SINETZ is a program for steady state calculation of flow distribution, pressure drop and heat loss in branched and intermeshed piping networks for compressible and incompressible media. Integrated planning systems with specialized components have a central meaning in the project planning. Such a „specialist" is SINETZ, the program for the calculation of pressure drop and heat loss in branched and intermeshed piping networks with circular, rectangular as well as any cross sections, defined by the hydraulic diameter.

The tasks of SINETZ are:

• Dimensioning of cross sections and insulation in the project period.
• Dimensioning of pumps.
• Verification of dimensions for network expansions.
• Usability analysis of existing piping networks.
• Simulation of different operation states or abnormal occurrences in intermeshed piping networks.

SINETZ solves the tasks by calculation of pressure and temperature loss in branched and intermeshed piping networks with circular, rectangular as well as any cross sections, defined by the hydraulic diameter. SINETZ calculates direction of flow, rate of flow and temperature loss for individual pipe sections, as well as the temperature and pressure of individual nodes, and the resulting flow distribution for an intermeshed system of any complexity. Calculations for compressible and incompressible media are both possible. The calculation is carried out for a given system assuming a steady state flow. Arbitrary intermeshed networks are solvable. Calculation is possible for open as well as for closed systems.