Paper Details

Solar energy is an abandoned energy source which are alternate in comparison of other resources. One of thesimplest and most direct applications of this energy is the conversion of solar radiation into heat. The flat-plate collectoris commonly used which having high heat loss result in low convective heat transfer. Also it can be used in water heatingsystems serious corrosion problem arrived. The solar air heater is newly developed air tight circular collector whoseabso rbe r is usually made of a metal tube o f high thermal conductivity, such as copper or aluminum. Its surface is coatedwith dull black painted over the entire outer surfaces to maximi ze radiant energy absorption while minimizing radiantenergy emission. Qa i s the amount of solar radiation received by the circular collector. As the collector absorbs heatene rgy ,e ffec t in its temperature rising , comparison with than that of the surrounding and heat is lost in to theatmosphere by convection and re radiation, this heat loss rate can be presented by Ql.The overall heat loss coefficient is akey factor for the performance of air tight circular solar collector. The overall heat loss coefficient of airtight circularcollector is increase with increasing in absorber temperature, which wills effects on efficiency of airtight circular solarcollector.

Anil Motiram Patel, Mandar Mukundrav Sumant, Dr. V Siva Reddy, “Effect of overall Heat loss coefficient on performance of Circular Solar collector for close water open air (CWOA) humidification dehumidification process”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 4, pp. 272-281, April 2015.