Experimental evaluation on the capillarity effect of different wicking structure incorporated in a patterned absorber facilitating solar interfacial evaporation

Ashish, C. K.; Kumar, Chandan; Raj, Arun; Ubaidulla, C. T.; Inbaoli, A.; Jayaraj, S.

doi:10.1007/s10973-021-11185-4

Cited by 11 publications

(1 citation statement)

References 63 publications

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“…17 Wicking structures that provide sufficient flow of water across the evaporation surface via capillary action have been shown to avoid buildup of salt and other contaminants that might affect long term desalination efficiency. 18 Increases in the amount of sunlight absorbed for conversion to heat is a material consideration, and many light-to-heat conversion (or photothermal) materials have been developed. These range from carbonaceous materials [19][20][21] to thermally conductive polymers, 22,23 semiconductors, 24,25 and plasmonic nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Refractory Plasmonic Material based Floating Solar Still for Simultaneous Desalination and Electricity Generation

Margeson,

Atwood,

Lara de Larrea

et al. 2024

Preprint

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Established desalination technologies such as thermal distillation and reverse osmosis require advanced infrastructure and costly installation limiting their widespread implementation. Floating interfacial solar evaporation devices are considered a land-saving, environmentally friendly, and low infrastructure approach for freshwater production. Addressing issues related to maximum heat localization, prevention of salt accumulation and operating under stressful environmental conditions are some of the major challenges with floating solar desalination. This project presents an experimental demonstration of a plasmonic TiC nanoparticle-based floating solar still that can operate continuously under sunlight to produce clean water while floating on saline water sources. All materials, such as the PVC plastic condensation dome, EVA foam support, cotton wicks, and polyester filter fabric were chosen carefully to maximize the freshwater output of the solar still. The outdoor experiments were conducted in Halifax, Canada, where modest solar insolation of around 6 kW m-2 day-1 led to daily water yields up to 3.67 L m-2. The water can be produced at costs as low as $0.0086 L-1, and the solar still can be easily modified to generate thermoelectricity. This could allow for small onboard devices to test water quality without the need for an external electricity source. The results of this study will contribute to further development of floating solar desalination to provide potable water for water-stressed communities.

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Section: Introductionmentioning

confidence: 99%

Refractory Plasmonic Material based Floating Solar Still for Simultaneous Desalination and Electricity Generation

Margeson,

Atwood,

Lara de Larrea

et al. 2024

Preprint

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Experimental and numerical evaluation of the surface‐localized heating capacity of the photothermal nanocomposite‐incorporated knit fabrics

et al. 2023

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Personal protection and perspiration evaporation are major features of a functional clothing system intended for outdoor environment applications. The aim of this article is to investigate the dynamic performance of an advanced multifunctional textile under solar radiation. The influence of the fabric properties of the double‐layer structure and the optical property of the photothermal nanocomposite based‐porous membrane (polyacrylonitrile PAN/carbon nanotube CNT) on the evaporation performance were experimentally and numerically discussed. Initially, a dedicated experimental study was conducted to measure the actual evaporation performance of the functional fabric. Following this, a two‐dimensional multi‐fluid model, simulated using COMSOL software, is applicable to predict experimental evaporation rates with a reasonable accuracy of 90%. The results showed that the dense structure had a greater wicking‐flow rate of 0.5 cm2 s−1 but lower evaporation performance in contrast to the permeable fabric. The incorporation of the photothermal nanofibers into the double‐layer fabric structure enhanced the surface‐localized heating capacity. Through the evaporation process, compared to conventional fabric, the advanced fabric structure exhibited approximately 3.5–4.4°C higher outer surface temperature. We concluded that the proposed multi‐layer structure has excellent potential to enhance the solar absorption efficiency in the visible range by 50% on average. Besides, the improved evaporation performance of the functional structure was 48% and 55%, respectively, under 0.6 and 1.0 sun illumination. In addition to the clothing field, this study can be extended for wide‐reaching applications based on solar vapor generation systems.

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Experimental and Numerical Investigation of Solar Interfacial Evaporation Integrated with Thermoelectric Generators

Ragunath,

Kumar,

Chandran

2024

Recent Advances in Thermal Engineering

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Experimental evaluation on the capillarity effect of different wicking structure incorporated in a patterned absorber facilitating solar interfacial evaporation

Cited by 11 publications

References 63 publications

Refractory Plasmonic Material based Floating Solar Still for Simultaneous Desalination and Electricity Generation

Refractory Plasmonic Material based Floating Solar Still for Simultaneous Desalination and Electricity Generation

Experimental and numerical evaluation of the surface‐localized heating capacity of the photothermal nanocomposite‐incorporated knit fabrics

Experimental and Numerical Investigation of Solar Interfacial Evaporation Integrated with Thermoelectric Generators

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