蒸汽压降计算表

蒸汽压降计算

Vs ：Flow velocity (m/s)流速23.22785 Fs ：Steam flow rate (kg/s)蒸汽流量0.127778 v" ：Specific volume (m3/kg)比容0.24 d ：Inner diameter of pipe (m)管内径0.041 dP ：pressure loss (MPa)压强损失0.04513

f ：Coefficient of friction摩擦系数0.016461

Lp ：pipe length (m)长度100 RN ：Reynolds number雷诺数269938.1 Vis：Steam viscosity (m2/s)运动粘度 3.53E-06 e:（m）绝对粗糙度0.000016 Ves： (Pa.s)动力粘度 1.47E-05

Vs=Fs*v"/((d/2)^2*pi)

dP=f*Lp*Vs^2/(2*d*v")

f=0.0055+0.15*(e/d)^(1/3) RN>1X10^6 f=0.0055(1+(20xe/d+1x10^6/RN)^(1/3)) 3x10^31X10^6 RN=Vs*d/Vis

Vis=Ves*V"