International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 2033 SOLAR WATER HEATER THROUGH ALUMINIUM FOIL - A REVIEW P.Balamurugan1, S.P.Premkumaran 2 , S.Raj Kumar 3 , R. Rajapandian 4 1,2,3,4 Department of Mechanical Engineering Sri Ramakrishna Engineering College, Coimbatore, Tamilnadu, India ------------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - Solar energy is one of the freely available clean forms of renewable energy. Many technologies have been developed in India for extracting energy from available renewable energies, but the maximum extraction of thermal energy from solar energy is the most challenging process. This paper covers the performance and efficiency of solar parabolic trough collector. It also states the pertinent applications of solar energy such as water heating system, heat transfer fluid, heat transfer model, desalination, industrial heating purposes and power plants. Also recent developments on heat transfer enhancement methods for CSP technology with PTC system were highlighted. Moreover the rupture of glass covers was frequently observed during application, methods of thermal deformation restrain for tube receivers were reviewed as well. Finally, the possible further developments of CSP plants with PTC system were outlined. 1. INTRODUCTION In modern world utilize the energies are renewable and non renewable energy. Many countries started running behind renewable energy of various applications like, desalination, air-conditioning, refrigeration. The energy are used in small scale industry ,large scale industries and electric power generation. Maximum energy trapped from various renewable energy sources of the efficient technique are to be used to gain more amount of energy. Now days most of countries uses solar energy, because it is the most abundant source from sun to earth receives high amount of sunlight radiation .The amount of photons in sun light converted into some of solar energy the countries like, Morocco, Mexico, India and Egypt the energy used to develop energy. The energy used to heating applications like solar water heater, solar cooker, thermal power generations, the lighting house and industrial applications. The developing country concentrate the high level solar power for electricity[1]. Fig – 1.1 Types of Energy The renewable energy like solar, tidal, wind, geo thermal can be used maximum to generate power and heating application. The electricity generation of tamilnadu consist a four way of power plant i.e thermal , nuclear, hydro, solar . the national energy laboratory survey give an power generation in tamilnadu. Thermal power plant generate 10411 MW power by using goal as a source of electricity. It is the major amount power generation in tamilnadu solar energy produce the 7946 MW amount power . it’s the second largest power generation in tamilnadu, the main source is sunlight .The sunlight radiation started from morning 7.30 am to evening 5.00 pm the peak time period is 11.00 am to 3.00 pm have more amount if energy from sun .hydro power plant produce 2182 MW of power .finally nuclear power plant provide 524 MW of power .The solar collector absorb the heat from source of sun light and the heat transferred into working fluid.. The fluid consist water.[1] Oil, air and some organic fluid . The solar collector directly utilized the thermal energy from sun. The thermal energy converted into heat energy it can be transformed into the working fluid. The types of solar collector namely, Flat-plate collector, flat plate collector with reflectors, Parabolic Trough Collector (PTC), Compound parabolic collector and Fresnel lens concentrating collector. Most of the Flat plate collector used to generate hot water the temperature is (120-140)°C. The flat plate collector have spherical silicon cells it increase the efficiency [2]. In Parabolic Trough Collector absorb the energy from sun by using collector it have silicon mirror. The maximum temperature up to