Solution dehumidification and fresh water production combined system based on flash evaporation regeneration

Abstract

The invention discloses a solution dehumidification and fresh water production combined system based on flash evaporation regeneration. The system comprises a solution dehumidification circulation loop consisting of a dehumidifier and a flash evaporation regenerator; dehumidification packing is arranged in the dehumidifier, a solution distributor is arranged at the upper part of the dehumidification packing, a phase change dehumidification solution is sprayed to the dehumidification packing through the solution distributor, and wet air enters the dehumidifier from the lower part of the dehumidifier through a fan; the flash evaporation regenerator comprises a condensation pipe and a spray pipe, and the condensation pipe forms a cooling water circulation loop with an external cooling water pool through a pipeline; the dehumidified dry air is discharged from an exhaust port formed in the upper part of the dehumidifier, the phase change dehumidification solution which is diluted and subjected to heat absorption enters the flash evaporation regenerator through a connecting pipeline and is sprayed out through the spray pipe in the flash evaporation regenerator, and steam which is formedby flash evaporation at the spray-out moment of the phase change dehumidification solution forms a liquid under the action of the condensation pipe and the liquid is collected by a water collecting tray; and the phase change dehumidification solution which is not subjected to flash evaporation enters a solution tank, is fed into the dehumidifier through a solution pump and is sprayed out through the solution distributor to be dehumidified again.

Description

technical field [0001] The invention relates to a composite system for solution dehumidification and fresh water production based on flash regeneration. Background technique [0002] In the field of refrigeration and air conditioning, the existing research has conducted a lot of positive and beneficial explorations on the performance improvement of the solution dehumidification and regeneration process. In the process of dehumidification / regeneration of the solution, the water in the air is absorbed and the water in the solution is vaporized, respectively, accompanied by the mass migration of water entering / leaving the solution, and the latent heat transfer of the phase change of water also occurs, resulting in an increase or decrease in the temperature of the solution. This change in the thermodynamic state of the solution will further restrict the heat and mass exchange efficiency of the dehumidification / regeneration process. In theory, the greater the mass migration of wa...

AI Technical Summary

Problems solved by technology

Conventional technical measures are to improve this problem by setting internal heat exchange tubes and using cold or heat sources (i.e. internal cooling or internal heat), but they have not fundamentally solved the inherent relationship between the enhancement of heat and mass exchange and the change of the thermodynamic state of the solution. contradiction

In addition, improving the regeneration or dehumidification process from a single perspective will have a non-negligible impact on other processes in the system and the system as a whole. For example, although the dehumidification efficiency is improved, the regeneration process of the dehumidification solution will lead to a significant increase in energy consumption. Examine from the perspective of system collaboration

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