Double-thermal-mass coupling solar hot air type evaporating system and method thereof

Abstract

The invention discloses a double-thermal-mass coupling solar hot air type evaporating system and a method thereof, and belongs to the field of energy and power engineering as well as evaporation. The evaporating system comprises a solution pump, a waste heat recycler, a humidifier, a concentrated solution pump, a fan, a dehumidifier, a solar heat collector, a water pump and a water tank. According to the double-thermal-mass coupling solar hot air type evaporating system disclosed by the invention, energy utilization efficiency of the evaporating system is improved by utilizing collected energy of the solar air heat collector according to the heat and mass transfer principle of an air-water system through a humidifying process, a dehumidifying process and a heat recycling process. The double-thermal-mass coupling solar hot air type evaporating system effectively reduces heat exchange area of a conventional surface type condenser in a dehumidifying process, reduces the cost problem caused by application of corrosion-resistant noble metal, sufficiently utilizes the energy recycling principle inside the system, improves the energy utilization efficiency of the evaporating system, adopts the solar heat collector to collect solar radiation, greatly reduces the environment problem caused by fossil fuel combustion, and meets the objective of national energy conservation and emission reduction and the sustainable development strategy.

Description

technical field [0001] The invention relates to a dual thermal mass coupled solar hot air evaporation system and method, belonging to the fields of energy and power engineering and evaporation. Background technique [0002] In the conventional humidification process, the humid air is directly discharged into the atmosphere after humidification, which does not involve the recovery of water vapor in the humid air and the recovery of the corresponding sensible and latent heat. However, the conventional dehumidifier uses a surface heat exchanger to cool and condense the humid air. The low heat transfer coefficient results in a large heat transfer area. At the same time, based on the strong corrosion characteristics of the solution and sewage in the evaporation system, it is necessary to use a dehumidifier that is resistant to dehumidification Corrosion of precious metals guarantees the life of the equipment, which ultimately leads to a substantial increase in investment costs. ...

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Problems solved by technology

However, the conventional dehumidifier uses a surface heat exchanger to cool and condense the humid air. The low heat transfer coefficient results in a large heat transfer area. At the same time, based on the strong corrosion characteristics of the working fluid such as solution and sewage in the evaporation system, it must be Corrosion of precious metals guarantees the life of the equipment, which ultimately leads to a substantial increase in investment costs

At the same time, the combustion of fossil fuels is usually used to drive the humidification process, which will inevitably bring serious environmental pollution, and it cannot even be used in areas lacking fossil fuels.

The research on introducing the humidification and dehumidification process into the evaporation system and optimizing the design of the corresponding evaporation system into an energy-saving and efficient thermal system has not attracted much attention.

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