The Dittus-Boelter equation is used to determine the convective heat transfer coefficient in circular tubes and is given by: Nu = 0.026 Re0.8 Pr0.33 where Nu (the Nusselt number which is the ratio of the convective to the conductive heat transfer), Pr (the Prandtl number which is the ratio of momentum diffusivity to thermal diffusivity) and Re (the Reynolds number which is the ratio of the inertial forces to the viscous forces) are all dimensionless. The Reynolds and Prandtl numbers are given by: pud Re = Pr k where u = velocity in ms, p = density in kgm, = viscosity in Nsm?, d = pipe diameter in m, Cp= specific heat capacity in Jkg*K and k = thermal conductivity in Wm'K'. Calculate the Reynolds, Prandtl and Nusselt numbers for water flowing at a rate of 13,200 lbm/hr through a circular pipe with a 25mm diameter. The following physical property data is given: p = 62.4 lbmft, = 0.001002 Pa.s, Cp= 4.18 kJ/(kg C), and k = 0.596 J/(s.m.K) %3D