Experimental investigation of forced convection heat transfer for turbulent air flow inside horizontal heated pipe

Abstract

Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.An experimental study presented in this paper about the forced convection in the ranges of turbulent flow. The experiments were made on dry air and moist air of different moisture content. Different turbulent air flow and heat flux considered and analyzed. The distribution of temperature and local Nusselt number along the heated copper pipe, the average Reynolds number is 7.4*104 – 9.1*104 against average Nusselt number, in addition to the velocity and temperature distribution across a horizontal pipe were presented in the results and discussed. Finally, it can be concluded that the effect of moisture content in the air on Nusselt number was little.