CN115367830B - Dew point cooling humidifying and dehumidifying solar seawater desalination system and method - Google Patents
Dew point cooling humidifying and dehumidifying solar seawater desalination system and method Download PDFInfo
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- CN115367830B CN115367830B CN202211092349.3A CN202211092349A CN115367830B CN 115367830 B CN115367830 B CN 115367830B CN 202211092349 A CN202211092349 A CN 202211092349A CN 115367830 B CN115367830 B CN 115367830B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a dew point cooling humidifying dehumidifying solar seawater desalination system and a method, wherein an inlet of a solar heater is filled with air, an outlet of the solar heater is connected with an air inlet at the upper end of an air cooling container, an air outlet at the lower end of the side surface of the air cooling container is connected with an air inlet at the lower end of the side surface of the air humidifying container, an air outlet at the upper end of the side surface of the air humidifying container is connected with an air inlet at the upper end of the side surface of the air dehumidifying container, dehumidified air is discharged from an air outlet at the lower end of the side surface of the air dehumidifying container, a water inlet at the upper end of the air humidifying container is filled with seawater and flows downwards along the inner wall of the air humidifying container, the seawater flows out from a water outlet at the lower end of the air humidifying container, and fresh water flows out from a water outlet at the lower end of the air dehumidifying container. The device has simple structure and low cost, realizes zero energy consumption of the ship, greatly reduces the cost of sea water desalination of the ship, and is convenient for large-scale application of sea water desalination of the ship.
Description
Technical Field
The invention relates to a seawater desalination system and a method, in particular to a dew point cooling humidifying dehumidifying solar seawater desalination system and a method, and belongs to the technical field of seawater desalination.
Background
In ocean going, the fresh water supply of a ship is one of the necessary factors for ensuring the normal operation of the ship, and if enough fresh water is carried, the load of the ship on the cargo is reduced, so that the sea water desalination has very important significance for the fresh water supply of the ship going. At present, a sea water desalination system of a ship mainly adopts a distillation or reverse osmosis technology, the distillation desalination energy consumption is high, the cost is high, and the reverse osmosis technology has good desalination effect, but has high investment cost, and the sea water has a large amount of impurities, so that the service life of reverse osmosis equipment is short, the cost is too high, and the large-scale application is difficult.
Disclosure of Invention
The invention aims to solve the technical problem of providing a dew point cooling humidifying dehumidifying solar seawater desalination system and a dew point cooling humidifying dehumidifying solar seawater desalination method, which have low energy consumption and low cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
a dew point cooling humidifying and dehumidifying solar sea water desalination system is characterized in that: the solar energy dehumidification device comprises a solar heater, an air cooling container, an air humidification container and an air dehumidification container, wherein air is introduced into an inlet of the solar heater, an outlet of the solar heater is connected with an air inlet at the upper end of the air cooling container, an air outlet at the lower end of the side surface of the air cooling container is connected with an air inlet at the lower end of the side surface of the air humidification container, an air outlet at the upper end of the side surface of the air humidification container is connected with an air inlet at the upper end of the side surface of the air dehumidification container, dehumidified air is discharged from an air outlet at the lower end of the side surface of the air dehumidification container, seawater is introduced into an upper water inlet of the air humidification container and flows downwards along the inner wall of the air humidification container, seawater flows out from a water outlet at the lower end of the air humidification container, and fresh water flows out from a water outlet at the lower end of the air dehumidification container.
Further, the air cooling container, the air humidifying container and the air dehumidifying container are independent containers or are separated into independent cavities in one container by a partition plate.
Further, an outlet of the solar heater is connected with an air inlet at the upper end of the air cooling container through a first pipeline, and a thermometer and a first flow regulating valve are arranged on the first pipeline.
Further, an air outlet of the air dehumidifying container is connected with an inlet of the solar heater through a second pipeline.
Further, the upper end of the air humidification container is provided with a seawater distributor, the seawater distributor is fixed at a water inlet at the upper end of the air humidification container and is connected with a seawater pump through a third pipeline, and a second flow regulating valve is arranged on the third pipeline.
