Abstract
The loss coefficients and the power-loss coefficients for sharp-edged combining tees with the area ratios of 11. 44 and 17. 72 are determined experimentally. Based on the least squares analyses of the experimental results of both the present authors and previous investigators, empirical equations of loss coefficients for combining tees are proposed. The effects of both the area ratio and the radius of curvature of the wall at the joining edge on loss coefficients are taken into account in deriving the equations. The comparison of the proposed equations with the experimental results shows that the proposed equations can be used to reliably estimate the energy losses at combining tees.
