Solar steam generation in fine dispersions of graphite particles

Kuzmenkov, D. M.; Delov, M. I.; Zeynalyan, K.; Struchalin, Pavel G.; Alyaev, Sergey; He, Yurong; Kutsenko, K.V.; Balakin, Boris V.

doi:10.1016/j.renene.2020.06.108

Cited by 10 publications

(4 citation statements)

References 38 publications

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“…Carbonization of the materials is a facile process to convert absorber materials into black, thus increasing the absorption of the incident light. [60,[110][111][112] Some researchers demonstrate the coating of various nanomaterials such as graphite, [113][114][115] multiwalled CNTs (MWCNTs), [116,117] graphene oxide, [118][119][120] reduced graphene oxide, [35,121] carbon dots, [37,38] quantum dots, [122,123] and other 2D materials. [124][125][126] Though the 2D materials and quantum dot-based solar absorbers provide comparatively higher solar evaporation efficiency, their higher cost and complexity in material processing always hinder its practical application for mass production.…”

Section: Fundamental Mechanism Of Photothermal Conversionmentioning

confidence: 99%

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

et al. 2022

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Food along with water, clothes, and shelter has long been considered as basic necessities for human life. [1] However, the reality is that people all around the globe continue to have difficulties in fulfilling their fundamental survival requirements. Rising population, unplanned urbanization, climate change, global energy, and natural resource crises are exacerbating these issues. Despite the fact that water covers more than three-quarters of the Earth's surface, providing fresh water as a fundamental requirement in certain drought-prone areas remains a problem. [2,3] Reducing the conflict between demand and availability for fresh water has become a significant problem in recent decades. According to World Health Organization (WHO), a shortage of freshwater resources may impact half of the world's population in the near future. [4,5] As a result, reliance on nontraditional sources, that is, purification of saltwater, sewage, and industrial effluents, must be increased to ease pressure on conventional water sources. [6][7][8] However, excessive levels of germs and hard particles in water from nontraditional sources may induce illnesses such as typhoid, jaundice, cholera, dysentery, and others. [9] Nevertheless, identifying alternative freshwater sources and implementing sustainable techniques for reusing and recycling water from unconventional sources may be a viable way to address the worldwide problem of freshwater shortage.Recent research on the generation of freshwater has revealed that methods such as reverse osmosis, electrodialysis, thermal desalination, and multiple-effect distillation need a high consumption of fossil fuels, a substantial initial investment, and the emission of polluting gas. [10][11][12] Thus, an interfacial solar-driven steam generation (ISSG)-based system is always recommended as a good candidate for seawater desalination, sterilizing, and wastewater treatment owing to its sustainability, cost-effectiveness, environmental friendliness, as well as ease of operation. In contrast to the natural water evaporation system, the ISSG-based system uses the heat localization method to heat only the portion of water which is associated with the airÀwater interface rather than the bulk water, substantially increasing the water evaporation rate. This technique utilizes the radiant heat from the sun with the assistance of photothermal energy conversion material, making it a promising sustainable solution to the water crisis. Furthermore, with proper design, heat loss can be minimized, allowing this technique to generate enough steam for water desalination, purification, and many other applications. [13][14][15][16][17][18][19] The selection of photothermal energy conversion materials for the ISSG mainly depends on the material's optical absorption spectra, photothermal conversion efficiency, sustainability, and duration of transmitting water to the heating surface (Figure 1). Researchers have investigated many naturally processed materials and nanoparticles (NPs) to design an efficient

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Section: Fundamental Mechanism Of Photothermal Conversionmentioning

confidence: 99%

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

et al. 2022

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“…The suspensions were prepared using the conventional two-step method, which is usually used to produce nanofluid [22,23]. First, the initial dry nanopowder was added into the base fluid, and then the resulting suspension was mixed using an ultrasonic homogenizer MEF93.T from MELFIZ (Moscow, Russia).…”

Section: Nanoparticles and Fluidsmentioning

confidence: 99%

Solar-Driven Desalination Using Nanoparticles

et al. 2021

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Due to the high light absorption and the possibility of localizing boiling to the interior of the receiver, nanoparticles are promising for solar-driven desalination. The paper presents an experimental study of the nanoparticle-based photothermal boiling of water with sea salt. The experiments were carried out using a laboratory-scale system with a transparent photothermal receiver of light and a closed condensate cycle. In this study, we tested three types of nanoparticles: multiwall carbon nanotubes with two main sizes of 49 nm and 72 nm, 110 nm iron oxide particles Fe3O4, and a commercial paste based on carbon nanotubes. The concentration of nanoparticles was varied up to 10% wt. We found that the nanoparticles enhance the steam generation by 23%, relative to a conventional desalinator with a black-body receiver. The best result was obtained for the 5% wt. concentration of carbon nanotubes.

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“…An experimental study was conducted using a laboratory-scale system and three types of nanoparticles (multi-wall carbon nanotubes, iron oxide particles, and a commercial paste based on carbon nanotubes) at various concentrations. Also, in their another paper 14 , these researchers aimed to develop an experiment and theory that describes the photothermal boiling in aqueous suspensions of graphite.…”

Section: Introductionmentioning

confidence: 99%

Exploring the use of nanofluids in pump-free systems for solar thermal applications

Kosinska,

Balakin,

Kosinski

2023

Sci Rep

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By using nanofluids as a working fluid in pump-free designs, thermal energy systems can become more efficient and have reduced maintenance costs, ultimately extending the system’s lifespan. In this paper, our goal is to investigate unsteady phenomena in the irradiation process and highlight their significance. To accomplish this, we conducted a series of experiments using a square loop of glass pipes filled with carbon black nanofluids and irradiated with a halogen lamp to simulate solar irradiation. The resulting convective motion of the nanofluids allowed us to observe the performance of different concentrations of carbon black, with 0.005–0.01 wt.% proving to be the most effective. Additionally, we identified unsteady processes that occur at the beginning of the process or when the irradiation changes. Finally, we employed computational fluid dynamics simulations to gain further insight into these phenomena.

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Solar steam generation in fine dispersions of graphite particles

Cited by 10 publications

References 38 publications

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

Solar-Driven Desalination Using Nanoparticles

Exploring the use of nanofluids in pump-free systems for solar thermal applications

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