Research Journal of Physics1819-3463xxxx-xxxxScience International10.3923/rjp.2007.35.41AgboS.N. OkoroigweE.C. 1200711The performance of any solar water heater is largely affected by the losses experienced within the system. This research reports the effect of wind speed, number of glazing cover, ambient temperature, gap spacing between absorber plate and the glazing cover, tilt angle and the emissivity of the absorber plate on the overall heat-loss coefficient of a flat-plate collector. The results reflect the contribution and significance of each of these parameters to the collector overall heat-loss coefficient.]]>Duffie, J.A. and W.A. Beckman,1974Eisenmann, W., K. Vajen and H. Ackermann,200476381387Garg, H.P.,1987Hunt, V.D.,1982.Iqbal, M.,1983Pages: 223Pages: 223Malhotra, A., H.P. Garg and A. Palit,198125962Mumah, S.N.,1995136775Morrison, G.L. and D.B. Ranatunga,1980245561Pillar, P.K. and R.C. Agarwal,19818205213Yeh, H.M., C.D. Ho and C.W. Yeh,20032815751586Agbo, S.N. and G.O. Unachukwu,20062006