Performance study on solar still with enhanced condensation

Kumar, K. Vinoth; Bai, R. Kasturi

doi:10.1016/j.desal.2007.11.015

Cited by 165 publications

(24 citation statements)

References 27 publications

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“…This could simply be attributed to water dripping from the alga onto the pads, though Porphyra thalli is known to rapidly dehydrate when air exposed (40% water loss after 30 min; see [59]) and they were externally dry when the experiment was set up. As a possible alternative explanation, we posit that Porphyra thalli laying flat at the surface of the mussel bed during low tide could be acting as "condensation traps", analogous to those made by humans for water collection and purification in arid regions (e.g., [60,61]). Specifically, we predict that moisture will evaporate as the air within the mussel bed heats up leading to vapor accumulation and condensation at the undersides of Porphyra thalli.…”

Section: Effects Of Porphyra Cover On Desiccation and Temperaturementioning

confidence: 99%

Algal Epibionts as Co-Engineers in Mussel Beds: Effects on Abiotic Conditions and Mobile Interstitial Invertebrates

2019

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Mussels and macroalgae have long been recognized as physical ecosystem engineers that modulate abiotic conditions and resources and affect the composition of rocky shore assemblages. Their spatial distributions in the intertidal zone frequently overlap, as many algal species thrive as epibionts on mussel beds. Nonetheless, their potential for combined engineering effects has not been addressed to date. Here we illustrate that Porphyra sp.-a desiccation-resistant macroalga that develops mostly epiphytically onto mussel beds-affects temperature, desiccation levels, and mobile interstitial invertebrates in mussel beds. Specifically, we observed that Porphyra cover (a) reduced temperature at the surface of the mussel bed but not at their base, (b) reduced desiccation both at the surface and base of the mussel bed and, (c) increased the densities of an abundant interstitial species-the amphipod Hyale grandicornis-in several study sites/dates. Additionally, we found that the positive responses of these grazing amphipods to Porphyra were driven by physical habitat modification (engineering) rather than food availability. This suggests that co-engineering by Porphyra and mussels generates abiotic states and focal species responses that would not be predictable from their individual effects. We expect that increased appreciation of co-engineering aids our understanding of complex ecological dynamics.

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Section: Effects Of Porphyra Cover On Desiccation and Temperaturementioning

confidence: 99%

Algal Epibionts as Co-Engineers in Mussel Beds: Effects on Abiotic Conditions and Mobile Interstitial Invertebrates

2019

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“…Vinothkuumar and Kasturibai [1] stated that around 97% of the water in the world is in the ocean, approximately 2% is stored as ice in polar region and 1% is fresh water available for the need of the plants, animals and human life. Alarms have recently been sounded about Egypt's limited water resources.…”

Section: Introductionmentioning

confidence: 99%

Improving the double slope solar still performance by using flat-plate solar collector and cooling glass cover

2015

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“…The frame that supports the glass/plastic cover has to be robust and cling to the ground to withstand inclement weather, such as sand storms, but some of its parts must be removable to allow The cover is usually of glass, and less often of plastic films. Glass covers have the drawback of being breakable and, according to the authors of [3], should have a hematite content lower than 0.01%. Plastic covers can be made of treated polyvinylchloride and tetraphalate-polyethylene; their durability is less than 15 years, and their adaptability to any desired shape of the distiller is the highest of their class [1].…”

Section: Overviewmentioning

confidence: 99%

Assessment of the Use of Solar Desalination Distillers to Produce Fresh Water in Arid Areas

et al. 2019

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Water is an important resource for human beings, yet there are inhabited places tormented by the scarcity of it. The present study is concerned with places where, seemingly, the best way to get water is through solar distillers. These places should have, typically, high values of solar irradiation and a lack of human and economic resources to build and operate complex equipment. A set of sites scattered around the world was chosen, and then the presumed productivity and thermal efficiency that solar distillers would have if they were installed at these places was calculated. The mathematical model used with this purpose assumes steady state operation; the values of mass of water distilled and distiller efficiency were calculated for every hour, but the results presented are annual averages. Then, an economic study was made based on local costs of construction materials for the distillers, the work force, and the prices of water to predict the payback time of solar distillers. Finally, a study on environmental impact, particularly in terms of greenhouse gas (GHG) emissions, was made to compare reverse osmosis (RO) with solar distillation. For the sites studied, typical values of annual water output are in the range of 414 dm3/m2, for Évora, up to 696 dm3/m2, for Faya Largeau; the minimum efficiency was found for Évora, as 11.5%, and the maximum efficiency was found for Tessalit, as 15.2%. Payback times are very high, regardless of the areas of the globe where solar distillers are implanted. Regarding the GHG emissions, solar distillation is preferable to RO.

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Performance study on solar still with enhanced condensation

Cited by 165 publications

References 27 publications

Algal Epibionts as Co-Engineers in Mussel Beds: Effects on Abiotic Conditions and Mobile Interstitial Invertebrates

Algal Epibionts as Co-Engineers in Mussel Beds: Effects on Abiotic Conditions and Mobile Interstitial Invertebrates

Improving the double slope solar still performance by using flat-plate solar collector and cooling glass cover

Assessment of the Use of Solar Desalination Distillers to Produce Fresh Water in Arid Areas

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