IRR measures the rate needed to break even on an investment. Calculate IRR by setting NPV to zero and solving for the discount rate. Use Excel's IRR function by inputting initial cost and cash inflow.

Replacing worn-out couplings with the incorrect size can cause unintended consequences. Flow velocity is an important consideration when replacing a larger hydraulic hose inside diameter with a ...

A method has been developed that allows direct, accurate calculation of recovery efficiency for Claus sulfur-recovery units (SRU). The calculation combines feed-gas data and tail-gas composition to ...