Solar Air Heater Essay
A LITERATURE SURVEY ON THERMODYNAMIC ANALYSIS OF A FLAT-PLATE SOLAR AIR HEATER HAVING DIFFERENT OBSTACLES ON ABSORBER PLATES NALINI DASARI1, Dr. K. SRIDHAR2 1Research Scholar, Kakatiya University, Warangal, Telangana State, India, dnalini.dasari@gmail.com 2Professor of Mechanical Engineering Dept. & Dean, Student Affairs, Kakatiya Institute of Technology & Science (KITS), Warangal, Telangana State, Warangal, India, kandurisridhar@rediffmail.com. ABSTRACT In this paper a literature review on flat-plate solar air heater having different obstacles on absorber plates has been highlighted. The thermodynamic analysis for SAHs with different obstacles and comparisons which was done among them by different researchers is reviewed in this paper. Further, the energy analysis and exergy analysis of SAHs have been discussed too. Keywords:- Solar Air Heater …show more content…
Annually, the solar energy obtained by earth is 15000 as much as the power industry of the whole world can produce. It means that only a tiny part of solar energy is used for the sake of mankind (Aboltinset al., 2009) solar air heaters (SAHs) are kinds of heat exchangers. Solar air heater is the special type of heat exchanging equipment used to convert the solar thermal energy useful heat for the purpose of agricultural food processing, space heating, ventilation and desalination [1]. The harnessing of solar energy by solar air heaters depends on the conversion efficiency of solar intensity into useful heat output by the absorber plates. The major negative aspect of a solar air heater is its poor heat transfer coefficient between the absorber plate and the moving air, which results in poor energy conversion efficiency. However, the heat transfer coefficients between the absorber plate and the moving air can be improved by heat storage materials [2], by packed bed absorber plates [3], by creating
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