This basic module enables the user to model, design and optimize his heating network using NEPLANs famous graphical interface and NEPLANs powerful, up-to-date calculation algorithms to address a wide range of applications.

**General Characteristics**

- Loads (consumers) can be changed through 3 different load factors (general, regional or simultaneity load factors).
- To each pipe any number of line loads can be connected (e.g. houses, heating …). Importing of consumers from existing databases (e.g. from an accounting database) is possible.
- All load and simultaneity factors of the line loads are considered during the calculation.
- The consumptions can be entered in different units (e.g. l/s m3/h, kW, t/h, etc).
- Simultaneous calculation of multiple partial networks (independent networks).
- Calculation of heat exchanger, heat plant, centrifugal and circulation pumps, reservoirs, valves, fittings, pressure regulators, etc.
- All elements have a temperature dependent thermo hydraulic model.
- It is possible to calculate only the forward flow. The return network must not be entered.
- It is possible to enter also the return network and calculate the forward and return network together.
- The calculation can be done without temperature losses. This can help to debug the network model.
- A powerful up-to-date calculation algorithm (Extended Newton Raphson) is implemented. This allows very easily inserting new element models. The complexity of the models is no longer restricted.
- The head loss characteristics of the pipes are calculated according to Prandtl-Colebrook and Hagen-Poiseuille.
- A load library (household, industrial loads …) with different simultaneity factors can be defined.
- Sophisticated pump and valve models, which allows regulating pressure, flow, pressure differences at any node or element.

**Results**

Upon calculations, results are automatically displayed on the single line diagram while their content and graphical information can be customized. Result evaluation and processing is easier due to visualization functions:

- Coloring according to variable ranges (e.g. velocity, flow, pressure-losses, pressure etc.)
- Highlighting of overloaded elements (e.g. velocity v > v max)
- Line width proportionally to many variables, including the flow and diameter
- Result output to an excel like table sheet, with copy/past possibilities to MS-Excel
- Output to ASCII files or SQL database for further evaluation (e.g. MS-Excel)
- Display results in a sophisticated chart manager (e.g. bar or line chart)
- Result boxes can be moved, deleted, sized, colored and hided
- Self-defined result output: the user can select units, variables, font, precision, placement
- Comparing results was never easier: Results from other variants can be displayed in the same result label and in the same chart
- Display the temperature, temperature losses and power losses in the diagram and in excel like table sheet