Fibre-reinforced plastic (FRP) flat plate collector (FPC) with single cover can be used for augmenting evaporation of water in tannery effluent. In this paper, experimental studies on FRP - FPC is presented. The performance is compared with the theoretically simulated performance. The evaporation rate increases, with increase in insolation and wind speed and decrease in relative humidity, concentration and mass flow rate. © 2003 Elsevier Ltd. All rights reserved.