# How do you calculate pump TDH?

## How do you calculate pump TDH?

Total Dynamic Head (TDH) = (Static Water Depth + Drawdown + Additional Lift) + Frictional Losses in Pipe.

What is the unit of TDH?

TDH is also the work done by the pump per unit weight, per unit volume of fluid.

What is TDH ft water?

A waterfall four feet high requires the flow be delivered at 4 feet of “Vertical Head”, plus the extra work required to push that flow through the plumbing, the “Friction Head”. The total pressure required is the “Total Dynamic Head” (TDH) of your water feature.

### How do you calculate the TDH of a centrifugal pump?

How to Calculate TDH & NPSH

1. TOTAL DYNAMIC HEAD = (P2 – P1) x 2.31 Specific Gravity + Z2 + Hfs + Hfd.
2. BRAKE HORSEPOWER REQUIRED = (GPM x TDH x Specific Gravity) / (3960 x Pump Efficiency)
3. Net Positive Suction Head – Amount of energy in the liquid at the pump datum.
4. Required NPSH – A characteristic of the pump design.

How do you calculate TDH ESP?

ESP design – Step 4: Total Dynamic Head

1. TDH = HD + HF + HT.
2. The operating point of the pump is the intersection of pump characteristic curve and the curve of the lifting head required by the installation (Head = 5500 ft, Q = 900 bpd):
3. Effect of the fluid density:

What is total head on a pump?

The total head of the pump is the difference between the total discharge head (point 2) and the total suction head (point 1). The term “total” indicates that it includes the static pressure head (h), the velocity head (hv), and the elevation head (Z). The equation for total head (pump) can be expressed in Equation 2.

## What does total head mean in water pump?

Total head The combined height from the original liquid source up to the highest level to which the fluid can be pumped out of the point of discharge.

What is Max total head ft?

Max Head refers to a pump’s capability to push water upwards (also known as ‘vertical lift’). So for example, a pump which states ‘Max Head: 7m’ means the pump will be able to push water flow up to 7 metres high from the water surface.

How many psi is a foot of head?

The relationship between PSI and feet of head is that 2.31 feet of head = 1 PSI. Translated, that means that a column of water that’s 1-inch square and 2.31 feet tall will weigh 1 pound.

### What is total head in water pump?

What is the max head of a pump?

What is total head equal to?