 Calculations

# Steam Pipe Calculation

The pressure loss in the steam pipes is calculated. It is necessary to add the local loss of parts in the elbow, tee.

 Fill in the form below. Unit System : SI Imperial Fluid : Saturated Vapor Superheated Steam Pipe Type: : Steel DIN 2448 SCH 40 Pipe SCH 80 Pipe Inlet Pressure : bar G mbar G Pa G kPa G kg/cm² Abs. bar Abs mbar Abs Pa Abs kPa Abs Nominal Diameter : 15 - 1/2" 20 - 3/4" 25 - 1" 32 - 1 1/4" 40 - 1 1/2" 50 - 2" 65 - 2 1/2" 80 - 3" 100 - 4" 125 - 5" 150 - 6" 200 - 8" 250 - 10" 300 - 12" 350 - 14" 400 - 16" 450 - 18" 500 - 20" Flow : kg/h kg/s Length : m Not : As the inlet pressure value to calculate, Abs. when units are selected, absolute pressure value, when units such as bar G, mbar G are selected, the upper pressure, that is, the value indicated by the manometer, must be entered. The formula used is the Colebrook–White equation for turbulent flow (Re>4000). (Formül \ref{eu_Colebrook}) \begin{equation}\label{eu_Colebrook} \frac{1}{\sqrt{f }}=-2\log \left ( \frac{2.51}{Re\sqrt{f}}+\frac{\varepsilon /D}{3.71} \right ) \end{equation} From the Darcy-Weisbach equation, the friction loss along the pipe is found. $$\small{\Delta P=f\displaystyle\frac{L}{D}\displaystyle\frac{\rho v^{2}}{2} }$$ Pa'dır. Here, $$\small f$$ dimensionless friction coefficient, $$\small D$$ inner diameter in meters, $$\small Re$$ dimensionless reynolt number, $$\small\varepsilon$$ roughness in meters, $$\small L$$ is pipe length, $$v$$ is velocity in m/s, $$\rho$$ is specific mass in kg/m3. Literature : Thermophysical Properties of Fluid Systems, https://webbook.nist.gov/chemistry/fluid/ (19/03/2022)
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