Design and Thermal Performance Analysis on Solar Still

Subhani, Shaik; Kumar, R.

doi:10.1007/978-981-15-4488-0_60

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Subhani and Senthil Kumar 86 altered the condensing surface of a conventional solar still by using several hemispherical slopes. Assessment of flow and heat transfer was done for single‐slope solar still and hemispherical solar stills with constant and fluctuating temperature variations.…”

Section: Enhancing Performance Of Solar Stillsmentioning

confidence: 99%

Enhancing performance of solar stills ‐ A review

Sinha,

Venkatesh,

Kumar

2024

Env Prog and Sustain Energy

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Solar stills can be an easy and environmentally viable solution in today's world, where a lack of fresh water sources is a major challenge. Solar stills, on the other hand, aren't economically viable due to their poor efficiency. It has been the subject of several studies to improve its efficiency and output. The goal of this review article is to understand and summarize recent studies conducted to improve the efficiency and commercial viability of solar stills. It focuses on using experimental and numerical techniques to manipulate different parameters that affect freshwater production in stills in order to arrive at a suitable condition where the efficiency and productivity of the solar still are maximized. Effects of modifications such as addition of baffles, fans, fins, phase change material (PCM), etc., and its consequent influence on freshwater production rate are presented in this article. Fins, for example, improved the efficiency of solar still by about 40% and productivity by about 16%. PCMs too increased the productivity rate by around 50%–90% depending on the type of PCM used. Baffles were found to be more effective when they were mounted closer to the front wall of the solar still. The findings and conclusions of all the studies are summarized. This review article aims to provide an overview of solar stills and the various modifications that may be done to improve their overall efficiency.

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Section: Enhancing Performance Of Solar Stillsmentioning

confidence: 99%

Enhancing performance of solar stills ‐ A review

Sinha,

Venkatesh,

Kumar

2024

Env Prog and Sustain Energy

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“…As a result, the modified stepped basin solar still outperforms the standard single-slope solar in terms of heat transmission. When there is a divergence of the flow pattern produced previously [24,25], the vortices formed with increased velocity aid in more heat transfer and boost the performance of the solar still. By increasing the temperature difference between the evaporating and condensing surfaces from 5 °C to 25 °C, a gradual decrease in the rate of convective heat transfer near the base plate and a constant increase near the first step as the magnitude of vorticity increases with the same non-uniform vortices is observed as shown in Figure 11.…”

Section: Performance Analysis Of Stepped Basin Modified Still Under V...mentioning

confidence: 99%

Convection heat transfer of stepped basin single slope solar still: A numerical investigation

Varun

Subhani

Kumar

2023

JMES

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Solar-powered desalination is a quick and easy way to make drinking water. Numerous solar distillation systems have been investigated for various parameter modifications based on local resource availability. In this work, a solar still with a modified stepped basin is investigated to raise the rate of internal evaporation and, therefore the output yield of the solar still. Stepped basin solar stills are taken into consideration for the study since they are very effective because the water's surface exposure to radiation is greater. Thus, increasing the rate of internal water evaporation enhances the rate of convective heat transfer between the evaporating and condensing surfaces, leading to improved and consistent output. The two-dimensional stepped basin single slope solar still was investigated and contrasted with the traditional single slope still in terms of heat transfer and fluid dynamics. To optimize the configuration for better performance in various types of climatic and operational circumstances that imitate the scenario of daily life, design elements such as the number of steps and the different heights of the basin are also taken into account. Each step was added with far more success than the one before it, up until the length was reduced to 1.16% of the entire shorter length. This numerical study enables us to draw the conclusion that the rise in natural heat transfer rate with the addition of steps is mostly caused by the increased surface area and the inherently restrictive nature within the domain. Additionally, with an increase in Rayleigh number, Ra, the gradient variations of the traditional single slope solar still overheat transfer features have been greatly regulated and successfully raised for the modified stepped basin Solar still.

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Design and Thermal Performance Analysis on Solar Still

Cited by 2 publications

References 11 publications

Enhancing performance of solar stills ‐ A review

Enhancing performance of solar stills ‐ A review

Convection heat transfer of stepped basin single slope solar still: A numerical investigation

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