the water outlet of the water source thermal pump 10 is connected with a water mixer 8 through a pipeline; the heating device 11 adopts the radiator group 12 of the heat consumer to construct the circulation pipe network through a heat network circulation pump 7.

Description

technical field [0001] The invention relates to a civil heating system, in particular to a heating device using low-level renewable energy from circulating water of a cooling tower, and belongs to the field of environment-friendly energy reuse. Background technique [0002] At present, the circulating water of the steam turbine condenser takes away a large amount of heat energy from the thermal power plant through the cooling tower. The thermal efficiency of the thermal power plant is only about 35% on average, and most of the heat energy of the fuel is discharged into the atmosphere through the cooling tower in vain, causing a huge waste of energy. Moreover, it is discharged into the atmosphere, increasing global warming and causing huge environmental pollution. The circulating water of steam turbine condenser in thermal power plants and the outlet of cooling tower circulating water in large and medium-sized refrigeration enterprises have an average temperature of about 33...

AI Technical Summary

Problems solved by technology

However, due to the high utilization cost of low- and medium-level renewable energy, large investment in equipment, and high technical difficulty, this part of thermal resources has not been fully valued and utilized.

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