Hi,
In a HVAC system, we have a closed circuit loop supplying the cooling medium to different users. As per a colleague, we shouldn't account for the pressure drop due to difference in head since it's a closed circuit.
My question is how would that be possible and we have 20-25 meters of difference in level to reach the users from where the supply pumps are? I do understand that as soon as the fluid reaches the top, it will gain back the head loss, but this means the pump suction pressure will change.
Correct me if I am wrong here, I am really confused.
Regards,
Sherif