A method and apparatus for producing water from air by utilizing a hydrophilic-hydrophobic bonding structure

Abstract

A method and apparatus for producing water from air by utilizing of a hydrophilic-hydrophobic bonding structure include a housing provided with a substrate for dividing a cavity in that housing into acold zone flow channel and a hot zone flow channel. The substrate is provided with a semiconductor refrigeration sheet, the hot end face of the semiconductor refrigeration sheet is in contact with the radiating fin, and the cold end face of the semiconductor refrigeration sheet is in contact with the condensing fin. The air enters the cold zone flow channel, contacts with the low temperature surface of the condensing fin, and condenses into liquid droplets in the hydrophobic area of the surface of the condensing fin. Liquid droplets can spontaneously migrate from the hydrophobic region to thehydrophilic region of the surface of the condensing fin and concentrate in the wetting channel of the hydrophilic region, and then is discharged from the surface of the condensing fin through the action of gravity, and the condensing water slips off the condensing fin to obtain liquid water. As that condense surface combines the characteristic of bead condensation in the hydrophobic area, water droplets easy to slide and liquid droplets easy to collect in the hydrophilic area, and the condense water is discharged in time through the hydrophilic wetting channel, the technical difficulties of high air condensation power consumption and difficult collection are solved.

Description

technical field [0001] The invention belongs to the field of engineering thermophysics, and is especially suitable for islands and reefs and other areas with high air humidity but lack of fresh water. It specifically relates to a water production method and its device, in particular to a method for producing water from the air using a hydrophilic-hydrophobic combination structure. and device. Background technique [0002] The prerequisite for people to carry out the exploration and development of remote sea islands and reefs, and the production of daily life is the supply of fresh water resources. Many existing water-making technologies (such as reverse osmosis membrane desalination, multi-stage flash evaporation) are not suitable for improving the severe water shortage of remote islands and reefs. At the same time, the relative humidity of the air in the marine environment is usually as high as 90%, and the dew point temperature can reach 23°C. It is very easy to collect d...

AI Technical Summary

Problems solved by technology

[0004] However, since the condensation method needs to cool down the dry air and water vapor as a whole, the dry air after cooling is actually useless, which wastes a large part of the cooling capacity and increases additional energy consumption; and as the condensation process progresses, the condensation Droplets will adhere to the condensation heat exchange surface, making the heat transfer process into a film condensation, whose thermal resistance is at least an order of magnitude larger than that of bead condensation, which significantly reduces the transfer of cold, reduces the condensation efficiency and increases the entire condensation process. energy consumption

At the same time, liquid droplets accumulate on the condensing surface and are difficult to discharge, resulting in heat exchange stagnation or even frosting, which seriously hinders the transfer of cold energy

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