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Light-gathering seawater desalination device and seawater desalination method

A technology for concentrating light and fresh water, applied in chemical instruments and methods, seawater treatment, water/sewage treatment, etc., to achieve the effects of reducing loss, improving solar energy utilization rate, and improving utilization rate

Active Publication Date: 2019-11-26
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, seawater desalination devices and seawater desalination methods using solar energy still need to be improved.

Method used

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  • Light-gathering seawater desalination device and seawater desalination method
  • Light-gathering seawater desalination device and seawater desalination method
  • Light-gathering seawater desalination device and seawater desalination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Example 1: Fabrication of a seawater desalination device with a semi-ellipsoidal solar heat collecting cover and a concentrating piece

[0108] The structure of the solar heat collecting cover can refer to the attached figure 1 , Figure 13-14 as well as Figure 17-19 , the semi-ellipsoidal solar heat collecting cover 100 is formed by polyethylene film, the equatorial plane of the solar heat collecting cover 100 is circular, the length ratio of the b axis and the a axis of the solar heat collecting cover (i.e. polar radius and The length ratio of the equatorial radius) is 3:2. The inner wall of this solar heat collecting cover 100 is provided with 16 stainless steel pipe support frames 600 (reference Figure 8 , the structure is similar to the frame of an umbrella and can be folded), the inner wall 140 of the solar heat collecting cover 100 is provided with a coating formed by a one-way light-transmitting coating and an infrared reflecting coating. The turning point...

Embodiment 2

[0109] Example 2: Fabrication of a seawater desalination device with a semi-ellipsoidal solar heat collecting cover, a concentrating member and an isolated heating layer

[0110] Other structures are the same as embodiment 1, and the difference is that the reference Figure 6 , an isolation heating layer 900 is provided at the evaporation plane 110 . Structural reference of isolation heating layer 900 Figure 5 , the matrix 910 of the isolation heating layer 900 is a ceramic material, and the pores 920 have a carbon black / activated carbon light-to-heat conversion material 930 .

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Abstract

The invention discloses a light-gathering seawater desalination device and a seawater desalination method. The seawater desalination device includes: a semielliptical solar heat collection cover, wherein a freshwater collection tank is arranged at the bottom of the inner wall of the solar heat collection cover, the freshwater collection tank defines an evaporation plane at the bottom of the solarheat collection cover, a freshwater outlet is arranged in the freshwater collection tank, the freshwater outlet is connected with a freshwater storage unit, the b-axis length of the solar heat collection cover is longer than the a-axis length of the solar heat collection cover, and the b-axis is perpendicular to the evaporation plane; a light gathering member, wherein the light gathering member isconfigured to gather sunlight radiated to the solar heat collection cover; and a cooling unit, wherein the cooling unit is arranged outside the solar heat collection cover, and is configured to coolthe outer surface of the solar heat collection cover. The light-gathering seawater desalination device can be directly used on the water surface (such as the sea surface), and has the advantages of simple structure, low cost, convenience in use, high solar energy utilization rate, high seawater desalination efficiency and high water purification efficiency.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a light concentrating seawater desalination device and a seawater desalination method. Background technique [0002] Water is the origin of life, and human beings cannot live without water. However, in today's world, human beings are facing a severe shortage of fresh water resources. Seawater desalination can increase the total amount of freshwater and make better use of water resources. Seawater desalination is the use of seawater desalination to produce fresh water. There are many methods for seawater desalination, such as traditional freezing method, distillation method, reverse osmosis method, adsorption method, etc. The above-mentioned methods generally have the disadvantages of high energy consumption and low efficiency, large and complex equipment, high cost, and generation of a large amount of pollutants. Solar desalination of seawater is an emerging technology with grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14F24S23/30F24S70/20F24S20/00F24S80/00C02F103/08
CPCC02F1/14C02F1/043F24S23/30F24S70/20F24S20/00F24S80/00C02F2103/08Y02A20/142Y02A20/212Y02E10/40Y02A20/124
Inventor 张潇源李·伦纳德程文浩黄霞刘瑞峰
Owner TSINGHUA UNIV
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