How to Calculate Irreversibility?
Irreversibility calculator uses Irreversibility = (Temperature*(Entropy at point 2-Entropy at point 1)-Heat input/Input Temperature+Heat output/Output Temperature) to calculate the Irreversibility, Irreversibility of a process can also be construed as the amount of work to be done to restore the system to the original state. Irreversibility is denoted by I_{12} symbol.
How to calculate Irreversibility using this online calculator? To use this online calculator for Irreversibility, enter Temperature (T), Entropy at point 2 (S_{2}), Entropy at point 1 (S_{1}), Heat input (Q_{in}), Input Temperature (T_{in}), Heat output (Q_{out}) & Output Temperature (T_{out}) and hit the calculate button. Here is how the Irreversibility calculation can be explained with given input values -> 8171.548 = (86*(145-50)-200/210+300/120).