Challenges and opportunities for Solar Tower technology in India

Gopalakrishnan, S.; Venkatesh, V.; Thirumalai, N.C.; Suresh, Nalina

doi:10.1016/j.rser.2015.02.016

Cited by 25 publications

(10 citation statements)

References 11 publications

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“…The variation in receiver design can be mentioned as full cavity type to fully external type, which the latter utilizes tubes for absorbing the concentrated solar energy. Afterwards, the heat is transferred to the heat transfer fluid which exists in the tubes . The installed capacity of Spain (2300 MW) leads to be the world head in the CSP technology utilizing solar tower system …”

Section: Solar Thermal Power Generation Systems With Various Solar Comentioning

confidence: 99%

“…Afterwards, the heat is transferred to the heat transfer fluid which exists in the tubes. 82 The installed capacity of Spain (2300 MW) leads to be the world head in the CSP technology utilizing solar tower system. 83 The ratio of the area of receiver to the total area of concentrating heliostats is equal to Concentration ratio (CR), as shown in Equation (14).…”

Section: Central Receiver Towermentioning

confidence: 99%

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Solar power technology for electricity generation: A critical review

Ahmadi

Ghazvini

Sadeghzadeh

et al. 2018

Energy Science & Engineering

279

103

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Negative environmental impact of fossil fuel consumption highlight the role of renewable energy sources and give them a unique opportunity to grow and improve. Among renewable energy sources solar energy attract more attention and many studies have focused on using solar energy for electricity generation. Here, in this study, solar energy technologies are reviewed to find out the best option for electricity generation. Using solar energy to generate electricity can be done either directly and indirectly. In the direct method, PV modules are utilized to convert solar irradiation into electricity. In the indirect method, thermal energy is harnessed employing concentrated solar power (CSP) plants such as Linear Fresnel collectors and parabolic trough collectors. In this paper, solar thermal technologies including soar trough collectors, linear Fresnel collectors, central tower systems, and solar parabolic dishes are comprehensively reviewed and barriers and opportunities are discussed. In addition, a comparison is made between solar thermal power plants and PV power generation plants. Based on published studies, PV‐based systems are more suitable for small‐scale power generation. They are also capable of generating more electricity in a specific area in comparison with CSP‐based systems. However, based on economic considerations, CSP plants are better in economic return.

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Section: Solar Thermal Power Generation Systems With Various Solar Comentioning

confidence: 99%

Section: Central Receiver Towermentioning

confidence: 99%

Solar power technology for electricity generation: A critical review

Ahmadi

Ghazvini

Sadeghzadeh

et al. 2018

Energy Science & Engineering

279

103

View full text Add to dashboard Cite

show abstract

“…Power cycle is generally based on Rankine cycle for thermal power plants, and in some cases the HTF itself could be used to as a working fluid. It can be different for the high capacity and storage based system [56].…”

Section: Central Receiver Towermentioning

confidence: 99%

Concentrated solar power technology in India: A review

Bijarniya

Sudhakar

Baredar

2016

Renewable and Sustainable Energy Reviews

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“…For example, at the Ivanpah solar tower facility in the Mojave Desert in California, 173 500 mirrors are used over an area of 1417 ha. [2] Depending on the nature, size, and density of coverage, dust accumulation can diminish transmittance and/or reflectance at a rate 7 % per month, with every percentage lost thorough scattering or absorption, thus reducing the efficiency of the plant. [3,4] The result is that these systems require almost constant cleaning in regions where water can be scarce and expensive.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Roughness Periodicity on the Hydrophobic Properties of Surfaces

Toster

Lewis

2015

Aust. J. Chem.

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Hydrophobic films were synthesized with a variety of silica particle sizes ranging from 58 to 1428 nm to investigate the effect of particle size on the contact and sliding angles. While the surface roughness created by varying the particle size did not appear to affect water contact angles, the sliding angles showed a significant monotonic decrease, reducing from 908 to 208. IntroductionSelf-cleaning surfaces have developed since the late 20th century and are comprised of two main types, superhydrophobic and superhydrophillic. A surface is generally considered superhydrophobic if it has a water contact angle (WCA) of greater than 1508 and a sliding angle of less than 108. Superhydrophillic surfaces, which attract water, have a WCA of less than 108, thereby resulting in the droplet spreading across the surface quite rapidly. In both cases, the water rolls or slides off the surface at low angle and high velocity, carrying with it dirt and other contaminants, which is the basis of the self-cleaning property. [1] Materials possessing these properties have significant potential from self-cleaning windows to applications on solar panels and the reflective mirrors used in concentrated thermal and photovoltaic (PV) solar plants, whereby vast arrays of mirrors are used. For example, at the Ivanpah solar tower facility in the Mojave Desert in California, 173 500 mirrors are used over an area of 1417 ha.[2] Depending on the nature, size, and density of coverage, dust accumulation can diminish transmittance and/or reflectance at a rate 7 % per month, with every percentage lost thorough scattering or absorption, thus reducing the efficiency of the plant. [3,4] The result is that these systems require almost constant cleaning in regions where water can be scarce and expensive. To be effective on mirrors, PVs, and windows, the superhydrophobic coatings must be transparent and have both thermal and mechanical durability. [5,6] Nature is the primary inspiration for this technology as researchers have investigated the ability of some plants to self-clean via their hydrophobic properties. [7,8] This is best presented by the lotus leaf, such that the self-cleaning phenomenon of superhydrophobicity is referred as the 'Lotus Effect'. [9] Hydrophobicity of a solid surface is a property of a material that is dependent on both the surface energy and surface roughness. [10][11][12] The surface energy is inherent to a material and is therefore difficult to adjust, whereas the surface roughness is much more variable. Recently, superhydrophobic materials have garnered interest not only due to their self-cleaning, but also their anti-fouling, stain-resistant, and ice-repellent properties. [13][14][15] Superhydrophobic materials are fabricated through various approaches such as chemical vapour deposition, templating, chemical etching, self-assembly, sol-gel, and electrospinning. [16][17][18][19][20][21][22] One particular method demonstrated by Tserepi et al. involved plasma treatment of polydimethylsiloxane (PDMS) in SF 6 gas to form superh...

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Challenges and opportunities for Solar Tower technology in India

Cited by 25 publications

References 11 publications

Solar power technology for electricity generation: A critical review

Solar power technology for electricity generation: A critical review

Concentrated solar power technology in India: A review

Investigation of Roughness Periodicity on the Hydrophobic Properties of Surfaces

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