Performance assessment of a solar still using blackened surface and thermocol insulation

Sahoo, Bibhuti Bhusan; Sahoo, Naresh Kumar; Mahanta, Pinakeswar; Borbora, L.; Kalita, Pankaj; Saha, Ujjwal K.

doi:10.1016/j.renene.2007.09.009

Cited by 66 publications

(22 citation statements)

References 14 publications

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“…Optimization of insulation thickness can be made for the proposed model for better performance. Sahoo et al (2008) experimentally investigated the performance (removal of fluoride contaminants from drinking water) and efficiency of solar still using blackened basin surface and thermocol insulation. A reduction of 92-96 % fluoride from sample water and an increase of 4.69 and 6.05 % in efficiency were observed using blackened basin liner and blackened basin liner with bottom and side thermocol insulation.…”

Section: Effect Of Insulationmentioning

confidence: 99%

A comprehensive decade review and analysis on designs and performance parameters of passive solar still

Manchanda¹,

Kumar²

2015

Renewables

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The simplest and easily accessible type of solar distillation is passive solar still which utilizes freely and abundantly available sun energy for removal of salinity/impurity from saline/brackish water. The main drawback of passive solar still is its lower efficiency and distillation output. Different designs of passive solar stills are fabricated and tested by various researchers to meet water demand economically. Concave wick basin pyramidal-shaped solar still was observed to produce 4.0 l/m 2 /day average distillate with a cost of 0.065$/l. Double basin solar still showed an average of 85 % higher yield than single basin still. Stepped type, inclined, tubular, pyramidal, spherical, and hemispherical shapes were considered an efficient designs of passive solar still. Numbers of parameters such as water depth, solar radiation, ambient conditions, condensing cover material, its cooling and direction, internal and external reflectors, sun tracking system, wicks, thermal and energy storage materials were outlined which highly affect the performance of solar still. Water depth of 0.04 m and condensing cover inclination to latitude of the place were observed optimum operational parameters. A distillate output of 4.3 l/m 2 was collected with cotton gauge top cover cooling to V-type solar still. Increase of 75 % in productivity and 56 % in daily efficiency was observed with internal reflector stepped solar still. An improvement of 380 % was observed in stepwise basin solar still integrated with sun tracking system. Despite large efforts carried out on passive solar distillation, there are some challenges like bulkiness, high initial cost, and optimization of spacing between condensing cover and water surface of inclined still, thermophysical properties of basin material, flow rate, insulation material and its thickness, which need to be improved to make this technique efficient in practical utilization. This review paper mainly presents the results of previous work carried out on the designs, operational and process parameters affecting distillation, cost analysis, further scope of improvement in preceding work along with their limitations. The decade reviews on solar stills based on different context authored by many researchers have also been summarized. Moreover, this review paper will help the researchers to understand the basics of solar still with the need, developments and challenges in passive solar distillation to improve its thermal performance.

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Section: Effect Of Insulationmentioning

confidence: 99%

A comprehensive decade review and analysis on designs and performance parameters of passive solar still

Manchanda¹,

Kumar²

2015

Renewables

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“…Bhuiyan et al, studied the economics of stand-alone photovoltaic power system to test its feasibility in remote and rural areas of Bangladesh and compared renewable generators with nonrenewable generators by determining their life cycle cost using the method of net present value analysis and showed that life cycle cost of PV energy is lower than the cost of energy from diesel or petrol generators in Bangladesh and thus is economically feasible in remote and rural areas of Bangladesh [20].…”

Section: Photovoltaicsmentioning

confidence: 99%

Various Aspects of Solar Energy Utilization: Review

Hajian¹

2013

IJAST

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“…Moisture rises and the water vapour condenses when it reaches the cool glass or plastic cover. The water droplets run down into a collection trough to give salts, minerals, germs and impurities free pure water Sahoo et al (2008).…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Solar Still by Using Reflectors-Jute Cloth-Improved Glass Angle

Sahoo

Subudhi²

2019

Jou. Eng. Res.

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This paper is aimed to improve the productivity of an existing conventional single slope solar still with modifications. In this study, the conventional solar still is modified by using reflectors, jute cloth and improved glass angle. The modified still productivity and performance are investigated experimentally and compared to that of conventional solar still. The results demonstrated that solar still performance is improved with the 10o glass angle due to better water flow properties and higher solar radiation fall on the still. The results reveal that, with all combined modifications, the water productivity and efficiency of modified solar still increase by 72.18% and 41.51% respectively more than the conventional one. This implies that modified solar still could be adopted for higher water productivity at a lower additional cost.

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Performance assessment of a solar still using blackened surface and thermocol insulation

Cited by 66 publications

References 14 publications

A comprehensive decade review and analysis on designs and performance parameters of passive solar still

A comprehensive decade review and analysis on designs and performance parameters of passive solar still

Various Aspects of Solar Energy Utilization: Review

Performance Enhancement of Solar Still by Using Reflectors-Jute Cloth-Improved Glass Angle

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