Performance analysis of solar stills based on various factors affecting the productivity—A review

Velmurugan, V.; Srithar, K.

doi:10.1016/j.rser.2010.10.012

Cited by 236 publications

(72 citation statements)

References 51 publications

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“…Solar stills have been used for thousands of years, but have remained underutilized due to their low-efficiency (30-45%) and relatively high cost. [40][41][42] The basic design of the solar still uses a black-bottomed water basin to absorb the incoming solar flux. In such a configuration, radiative losses from the hot water are the largest source of losses, and cannot be avoided.…”

Section: Distributed Holes Layoutmentioning

confidence: 99%

Steam generation under one sun enabled by a floating structure with thermal concentration

et al. 2016

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Abstract:Harvesting solar energy as heat has many applications, such as power generation, residential water heating, desalination, distillation and wastewater treatment. However, the solar flux is diffuse, and often requires optical concentration, a costly component, to generate high temperatures needed for some of these applications. Here we demonstrate a floating solar receiver capable of generating 100°C steam under ambient air conditions without optical concentration. The high temperatures are achieved by using thermal concentration and heat localization, which reduce the convective, conductive, and radiative heat losses. This demonstration of a low-cost and scalable solar vapor generator holds the promise of significantly expanding the application domain and reducing the cost of solar thermal systems. Keywords: solar thermal, steam generation, thermal concentration, water treatmentThe sun is a promising and abundant source of renewable energy that can potentially solve many of society's challenges. Solar thermal technologies, i.e., the conversion of the sunlight to thermal energy, are being developed for many applications such as power generation, domestic water heating, desalination, and other industrial processes. [1][2][3][4][5][6][7] Steam and vapor generation is often desired in these applications, but the dilute solar flux (1000 W/m 2 ) does not provide enough power per unit area of the absorber to reach the required high temperatures and to compensate for the large latent heat of water vaporization. Optical

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Section: Distributed Holes Layoutmentioning

confidence: 99%

Steam generation under one sun enabled by a floating structure with thermal concentration

et al. 2016

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“…Therefore, both efficiency and economics need to be considered when choosing a desalination system. In a related study, an extensive review of solar stills was carried out Velmurugan & Srithar (2011 This low-grade heat is not useful to serve as a heat source for conventional distillation processes (Fahrenbruch and Bube, 1983;Kalogirou, 2005). Medium temperature collectors provide heat of more than 43˚C and include glazed flat plate collectors as well as vacuum tube collectors using air or liquid as the heat transfer medium.…”

mentioning

confidence: 99%

Today's and Future Challenges in Applications of Renewable Energy Technologies for Desalination

Goosen

Mahmoudi

Ghaffour

2014

Critical Reviews in Environmental Science and Technology

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Recent trends and challenges in applications of INTRODUCTIONAdequate and dependable fresh water resources are major issues confronting many nations worldwide (Maila, 2006;Goosen et al., 2011aGoosen et al., & 2011bHuang, 2010; Lund, 2007; Mahmoudi et al., 2010a Mahmoudi et al., & 2010b. With the world's energy demand increasing much research has been directed at overcoming these challenges and in particular in using renewable energy to help meet the power needs for water desalination (Huang, 2010; Lund, 2007; Mahmoudi et al., 2010a;Serpen et al., 2010). However, Goosen (2012) and Gottinger and Goosen (2012) argued that while development opens up and advances economies, and creates new wealth, millions are forced to struggle to make meaning of the darker side of development that is not environmentally sustainable. In the past, the world's ecosystems (i.e. air, land and water) were able to absorb the environmental damage resulting from extensive industrialization and development. Nevertheless, with the rapid increases in global population and industrialization, as well as enhanced demands on natural resources such as fresh water supplies, the earth is no longer able to sustain a healthy and balanced ecosystem (Laboy-Nieves, 2009; Laboy et al., 2009; Mahmoudi et al., 2010a Mahmoudi et al., , 2010b Misra, 2000). The sustainability of the society in which we live is determined not only by technical and economic progress, but also by environmental management (Abdulla et al., 2009; Gottinger and Goosen, 2012; Laboy et al., 2010; Maila, 2006). Sustainable development using more renewable energy sources, by improving energy efficiency and reducing water demand and waste production is now considered by many as being the model to follow (Goosen et al., 2004; Goosen, et al., 2009aGoosen, et al., , 2009b Misra, 2000). Elimelech and Philip (2011), for example, reported on the possible reductions in energy demand by desalination technologies, and the role of innovative technologies in improving the sustainability of desalination as a technological solution to global water shortages ( Figure 1). They argued that future research to improve the energy efficiency of desalination should focus on, for example, the pre-treatment and posttreatment stages of seawater reverse osmosis (SWRO) plants. Furthermore, Peñate & García-Rodríguez (2012a) presented a comprehensive review of the main innovations and future trends in the design of SWRO desalination technology with an emphasis on improving process performance and efficiency. They concluded that desalination with renewable energies is an attractive combination that will help to reduce stress on existing water supplies.The economic potential and environmental benefits of renewable energies, such as geothermal, solar, wave and wind, and their applications to reducing overall energy requirements have been described in a number of recent articles (Cataldi, et al., 1999;Huang, 2010;Goosen et al., 2011b; Lund, 2007; Mahmoudi et al., 2010a;Serpen et al., 2010;Stefansson, 2005)....

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“…The production volume for a simple type solar still is only between 2-5 /m 2 /day. This makes the solar stills uneconomic compared to the other conventional distillation systems [1].Many researchers have reviewed, comprehensively, the latest work on solar stills such as classification [2],design [3], improvement techniques [4], passive [5], active [6], inclined [7], stepped [8], wick type [9], and condensers with solar stills [10]. There is no specific manageable survey on solar stills with reflectors.…”

Section: …………………………………………………………………………………………………… Introduction:-mentioning

confidence: 99%

To Enhance the Performance of Solar Still With Reflectors.

Khan¹,

Nawaz²

2017

IJAR

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Performance analysis of solar stills based on various factors affecting the productivity—A review

Cited by 236 publications

References 51 publications

Steam generation under one sun enabled by a floating structure with thermal concentration

Steam generation under one sun enabled by a floating structure with thermal concentration

Today's and Future Challenges in Applications of Renewable Energy Technologies for Desalination

To Enhance the Performance of Solar Still With Reflectors.

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