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A review of icing prevention in photovoltaic devices by surface engineering

Fillion, R.M.; Riahi, A.R.; Edrisy, A. - In: Renewable and Sustainable Energy Reviews 32 (2014) C, pp. 797-809

the efficiency or even stop the production of energy. A superhydrophobic coating has been proposed as a functional coating … for use in solar cell and outdoor applications. A review of the literature has revealed that a superhydrophobic coating … of a superhydrophobic coating can prevent and reduce the accretion of ice, while subsequently the ice resistant …

Persistent link: https://www.econbiz.de/10010753403

Effect of roughness geometries on heat transfer enhancement in solar thermal systems – A review

Gawande, Vipin B.; Dhoble, A.S.; Zodpe, D.B. - In: Renewable and Sustainable Energy Reviews 32 (2014) C, pp. 347-378

The performance characteristics of a solar heater and heat exchangers can be effectively improved by using artificial roughness in different forms, shapes and sizes. Artificial roughness is provided in the form of different geometries such as ribs, dimple shape roughness, wire mesh, baffles,...

Persistent link: https://www.econbiz.de/10010753395

Energetic and exergetic aspects of solar air heating (solar collector) systems

Oztop, Hakan F.; Bayrak, Fatih; Hepbasli, Arif - In: Renewable and Sustainable Energy Reviews 21 (2013) C, pp. 59-83

Solar air heating (solar collector) is a renewable heating technology and provides heat using solar energy. With fuel costs and other factors, solar air heaters (SAHs) are getting more attention. The energetic and exergetic performance of SAHs is influenced by a number of factors. The present...

Persistent link: https://www.econbiz.de/10010636358

Artificially roughened solar air heater: Experimental investigations

Singh Yadav, Anil; Kumar Thapak, Manish - In: Renewable and Sustainable Energy Reviews 36 (2014) C, pp. 370-411

Solar air heater is the cheapest and extensively used solar energy collection device for drying of agricultural products, space heating, seasoning of timber and curing of industrial products. The use of an artificial roughness on a surface is an effective technique to enhance the rate of heat...

Persistent link: https://www.econbiz.de/10010785156

Review on solar air heating system with and without thermal energy storage system

Tyagi, V.V.; Panwar, N.L.; Rahim, N.A.; Kothari, Richa - In: Renewable and Sustainable Energy Reviews 16 (2012) 4, pp. 2289-2303

In order to produce process heat for drying of agricultural, textile, marine products, heating of buildings and re-generating dehumidify agent, solar energy is one of the promising heat sources for meeting energy demand without putting adverse impact of environment. Hence it plays a key role for...

Persistent link: https://www.econbiz.de/10010573508

Exergy evaluation of packed bed solar air heater

Lalji, Mukesh Kumar; Sarviya, R.M.; Bhagoria, J.L. - In: Renewable and Sustainable Energy Reviews 16 (2012) 8, pp. 6262-6267

In view of above present investigation is planned with the following.

Persistent link: https://www.econbiz.de/10010580710

Heat transfer and fluid flow analysis of solar air heater: A review of CFD approach

Yadav, Anil Singh; Bhagoria, J.L. - In: Renewable and Sustainable Energy Reviews 23 (2013) C, pp. 60-79

The objective of this article is to present a detailed review of the literature that deals with the application of CFD in the design of solar air heater. Solar air heater is one of the basic equipment through which solar energy is converted into thermal energy. CFD is a simulation tool which...

Persistent link: https://www.econbiz.de/10011049194

Heat and flow characteristics of air heater ducts provided with turbulators—A review

Alam, Tabish; Saini, R.P.; Saini, J.S. - In: Renewable and Sustainable Energy Reviews 31 (2014) C, pp. 289-304

The use of turbulators in different forms of ribs, baffles, delta winglets, obstacles, vortex generator, rings and perforated blocks/baffles is an effective way to improve the performance of heat exchangers and solar air heaters. Investigators studied the effect of these turbulators for heat...

Persistent link: https://www.econbiz.de/10011049411

Thermo-hydraulic performance analysis of solar air heaters having artificial roughness–A review

Sharma, Sanjay K.; Kalamkar, Vilas R. - In: Renewable and Sustainable Energy Reviews 41 (2015) C, pp. 413-435

Enhancement of heat transfer in the solar air heater ducts can be achieved by several means like using baffles, fins, ribs and groves. Until now, various attempts have been made to investigate the effects of these geometries on the enhancement of the heat transfer rate; however it is achieved at...

Persistent link: https://www.econbiz.de/10011077280

Heat transfer mechanism and energy efficiency of artificially roughened solar air heaters—A review

Patil, Anil Kumar - In: Renewable and Sustainable Energy Reviews 42 (2015) C, pp. 681-689

Roughness applied on a broad wall of a solar air heater significantly enhances the heat transfer to the flowing fluid with the moderate rise in fluid friction. It is imperative to select the roughness pattern and its geometrical parameters, which are responsible for the change in fluid flow...

Persistent link: https://www.econbiz.de/10011117079