//Chapter-11, Example 11.8, Page 492 //============================================================================= clc clear //INPUT DATA h=2.8;//Height of the plate in m T=54;//Temperature of the plate in degree C Tsat=100;//Saturation temperature of water in degree C Tf=(Tsat+T)/2;//Film temperature in degree C p1=937.7;//Density of liquid in kg/m^3 u=(365*10^-6);//Dynamic viscosity in N.s/m^2 hfg=2257;//Enthalpy in kJ/kg pv=0.596;//Density of vapour in kg/m^3 k1=0.668;//Thermal conductivity in W/m.K //CALCULATIONS Re=(0.00296*((p1*9.81*(p1-pv)*k1^3*(Tsat-T)^3*h^3)/(u^5*(hfg*1000)^3))^(5/9));//Reynolds number hL=(0.0077*((9.81*p1*(p1-pv)*k1^3)/u^2)^(1/3)*Re^0.4);//Heat transfer coefficient in W/m^2.K Q=(hL*h*(Tsat-T))/1000;//Heat transfer rate per unit width in kW/m //OUTPUT mprintf('Heat transfer rate per unit width is %3.2f kW/m',Q) //=================================END OF PROGRAM==============================