Environmental Engineering Reference
In-Depth Information
35
30
25
20
15
Ambient temperature
Room temperature
10
15
17
19
21
23
25
27
29
1
June
July
Figure 3.13 Ambient air and room temperatures in the SIC building during June 2005
3.2.4 Active Night Ventilation
Mechanical Exhaust Air Ventilation in the SIC Building
The active night ventilation system of the SIC building with its two air exchanges per
hour was capable of reducing room temperature by about 3 K during the hot weeks
of June 2005 (see Figure 3.13). During such extended warm periods, this leads to
ever-increasing room air temperatures which reached up to 26 C in the morning and
29 C in the afternoon.
The measured average nightly cooling power for the 14-day hot period was 215 kW,
which corresponds to 15Wm 2
or 120Wh m 2
per night removed cooling load
(Figure 3.14).
400
350
300
250
200
150
100
50
0
15
17
19
21
23
25
27
29
1
3
June
July
Figure 3.14 Cooling power of mechanical night ventilation in the SIC building in summer 2005
 
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