CN105299783A - Solar-driven solution membrane concentration and solution dehumidification device and dehumidification method - Google Patents
Solar-driven solution membrane concentration and solution dehumidification device and dehumidification method Download PDFInfo
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- CN105299783A CN105299783A CN201510732120.5A CN201510732120A CN105299783A CN 105299783 A CN105299783 A CN 105299783A CN 201510732120 A CN201510732120 A CN 201510732120A CN 105299783 A CN105299783 A CN 105299783A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a solar-driven solution membrane concentration and solution dehumidification device and a dehumidification method. The device comprises a solar heat collecting module, a solution membrane concentration module and a solution dehumidification module which are connected. The solar heat collecting module comprises a solar heat collector in circulating connection with a saline solution-water heat exchanger. The solution membrane concentration module comprises a hollow fiber membrane assembly connected with the saline solution-water heat exchanger and a solution storage tank connected with the hollow fiber membrane assembly. The solution storage tank is connected with the saline solution-water heat exchanger and the solution dehumidification module. The solution dehumidification module comprises a padding type solution spray dehumidifier in circulating connection with the solution storage tank. Solar energy is adopted as a drive heat source for heating an absorptive saline solution; the hydrophobic hollow fiber membrane assembly is adopted as a carrier, and the saline solution is condensed and stored based on an air purging type membrane distillation mechanism; and the padding type solution spray dehumidifier is adopted for carrying out dehumidification on dehumidified air, and the functions of adjustment on indoor humidity and energy saving of the whole system are achieved.
Description
Technical field
The invention belongs to HVAC and building thermal technique technical applications, relate to indoor humidity and regulate and energy saving of system process, particularly a kind of solution film of Driven by Solar Energy concentrates and solution dehumidification device and dehumanization method.
Background technology
Building energy consumption is the important component part of entire society's energy consumption link, and the energy consumption being representative with heating, air conditioning accounts for again about 50% of building total energy consumption, and the electric power of refrigeration air-conditioner consumption accounts for the 20-30% of city wastage in bulk or weight electric power.Therefore, greatly develop energy-conserving and emission-cutting technology, seek clean reproducible energy and substitute the only way that day by day exhausted traditional fossil energy is considered to Future Social Development.
Solar energy is a kind of clean reproducible energy, and its heat utilization technology is long-standing.2010, in China, New Energy Industry was listed in one of China seven great strategy industry, and solar thermal utilization is wherein as giving priority to industry.By 2015, national solar energy industry recoverable amount will reach 400,000,000 square metres, increases by 20% every year, and solar thermal utilization will account for 10% of renewable energy utilization.
China's solar radiation annual amount is 3.35 ~ 8.40kJ/cm
2, its mean value is approximately 5.86kJ/cm
2.China 2/3rds sunshine hour in area year number more than 2200 hours, year solar radiation total amount be greater than every square metre 5,000 million burnt, belong to Solar use condition regional preferably.The solar radiation energy in the area such as Tibet, Qinghai, Xinjiang, Gansu, the Inner Mongol, Shanxi, Shaanxi, Hebei, Shandong, Liaoning, Jilin, Yunnan, Guangdong, Fujian, Hainan is comparatively large, and especially Qinghai-xizang Plateau Region solar energy resources is the abundantest.As can be seen from the contrast of China's building thermal performance design block plan and China distribution of solar energy figure, the northern area of China is in cold or severe cold area, and the solar energy resources distribution many places in these areas are in I class and II class area, annual sunshine time is generally at more than 3000h, and annual radiant all quality is higher than 5800MJ/m
2, application potential is huge.
Film distillation technology is a kind of high efficient separation technology that Conventional espresso technique combines with membrane separation technique, and Membrane Materials utilizes the hydrophobicity of polymeric membrane and some structural function to reach the object of solution distillation and concentration.Solution separates by polymeric membrane, utilize the partial pressure difference of film both sides steam to realize the cross-film transmission of steam, and solution is not by film.Be different from traditional distil process, Membrane Materials process does not need solution to be heated to fluidized state, as long as film both sides maintain the suitable temperature difference just can realize distillation, therefore operating temperature is more much lower than traditional distillation procedure, effectively can utilize the cheap energy such as geothermal energy, solar energy and industrial wastewater waste heat, be expected to become a kind of cheap, efficient separation means.Membrane Materials process is almost carry out at ambient pressure, and equipment is simple, easy to operate.In the Membrane Materials process of the Nonvolatile solute aqueous solution, only have steam can through fenestra.
