... Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems 378 Wetzel, M. ( 199 8) Experimental investigation of a single ... Sunden, B. ( 199 3) Numerical and experimental analysis of laminar fluid flow and forced convection heat transfer in a grooved duct, Int. J. Heat and Mass Transfer, Vol. 36, No. 6, 16 09- 1617 Ghaddar, ... for activation, 9 – nitrogen bubbling, 10 – preheater. Fig. 4. Scheme of the experimental rig. Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems 382...