Further, the seawater distributor comprises a water inlet pipeline, a water distribution tank, a plurality of water distribution pipelines, a water distribution pipeline support and a plurality of nozzles, wherein the water inlet pipeline is arranged in the vertical direction, the lower end of the water inlet pipeline is connected with the upper end of the water distribution tank, the water distribution pipeline is arranged in the radial direction of the water distribution tank, one end of the water distribution pipeline is connected with the side surface of the water distribution tank, the nozzles are arranged at the end part of the other end of the water distribution pipeline, and the water distribution pipelines are distributed at equal intervals in the circumferential direction of the water distribution tank and are fixed in the water distribution pipeline support.
Further, the water distribution tank is a cylindrical tank body, the water distribution pipeline support is a circular support, through holes matched with the water distribution pipeline are formed in the water distribution pipeline support, the water distribution pipeline is inserted into the through holes of the water distribution pipeline support and is locked and fixed through locking bolts, and the water distribution pipeline and the water distribution tank are tightly screwed and fixed through threads.
The sea water desalting method of the dew point cooling, humidifying and dehumidifying solar sea water desalting system is characterized by comprising the following steps of:
s1, cold air enters a solar heater from an inlet of the solar heater to be heated;
s2, the heated air enters the cold air cooling container from an air inlet at the upper end of the air cooling container from an outlet of the solar heater, and the hot air is output from top to bottom along the air cooling container and is cooled to a dew point;
s3, discharging the air cooled to the dew point from an air outlet of the air cooling container, entering the air humidifying container from an air inlet of the air humidifying container, conveying the air cooled to the dew point upwards along the air cooling container from bottom to top, enabling seawater to enter the air humidifying container from an upper water inlet of the air humidifying container and flow downwards along the inner wall of the air humidifying container, humidifying the air cooled to the dew point along a waiting line in the air humidifying container, and then rising along a saturation line;
s4, discharging the humidified and warmed air from an air outlet of the air humidification container, entering the air dehumidification container from an air inlet of the air dehumidification container, enabling the humidified and warmed air to move from top to bottom in the air dehumidification container, reducing the humidity along a saturation line, reducing the temperature, enabling the precipitated fresh water to slide to a water outlet at the lower end of the air dehumidification container along the inner wall of the air dehumidification container, and discharging the dehumidified and cooled air from the air outlet of the air dehumidification container;
s5, the dehumidified and cooled air enters an inlet of a solar heater, and the S1-S5 process is circulated, so that sea water desalination is realized.
Further, in step S2, the temperature of the heated air at the outlet of the solar heater is collected in real time through a thermometer, and the air flow rate is controlled by a first flow regulating valve to regulate the temperature of the heated air, so that the air output by the air cooling container is cooled to the dew point.
Further, in the step S3, the flow rate of the seawater is controlled by the second flow rate adjusting valve, so as to saturate the air humidity at the air outlet of the air humidifying container.
Compared with the prior art, the invention has the following advantages and effects: according to the dew point cooling humidifying dehumidifying solar seawater desalination system and method, air is heated by solar energy and then cooled to a dew point, then the air is saturated with seawater by convection, and finally the saturated air with humidity is cooled, dehumidified and extracted to obtain fresh water.
Drawings
FIG. 1 is a schematic diagram of a dew point cooled humidifying dehumidifying solar desalination system of the present invention.
Fig. 2 is a schematic view of a seawater distributor of the present invention.
Fig. 3 is a temperature and humidity variation curve of the seawater desalination method of the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in figure 1, the dew point cooling humidifying and dehumidifying solar seawater desalination system comprises a solar heater 1, an air cooling container 2, an air humidifying container 3 and an air dehumidifying container 4, wherein air is introduced into an inlet of the solar heater 1, an outlet of the solar heater 1 is connected with an air inlet at the upper end of the air cooling container 2, an air outlet at the lower end of the side surface of the air cooling container 2 is connected with an air inlet at the lower end of the side surface of the air humidifying container 3, an air outlet at the upper end of the side surface of the air humidifying container 3 is connected with an air inlet at the upper end of the side surface of the air dehumidifying container 4, dehumidified air is discharged from an air outlet at the lower end of the side surface of the air dehumidifying container 4, seawater is introduced into an upper end water inlet of the air humidifying container 3 and flows downwards along the inner wall of the air humidifying container 3, seawater flows out from a water outlet at the lower end of the air humidifying container 3, and fresh water flows out from a water outlet at the lower end of the air dehumidifying container 4. According to the invention, the air is heated by solar energy and then cooled to the dew point, then the air is saturated with the seawater by convection, and finally the saturated air with the humidity is cooled, dehumidified and extracted to obtain fresh water.
