# ZuluNetTools — ActiveX components for utility network modeling

**ZuluNetTools** is an ActiveX component library that enables software developers to incorporate hydraulic analysis and utility network modeling completed in **ZuluThermo, ZuluHydro, ZuluDrain, ZuluSteam** and

**ZuluGaz**, extension modules in COM-based application development environments (Microsoft Visual C++, Microsoft Visual Basic, Borland Delphi, Borland C++Builder and so on) into their applications.

## ZuluNetTools functionalities

- setting a utility network topology model programmatically
- setting input data for calculations and analysis programmatically
- connecting utility networks in
**ZuluGIS**format - launching analysis and modeling for heat networks
**ZuluThermo** - launching analysis and modeling for water supply systems
**ZuluHydro** - launching analysis and modeling for steam networks
**ZuluSteam** - launching analysis and modeling for gas networks
**ZuluGaz** - launching analysis and modeling for wastewater disposal systems
**ZuluDrain** - reading calculation results and error codes programmatically
- outputting analysis protocols and lists of errors
- building piezometric graphs

## ZuluNetTools components

The **ZuluNetTools** library contains components representing a computational model of a utility system or any other kind of network, components for performing calculations and completing analysis tasks as well as a set of visual components (message window, piezometer window) that provide a user interface similar to ZuluGIS interface for integrating engineering calculations into user’s target application.

Figure 1. ZuluNetTools component diagram

## Utility network model (ZCNNetwork, ZCNNetworkCtrl)

The Network component is essentially a utility network model. ZCNNetworkCtrl is an invisible ActiveX element, placed on a form. Its counterpart a ZCNNetwork object is a simple COM object that performs the same functions but is created and used in a linear code.

You can programmatically specify your network model by entering a network graph and setting calculation parameters of network objects. Moreover, you can explicitly indicate a ZuluGIS layer as a computational model.

## ZuluNetTools calculation tasks

Each of the Task components is a set of calculation tasks solved by one of our software packages: ZuluThermo, ZuluHydro, ZuluSteam and ZuluGaz. The components are represented by invisible ActiveX elements placed on a form as well as COM objects with an identical set of methods and properties (see the table below).

ActiveX component | COM object | Product |

ZCNTaskThermoCtrl | ZCNTaskThermo | ZuluThermo (heat energy calculations) |

ZCNTaskHydroCtrl | ZCNTaskHydro | ZuluHydro (water supply calculations) |

ZCNTaskSteamCtrl | ZCNTaskSteam | ZuluSteam (calculations for steam pipelines) |

ZCNTaskGazCtrl | ZCNTaskGaz | ZuluGaz (calculations for gas networks) |

ZCNTaskDrainCtrl | ZCNTaskDrain | ZuluDrain (calculations for wastewater disposal systems) |

Table 1. ZuluNetTools calculation tasks

These components are used to organize calculations forgoing the ZuluGIS user interface. Users set calculation parameters and sources programmatically.

## Messages (ZCNOutputCtrl)

ZCNOutputCtrl is a visual component similar to **the Messages** window in ZuluGIS. If you connect this component to a task component, you will be able to see the calculation progress in this window.

Figure 2. ZCNOutputCtrl component

## Piezometric graph (ZCNPiezoCtrl)

The ZCNPiezoCtrl visual component allows you to build piezometric graphs based on calculation results. It connects to ZCNNetworkCtrl or ZCNNetwork components to receive input data. The component is identical to the ZuluGIS piezometer window.

Depending on the type of the connected network, this component makes it possible to display piezometric graphs for heat and water supply networks; pressure, temperature, enthalpy and steam saturation curves for steam pipelines as well as gas pressure curves for gas network pipelines in a given direction.

Figure 3. ZCNPiezoCtrl component

## Calculation toolbar

The ZCNTaskWinCtrl visual component allows users to embed a calculation toolbar of ZuluThermo, ZuluHydro, ZuluSteam or ZuluGaz software products into the form. With this component, you can implement ZuluGIS calculation and analysis modules into your application preserving the original user interface of these products.

Figure 4. ZCNTaskWinCtrl component with the ZuluThermo built-in calculation toolbar