Experimental Investigation of Double Sloped Solar Still Coupled with Flat Plate Solar Water Heater

Abstract

Since depletion of non-renewable sources of energy increase, renewable energy plays important role for human energy requirement. The effective utilization of solar energy is going to be the prime importance in future to replace the convectional source of energy.With the depletion of non-renewable sources of energy namely, fossil fuels, renewable sources of energy such as tidal, geothermal, solar, wind etc. are going to play a vital role for our energy requirement. The paper gives details of the utilization of solar energy for double sloped solar still coupled with flat plate solar water heater. It involves the construction, testing, and analysis of double sloped solar still coupled with plat plate solar water heater for small scale domestic purpose.The available report is reviewed the basic systems, different solar radiation measuring techniques and proposed system which can be done solar desalination in quite simple manner. Working of the system is as same as the rain following principle. During the experiment saline/brackish water is heated from solar radiation directly into the flat plate collector as well as in the solar still up to 500 to 700. Hot water from the collector can be store in storage tank while water in still is get evaporated due to solar radiation and then it will be condense. This condense water can be used as for the drinking purpose. Hot water store in the tank can be used for the various domestic purposes as well as it can be used in night for desalination. This system gives high thermal efficiency. It is not harmful for the environment but overall cost is quite high as compare to convectional solar still.