Membrane Materials is roughly divided into four classes, i.e. pressure reducing film distillation or vacuum membrane distillation, direct contact membrane distillation, clearance-type Membrane Materials and sweep gas membrane disillation, wherein solution is arranged in the inner side of film by sweep gas membrane disillation, and outside is free air-blowing to sweep, and the steam diffused to outside film is blown down inside film, thus ensure that the steam partial pressure of film both sides is poor, realize the film concentrating function of solution.
Solution dehumidification system utilizes absorbability salting liquid to the absorption characteristic of steam to realize the dehumidification function of air, the core of solution dehumidification system is salting liquid steam to stronger absorbability, concentration of salt solution is higher, stronger to the absorbability of steam, for ensureing absorbability, salting liquid must have certain concentration.Absorb the salting liquid terminated and become weak solution, need to carry out again to regenerate or the concentration process of salting liquid.
Sweep gas membrane disillation can utilize solar energy heating dilute concentration salting liquid, and the salting liquid of high-temperature dilute concentration realizes the concentration process of solution in hollow fiber film assembly by the diffusion of steam.
Patent " a kind of device and method based on the steam compressed membrane method dehumidifying absorbed with solution " (number of patent application: 201310053755.3) disclose and a kind ofly improve the membrane method dehumidifying method after air pressure, this belongs to pressure drive membrane dehumanization method.Patent " composite dehumidification apparatus based on film " (number of patent application: 200420095112.1) disclose a kind of remaining wet method of waste heat adopted in membrane exchanger recovery air draft, membrane exchanger both sides are wherein all gas.
Summary of the invention
The object of this invention is to provide the concentrated and solution dehumidification device of a kind of solution film of Driven by Solar Energy and dehumanization method, this device relies on film both sides steam partial pressure difference to realize solution at ambient pressure and concentrates, utilize solar energy for heat source salting liquid, sweep gas membrane disillation method is adopted to realize the concentrated of salting liquid, adopt filler fountain solution dehumidification device to carry out the dehumidification process of air, the solution film defining Driven by Solar Energy concentrates and solution dehumidification device.
The object of the invention is to be realized by following technical proposals.
The solution film of Driven by Solar Energy concentrates and a solution dehumidification device, comprises interconnective solar energy heat collecting module, solution film concentrates module and solution dehumidification module;
Described solar energy heat collecting module comprises salting liquid-water heat exchanger, and the solar thermal collector be connected with its circulation;
Described solution film concentrates module and comprises the hollow fiber film assembly be connected with salting liquid-water heat exchanger, and the solution reservoir be connected with hollow fiber film assembly, and solution reservoir connects salting liquid-water heat exchanger and solution dehumidification module respectively;
Described solution dehumidification module comprises material filling type solution spraying dehumidifier, and material filling type solution spraying dehumidifier circulates with solution reservoir and is connected.
Further, described salting liquid-water heat exchanger is connected with hollow fiber film assembly by auxiliary thermal source.
Further, described hollow fiber film assembly sidepiece is provided with pressure fan.
Further, described solution reservoir is connected with salting liquid-water heat exchanger, material filling type solution spraying dehumidifier respectively by liquid circulation pump.
Further, described solution reservoir is provided with heat-insulation layer.
Correspondingly, the present invention gives and a kind ofly utilizes the solution film of Driven by Solar Energy to concentrate and solution dehumidification device carries out the method that dehumidifies, comprises the steps:
1) under solar radiation on daytime adequate condition, start solar energy heat collecting module, add hot-salt solution-water heat exchanger, now 1# liquid circulation pump is opened;
2) open solution film and concentrate module, the film realizing solution concentrates: now, 1# stop valve is opened, 2# stop valve is closed, pressure fan starts, and 2# liquid circulation pump is opened, and the solution circulation in solution reservoir is flow through hollow fiber film assembly, the diffusion into the surface of hollow fiber film assembly steam out blows down by the wind that pressure fan is sent, and the film realizing solution concentrates;
3) open solution dehumidification module, realize the solution dehumidification of new wind or return air: now, material filling type solution spraying dehumidifier is opened, and 2# stop valve is opened, and 3# liquid circulation pump, 4# liquid circulation pump are opened;
4) 3# stop valve is opened, and 5# liquid circulation pump is opened, and cooling device starts simultaneously, and since then, the solution film that whole device starts Driven by Solar Energy concentrates and solution dehumidification cyclic process.
Further, if do not need daytime to open dehumidification function, device only carries out the concentration process of solution, now, close solution dehumidification module, 2# stop valve, 3# stop valve are closed, 3# liquid circulation pump, 4# liquid circulation pump and 5# liquid circulation pump are closed, and cooling device is closed.
