Environmental Engineering Reference
In-Depth Information
Table 24. VxT interaction mean values
Sensible Heat (W)
Mean
Value
Factors
Mean Value
Factors
Mean Value
Factors
V1T5
-18.13
V2T5
-23.36
V3T5
-51.73
V1T6
-38.99
V2T6
-66.24
V3T6
-88.55
V1T7
-51.18
V2T7
-104.19
V3T7
-109.67
V1T8
-100.26
V2T8
-143.52
V3T8
-133.08
V1T9
-152.08
V2T9
-162.14
V3T9
-154.25
Table 25. ANOVA
Factors DoF
SS
V
%
V
2
234869.36
117434.68
10.38
T
8
1676654.00 209581.75 74.10
VxT
16
351256.57
21953.54
15.52
Error
0
0.0
0.0
0.00
Total
26
2262779.9
87029.99
100.00
Table 26. ANOVA (heating and cooling mode)
Heati n g Mode
Cooli ng Mode
Factors DoF %
DoF %
V
2
10.77
2
39.66
T
3
56.58
4
26.23
VxT
6
32.65
8
34.11
Error
0
0.00
0
0.00
Total
11
100.00
14
100.00
Analysis of Results
All the factors and interaction with a percentage of contribution in the ANOVA higher
than 15% are considered.
Air Flow
Cooling Mode : This factor presents the highest contributory percentage (39%). A
priori, it is thought that when the airflow rises the latent heat recovered also does,
due to the increase in the mass heat coefficient, nevertheless, the convective mass
diffusion does not limit mass transport, thus it cannot be considered the controlling
resistance. It was observed that when increasing the airflow above 400 m3/h, the
humidity addition lowers (in absolute terms), this means that this airflow value can
be considered as a maximum, reaching this value the system behaves as a current
Search WWH ::




Custom Search