Pressure temperature variation

Dev

Dear experts,

I am trying to simulate pressure changes as the the temperature increases with time but I am unable to do that. What I simulated was a tube and shell arrangement. Hot fluid passes through the tube side and heats up the cold fluid in the shell side. I want to study the change in pressure as the temperature increases with time. I know the inlet temperature and pressure and also the flow rate for the outlet (these are for the tube as well as the shell side). The solution shows an increase in temperature at the shell side (cold side) but no increase in pressure. Am i doing something wrong here? Please advice.

Thanks in advance.

Dev...