Environmental Engineering Reference
In-Depth Information
The results will be presented in the following order:
-
Sensible heat
combined system analysis
evaporative cooler analysis
o
heat pipes battery analysis
-
Latent heat
o
evaporative cooler analysis
-
Total heat
o
evaporative cooler analysis
S
ENSIBLE
H
EAT
R
ECOVERED
Combined System
In Figure 11 the average values of sensible heat recovered are plotted against single
factors levels (temperature (T) and airflow (V)), in Figure 12 the mean values of the
characteristic are plotted against factor interaction (VxT). The corresponding values are also
given. In table 6 the ANOVA is presented. In the ANOVA table column 1 shows the factors
analyzed, which are: volumetric flow rate (Vi), temperature and the interaction between the
aforementioned factors (VxT). Column 2 represents the degree of freedom (Dof) of the
factors analyzed. Column 3 shows the sum of squares (SS) of the factors column 4 gives the
associated variance values (V) and in column 5 the contributory percentage is given (%).
Furthermore, remarkable conclusions in terms of the most contributory factor are fully
addressed.
Mean
Values
Factors
2000
V1
-1124.22
1000
V2
-1439.77
0
V3
-1691.29
T1
977.19
-1000
T2
577.93
-2000
T3
-203.78
T4
-785.89
-3000
T5
-1220.62
-4000
T6
-1984.62
-5000
T7
-2591.93
T8
-3491.74
V1
V2
V3
T1
T2
T3
T4
T5
T6
T7
T8
T9
T9
-4042.37
Single Factors
Figure 11. Average values of sensible heat recovered are plotted against single factors levels.