The air cooling container 2, the air humidifying container 3 and the air dehumidifying container 4 are independent containers or are separated into independent cavities by a partition plate in one container. In this embodiment, in order to facilitate the subsequent uniform distribution of seawater inside the air humidification container 3, the air cooling container 2, the air humidification container 3, and the air dehumidification container 4 all adopt cylindrical tanks.
The outlet of the solar heater 1 is connected with the air inlet at the upper end of the air cooling container 2 through a first pipeline 5, and a thermometer 6 and a first flow regulating valve 7 are arranged on the first pipeline 5. The temperature of the heated air at the outlet of the solar heater 1 is collected in real time through the thermometer 6, and the temperature of the heated air is regulated by controlling the air flow rate through the first flow regulating valve 7, so that the air output by the air cooling container is cooled to the dew point. The air outlet of the air dehumidifying container 4 is connected with the inlet of the solar heater 1 through the second pipeline 8, so that the air coming out of the air dehumidifying container 4 is recycled, external air can be prevented from being introduced into pollutants by recycling, and meanwhile, the air coming out of the air dehumidifying container 4 still has certain humidity and temperature, so that the energy consumption and the subsequent humidifying requirements can be further reduced.
The upper end of the air humidifying container 3 is provided with a seawater distributor 9, the seawater distributor 9 is fixed at a water inlet at the upper end of the air humidifying container 3 and is connected with a seawater pump 11 through a third pipeline 10, and the third pipeline 10 is provided with a second flow regulating valve 12. The flow rate of the seawater is controlled by the second flow rate regulating valve 12 to saturate the air humidity at the air outlet of the air humidification container 3.
As shown in fig. 2, the seawater distributor 9 comprises a water inlet pipe 13, a water distribution tank 14, a plurality of water distribution pipes 15, a water distribution pipe bracket 16 and a plurality of nozzles 17, wherein the water inlet pipe 13 is arranged along the vertical direction, the lower end of the water inlet pipe 13 is connected with the upper end of the water distribution tank 14, the water distribution pipes 15 are arranged along the radial direction of the water distribution tank 14, one end of each water distribution pipe 15 is connected with the side surface of the water distribution tank 14, the nozzles 17 are arranged at the end of the other end of each water distribution pipe 15, and the water distribution pipes 15 are distributed at equal intervals along the circumferential direction of the water distribution tank 14 and are fixed in the water distribution pipe bracket 16. The water distribution tank 14 is a cylindrical tank body, the water distribution pipeline bracket 16 is a circular bracket, the water distribution pipeline bracket 16 is provided with a through hole matched with the water distribution pipeline 15, the water distribution pipeline 15 is inserted into the through hole of the water distribution pipeline bracket 16 and is locked and fixed through a locking bolt 18, and the water distribution pipeline 15 and the water distribution tank 14 are fixed through screw tightening. The seawater distributor 9 is positioned at the lower side of the air outlet of the air humidifying container 3, and uniformly sprays seawater on the inner wall of the air humidifying container 3, so that the seawater is fully contacted with dew point air to humidify the air.
A sea water desalination method of a dew point cooling humidifying and dehumidifying solar sea water desalination system comprises the following steps:
s1, cold air enters the solar heater from an inlet of the solar heater to be heated.
S2, the heated air enters the cold air cooling container from an air inlet at the upper end of the air cooling container from an outlet of the solar heater, and the hot air is output from top to bottom along the air cooling container and is cooled to a dew point. As shown in the process 1-2 in FIG. 2, the air temperature is reduced and the humidity is unchanged.
In step S2, the temperature of the heated air at the outlet of the solar heater is collected in real time through a thermometer, and the temperature of the heated air is adjusted by controlling the air flow rate through a first flow rate adjusting valve, so that the air output by the air cooling container is cooled to the dew point.
