Calculation of Ventilation

Calculation of Ventilation

The modification of the flap position is calculated according to following formula

in the :  deviation = internal temperature set value

D-component = (internal temperature internal temperature last ) * difference time / sample time

Gain pos = Gain + position * ( Gain - Gain ) / l00

VF = 1.0, if outside temperature is higher than internal temperature - 8.0 C, otherwise

VF = 1.0 winter factor) * (internal temperature outside temperature - 8) / 12

Example 1:

Gain @ 100 % 1.8 %

Gain@0%  0.8%

accept belt 0.1 C

sample time 2 Min.

winter factor 1.0

difference time 15 Min.

deviation = 28.7 - 28.0 = 0.7 C

D-component = (28.7 - 28.7) * 15/ 2 = 0

Gain = 0.8 + 33.3 * (1.8-0.8) / 100 = 1.133

Lflap

deviation = 28.9 - 28.0 = 0.9 C

D-component = (28.9 - 28.7) * 15 / 2 = 1.5

Gain = 0.8 + 34.1 * (1.8-0.8) / 100 = 1.141

Lflap

deviation

D-component =

Gain =

Lflap

deviation

D-component -

Gain =

L * 1.0 --------- * -------------(-0.94)