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1. WO2019113020 - SYSTÈME DE DESSALEMENT D'EAU INTÉGRÉ À UNE SURFACE SÉLECTIVE À MEMBRANE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

What is claimed is:

1. A system for desalinating a fluid comprising:

a light-permeable cover;

an evaporator positioned to receive light transmitted through the light- permeable cover, the evaporator including:

a porous membrane including a selective light absorption surface positioned to receive light transmitted through the light-permeable cover, and having a pore size to favor diffusion of a vapor phase over a liquid phase;

one or more evaporator flow channels positioned to bring a fluid into contact with the porous membrane;

an evaporator inlet channel configured to deliver the fluid to the evaporator flow channels; and

an evaporator outlet channel downstream of the evaporator flow channels; and

an effluent conduit positioned proximate the evaporator and configured to output the vapor phase transmitted through the porous membrane.

2. The system according to claim 1 , further comprising a source of salinated liquid in fluid communication with the inlet channel.

3. The system according to claim 1 , wherein the vapor phase is distilled water vapor.

4. The system according to claim 1 , wherein the one or more evaporator flow channels are disposed in the selective light absorption surface.

5. The system according to claim 4, wherein the one or more evaporator flow channels include a plurality of evaporator flow channels distributed laterally across the selective light absorption surface.

6. The system according to claim 1, wherein the selective light absorption surface

includes a nanostructured surface configured to preferentially reflect infrared light and preferentially absorb visible and near-infrared light.

7. The system according to claim 6, wherein the nanostructured surface includes a

plurality of nanostructures including a metallic substrate, a ceramic template on the metallic substrate, and metallic inserts within the ceramic template and on the metallic substrate.

8. The system according to claim 7, wherein porous membrane includes a plurality of pores and at least one of the plurality of nanostructures is included in the pores.

9. The system according to claim 1 , further comprising a thermal energy storage system in thermal communication with the evaporator,

10. The system according to claim 4, further comprising one or more heating channels positioned between the one or more evaporator flow channels, wherein a thermal energy storage system is in thermal communication with the heating channels.

11. The system according to claim 1, wherein the evaporator inlet channel is in thermal communication with the evaporator outlet channel to recover heat from fluid in the evaporator outlet channel via fluid in the evaporator inlet channel.

12. The system according to claim 1, further comprising a condenser in fluid

communication with the effluent conduit, the condenser including:

a heat sink; and

a product fluid outlet channel.

13. The system according to claim 12, wherein the heat sink is a passive heat sink.

14. The system according to claim 1, wherein the light transmitted through the light- permeable cover is direct sunlight, indirect sunlight, diffused ambient radiation, or combinations thereof.

15. A method for desalinating a fluid comprising:

providing an evaporator, the evaporator including:

a porous membrane including a selective light absorption surface positioned to receive light, and having a pore size to favor diffusion of a vapor phase over a liquid phase; and

one or more evaporator flow channels positioned to bring a fluid into contact with the porous membrane;

positioning the evaporator to receive light transmitted through a light- permeable cover,

transmitting light through the light-permeable cover to the selective light absorption surface;

delivering a target fluid to the evaporator flow channels;

transferring heat from the evaporator to the target fluid;

transmitting a vapor phase through the porous membrane; and

condensing the vapor phase into a fluid product.

16. The method according claim 15, further comprising bringing heated fluid from the evaporator into thermal communication with the target fluid to recover heat from the heated fluid.

17. The method according to claim 15, wherein transmitting light through the light- permeable cover to the selective light absorption surface further comprises:

preferentially, by the selective light absorption surface, reflecting infrared light and preferentially absorbing visible and near-infrared light.

18. The method according to claim 15, wherein the target fluid is salinated water and the fluid product is distilled water.

19. A system for desalinating a fluid comprising:

a body having a light-permeable cover;

an evaporator positioned to receive light transmitted through the light- permeable cover, the evaporator including:

a light-permeable porous membrane positioned to receive light transmitted through the light-permeable cover, and having a pore size to favor diffusion of a vapor phase over a liquid phase;

a selective light absorption surface positioned to receive light transmitted through the light-permeable porous membrane;

one or more evaporator flow channels positioned to bring a fluid into contact with the light-permeable porous membrane;

an evaporator inlet channel configured to deliver the fluid from outside of the body to the evaporator flow channels; and

an evaporator outlet channel downstream of the evaporator flow channels and configured to evacuate fluid from the body;

wherein the evaporator inlet channel is in thermal communication with the evaporator outlet channel to recover heat in the evaporator inlet channel from the evaporator outlet channel through the body; and

an effluent conduit positioned proximate the evaporator and configured to output the vapor phase transmitted through the light-permeable porous membrane.

20. The system according to claim 19, wherein the body further comprises a condenser in fluid communication with the effluent conduit, the condenser including:

a heat sink; and

a product fluid outlet channel.