Effect of fins and silicon dioxide nanoparticle black paint on the absorber plate for augmenting yield from tubular solar still

Purpose This study aims to investigate the effect of porous material (clay pots) and it is facing on the productivity performance of a pyramid type solar still. The clay pots are placed in the basin facing up and facing down. The numbers of clay pots considered were 9 and 25, and its performance was compared with normal (0 clay pots) solar still. Design/methodology/approach The pyramid solar water distillation system has been designed, fabricated and tested under the actual environmental conditions of Kanchikacherla (16.6834 0N, 80.3904 0E), Andhra Pradesh, India. The solar still is used to produce the fresh water and hot water simultaneously from the brackish (i.e. containing dissolved salts) feed water for domestic applications. From open literature, it was established that the rate of evaporation is higher when the flowing water is held for a longer duration on the black color absorber plate, thereby leading to an increase in productivity of freshwater. Therefore, the pyramid solar still has been tested for smooth absorber plate and the absorber plate with porous heat storage material. Findings The porous material increases the production rate of freshwater compared to a base plate. However, the pyramid still with clay pots has higher productivity at a lower temperature because of the porosity effect. Originality/value The total dissolved solids, electrical conductivity and pH of the distilled water and the saline water have also been measured and compared.

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Optimization Study of Tilt Angle for Single Slope Solar Still

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.37283 ◽

2021 ◽

Vol 9 (VIII) ◽

pp. 161-167

Author(s):

Onkar Joshi

Keyword(s):

Rural Communities ◽

Tilt Angle ◽

Potable Water ◽

Cost Effective ◽

Solar Still ◽

Copper Sheet ◽

Black Paint ◽

Optimization Study ◽

Rate Of Evaporation ◽

Effective Design

Water is essential to life. The origin and continuation of mankind is based on water. The supply of drinking water is an important problem for the developing countries. The wooden box has a thickness of 8mm. It consists of a top cover of transparent glass with a tilt of 18°, 26° and is coated with black paint to absorb the maximum possible solar energy. The yield of the single basin solar still is very less and it increases considerably when the solar still was built with copper sheet. An analysis of single slope solar still has done on different tilt angle to optimizing study of tilt angle. They greatly improve the rate of evaporation and the rate of condensation on the cooler surface. The efficiency is higher for solar still made up of copper sheet and its output we have got 1.24 for 18° angle. The optimized tilt angle gave more efficiency than other tilt angle. The optimize water depth is 18mm for 18° angle. This cost-effective design is expected to provide the rural communities an efficient way to convert the brackish water in to potable water.

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Experimental Studying Nanofluid Thermal Transfer In Microchannel

Siberian Journal of Physics ◽

10.54362/1818-7919-2016-11-2-5-11 ◽

2016 ◽

Vol 11 (2) ◽

pp. 5-11

Author(s):

Vladimir Aniskin ◽

Valeriy Rudyak

Keyword(s):

Silicon Dioxide ◽

Transfer Coefficient ◽

Volume Fraction ◽

Micro Channel ◽

Thermal Transfer ◽

Nanoparticles Volume Fraction ◽

Inner Diameter ◽

Average Size ◽

Silicon Dioxide Nanoparticle ◽

Base Liquid

In paper new setup for studying the thermal transfer of nanofluid in the steel micro-channel with inner diameter 358 microns is described. Setup testing carried out by means of known experimental data about thermal transport of the water. Then the data about the thermal tranfer coefficient of the water based nanofluids with silicon dioxide nanoparticle with average size 25 nm are discussed. It was shown that nanofluids have the thermal transfer coefficient much more than that of base liquid. The enhancement of the thermal transfer coefficient of one-percent nanofluid is about 60 %. This enhancement grows with increasing of the nanoparticles volume fraction and flow rate of the nanofluid.

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