S3, discharging the air cooled to the dew point from an air outlet of the air cooling container, entering the air humidifying container from an air inlet of the air humidifying container, conveying the air cooled to the dew point upwards along the air cooling container from bottom to top, enabling seawater to enter the air humidifying container from an upper water inlet of the air humidifying container and flow downwards along the inner wall of the air humidifying container, humidifying the air cooled to the dew point along the same line in the air humidifying container, and then rising along the saturation line. As shown in the 2-3 process of fig. 2, the temperature and humidity of the air change along the isocenter curve, and then rise along the saturation curve. The pumped seawater is higher in temperature through the machine room, additional heating is not needed, and the pumped seawater can be additionally heated when necessary.
In step S3, the flow rate of the seawater is controlled through a second flow rate regulating valve so as to saturate the air humidity at the air outlet of the air humidifying container.
S4, discharging the humidified and warmed air from an air outlet of the air humidification container, entering the air dehumidification container from an air inlet of the air dehumidification container, enabling the humidified and warmed air to move up and down in the air dehumidification container, reducing the humidity along a saturation line, reducing the temperature, enabling the precipitated fresh water to slide down to a water outlet at the lower end of the air dehumidification container along the inner wall of the air dehumidification container, and discharging the dehumidified and cooled air from the air outlet of the air dehumidification container. As shown in h3-h4 of fig. 2, the air is cooled and dehumidified along the saturation line, so that fresh water in the air is separated out, and the desalination of sea water is realized.
S5, the dehumidified and cooled air enters an inlet of a solar heater, and the S1-S5 process is circulated, so that sea water desalination is realized.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present invention.
Claims (10)
1. The dew point cooling, humidifying and dehumidifying solar sea water desalting method is characterized by comprising the following steps of:
s1, cold air enters a solar heater from an inlet of the solar heater to be heated;
s2, the heated air enters the cold air cooling container from an air inlet at the upper end of the air cooling container from an outlet of the solar heater, and the hot air is output from top to bottom along the air cooling container and is cooled to a dew point;
s3, discharging the air cooled to the dew point from an air outlet of the air cooling container, entering the air humidifying container from an air inlet of the air humidifying container, conveying the air cooled to the dew point upwards along the air cooling container from bottom to top, enabling seawater to enter the air humidifying container from an upper water inlet of the air humidifying container and flow downwards along the inner wall of the air humidifying container, humidifying the air cooled to the dew point along a waiting line in the air humidifying container, and then rising along a saturation line;
s4, discharging the humidified and warmed air from an air outlet of the air humidification container, entering the air dehumidification container from an air inlet of the air dehumidification container, enabling the humidified and warmed air to move from top to bottom in the air dehumidification container, reducing the humidity along a saturation line, reducing the temperature, enabling the precipitated fresh water to slide to a water outlet at the lower end of the air dehumidification container along the inner wall of the air dehumidification container, and discharging the dehumidified and cooled air from the air outlet of the air dehumidification container;
s5, the dehumidified and cooled air enters an inlet of a solar heater, and the S1-S5 process is circulated, so that sea water desalination is realized.
2. The dew point cooling humidifying and dehumidifying solar seawater desalination method as claimed in claim 1, wherein: in the step S2, the temperature of the heated air at the outlet of the solar heater is collected in real time through a thermometer, and the air flow rate is controlled through a first flow regulating valve to regulate the temperature of the heated air, so that the air output by the air cooling container is cooled to the dew point.
3. The dew point cooling humidifying and dehumidifying solar seawater desalination method as claimed in claim 1, wherein: in the step S3, the flow rate of the seawater is controlled by the second flow rate adjusting valve, so as to saturate the air humidity at the air outlet of the air humidifying container.
4. A seawater desalination system for carrying out the dew point cooling humidifying dehumidifying solar seawater desalination method of any one of claims 1 to 3, characterized in that: the solar energy dehumidification device comprises a solar heater, an air cooling container, an air humidification container and an air dehumidification container, wherein air is introduced into an inlet of the solar heater, an outlet of the solar heater is connected with an air inlet at the upper end of the air cooling container, an air outlet at the lower end of the side surface of the air cooling container is connected with an air inlet at the lower end of the side surface of the air humidification container, an air outlet at the upper end of the side surface of the air humidification container is connected with an air inlet at the upper end of the side surface of the air dehumidification container, dehumidified air is discharged from an air outlet at the lower end of the side surface of the air dehumidification container, seawater is introduced into an upper water inlet of the air humidification container and flows downwards along the inner wall of the air humidification container, seawater flows out from a water outlet at the lower end of the air humidification container, and fresh water flows out from a water outlet at the lower end of the air dehumidification container.
