FK 40 - Tri-Canada

Pump technology
terms
Flow rat e [m≈/h]
Total head [m]
Power consumption
For better understanding of the following chapters, we firstly will define and explain the
technical terms relating to pump technology used in this brochure. The reader will find
these terms in alphabetical order in the index. Measures and conversion formulae are
summarised in a t able.
The flow rate is the effective volume flowing per unit of time through the discharge
connection of a pump.
In order to optimize the pump design, the flow rate must be accurately determined.
The total head is the effective mechanical energy transferred by a pump to the fluid as a
function of the weight force of the fluid.
The total head results as follows:
H = H geo + H V + p
It consists of:
• the difference in height to overcome
bet ween t he suct ion side and
the discharge side of an installation.
H = H ± H geo dgeo sgeo
• the friction loss resulting from pipe
walls, fittings and valves within the
plant.
H = H +H V VS Vd
• the pressure difference
p = p ± p A E
The power consumpt ion is t he t ot al energy t ransf erred by t he pump t o t he discharge f low.