Hi everyone,
I am going to control the temperature of a highly exothermic reaction via cooling water. The cooling water passes through the tubes located inside the reactor vessel to keep the temperature constant when the reaction is carried out.
I am not sure in such case if it is suitable to control the temperature by a control valve at the upstream of cooling coil or a variable speed pump will be more reliable to control the temperature of the process gas.
Although energy consumption is important, the system is pilot and we are not concerned about the cost of energy and most issue is having the best control on the process temperature.
Following the controlability, the initial cost might be also an important point to compare the VSD pump and control valve.
The cooling pipe size is 1" or 1 1/2" and the flow and head of the cooling pump can be considered around 5 m3/h and 10 mW respectively.
I appreciate your idea if you have some similar experiences.
Mahdi