Skip to main content
. 2009 Jul 23;45(3):559–565. doi: 10.1016/j.buildenv.2009.07.011

Table 1.

The measured ventilation rates due to natural ventilation.

Test Date Location Windows/doors to outdoor Door to corridor Fans Room type Outdoor conditions
 ACH (average value)
Wind speed/direction (°) Temperature (°C)
1a 9-11, 2005 Cubicle 7; 6/F,GH 100% open 100% open Off 2 beds ward 3.2/160 28.7 30.3
2 9-11, 2005 Cubicle 7; 6/F,GH 100% open Close Off 2 beds ward 2.9/150 29.4 17.6
3 9-11, 2005 Cubicle 7; 6/F,GH 50% open Close Off 2 beds ward 2.8/170 29.4 14.6
4 9-11, 2005 Cubicle 4; 6/F,GH 100% open 100% open Off 2 beds ward 3/160 29.3 42.2
5 9-11, 2005 Cubicle 4; 6/F,GH 100% open Close Off 2 beds ward 2.4/170 29.1 15.4
6 9-11, 2005 Cubicle 4; 6/F,GH 50% open Close Off 2 beds ward 2.2/160 27.0 10.7
7 9-11, 2005 Cubicle 4; 6/F,GH 100% open Close On 2 beds ward 1.8/200 26.5 22.5
8a, b 10-11, 2005 Cubicle 0; 2/F,GH 100% open 100% open Off 2 beds ward 2.5/150 28.3 60.2
9b 10-11, 2005 Cubicle 0; 2/F,GH 100% open Close Off 2 beds ward 3.4/150 28.5 16.0
10b 10-11, 2005 Cubicle 0; 2/F,GH 50% open Close Off 2 beds ward 4.1/165 28.7 12.9
11b 10-11, 2005 Cubicle 7; 2/F,GH 100% open 100% open Off 5 beds ward 3.2/160 29.2 69.0
12 10-11, 2005 Cubicle 7; 2/F,GH 100% open Close Off 5 beds ward 3.2/135 28.9 31.6
13 10-11, 2005 Cubicle 7; 2/F,GH 50% open Close Off 5 beds ward 3.1/110 29.2 23.5
14 10-11, 2005 Cubicle 7; 2/F,GH Close 100% open Off 5 beds ward 2.4/130 28.2 8.7
15 28-08, 2006 Cubicle 4; 6/F,GH Close Close Off 2 beds ward 2.7/150 29.3 0.71
16 28-08, 2006 Cubicle 4; 6/F,GH 100% open Close Off 2 beds ward 4.8/90 30.4 14.0
17 28-08, 2006 Cubicle 4; 6/F,GH 100% open 100% open Off 2 beds ward 4.5/95 29.3 18.5 (8.8)c
18 28-08, 2006 Cubicle 4; 6/F,GH Close Close On 2 beds ward 2.7/140 28.4 12.6
19 28-08, 2006 Cubicle 4; 6/F,GH 100% open Close On 2 beds ward 4.1/120 29.9 14.6
20 28-08, 2006 Cubicle 4; 6/F,GH 100% open 100% open On 2 beds ward 4.1/100 29.5 29.2
21a 6-11, 2005 Cubicle 4; 2/F, SYP 100% open 100% open Off Single room 1.9/165 28.7 °C 18.8
22a 6-11, 2005 Cubicle 4; 2/F, SYP 50% open 100% open Off Single room 2.3/135 29.1 °C 12.8
23a 6-11, 2005 Cubicle 4; 2/F, SYP Close Close Off Single room 1.3/220 27.4 °C 0.6
24a 6-11, 2005 Cubicle 4; 2/F, SYP Close 100% open Off Single room 1.6/220 26.9 °C 3.4
25 7-11, 2005 Waiting Area, 2/F, SYP 100% open 100% open Off – 2.4/140 27.5 °C 11.9
26 7-11, 2005 Waiting Area, 2/F, SYP 50% open 50% open Off – 3.2/135 27.6 8.45
27 7-11, 2005 Cubicle 20, 2/F, SYP 50% open 50% open Off Single room 2.9/140 27.3 11.5
28 7-11, 2005 Cubicle 20, 2/F, SYP 100% open 100% open Off Single room 2.7/140 26.9 22.5
a

The window air conditioner is on in the ward during the experiment.

b

Tests 8 and 11: The ventilation rates of Tests 8 and 11 were so high that the sampler failed to sample adequate data. The ventilation rate is calculated according to the inadequate data.

c

Test 17: The measured ventilation rate for Test 17 is about 18.5 ACH. However, an unknown disturbance was also recorded by the equipment during a short unstable period with the ventilation rate as low as 8.8 ACH.