Concentration system for water vapour energy latent heat feedback solution

Abstract

The invention discloses a concentration system for a water vapour energy latent heat feedback solution. After a dilute solution from a water vapour energy heat source tower obtains water vapour latentheat through a heat exchanger, the dilute solution enters a solution negative-pressure evaporator to be concentrated to return to an evaporator so as to realize the concentration circulation of an antifreezing solution. Injected water vapour enters an injection circulation water tank to raise the temperature of circulating water, the circulating water of which the temperature is raised releases latent heat to the dilute solution in the heat exchanger to flow into an overflow box, a circulation process of the injected circulating water is realized, and meanwhile, a purpose that the dilute solution is concentrated and vapour latent heat is fed back to the solution is realized. Obviously, according to the concentration system, the heat of the circulating water is transferred to the dilute solution which leaves from the water vapour energy heat source tower through the heat exchanger to raise the temperature of the dilute solution so as to be favorable for improving evaporation and concentration efficiency, in addition, water vapour latent heat obtained after being lost is fed back to the solution again, the concentration of the antifreezing solution can be realized in an energy saving way, and therefore, and an event that solution is iced and swells to break an evaporator copper pipe since the freezing point temperature of the antifreezing solution rises is effectively avoided.

Description

technical field [0001] The invention relates to the field of water vapor energy heat pumps, in particular to a water vapor energy latent heat feedback solution concentration system. Background technique [0002] While mineral energy is depleting day by day, the living environment of human beings has also become worse. The increase of greenhouse gas carbon dioxide emissions will undoubtedly bring huge and immeasurable disasters to the future of mankind. It is not an exaggeration to call it a catastrophe. All aspects of people's life and work have become a reality. The government attaches great importance to environmental protection and has introduced many related policies to control smog and promote the development of environmental protection. It urges all walks of life to increase innovation, use more energy-saving technologies to reduce emissions, and adopt advanced Energy-saving and emission-reduction technologies have become particularly important, especially air-conditio...

AI Technical Summary

Problems solved by technology

For the defrosting of large central air conditioners, antifreeze can only be used to defrost at present. The biggest confusion of antifreeze defrosting is that the freezing point temperature of antifreeze will continue to rise. Because the water vapor in the air is continuously dissolved in antifreeze, it releases latent heat to prevent freezing. The concentration of the liquid becomes thinner and thinner, which can easily lead to ice formation inside the evaporator and damage to the copper pipe and damage the unit. In addition, the loss of antifreeze will also pollute the water and soil. If heat energy is used to evaporate and concentrate the antifreeze, it will cause Water vapor can be gained and lost

In addition, the closed circulation of the heat exchanger is used to obtain the heat in the air. Similarly, the fins of the heat exchanger will also frost. It is also inappropriate to use antifreeze spray to defrost. The service life of the device is shortened, and there is also the problem that the freezing point temperature of the antifreeze fluid rises

There are also some technical solutions that use wide fins and small temperature differences to reduce the chance of frosting. However, in order to meet the demand for heat load, the power of the circulating pump must be increased, resulting in an increase in the flow and velocity of antifreeze that directly impacts the heat exchange tubes and heat sources of the evaporator. The wall of the finned tube heat exchanger inside the tower greatly shortens its service life and seriously increases the cost of use

In addition, the technical solution of using heat storage to defrost is very unrealistic for large central air conditioners, because it takes a long time for a large amount of antifreeze to be heated from minus ten or twenty degrees to above zero. This method affects the user experience even more than the reverse defrosting method

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