Depends if the resistance to flow is upstream or downstream of the atmospheric pressure refill - or what fraction is upstream versus downstream.TSN79 said:Consider a closed system (central heating). Before the pump is started the static pressure is 2.0 bars. Say the system head loss is 0.6 bars. When the pump starts, will the suction side pressure and the discharge pressure each read half the total head loss (1.7 and 2.3 bars)? Or will the head loss be split unequally for some reason?
Suction side pump pressure refers to the pressure at the inlet of the pump, where the fluid enters. Discharge side pump pressure is the pressure at the outlet of the pump, where the fluid exits. The difference between these two pressures is known as the pump head, which is the amount of energy the pump imparts to the fluid.
Suction side pump pressure is usually measured using a pressure gauge attached to the inlet of the pump. This gauge measures the pressure in pounds per square inch (psi) or bar.
Suction side pump pressure can be affected by a variety of factors, including the speed of the pump, the viscosity of the fluid being pumped, the elevation difference between the fluid source and the pump, and the condition of the pump and its components.
Suction side pump pressure is an important factor in determining the efficiency and flow rate of the pump. If the suction side pressure is too low, it can cause cavitation, which can damage the pump and decrease its performance. On the other hand, if the suction side pressure is too high, it can put excessive strain on the pump and also decrease its efficiency.
Yes, suction side pump pressure can be controlled by adjusting the speed of the pump, using a pressure regulator or control valve, or by changing the fluid source or elevation. It is important to monitor and control suction side pump pressure to ensure the proper functioning and longevity of the pump.