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the HGL maintained by the FGN. If there are pressure regulating valves or pressure sustaining valves in the
system HGL representing the setting must be specified. The regulated pressure is incorporated into the
calculation of the HGL representing the valve setting (pressure head + elevation).
Normal Flow Directions - Flow directions for lines with pumps, check valves, and pressure regulating valves
must be specified in the data input and this is done by the order which the connecting nodes for the pipe
section are input. The normal flow direction is assumed to be from the first node input to the second node input.
If the calculated flow is in the opposite direction it will be tabulated with a negative sign.
PARAMETER CALCULATION
Overview
KYPIPE (versions 2 and 3) provides a fast and accurate calculation of a variety of design, operating
and calibration parameters for pipe distribution networks. Pipe system parameters are calculated to exactly
satisfy stated pressure requirements at designated locations in the piping system for a range of operating
conditions. This offers a basis for determining the "optimum" values for the various design, operating and
calibration parameters in the sense that the parameters are calculated to just meet the specified pressure
conditions. This will allow you to provide sound decision making and to conceive and evaluate efficient
and reliable alternatives or recommendations with reference to suggested or required system performance.
This manual contains examples and illustrations of various applications.
With the addition of this capability KYPIPE becomes a comprehensive distribution network analyzer. It
has widespread applications associated with the design, operation, and calibration of pipe distribution networks.
It allows a wide variety of pipe system parameters and any of their combinations to be determined while
meeting specified system performance criteria. These criteria represent specified pressure requirements at
designated junction nodes throughout the distribution network for specified operating conditions. The parameters
that can be considered may be divided into design, operating and calibration parameters, although there may be
some overlap in these designations. The parameters include:
1. Design parameters such as: pipe diameter, pump power, pump head, storage level, and valve
characteristics.
2. Operating parameters such as: pump speed, pressure regulating valve setting, control valve setting, and
flow or pressure specifications.
3. Calibration parameters such as: pipe roughness, node demands, and minor loss coefficients.
There are three ways in which system parameter values can be calculated using KYPIPE. For each
designated pressure condition, one of the following calculations can be made:
1. Calculation of a single value for a single designated parameter. For example, the calculation of
the diameter of a designated pipe needed to just meet a specified pressure condition.
2. Calculation of a single value for a multiple designated parameter. For example, the calculation
of a single value of HGL to be used as the setting for a number of pressure regulating valves
which will just meet a pressure specification in the regulated region.
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