Theoretical analysis of a basin type solar still with internal and external reflectors

Tanaka, Hiroshi; Nakatake, Yasuhito

doi:10.1016/j.desal.2006.01.017

Cited by 145 publications

(41 citation statements)

References 9 publications

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“…According to the theoretical analysis done by Tanaka and Nakatake (2006), it is evident that distillate output can be increased up to 48% when internal and external reflectors are added. Hiroshi Tanaka had also done an experimental analysis of a basintype still with internal and external reflectors in winter at Japan, which showed the similar outcome (Tanaka 2009).…”

Section: External and Internal Reflectorsmentioning

confidence: 99%

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

et al. 2017

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Pure and fresh water is being scarce day by day. Although Bangladesh is a riverine country, pure drinking potable water is not a cheap commodity. Most of the people in the cities boil water to drink, and people of the villages take tube-well's water directly, which might have high amount of heavy metal like arsenic. Solar still is a cheap and very useful renewable technology, which can be used in Bangladesh extensively everywhere at the rooftop as a pure water source. Objective of this paper was to find a low cost portable and easily maintainable passive solar still for southern part of Bangladesh. All the parameters of passive solar still are studied, and it is found that an inclined stepped solar still with passive condenser, internal and external reflectors, black cotton wick, and with optimum design values can be the desired still, which would give maximum yield. Finally, the optimum values of the parameters are used to propose a cheap design.

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Section: External and Internal Reflectorsmentioning

confidence: 99%

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

et al. 2017

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“…Recently, many studies on the effect of flat plate external reflectors on basin-type stills have been reported [24][25][26][27][28][29][30][31][32][33][34][35][36][37], although few reports had been presented before the year 2000 [38][39][40]. The results showed that an external reflector can increase the solar radiation absorbed on the basin liner as well as the distillate productivity of the still if the reflector angle is set properly.…”

Section: Introductionmentioning

confidence: 88%

Theoretical Analysis of the Effect of a Bottom Reflector on a Vertical Multiple-Effect Diffusion Solar Still Coupled with a Basin-Type Still

Tanaka

2013

Advances in Mechanical Engineering

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The effect of a flat plate bottom reflector on a vertical multiple-effect diffusion solar still coupled with a basin-type still is analyzed theoretically at 30 ∘ N latitude. The still has a right-angled triangular cross-section consisting of a horizontal basin liner, a sloping double glass cover, and the vertical multiple-effect diffusion still (multiple-effect section) at the vertical rear wall. A geometrical model was constructed to calculate the amount of solar radiation reflected by the reflector and absorbed on both the basin liner and the first partition of the multiple-effect section. The reflected radiation from the reflector can be a thermal input to the multipleeffect section both in cases where the reflected radiation is absorbed on the basin liner and on the first partition. It is predicted that the overall daily productivity of the still can be increased about 16%, 13%, and 29% on the spring and autumn equinoxes, the winter solstice, and the summer solstice, respectively, by adding the external reflector and setting the reflector inclination to the proper angle according to seasons.

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“…Transmissivity of the glass cover, s gd (b) is the function of the glass cover angle, b, and may be presented as [18].…”

Section: Scope Objective and Methodologymentioning

confidence: 99%

“…Experimental and theoretical studies were performed for single slope solar still [1][2][3][4][5][6][7][8][9][10][11], these studies were investigated for different climate conditions, also at different periods of the year as well as all a year investigation. The performance of double slope solar still was performed experimentally and theoretically by many researches [12][13][14][15][16][17][18], their studies were concerned with the effect of inclination angle of the glass cover on its performance for different locations and orientation of the solar still.…”

Section: Introductionmentioning

confidence: 99%

An approach to optimization of double slope solar still geometry for maximum collected solar energy

El‐Maghlany

2015

Alexandria Engineering Journal

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This investigation represents the optimum inclination angles of the glass cover of the double slope solar still, and orientation for maximum collected solar energy that could be captured by the solar still glass cover. The results will be displayed for different latitudes (/ = 24°, / = 27.2°, / = 30°and / = 31.2°) to cover Egypt geographically. The double slope solar still has two opposite inclined surface; so it has two surfaces azimuth angles (c 1 and c 2 ) according to |c 1 | + |c 2 | = 180°, with opposite signs, these values are (c 1 = 0°and c 2 = 180°), (c 1 = 90°a nd c 2 = À90°), (c 1 = 45°and c 2 = À135°) which is equivalent to (c 1 = À45°and c 2 = 135°); consequently, the total energy is the summation of the collected energy by the two surfaces represents the double slope solar still surface area. The inclination angle (b) is changed from 10°to 60°on both sides of the glass cover to get independently the optimum inclination angles for each side that not necessary to be the same. ª 2015 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Theoretical analysis of a basin type solar still with internal and external reflectors

Cited by 145 publications

References 9 publications

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

Theoretical Analysis of the Effect of a Bottom Reflector on a Vertical Multiple-Effect Diffusion Solar Still Coupled with a Basin-Type Still

An approach to optimization of double slope solar still geometry for maximum collected solar energy

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