Further, store dense saline solution in solution reservoir and material filling type solution spraying dehumidifier, described salting liquid is one or more mixed solutions in lithium-bromide solution, lithium chloride solution or calcium chloride solution.
Further, the membrane material that described hollow fiber film assembly adopts is dense hydrophobic microporous barrier, comprises polythene PE membrane material, polypropylene PP membrane material, polytetrafluoroethylene PTFE membrane material or Kynoar pvdf membrane material and the surperficial membrane material strengthening process through hydrophobicity of film.
Further, the working media in solar energy heat collecting module is the pure water being added with anti-icing fluid.
Therefore, the present invention utilizes solar energy as driving heat source, based on the salting liquid concentration process of sweep gas membrane disillation, for solution dehumidification system provides the salting liquid of high concentration, finally realizes the dehumidification function of air.Effectively utilize this renewable and clean energy resource of solar energy on the one hand, improve the efficiency of energy utilization of solar energy, realize the concentration process of solution in membrane module; On the other hand, with hydrophobic hollow fiber membrane module for carrier, utilize sweep gas membrane disillation technology, realize salting liquid storing compared with the concentration process under low operating temperature, adopt material filling type solution spraying dehumidifier to dehumidify to dehumidified air, realize the adjustment of indoor humidity and the power saving function of whole system.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
In figure: I: solar energy heat collecting module; II: solution film concentrates module; III: solution dehumidification module; 1: solar thermal collector; 2: salting liquid-water heat exchanger; 3:1# liquid circulation pump; 4: hollow fiber film assembly; 5: solution reservoir; 6:1# stop valve; 7:2# liquid circulation pump; 8: auxiliary thermal source; 9: pressure fan; 10:2# stop valve; 11:3# liquid circulation pump; 12: material filling type solution spraying dehumidifier; 13:4# liquid circulation pump; 14:3# stop valve; 15:5# liquid circulation pump; 16: cooling device.
Detailed description of the invention
Below in conjunction with accompanying drawing, operation principle of the present invention is described in further detail.
With reference to Fig. 1, the solution film of Driven by Solar Energy of the present invention concentrates and solution dehumidification device, comprises interconnective solar energy heat collecting module I, solution film concentrates module ii and solution dehumidification module ii I.
Wherein, solar energy heat collecting module I comprises salting liquid-water heat exchanger 2, with the solar thermal collector 1 be connected with its circulation by 1# liquid circulation pump 3.The outlet of solar thermal collector 1 is connected with the water inlet of salting liquid-water heat exchanger 2, and the water out of salting liquid-water heat exchanger 2 is connected with the import of 1# liquid circulation pump 3, and the outlet of 1# liquid circulation pump 3 is connected with the entrance of solar thermal collector 1.
Solution film concentrates module ii and comprises the hollow fiber film assembly 4 be connected with salting liquid-water heat exchanger 2, and the solution reservoir 5 be connected with hollow fiber film assembly 4, and solution reservoir 5 is provided with heat-insulation layer, and hollow fiber film assembly 4 sidepiece is provided with pressure fan 9.Solution reservoir 5 connects salting liquid-water heat exchanger 2 and solution dehumidification module ii I respectively by pipeline; The road pipeline be connected with salting liquid-water heat exchanger 2 is connected with auxiliary thermal source 8, another road pipeline be connected with salting liquid-water heat exchanger 2 connects solution reservoir 5, solution reservoir 5 connects salting liquid-water heat exchanger 2 by 1# stop valve 6,2# liquid circulation pump 7, and solution reservoir 5 connects solution dehumidification module ii I by 2# stop valve 10,3# liquid circulation pump 11.
The connected mode that solution film concentrates module ii is: the salting liquid outlet of salting liquid-water heat exchanger 2 is connected with the import of auxiliary thermal source 8, the outlet of auxiliary thermal source 8 is connected with the entrance of hollow fiber film assembly 4, the outlet of hollow fiber film assembly 4 is connected with the import above of solution reservoir 5, the left side outlet of solution reservoir 5 is connected with the import of 1# stop valve 6, the outlet of 1# stop valve 6 is connected with the entrance of 2# liquid circulation pump 7, and the outlet of 2# liquid circulation pump 7 is connected with the salting liquid entrance of salting liquid-water heat exchanger 2.
