1Hitesh N Panchal, 2Dr. Manish Doshi, 3Anup Patel, 4 Keyursinh Thakor
1Assistant Professor, Mechanical Engineering Department, L C Institute of Technology, Mehsana Gujarat, India Email: Engineerhitesh2000@gmail.com
2. Member of Institution of Engineer (MIE)
3. Assistant Professor, L C Institute of Technology, Mehsana 4. Assistant Professor, L C Institute of Technology, Mehsana
Solar still is very important device to convert the available brackish water into drinkable water. Here work is carried out to know the effect of coupling an Evacuated Heat Pipe Collector on the solar still. Other different parameters like Water depth, Sun direction and solar radiation to enhance the productivity. It has found that coupling an Evacuated Heat pipe collector with a solar still has increased the productivity by 32%. Also it has found that the productivity is reduced while using higher water depth and solar insolation is directly proportional to the Productivity. .
Keywords: Pyranometer, Thermocouples, Evacuated Heat Pipe Collector
O.O. Badran  performed experiment on single slope solar still using different operational parameters like basin water depth, glass cover thickness, insulating materials and proved that, productivity of distilled output is increased upto 51% when combined enhancers such as asphalt basin liner and sprinkler have been applied on single slope solar still.Kalidasa Murugavel et.al. gave brief report on solar desalination regarding with various methods of improving the productivity. They suggested that different materials are used in basin solar still to improve the heat capacity, radiation absorption capacity and condensation rate. Kalidasa Murugavel at.al  used different wick materials like light cotton cloth, light jute cloth, sponge sheet of 2 mm thickness and different porous materials like washed natural rocks of different average sizes. He proved that wick materials could improve the distilled ouput. M.E. El-Swifty and M.Z. Metias, said some sun rays are received by the back plate and side plates of the basin, hence this effect reduces the amount of radiation available to the basin for heating. So they used reflecting mirrors. After, Imad Al-Hayek and O O Badran proved that single slope solar still with reflecting mirror increase the distilled output 20% more than double slope solar still. H.A. Tahaineh and O.O. Badran  used solar collector coupled with solar still and investigated that the productivity. They took different parameters like water depth, direction of solar still, solar radiation to enhance the solar still productivity. They found that coupling of flat plate collector with solar still can increase the productivity upto 20%.Hazim Mohammed Qibdawey.et.al  has presented paper entitled “solar thermal desalination technologies”. He has shown the direct and indirect desalination technologies of solar still like vapour compression, multistage flash evaporation, membrane distillation etc. They said Evacuated glass tube collector is more useful compared with flat plate collector. They also suggested that, coupling a CPC can increase the temperature more than Evacuated glass tube collector and Flat Plate collector.Rajesh Tripathi.et.al as found the distribution of solar radiation using concept of solar fraction inside the single slope solar still by using Auto Cad 2006 for given azimuth angle and latitude angle. From numerical computations, climate conditions of New Delhi have been carried out.M Bouker.et.al  has done performance of simple solar still compared with coupled one. He tasted for all day productivity under clear sky conditions with different depth levels of brackish water for winter and summer period from Jan to March. 2000. He found that productivity in summer period varied from 4.01 to 4.34 L/m2/Day...