Ventilation system design

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We describe possible strategies to build, edit and develop a network in a step-wise fashion in a building with several storeys.

For the described actions, open a model of the discipline Lüftung.

General procedure

To make the job effective, consider the space requirements of the system from the beginning. Work with the expected dimensions, and think about insulation as well as possible size changes using a network calculation.

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Working in the manhole

The positions of the ventilation centre and manhole are set with the complete building design. You know how to measure the total air volumes and can measure the cross section of the main channels with this.

You develop the network in a step-wise fashion using these assumptions. Simulate the consumer in this early stage using load objects in order to calculate the network in each processing step . Enter the estimated or roughly calculated demand value in these objects.

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Prepare the positions in the manhole	Take to the first storey, use a load object	Transfer to the following storeys
	Start a ventilation duct for each medium starting with the ventilation central equipment room, lead it to a shaft and transfer it to the next storey .		Open the next storey and take all media into the continuous ventilation duct. Produce a branch and end it with a load object in order to prepare the distribution on the storey.		You can transfer the prepared ventilation ducts of one storey to all floors using Copy and Paste. You also take over the connected load objects and correct their discharge units to the conditions of the respective storeys.
See also Start – Free point Terminate – In the storey below Terminate – In the storey above	See also Start – From adjacent storey Branch of from a horizontal segment Terminate – With a load object	See also Copy risers to another floor

Prepare the positions in the manhole

Take to the first storey, use a load object

Transfer to the following storeys

Start a ventilation duct for each medium starting with the ventilation central equipment room, lead it to a shaft and transfer it to the next storey

Open the next storey and take all

media into the continuous ventilation duct. Produce a branch and end it with a load object

in order to prepare the distribution on the storey.

You can transfer the prepared ventilation ducts of one storey to all floors using Copy and Paste. You also take over the connected load objects and correct their discharge units to the conditions of the respective storeys.

Design ventilation system

The construction of a duct network is divided into three phases:
At the start you decide on the technical parameters and the direction of the first segment. Next, you define the course and eventually terminate the duct.

For each phase you can choose an appropriate operation depending on the situation.

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Insert object in duct

These objects are always inserted into an existing pipe system afterwards.

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Select the desired description.

	Transition			Access Door
	Attenuator			Sample
	Damper			Heating Coil
	Grille			Cooling Coil
	Accessory			Fan
	Heat Exchanger			Resistance Object
	Filter

Edit ventilation system

You have many options to edit a pipe system afterwards.

Important!

If you shift a riser, then check the risers on the neighbouring storeys. The connected risers for all floors must stand superimposed over one another on all storeys after the operation is completed.

General editing functions

Edit course

Change properties in the course

Operations and help functions for building a network

Various help functions support the construction of a pipe network. Take advantage of these functions when required.

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Copy risers to another floor

Repeat Branch

Automatic Connection

Check and Verify Models

Configure presentation

Use the options in the View menu for situation-appropriate presentation of the pipe network.

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Advanced Representation
On		Pipework is displayed with nominal diameters and insulator thicknesses relevant to the selected materials. The representation shows the actual space needs.
Off		Pipework is shown in one line. The medium is symbolized by color and line type.

Drawing direction (Arrows)
On		The running direction is shown using arrows.
Off		The running direction is not shown.

Color Visualizes Velocity Level
On		Colors visualize the association of a system part to a speed level.
Off		Colors show the medium.

Color Visualizes System State

Colors show the status of a part of the system in regards to all defined limit values.

			The lines are not calculated or have no volume flow rate.
			The speed is within tolerances.
			The speed is too low. Color saturation shows the degree of tolerance deviation.
			The speed is too high.

Off

Colors show the medium.

Color Visualizes System State

Colors show the medium.

			The network shows in the rendered model in accordance with the materials used.
			The speed is within tolerances.
			The speed is too low. Color saturation shows the degree of tolerance deviation.
			The speed is too high.

Off

Colors show the medium.

Drawing direction (Arrows)
On		The running direction is shown using arrows.
Off		The running direction is not shown.