Calculation for the Output of Solar Still of an Individual Hour

A study has been done over the 9-h cycle for the solar still and calculates their output for an individual hour. The values of solar intensity, coefficient of heat transfer, ambient temperature, depth of water, and the coefficient of heat transfer through the walls of base and sides of the water basin are measured from the approximate method for each hour and later check their performance. In the previous methods, we required the graphical constructions and also constant coefficients of heat transfer assume but this thing is not required in this proposed method and observed the coefficients of heat transfer value for all the earlier time interval in the equations of heat balance is must. Actually, observed the two alternatives method of calculation is obtained evaporation rate for each an hour. From the energy balance equations, we compared the results from one which is found by mathematical solution. By using the energy balance equations, results which are calculated are different from the results obtained from the 9-h cycle of the approximate method and having the ±1.5% error. Water depth is 5–15 cms, coefficient of heat transfer in wind is 5–40 W/m2 K and the coefficient of heat transfer through side and base walls is 0–3 W/m2 K; these are variable ranges which taken for the analysis.