5. A seawater desalination system as claimed in claim 4, wherein: the air cooling container, the air humidifying container and the air dehumidifying container are independent containers or are separated into independent cavities in one container by a partition board.
6. A seawater desalination system as claimed in claim 4, wherein: the outlet of the solar heater is connected with an air inlet at the upper end of the air cooling container through a first pipeline, and a thermometer and a first flow regulating valve are arranged on the first pipeline.
7. A seawater desalination system as claimed in claim 4, wherein: and an air outlet of the air dehumidifying container is connected with an inlet of the solar heater through a second pipeline.
8. A desalination system according to claim 4 wherein: the upper end of the air humidification container is provided with a seawater distributor, the seawater distributor is fixed at a water inlet at the upper end of the air humidification container and is connected with a seawater pump through a third pipeline, and a second flow regulating valve is arranged on the third pipeline.
9. A seawater desalination system as claimed in claim 8, wherein: the seawater distributor comprises a water inlet pipeline, a water distribution tank, a plurality of water distribution pipelines, a water distribution pipeline support and a plurality of nozzles, wherein the water inlet pipeline is arranged in the vertical direction, the lower end of the water inlet pipeline is connected with the upper end of the water distribution tank, the water distribution pipeline is arranged in the radial direction of the water distribution tank, one end of the water distribution pipeline is connected with the side surface of the water distribution tank, the nozzles are arranged at the end part of the other end of the water distribution pipeline, and the water distribution pipelines are distributed at equal intervals in the circumferential direction of the water distribution tank and are fixed in the water distribution pipeline support.
10. A seawater desalination system as claimed in claim 9, wherein: the water distribution tank is a cylindrical tank body, the water distribution pipeline support is a circular support, through holes matched with the water distribution pipeline are formed in the water distribution pipeline support, the water distribution pipeline is inserted into the through holes of the water distribution pipeline support and is locked and fixed through locking bolts, and the water distribution pipeline and the water distribution tank are fixed through screw tightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211092349.3A CN115367830B (en) | 2022-09-08 | 2022-09-08 | Dew point cooling humidifying and dehumidifying solar seawater desalination system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211092349.3A CN115367830B (en) | 2022-09-08 | 2022-09-08 | Dew point cooling humidifying and dehumidifying solar seawater desalination system and method |
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| CN115367830B true CN115367830B (en) | 2023-08-04 |
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| CN207986716U (en) * | 2017-12-26 | 2018-10-19 | 山东科技大学 | A kind of humidifying compression desalination plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190241444A1 (en) * | 2018-02-08 | 2019-08-08 | King Fahd University Of Petroleum And Minerals | Solar humidifier and dehumidifier desalination method and system for the desalination of saline water |
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2022
- 2022-09-08 CN CN202211092349.3A patent/CN115367830B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101993124A (en) * | 2009-08-28 | 2011-03-30 | 浙江海洋学院 | Method and device for desalting seawater by absorbing solar energy through using carbon nano tube |
| CN102674491A (en) * | 2012-05-14 | 2012-09-19 | 上海交通大学 | Seawater desalination device |
| CN103626249A (en) * | 2013-12-10 | 2014-03-12 | 天津城建大学 | Sea water desalting device and method for solar photovoltaic semiconductor refrigeration |
| WO2017007295A1 (en) * | 2015-07-03 | 2017-01-12 | Universite Internationale De Rabat | System for producing fresh water by multiple-effect humidification-dehumidification |
| CN207986716U (en) * | 2017-12-26 | 2018-10-19 | 山东科技大学 | A kind of humidifying compression desalination plant |
| CN108328684A (en) * | 2018-02-08 | 2018-07-27 | 山东科技大学 | A kind of multistage seawater desalination system based on change carrier gas humidity |
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| CN115367830A (en) | 2022-11-22 |
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