Design of an Automatic Control Algorithm for Energy-Efficient ...
Design of an Automatic Control Algorithm for Energy-Efficient ...
Design of an Automatic Control Algorithm for Energy-Efficient ...
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2 <strong>Control</strong> objectives 7<br />
2.2 Com<strong>for</strong>t<br />
General influences on com<strong>for</strong>t by P.O. F<strong>an</strong>ger c<strong>an</strong> be seen in Figure 2.2. The environmental<br />
factors are those <strong>of</strong> highest interest here since they c<strong>an</strong> be influenced by the climatisation.<br />
The hum<strong>an</strong> <strong>an</strong>d other factors differ between passengers. They need to be estimated the<br />
best possible or adjustable. Among the psychological factors, noise will not be taken into<br />
Figure 2.2: Influences on com<strong>for</strong>t as found by P. O. F<strong>an</strong>ger. [2]<br />
account since it c<strong>an</strong> hardly be influenced by the climate control. Its main source in the<br />
HVAC-unit is the f<strong>an</strong>. This topic will mostly be addressed in the hardware development.<br />
The f<strong>an</strong> speed will also be regarded through the energy consumption objective. A quite<br />
import<strong>an</strong>t factor is odour in the sense <strong>of</strong> air quality since fresh air supply is the main<br />
reason <strong>for</strong> having a ventilation system in a car.<br />
2.2.1 Thermal com<strong>for</strong>t<br />
A well established calculation <strong>of</strong> thermal com<strong>for</strong>t is the one found by F<strong>an</strong>ger in the 1970s.<br />
It is also included in the ISO st<strong>an</strong>dard 7730 [7].<br />
The method is based on a body’s heat bal<strong>an</strong>ce equation:<br />
(2.4)
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