You administer the definitions of zones using the dialog zone. You can enter new zones, modify and delete zones.

Zone – Register the name of the zone here. The name may be up to 40 characters long.

Corrections Tab

Length correction factor – With the length correction factor the dynamic pressure losses of all pipes will be corrected.

✍ The default value of 1.0 means that no corrections are made. In order to make a global addition of 30%, for example, on all dynamic pressure losses, you enter the factor 1.3, corresponding to 130% (see illustration).

Diameter-dependent length correction – The parameter allows a diameter-dependent adjustment of the dynamic pressure loss as summand to the length correction factor. The pipe length in pressure loss calculation with length correction parameters results as:

Wall roughness correction – Additive correction for the wall roughness of the pipes.

✍ The default value is 0 and effects no additional increase of the wall roughness which enters the pressure loss calculation.

Wall roughness factor – Correction factor for the wall roughness of the pipes for the adjustment of the calculated pressure losses to reality.

✍ The default value is to 1.0 and leads to no correction of the wall roughness. The actual wall roughness of a pipe is calculated as

Heat transfer correction – Additive correction for the heat transition coefficients.

✍ The default value is 0 and leads to no correction of heat loss calculation.

Heat transfer factor – Correction factor for the heat transfer coefficients by adjustment of the calculated heat losses to reality.

✍ The default value is 1.0 and leads to no correction of the heat transition coefficient.

The actual heat transition coefficient of a pipe is calculated as

⚠ Note the physical unit here. The correction refers to the actual heat

transition coefficient – not the heat coefficient from the pipe class. See also Piping.