# Why Heat Exchangers are preferred to work in Constant Pressure Process than Constant Volume Process?

Why Heat Exchangers are preferred to work in Constant Pressure Process than Constant Volume Process?

Mostly, all problems are solved in Constant Pressure Process

I'm assuming that you want to know why we use the heat capacity at constant pressure, $c_p$, instead of at constant volume, $c_v$, in analyzing heat exchangers.