Solution dehumidification module ii I comprises material filling type solution spraying dehumidifier 12, and material filling type solution spraying dehumidifier 12 and solution reservoir 5 do to circulate by 3# stop valve 14,5# liquid circulation pump 15 and be connected.Wherein, in material filling type solution spraying dehumidifier 12, be provided with cooling device 16, material filling type solution spraying dehumidifier 12 be equipped with the circulation line connected by 4# liquid circulation pump 13.
The connected mode of solution dehumidification module ii I is: the right-side outlet of solution reservoir 5 is connected with the entrance of 2# stop valve 10, the outlet of 2# stop valve 10 is connected with the import of 3# liquid circulation pump 11, the outlet of 3# liquid circulation pump 11 is connected with the left side solution inlet port of material filling type solution spraying dehumidifier 12, the right side taphole of material filling type solution spraying dehumidifier 12 is connected with the import of 4# liquid circulation pump 13, outlet and the shower being connected to material filling type solution spraying dehumidifier 12 of 4# liquid circulation pump 13.In addition, the taphole below material filling type solution spraying dehumidifier 12 is connected with the entrance of 3# stop valve 14, and the outlet of 3# stop valve 14 is connected with the import of 5# liquid circulation pump 15, and the outlet of 5# liquid circulation pump 15 is connected with the solution inlet port below solution reservoir 5.Need the new wind of dehumidifying or indoor return air or new wind to enter in the middle and lower part of material filling type solution spraying dehumidifier 12 with the wind that mixes of indoor return air, flow out from the top of material filling type solution spraying dehumidifier 12.In the accumulating at lower part liquid pool of material filling type solution spraying dehumidifier 12, cooling device 16 is installed.
The present invention utilizes the solution film of Driven by Solar Energy to concentrate and solution dehumidification device carries out the method that dehumidifies, comprises the steps:
1), under solar radiation on daytime adequate condition, start solar energy heat collecting module I, add hot-salt solution-water heat exchanger 2, now 1# liquid circulation pump 3 is opened;
2) open solution film and concentrate module ii, the film realizing solution concentrates: now, 1# stop valve 6 is opened, 2# stop valve 10 is closed, pressure fan 9 starts, and 2# liquid circulation pump 7 is opened, and the solution circulation in solution reservoir 5 is flow through hollow fiber film assembly 4, the diffusion into the surface of hollow fiber film assembly 4 steam out blows down by the wind that pressure fan 9 is sent, and the film realizing solution concentrates;
3) open solution dehumidification module ii I, realize the solution dehumidification of new wind or return air: now, material filling type solution spraying dehumidifier 12 is opened, and 2# stop valve 10 is opened, and 3# liquid circulation pump 11,4# liquid circulation pump 13 are opened;
4) 3# stop valve 14 is opened, and 5# liquid circulation pump 15 is opened, and cooling device 16 starts simultaneously, and since then, the solution film that whole device starts Driven by Solar Energy concentrates and solution dehumidification cyclic process.
If do not need daytime to open dehumidification function, device only carries out the concentration process of solution, now, close solution dehumidification module ii I, 2# stop valve 10,3# stop valve 14 are closed, and 3# liquid circulation pump 11,4# liquid circulation pump 13 and 5# liquid circulation pump 15 are closed, and cooling device 16 is closed.
If daytime, solar radiation was in poor shape, auxiliary thermal source 8 can be opened and carry out auxiliary heating to guarantee the concentration process of solution.
When device is initially installed, store dense saline solution in solution reservoir 5 and material filling type solution spraying dehumidifier 12, meanwhile, solution reservoir 5 is provided with Insulation.Working media in solar energy heat collecting module I is the pure water being added with anti-icing fluid.Described salting liquid is one or more mixed solutions in lithium-bromide solution, lithium chloride solution or calcium chloride solution.
The membrane material that hollow fiber film assembly 4 adopts is dense hydrophobic microporous barrier, comprises polythene PE membrane material, polypropylene PP membrane material, polytetrafluoroethylene PTFE membrane material or Kynoar pvdf membrane material and the surperficial membrane material strengthening process through hydrophobicity of film.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (10)
1. the solution film of Driven by Solar Energy concentrates and a solution dehumidification device, it is characterized in that, comprises interconnective solar energy heat collecting module (I), solution film concentrates module (II) and solution dehumidification module (III);
Described solar energy heat collecting module (I) comprises salting liquid-water heat exchanger (2), and the solar thermal collector (1) be connected with its circulation;
Described solution film concentrates module (II) and comprises the hollow fiber film assembly (4) be connected with salting liquid-water heat exchanger (2), and the solution reservoir (5) to be connected with hollow fiber film assembly (4), solution reservoir (5) connects salting liquid-water heat exchanger (2) and solution dehumidification module (III) respectively;
Described solution dehumidification module (III) comprises material filling type solution spraying dehumidifier (12), and material filling type solution spraying dehumidifier (12) circulates with solution reservoir (5) and is connected.
