Details on the Section Parts Table
Information on the Section parts table in the calculation dialog for ventilation.
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Table for pressure loss calculation
This table shows the calculation data for all section parts of the selected flow path. If you select a section part, the table Components displays all corresponding components.
Fix/unfix section parts
Opens the dialog Fix/unfix sections parts where you can lock or unlock the dimensioning of all components of the selected system, the selected flow path or the selected section part. Fixed dimensions are shown in bold in columns a, b or d and are not changed during dimensioning.
| Column | Description |
|---|---|
| No. | Number of the section part. |
| Type | Pipe type. OA: Outdoor air SU: Supply air EX: Extract air EXH: Exhaust air |
| T | Air temperature. |
| F | Volume flow, if necessary converted taking into account the temperature and the associated air density. |
| l | Cumulative length of all pipes or ducts of this section part. The length be changed in the table. The new length will be distributed among all pipes of the section parts proportionately to constructed length. All pipes affected by the change in length will be displayed bold in the tables for section parts and components. |
| a | Height of the duct for rectangular- or oval-duct. |
| b | Width of the duct for rectangular- or oval-duct. |
| d (dh) | Diameter of the duct for round ducts (the hydraulically equivalent diameter for oval or rectangular cross sections). |
| v | Velocity. |
| R | R-value for straight pipes or ducts. |
| l*R | Pressure loss due to pipe friction in this section part. |
| Zeta | Total of zeta values for all components in this section part. |
| Z | Pressure loss due to zeta value. |
| dp | Total of all pressure losses. |
| dpFP | Static pressure recovery. |
| dpA | Total pressure loss. |
| Residual dB (only for sound level calculation) | Unweighted sound level at the outlet of this section part. |
Table for sound level calculation
| Column | Description |
|---|---|
| No. | Number of the section part. |
| Type | Pipe type. OA: Outdoor air SU: Supply air EX: Extract air EXH: Exhaust air |
| T | Air temperature. |
| F | Volume flow, if necessary converted taking into account the temperature and the associated air density. |
| l | Cumulative length of all pipes or ducts of this section part. The length be changed in the table. The new length will be distributed among all pipes of the section parts proportionately to constructed length. All pipes affected by the change in length will be displayed bold in the tables for section parts and components. |
| a | Height of the duct for rectangular- or oval-duct. |
| b | Width of the duct for rectangular- or oval-duct. |
| d (dh) | Diameter of the duct for round ducts (the hydraulically equivalent diameter for oval or rectangular cross sections). |
| v | Velocity. |
| Octave frequency bands | Unweighted sound power level of all eight octave bands at the end of the section part. |
| Residual | Unweighted sound power level at the end of the section part. |