Solar evaporation performance of 3D-printed concave structures filled with activated carbon under low convective flow

Fillet, R.; Nicolas, Vincent; Celzard, Alain; Fierro, Vanessa

doi:10.1016/j.cej.2022.141168

Cited by 19 publications

(5 citation statements)

References 35 publications

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“…Conversely, at the rear, transfers are lower, with a minimum value at the top and a maximum at the bottom. This disparity can be attributed to vortex formation behind the structures, as reported in a previous study [7]. Overall, most exchanges occur on the sides of the geometry, contributing to the linear increase in total surface area shown in figure 2a.…”

Section: Mass Transfer Of the Different Structuressupporting

confidence: 67%

“…Five geometries were studied: a 2D flat surface and four 3D structures, namely an inverted cone, a sphere and a paraboloid of revolution, with or without perforations. Detailed information about the materials can be found in a previous publication [7].…”

Section: Evaporation Materialsmentioning

confidence: 99%

“…Figure 2a shows the evaporation rate of the four structures studied in [7], serving as the basis for the current model. The structures are depicted along with their specific concavity and corresponding evaporation performance, represented by the evaporation rate.…”

Section: Mass Transfer Of the Different Structuresmentioning

confidence: 99%

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Numerical study of solar evaporation in 3D-printed structures

Fillet,

Nicolas,

Celzard

et al. 2024

J. Phys.: Conf. Ser.

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In this study, we used three-dimensional (3D) printed concave geometries filled with activated carbon to create a unique 3D solar evaporator for clean water production. The evaporation process was modeled considering airflow and solar radiation to investigate the advantages of 3D concave geometries. This work encompasses a series of studies, focusing on mass transfer inside the concavity and around the structure, to elucidate specific exchange points. Additionally, the research explores the effects of air velocity and the incorporation of additional holes within the structure, with the aim of improving evaporation.

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Section: Mass Transfer Of the Different Structuressupporting

confidence: 67%

Section: Evaporation Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Numerical study of solar evaporation in 3D-printed structures

Fillet,

Nicolas,

Celzard

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…The whole evaporation system realizes multi-energy input, which is reversely gained from the environment. What is more, a huge improvement of evaporation rate could be achieved under air convection . The evaporator exhibits a high porosity structure because the ultrathin water layers are independent of each other.…”

Section: Introductionmentioning

confidence: 99%

“…What is more, a huge improvement of evaporation rate could be achieved under air convection. 54 The evaporator exhibits a high porosity structure because the ultrathin water layers are independent of each other. The improvement of the evaporation rate of 3D UWE-F with high porosity under 2 ms −1 air convection is over 3 times larger than that of common 3D evaporators.…”

Section: ■ Introductionmentioning

confidence: 99%

Ultrathin Water Layer Conservation by “Nano-forest” in a Three-Dimensional Interface Regulates Energy Flow to Boost Solar Evaporation

et al. 2023

Environ. Sci. Technol.

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Solar-driven interfacial evaporation technology utilizes materials to form a thin layer on the water’s surface, absorbs sunlight on this layer, completes the light-to-heat conversion, heats up the water, and vaporizes it. This greatly reduces energy loss to bulk water and greatly improves the evaporation rate for producing clean water. Additionally, three-dimensional (3D) evaporators are increasingly being applied in this field, and the cold surface generated by the rapid evaporation in the 3D evaporator can utilize environmental heat to achieve a net energy gain for the system. Both strategies improve the evaporation rate of the system, but 3D materials typically have high water contents and cannot avoid energy flow into non-evaporated water. To address this, we introduce the advantages of interfacial evaporation into 3D evaporation by constructing an evaporator with a highly conductive copper core skeleton and an outer layer of ultrathin water and by reasonably constructing interconnected evaporation frameworks. Investigating and optimizing the mutual influence of the ultrathin water layer on the framework, an evaporator with 40 pores per inch (ppi) can reach a maximum of 24.4 kg·m–2 h–1, indicating that 3D interfacial evaporators with ultrathin water layers concentrate energy flow to stimulate high evaporation rates. This strategy will promote the development of photothermal evaporation technology.

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Interfacial Solar Evaporation: From Fundamental Research to Applications

Wu,

Lu,

Ren

et al. 2024

Advanced Materials

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In the last decade, interfacial solar steam generation (ISSG), powered by natural sunlight garnered significant attention due to its great potential for low‐cost and environmentally friendly clean water production in alignment with the global decarbonization efforts. In this review, we aim to share the knowledge and engage with a broader readership about the current progress of ISSG technology and the facing challenges to promote further advancements towards practical applications. The first part of this review assesses the current strategies for enhancing energy efficiency of ISSG systems, including optimizing light absorption, reducing energy losses, harvesting additional energy, and lowering evaporation enthalpy. Subsequently, we elucidate the current challenges faced by ISSG technologies, notably salt accumulation and bio‐fouling issues in practical applications and discuss contemporary methods to overcome these challenges. In the end, we introduce potential applications of ISSG, ranging from initial seawater desalination and industrial wastewater purification to power generation, sterilization, soil remediation, and innovative concept of solar sea farm, highlighting the promising potential of ISSG technology in contributing to sustainable and environmentally conscious practices. Based on the review and in‐depth understanding of these aspects, we propose the future research focuses to address potential issues in both fundamental research and practical applications.This article is protected by copyright. All rights reserved

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Solar evaporation performance of 3D-printed concave structures filled with activated carbon under low convective flow

Cited by 19 publications

References 35 publications

Numerical study of solar evaporation in 3D-printed structures

Numerical study of solar evaporation in 3D-printed structures

Ultrathin Water Layer Conservation by “Nano-forest” in a Three-Dimensional Interface Regulates Energy Flow to Boost Solar Evaporation

Interfacial Solar Evaporation: From Fundamental Research to Applications

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