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Portable solar photo-thermal evaporation seawater desalination distiller and method

A solar-powered, portable technology, applied in chemical instruments and methods, seawater treatment, general water supply conservation, etc., can solve the problems of increasing light scattering rate, reducing effective lighting area, high density, etc., to improve evaporation temperature and efficiency, improve optical Utilization, heat loss reduction effect

Pending Publication Date: 2022-01-07
ZHEJIANG ZHENENG TECHN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because portable equipment not only needs to consider solar energy conversion efficiency, but also needs to realize the economy and portability of the equipment, including lightweight, foldable and easy to assemble, so it is impossible to copy the structure and materials of large solar desalination equipment
In particular, the light-transmitting condensation glass cover parts in large-scale solar desalination equipment are expensive, dense and cannot be folded, so they are not suitable for use as condensation cover parts for portable equipment; In small portable devices, the effective illumination area will be reduced, and it has the disadvantages of easy aging, corrosion and inability to fold
However, the research on traditional portable stills has given up effective heat insulation components, which has brought a non-negligible system-environmental heat loss; Hydrophobic, causing water droplets to form mist droplets on the condensing surface, greatly increasing the light scattering rate, thereby reducing the utilization rate of sunlight

Method used

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  • Portable solar photo-thermal evaporation seawater desalination distiller and method
  • Portable solar photo-thermal evaporation seawater desalination distiller and method

Examples

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Effect test

Embodiment 1

[0022] Embodiment 1 of the present application provides a portable solar photothermal evaporation seawater desalination distiller, which heats the thin liquid layer at the interface and evaporates it, and uses the water-absorbing core in the water channel to continuously draw seawater to the heating interface, so that the photothermal The evaporation process continues to continue, greatly reducing the heat loss during the evaporation process, thereby increasing the evaporation temperature and heat utilization rate; the surface hydrophilic modified condensation structure can effectively reduce the scattering of sunlight by the mist droplets on the cover plate, thereby Improve the solar optical utilization rate, thereby improving the efficiency of solar desalination.

[0023] The portable solar photothermal evaporation seawater desalination distiller includes a condensation structure 1, a photothermal conversion material 2, a water guide channel 3, a heat insulation layer 4, a se...

Embodiment 2

[0030] Embodiment 2 of the present application provides a seawater desalination method for a portable solar photothermal evaporation seawater desalination distiller: seawater enters the seawater communication layer 5 through the seawater communication hole, and then passes through the heat insulation layer 4 through the water guide channel 3 to reach the photothermal conversion Material 2 is heated and evaporated by light; the steam undergoes heat exchange through the condensation structure 1 and condenses into fresh water. The fresh water slides down the inner wall of the condensation structure 1 and enters the fresh water collection tank 6 connected with the condensation structure 1, and finally is discharged from the fresh water discharge hole, such as figure 2 shown.

Embodiment 3

[0032] The operation example of the portable solar thermal evaporation seawater desalination distiller for solar thermal evaporation seawater desalination is as follows: a portable distiller device with a diameter of 30cm, in a coastal city in southern China on a sunny day in autumn, the ambient temperature is 25-30 degrees Celsius, the equivalent standard Under the condition of 5.7 hours of sunlight, the water production of the distiller after 24 hours of operation is 225mL, that is, 3.8kg / m 2 *day, its solar desalination efficiency is 45%.

[0033] The present invention adopts an interface evaporation structure, by arranging a light-absorbing material at the interface between seawater and air, heating and evaporating the thin liquid layer at the interface, and using the heat insulation layer at the bottom of the light-absorbing material to cooperate with the water-absorbing core, on the one hand, the seawater is continuously absorbed To the heating interface, the phototherma...

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Abstract

The invention relates to a portable solar photo-thermal evaporation seawater desalination distiller, which comprises a condensation structure, a photo-thermal conversion material, a water guide channel, a heat insulation layer, a seawater communication layer and a fresh water collection tank, wherein the condensation structure is arranged to be a structure facilitating downward sliding of condensed water, the photo-thermal conversion material is arranged on the lower portion of the condensation structure, the heat insulation layer is arranged on the lower portion of the photo-thermal conversion material, the through water guide channel is formed in the heat insulation layer, the lower edge of the condensation structure is communicated with the upper portion of the fresh water collection tank at the periphery of the heat insulation layer, the fresh water collection tank and the bottom surface of the heat insulation layer define the seawater communication layer, the bottom of the fresh water collection tank is provided with the fresh water discharge hole, and the bottom surface of the fresh water collection tank is provided with a through seawater communication hole. According to the invention, the condensation structure facilitating downward sliding of condensed water is arranged, the condensation structure is communicated with the conical fresh water collection tank, the seawater communication layer between the fresh water collection tank and the heat insulation layer can meet the requirement for continuous drawing of seawater, the floatable property is achieved, and high-efficiency seawater desalination is achieved.

Description

technical field [0001] The invention relates to the fields of seawater desalination and photothermal evaporation, in particular to a portable distiller and method for desalination of seawater by solar photothermal evaporation. Background technique [0002] Seawater desalination technology can effectively play the role of incremental water source and help to solve the water resource bottleneck problem of island and coastal economic and social sustainable development. Currently built seawater desalination plants mainly use reverse osmosis and low-temperature multi-effect distillation technology, but due to the large-scale cost and long-distance water transmission cost caused by high energy consumption, it is difficult to fully cover islands, offshore platforms, tidal flats and coastal areas Remote towns and villages. Solar seawater desalination thermal technology can use the photothermal resources of renewable solar energy in these areas, heat seawater to undergo phase change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08Y02A20/124Y02A20/142Y02A20/212
Inventor 骆周扬杨一帆沈乐山申震厉宸希祁志福
Owner ZHEJIANG ZHENENG TECHN RES INST
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