# Gauge Height Total

Gauge Height Total is the energy per unit weight of the system calls for transporting the fluid suction reservoir to the outlet reservoir with a certain flow. This power is supplied by a pump, which will be the key to the selecionamento mesma.É important to note that in a pumping system, the required condition is the flow parameter, whereas the total head is a consequence of the installation. The total head of the system (H) can be calculated by: Where:

• Pd [kgf/cm²] – Reservoir pressure discharge
• Ps [kgf/cm²] – Pressure in the suction tank
• g [kgf/dm³] – Specific weight of the fluid
• Vd [m/s] – Velocity at outlet reservoir
• Vs [m/s] – Speed ​​in the suction tank
• g [m/s²] – Acceleration of gravity
• Hgeo [m] – Geometric height
• Hp [m] – Load losses
• The constant 10 is to adjust the system of units used.

The above formula is used to determine the total head of the system in terms of design, ie, used for determining the loss of load, etc.

For a system already in operation, some of the quantities can be obtained directly from measurements made ​​at the facility. In this case, the total head height can be obtained as follows: Where:

• Pd [kgf/cm²] – Reservoir pressure discharge
• Ps [kgf/cm²] – Pressure in the suction tank
• g [kgf/dm³] – Specific weight of the fluid
• Vd [m/s] – Velocity at outlet reservoir
• Vs [m/s] – Speed ​​in the suction tank
• g [m/s²] – Acceleration of gravity
• Z [m] – Diferença de cota entre as linhas de centro dos rotores e dos manômetros (sucção e descarga)
• The constant 10 is to adjust the system of units used.