2. the solution film of Driven by Solar Energy according to claim 1 concentrates and solution dehumidification device, it is characterized in that, described salting liquid-water heat exchanger (2) is connected with hollow fiber film assembly (4) by auxiliary thermal source (8).
3. the solution film of Driven by Solar Energy according to claim 1 concentrates and solution dehumidification device, and it is characterized in that, described hollow fiber film assembly (4) sidepiece is provided with pressure fan (9).
4. the solution film of Driven by Solar Energy according to claim 1 concentrates and solution dehumidification device, it is characterized in that, described solution reservoir (5) is connected with salting liquid-water heat exchanger (2), material filling type solution spraying dehumidifier (12) respectively by liquid circulation pump.
5. the solution film of Driven by Solar Energy according to claim 4 concentrates and solution dehumidification device, and it is characterized in that, described solution reservoir (5) is provided with heat-insulation layer.
6. utilize the solution film of described Driven by Solar Energy to concentrate to carry out with solution dehumidification device the method dehumidified, it is characterized in that, comprise the steps:
1) under solar radiation on daytime adequate condition, start solar energy heat collecting module (I), add hot-salt solution-water heat exchanger (2), now 1# liquid circulation pump (3) is opened;
2) open solution film and concentrate module (II), the film realizing solution concentrates: now, 1# stop valve (6) is opened, 2# stop valve (10) is closed, pressure fan (9) starts, 2# liquid circulation pump (7) is opened, solution circulation in solution reservoir (5) is flow through hollow fiber film assembly (4), the diffusion into the surface steam out of hollow fiber film assembly (4) blows down by the wind that pressure fan (9) is sent, and the film realizing solution concentrates;
3) solution dehumidification module (III) is opened, realize the solution dehumidification of new wind or return air: now, material filling type solution spraying dehumidifier (12) is opened, 2# stop valve (10) is opened, and 3# liquid circulation pump (11), 4# liquid circulation pump (13) are opened;
4) 3# stop valve (14) is opened, and 5# liquid circulation pump (15) is opened, and cooling device (16) starts simultaneously, and since then, the solution film that whole device starts Driven by Solar Energy concentrates and solution dehumidification cyclic process.
7. method according to claim 6, it is characterized in that, if do not need daytime to open dehumidification function, device only carries out the concentration process of solution, now, close solution dehumidification module (III), 2# stop valve (10), 3# stop valve (14) are closed, 3# liquid circulation pump (11), 4# liquid circulation pump (13) and 5# liquid circulation pump (15) are closed, and cooling device (16) is closed;
If daytime, solar radiation was in poor shape, opens auxiliary thermal source (8) and carry out auxiliary heating to guarantee the concentration process of solution.
8. method according to claim 6, it is characterized in that, store dense saline solution in solution reservoir (5) and material filling type solution spraying dehumidifier (12), described salting liquid is one or more mixed solutions in lithium-bromide solution, lithium chloride solution or calcium chloride solution.
9. method according to claim 6, it is characterized in that, the membrane material that described hollow fiber film assembly (4) adopts is dense hydrophobic microporous barrier, comprises polythene PE membrane material, polypropylene PP membrane material, polytetrafluoroethylene PTFE membrane material or Kynoar pvdf membrane material.
10. method according to claim 8, is characterized in that, the working media in solar energy heat collecting module (I) is the pure water being added with anti-icing fluid.
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| CN109626471A (en) * | 2019-01-10 | 2019-04-16 | 西安交通大学 | In conjunction with the membrane distillation water processing system and method for solar concentrating photovoltaic photothermal technique |
| CN109798624A (en) * | 2019-01-25 | 2019-05-24 | 重庆大学 | Indirect evaporation internally cooled heat-pump-type solution fresh air dehumidification device |
| CN109812913A (en) * | 2019-01-25 | 2019-05-28 | 重庆大学 | Indirect evaporation internally-cooled solution fresh air dehumidification device |
| CN111943298A (en) * | 2020-08-15 | 2020-11-17 | 自然资源部天津海水淡化与综合利用研究所 | Solar air sweeping membrane distillation system |
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| CN111943298A (en) * | 2020-08-15 | 2020-11-17 | 自然资源部天津海水淡化与综合利用研究所 | Solar air sweeping membrane distillation system |
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Application publication date: 20160203 |