4.4.3. Control of water vapour condensation in partition <br>

### 4.4.3. Control of water vapour condensation in partition

In lower part of edition window following fields can appear. They are active for external partitions being in contact with air. These partitions have declared laminar construction. Field designated with icon is used for displaying of temperature diagrams. If the User „General data” will select additional calculations option „Calculate condensation within the partition”, on the same diagram will be displayed diagram of partial pressure and diagram of water vapour saturation in partition.

If the icon appears, it means that there is condensation in partition and this is a suggestion for the User that this partition must be redesigned.

If the icon appears, it means that the condensation in partition is occurring on the inner surface of it.

Clicking the icon will cause displaying the window for edition of temperature and humidity of air on inner and outer side of partition as data for condensation control (without connection with real application of partition in a building design).

These fields are empty, if they don’t concern a specific partition (for example internal partition, partitions being in contact with the ground) or filled with grey colour, if program is not able to calculate temperature drops or condensation in partition, for example for partition with enforced „U” coefficient .

On diagram of water vapour temperature and pressure drops in partition the User can check values of temperatures and pressures on layers borders, moving the mouse cursor on individual layers.

Diagram of temperature drops is represented by fractured line, the colour and line type of which is defined in legend. Similarly has been presented the layout of partial pressures and water vapour saturation in partition. If the diagrams intersect each other and the apparent pressure of water vapour exceeds the saturation pressure, then the condensation takes place in partition. You can see it on diagram as a hatched field.

On the diagram has been presented graphically the condensation of water vapour on inner surface of partition in form of water drops.