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Solar humidification

About: Solar humidification is a research topic. Over the lifetime, 507 publications have been published within this topic receiving 11138 citations.


Papers
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Journal ArticleDOI
TL;DR: Nanophotonics-enabled solar membrane distillation (NESMD) is demonstrated, where highly localized photothermal heating induced by solar illumination alone drives the distillation process, entirely eliminating the requirement of heating the input water.
Abstract: With more than a billion people lacking accessible drinking water, there is a critical need to convert nonpotable sources such as seawater to water suitable for human use. However, energy requirements of desalination plants account for half their operating costs, so alternative, lower energy approaches are equally critical. Membrane distillation (MD) has shown potential due to its low operating temperature and pressure requirements, but the requirement of heating the input water makes it energy intensive. Here, we demonstrate nanophotonics-enabled solar membrane distillation (NESMD), where highly localized photothermal heating induced by solar illumination alone drives the distillation process, entirely eliminating the requirement of heating the input water. Unlike MD, NESMD can be scaled to larger systems and shows increased efficiencies with decreased input flow velocities. Along with its increased efficiency at higher ambient temperatures, these properties all point to NESMD as a promising solution for household- or community-scale desalination.

329 citations

Journal ArticleDOI
TL;DR: In this paper, a hybrid system based on a piece of carbon nanotube modified filter paper and a commercial Nafion membrane was employed to achieve a maximum solar thermal efficiency of up to 75% and derived extra electricity power of ∼1 W m−2 under one sun illumination.
Abstract: Solar-driven interfacial water evaporation, which concentrates solar heating at the water surface, has attracted increasing interest in pursuing highly efficient solar desalination. The rapid evaporation of water at the light absorber surface would induce a high concentration comparable with that of brine underlying the interface, which however has been paid much less attention and has never been proposed to produce electricity. Here in this work, we proved that, the theoretical real-time salinity power generated between the surface water and bulk seawater could be 12.5 W m−2 during steam production under one sun illumination. By employing a hybrid system based on a piece of carbon nanotube modified filter paper and a commercial Nafion membrane, we achieved a maximum solar thermal efficiency of up to 75% and derived extra electricity power of ∼1 W m−2 under one sun illumination. These results provide a novel avenue for blue energy utilization, demonstrating the potential for solar desalination and electricity generation under natural sunlight simultaneously.

326 citations

Journal ArticleDOI
TL;DR: In this article, Fraunhofer ISE is developing a solar thermally driven stand-alone desalination system for brackish water from wells or saltwater from the sea.

290 citations

Journal ArticleDOI
TL;DR: In this paper, various solar thermal desalination methods such as direct and indirect methods have been discussed The indirect methods are preferable for medium and large scale Desalination systems, whereas the direct methods employing the solar stills are more suitable for small scale systems.
Abstract: Most of the desalination systems are energy intensive, which consume high grade energy like gas, electricity, oil and fossil fuels These processes lead to carbon footprints, which causes depletion of ozone layer as well as health hazards on mankind It is also lead to global warming which is the burning topic and becomes threat to life sustainability The potential of harnessing solar energy is most efficient and effective for heat to heat conversion The thermal desalination is a low temperature application processes with one time investment for life time water production up to 10 to 15 years In this paper, various solar thermal desalination methods such as direct and indirect methods have been discussed The indirect methods are preferable for medium and large scale desalination systems, whereas the direct methods employing the solar stills are more suitable for small scale systems The performance of the low cost solar stills can be improved with simple modification by using various locally available materials These low cost stills can be easily and economically fabricated for meeting daily need of the fresh drinking water These low cost solar stills are sufficient for the small households and communities living in islands, coastal areas It can also be uses for distillation of brackish water for the population residing near river banks Such a system also suitable for the fluoride affected area to remove fluoride from the water The low cost solar stills are sufficient for removal of arsenic, mercury, cadmium, coliform, virus and bacteria

259 citations

Journal ArticleDOI
TL;DR: In this paper, an experimental study on water desalination using a solar still having phase change material (PCM) and connected to a solar collector was carried out, where the PCM is used to store solar thermal energy collected by the system at daytime as latent heat, to provide heat during night time thus continuous operation.

229 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20215
20201
20194
20187
201734
201630