Rod Load Calculator

Formula

To calculate the Compression Rod Load (\(CRL\)):

\[ CRL = B^2 \cdot P2 - (B^2 - R^2) \cdot P1 \]

Where:

\(CRL\) is the Compression Rod Load (lbf)
\(B\) is the Bore Size (in)
\(P2\) is the Discharge Pressure (psi)
\(P1\) is the Suction Pressure (psi)
\(R\) is the Rod Length (in)

What is a Rod Load?

A rod load is defined as the total force acting on the piston rod of a reciprocating compressor. It is an important parameter for assessing the mechanical stress and performance of the compressor.

Example Calculation

Let's assume the following values:

Bore Size (\(B\)) = 4 in
Discharge Pressure (\(P2\)) = 150 psi
Suction Pressure (\(P1\)) = 50 psi
Rod Length (\(R\)) = 2 in

Using the formula:

\[ CRL = 4^2 \cdot 150 - (4^2 - 2^2) \cdot 50 = 2400 - 600 = 1800 \text{ lbf} \]

The Compression Rod Load is 1800 lbf.