Environmental Engineering Reference
In-Depth Information
indirect evaporative cooler system, diminishing the latent heat recovered. To observe
the aforementioned fact (“so called” by-pass effect), a series of charts are provided (
See Tables 27-29). In this tables, in the last column the specific humidity values are
provided.
Table 27. Results for 300 m
3
/h.
T
1
(C)
x
1
(g
water
/ kg
dry air
)
T
2
(C)
x
2
(g
water
/ kg
dry air
)
T1-T2
(C)
x
1
-x
2
(g
water
/ kg
dry air
)
5.3
0.0035
8.9
0.0041
-3.6
0.6
9.8
0.0035
11.7
0.0040
-1.9
0.5
13.9
0.0037
13.5
0.0040
0.4
0.3
21.1
0.0081
18.4
0.0088
2.6
0.7
23.3
0.0083
20.0
0.0096
3.3
1.3
29.9
0.0091
24.0
0.0102
5.9
1.2
33.2
0.0087
26.1
0.0100
7.1
1.3
39.3
0.0090
29.4
0.0108
9.9
1.7
44.3
0.0101
34.0
0.0109
10.2
0.7
Table 28. Results for 400 m
3
/h.
T
1
(C)
x
1
(g
water
/ kg
dry air
)
T
2
(C)
x
2
(g
water
/ kg
dry air
)
T1-T2
(C)
x
1
-x
2
(g
water
/ kg
dry air
)
4.9
0.0035
7.3
0.0037
-2.4
0.2
10.7
0.0032
12.0
0.0037
-1.3
0.4
14.6
0.0036
13.9
0.0039
0.7
0.4
21.5
0.0086
19.9
0.0091
1.6
0.5
23.4
0.0078
20.7
0.0084
2.6
0.6
30.7
0.0094
25.3
0.0105
5.4
1.1
33.8
0.0093
28.2
0.0102
5.6
0.9
39.4
0.0082
31.6
0.0090
7.8
0.8
44.8
0.0099
33.9
0.0109
10.9
1.0
Table 29. Results for 500 m
3
/h.
T
1
(C)
x
1
(g
water
/ kg
dry air
)
T
2
(C)
x
2
(g
water
/ kg
dry air
)
T1-T2
(C)
x
1
-x
2
(g
water
/ kg
dry air
)
4.2
0.0034
5.4
0.0036
-1.21
0.3
10.1
0.0032
11.4
0.0033
-1.28
0.1
14.3
0.0035
13.5
0.0036
0.76
0.1
19.6
0.0081
18.0
0.0085
1.61
0.4
25.4
0.0076
22.5
0.0080
2.94
0.4
30.1
0.0090
26.1
0.0095
3.95
0.5
34.5
0.0087
28.3
0.0092
6.20
0.5
39.1
0.0088
32.0
0.0094
7.13
0.6
44.5
0.0087
35.7
0.0092
8.79
0.5
