.BuildingControlLib.BuildingControl.VDI3813.ApplicationFunctions.Internal.AutomaticThermalControlFunctionality

Information

Overview

Block that implements functionality of "Automatic thermal control" from VDI 3813 [1, section 6.5.17, p. 59 - 61].

Functional Description

"By means of Automatic thermal control (RA-FL section 6, column 16; informative function block Figure 38), the sunshade is used in unoccupied rooms to support heating or cooling by deliberately admitting or preventing solar heat inputs. This helps avoiding overheating in summer and reducing the heating load in winter. To this end, the application function processes the input information about the occupancy state of the room (Occupancy evaluation), the outdoor brightness (Brightness measurement), the room temperature (Temperature measurement) and the setpoints (Setpoint calculation) and, on this basis, generates positioning commands for the sunshade."[1, section 6.5.17, p. 59 - 61]

Fig. 1: UML activity diagram of the application function Automatic thermal control,[1, section 6.5.17, p. 59 - 61]

Modelling Assumptions

A time constant t = 60 s has been introduced in transition t7 to avoid oscillations in sunshade actuation.

Revisions

• March 07, 2017  by Georg Ferdinand Schneider & Georg Ambrosius Peßler:
  Implemented.