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In the Hysopt software, hydronic systems are modeled according to the so-called 'Basic Circuit Methodology' (BCM). With this unique modeling concept systems are designed as a modular composition of elementary Basic Circuits (BC'sBCs) instead of elementary elementary components (like pumps, pipes, valves,...). This way systems can be modeled much faster. Moreover, we can embed much more intelligence into the model as the software actually 'knows' what is built. Unlike the typical CAD software, the system model is not just a graphical representation of the system. However a complete hydraulic and thermal calculation model is generated at the back-end of the software while modeling the systems, which allows the designer to automate the design process and to thoroughly optimize the systems' performance.
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Systems are built in the drawing canvas according to the following workflow:
First, the appropriate basic circuits must be dragged & dropped into the drawing canvas.
Secondly, the basic circuits are connected to each other using the right piping tools.
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The following graphical operations are provided for basic circuits and piping by means of hot keysusing hotkeys.
Rotate clockwise R
Rotate counterclockwise Shift+R
Flip left/right F
Flip-up/down Shift+F
Flip reverse return chain G
Note that these graphical operations can be used both before and after the drop. All graphical operations can also be used from the operations buttons in the upper tool bartoolbar.
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Zooming and panning
The far most important tools to navigate across your model are 'ZOOMING' and 'PANNING'. You can zoom in and zoom out using the mouse scroll wheel. Push in the right mouse button to pan the canvas. Sometimes a 'zoom to fit ' (Ctrl+F) might be useful.
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Once the basic circuits are dragged & dropped into the drawing canvas they need to be connected with each other using the right piping tools. Hysopt supports 2-pipe systems, reverse return ('Tichelmann'), and collector piping. The appropriate pipe type can be selected by clicking on the respective icon or by using the hot key hotkey 'D' with which you can toggle between the different pipe types. The mouse cursor indicates the pipe type as follows:
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When drawing poly-line pipes, the supply pipe is always situated on the right side of the direction in which the polyline is drawn. However, supply and return pipes can be easily swapped using the flip (F) function. This way the drawing can be organized to avoid crossing of pipes. However, note that this is only a graphical operation and it has no impact on the thermal-hydraulic calculation model.
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Pipe branches can be easily modeled by taking the starting position of the new poly-line on top of an existing pipe segment. When hoovering hovering the mouse cursor across the existing pipe segment, the pipe pipe segment is marked green to indicate that a branch pipe can now be drawn. In the opposite wayOppositely, a poly-line can also end on top of an existing pipe segment in order to connect the two pipes.
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Node-based
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modeling
Note that the Hysopt design environment is node-based which means that all nodes (black dots at the start and end point endpoint of a pipe segment), as well as all basic circuits, can be pivoted freely without breaking the model. Doing In doing so, nodes and basic circuits can be selected individually our or as a group. This feature is particularly interesting to rearrange the drawing, e.g. to provide more space in between certain system parts.
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When removing nodes from a poly-line (select the node and delete it), the adjacent nodes of the removed node are connected directly with each other with one straight pipe segment. Sometimes, it might be useful as well to add a node to a poly-line in order to pivot the poly-line using this new node. The latter can be done by starting a branch pipe on the poly-line (left mouse button), but not finishing the branch with an end node (press Esc function or right mouse button).
Copy / Paste functionality
Complete systems, as well as parts of a system, can be copied using the Copy / Paste functionality (Ctrl+C, Ctrl+V). This way large systems can be modeled very fast by copying repetitive system parts. E.g. first a single apartment is modeled in detail and than then copied 50 times to model the total system of the complete apartment building. Experienced Hysopt users are trained to recognize repetitive system parts before they start modeling and save a lot of time this way.
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Basic circuits can be replaced by other types of basic circuits by using the replace functionality (Ctrl+H , see operations button). Multiple basic circuits can be replaced at once. E.g. in the system illustrated below, the three active mixing circuits are replaced by three passive mixing circuits with a single replace operation.
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