IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 03 Issue: 07 | JuL-2014, Available @ http://www.ijret.org 284 CONCRETE COMPOSITION ANALYSIS CAST AS A PLATE SOLAR RADIATION N.R. Ismail 1 , N. Fuhaid 2 1 Mechanical Engineering Departement.Engineering Faculty.Widyagama of University, Jl. Taman Borobudur indah no 3, Malang, East Java, Indonesia 2 Mechanical Engineering Departement.Engineering Faculty.Widyagama of University, Jl. Taman Borobudur indah no 3, Malang, East Java, Indonesia Abstract Various studies have been conducted relating to the material heat absorption and using. This study is a continuation of the research material concrete (cement, sand and stones cast) that produce; cement is kind of best cement Puger -Jember, finest sand is sand and stones cast iron is best cast stone(split). From these studies continued to receive concrete composition which can improve the performance of concrete as a heat absorber plate of solar radiation. In this study, using an experimental method to test the composition of concrete (cement, sand and stones cast) Testing is done by testing the compressive strength without and with heat treatment, the ability to absorb heat and heat dissipation, and test the ability to absorb and store the sun's heat radiation. Research produces the best concrete composition is the composition of the 2-2-3 concrete compressive strength in the review of the heat treatment, heat treatment and reduction in heat and heat of solar radiation absorption Keywords: composition of concrete, compressive strength, capable of heat absorber --------------------------------------------------------------------***------------------------------------------------------------------ 1. INTRODUCTION 1.1 Background Collector / absorber plate serves to absorb heat and is a very important component in the system heat absorption of solar radiation. Various studies conducted to improve the efficiency of absorption of heat collector is used to improve the efficiency of heat absorption in accordance with the application. According to Rahmat (2001), with a copper absorber plates are coated with matte black paint has a heat absorption coefficient of 0.82 and with the addition of gravel on top of it can improve the efficiency of solar distillation. Kris and San (2001), said that the thicker the absorber plate and the smaller the distance between the collector pipes, fin efficiency of the optimum collector. by Lempoy (2003), the addition of gravel on concrete absorber plate, resulting in productivity and efficiency of daily solar still is higher than without gravel. According Moninja (2004), collector type of concrete can increase the efficiency of solar collectors still higher than copper types. Ismail (2007), examined the absorber plate type concrete, aluminum, zinc and copper in the solar heater, produces the highest temperature absorber plate is a type of bronze, its steady heat absorption efficiency is a type of concrete. According to La Aba (2008), said the wave absorber plate and the thicker, more effective way to improve the performance of solar still. Ismail and Aditya (2010), a mixture of concrete type absorber plate with 2 parts cement composition, fine aggregate (sand) and 2 parts coarse aggregate (stone cast / coral) 3 parts produces the highest heat absorption efficiency compared to other compositions, and absorber plate with a thickness of 5 cm having the highest thermal efficiency of absorption compared with the thickness of 2.5 cm, 7.5 cm and 10 cm. Ismail and Fuhaid (2012), the best type of sand is a type of sand and stones cast iron is the best kind of cast stone split / celebrity, if in the review of the heavier kind, capable of heat treatment, and heat absorption of solar radiation and heat storage. The type or brand of cement is best-Jember Puger cement type, if in the review of the mortar compressive strength, capable of heat treatment, and heat absorption of solar radiation and heat storage. Based on the research that has been done on the basis of material / raw material, it is necessary to study the composition of concrete as a heat sink plate solar radiation. Plate absorber / collector serves to absorb solar radiation and heat is a very important component in solar distillation system and a solar water heater is simple. 1.2 Solar Collectors Based on the shape desired heat temperature heat collector can be broadly grouped into two parts: 1. Centering collector with a low concentration of between 80 o C to 150 o C. 2. Flat plate collectors for temperatures lower than 80 o C Collectors Flat Plate Collector Efficiency Value of heat absorption ( s ) on the absorber plate will maximize the efficiency of solar energy receiver. Absorption efficiency at each observation time interval (t) is defined as the ratio of the heat absorbed energy absorber plate (Q u ) to the amount of heat received by radiation (G t ) by the absorber plate surface (A c );