Thermal efficiency of double slope FRP solar distiller: an analytical and experimental studies.

Abstract An analytical expression for thermal efficiency of Double Slope Fiber Re-enforced Plastic (FRP)solar still has been derived by incorporating the uniform water flow in both slopes due to capillary action as well as water pressure in a pipe provided above the reservoir. In order to validate the theoretical results obtained by present model have been compared with the experimental results of Tiwari and Salim[2] it was observed that due to proposed modification in solar distiller for continuous water flow, the thermal efficiency is significantly increased for least water flow velocity and is in accordance with the results of Tiwari and Salim [2]