An experimental study on a hemispherical solar still

Arunkumar, T.; Jayaprakash, R.; Denkenberger, David; Ahsan, Amimul; Okundamiya, Michael S.; Kumar, Sanjay; Tanaka, Hiroshi; Aybar, Hikmet Ş.

doi:10.1016/j.desal.2011.11.047

Cited by 241 publications

(67 citation statements)

References 25 publications

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“…Arunkumar [5] did experimental study on hemispherical solar still. In experimental setup shown in fig.…”

Section: Geometric Configurationsmentioning

confidence: 99%

REVIEW OF EFFECT OF GEOMETRY & USE OF NANOFLUIDS ON PERFORMANCE OF SOLAR STILL

2017

IJAERD

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“…Arunkumar [5] did experimental study on hemispherical solar still. In experimental setup shown in fig.…”

Section: Geometric Configurationsmentioning

confidence: 99%

REVIEW OF EFFECT OF GEOMETRY & USE OF NANOFLUIDS ON PERFORMANCE OF SOLAR STILL

2017

IJAERD

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“…The yield of solar still not only depends on glass water temperature difference, also it depends on wind velocity, ambient temperature and cover temperature. Arunkumar et al (2012) investigated a hemispherical cover solar still with and without cooling medium. From their study the effect of cooling the surface of cover improved the efficiency from 34-42% with a fixed flow rate of water as cooling medium at 10 mL minG 1 on the entire surface.…”

Section: Different Types Of Solar Stillmentioning

confidence: 99%

A Review of Different Solar Still for Augmenting Fresh Water Yield

Sathyamurt¹,

Samuel²,

Nagarajan³

et al. 2015

J. of Environmental Science and Technology

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Due to the greater growth of population and industrial developments especially from the early 20th century, people living in remote villages suffer with shortage of drinking water. People living in urban and rural areas depend on surface and ground water sources, where these sources are majorly polluted by industrial waste. The use of reverse osmosis technique and other conventional technique appears to be a costlier method and requires a very large land mass. An economical method of converting the saline water to portable water is by using solar energy. Solar still desalination is one method of converting saline water into potable water by evaporation and condensation. Many researchers carried out extensive studies on the solar still desalination technique and this paper communicates a detailed review about the existing desalination technique by solar energy.Key words: Solar still, economic, water source, energy, developments INTRODUCTIONEarth is almost covered with water of which 97% salt water, 2% trapped in the form of glaciers and polar ice caps and only 1% of water for drinking purpose for our survival. Plants, animals and human being need water to avoid dehydration, since dehydration kills faster than starvation. Consumption of unhygienic water cause health problems and even death and for a small scale production of fresh water in urban and rural areas solar desalination is the best method (Kumar et al., 2015;Arunkumar et al., 2015). As ground and surface water sources are depleting by continuous usage the need of drinking water is more. Figure 1 shows the major water sources of the world.There is a great need of fresh water for humans, as they are the important phenomenon in dayto-day life. Due to urbanization, industrialization and increase in population growth the need of drinking water is higher. The possible ways of getting pure water is from rivers, lakes, wells, rains etc, as these kinds must be purified consuming. The purification of water involves the removal of dissolved or microbes which can easily spread water borne diseases. The insoluble substances are removed by sand filtration and the microbes are killed through chlorination and by boiling. Solar desalination does all the three function. The another method of conversion of backrish water into purified water for drinking purpose is using membrane or phase change process of desalination. Earlier these process uses boiler to generate power or heat to drive the membrane process to get fresh water. In the current context, solar energy is used to drive these techniques using solar photo

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“…There have been various methods attempted to provide drinking water in rural areas of undeveloped nations using solar technologies, including: (i) solar desalination; (ii) solar detoxification; and (iii) solar disinfection [7,8]. These methods include the use of basic solar stills [9,10], solar stills with improved output from compound parabolic reflectors [11], phase change material [12], a hemispherical solar still [13], efficient heat exchange mechanisms [14] and an inclined wick solar still [15], and progressively more sophisticated variations of the solar water disinfection (SODIS) method [16], using common chemicals to decrease turbidity to enable SODIS to work [17] and photocatalysts [18]. SODIS is low-cost, simple, and is available for large geographic regions (e.g., from Haiti [19] to South Sudan [20]), but becomes less effective in high-turbidity water, which can be challenging in some communities [16].…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Polymer Heat Exchanger for Automated Household-Scale Solar Water Pasteurizer

Denkenberger

Pearce

2018

Designs

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Abstract:A promising approach to reducing the >870,000 deaths/year globally from unsafe water is flow-through solar water pasteurization systems (SWPs). Unfortunately, demonstrated systems have high capital costs, which limits access for the poor. The most expensive component of such systems is the heat exchanger (HX). Thus, this study focuses on cost optimization of HX designs for flow-through SWPs using high-effectiveness polymer microchannel HXs. The theoretical foundation for the cost optimization of a polymer microchannel HX is provided, and outputs are plotted in order to provide guidelines for designers to perform HX optimizations. These plots are used in two case studies: (1) substitution of a coiled copper HX with polymer microchannel HX, and (2) design of a polymer microchannel HX for a 3-D printed collector that can fit in an arbitrary build volume. The results show that substitution of the polymer expanded HX reduced the overall expenditure for the system by a factor 50, which aids in making the system more economical. For the second case study, the results show how future system designers can optimize an HX for an arbitrary SWP geometry. The approach of distributed manufacturing using laser welding appears promising for HX for SWP.

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An experimental study on a hemispherical solar still

Cited by 241 publications

References 25 publications

REVIEW OF EFFECT OF GEOMETRY & USE OF NANOFLUIDS ON PERFORMANCE OF SOLAR STILL

REVIEW OF EFFECT OF GEOMETRY & USE OF NANOFLUIDS ON PERFORMANCE OF SOLAR STILL

A Review of Different Solar Still for Augmenting Fresh Water Yield

Design Optimization of Polymer Heat Exchanger for Automated Household-Scale Solar Water Pasteurizer

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