Civil Engineering Reference
In-Depth Information
Table 13.2
(continued)
HOT SEASON MODE (see Fig.
13.6
)
Recovery system
Equivalent fuel-fed boiler
After dehumidification RH 100 % 12
C
3
/h
A
200,000
B¼A
/0.815
Dry air mass flow rate
kg/h
245,399
C
¼
B
0.0076
Moisture flow rate
kg/h
1,865
C
D
Temperature increase
5
E
¼
D
(1 + 0.0076
1.8)
Enthalpy increase per kg dry air
kJ/kg
5.07
F
¼
E
B
Heat
kJ/h
1,243,779
1,243,779
F
0
¼F
/3,600
kW
345
345
F
00
¼
F
/1.055
Btu/h
1,178,938
1,178,938
G
Boiler efficiency
0.85
H
¼
F
/
G
Boiler consumption (natural gas)
kJ/h
1,463,270
H
0
¼
H
/3,600
kW
406
H
00
¼H
/1.055
Btu/h
1,386,985
Sm
3
/h
I
¼
H
/34,325
42.6
L
Additional electricity consumption
kW
20
0
m
3
/h
Inlet air flow rate RH 50 % 30
C
M
500,000
N
¼
M
/0.87
Dry air mass flow rate
kg/h
574,713
O¼N
0.0133
Moisture flow rate
kg/h
7,644
P
Outlet-inlet temperature drop
C
2.2
Q
¼
P
(1 + 0.013
1.8)
Enthalpy drop per kg dry air
kJ/kg
2.047
2.047
R
¼
Q
N
Heat extracted
kJ/h
1,176,943
1,176,943
R
0
¼
R
/3,600
kW
327
327
R
00
¼R
/1.055
Btu/h
1,114,997
1,114,997
S
Refrigeration plant COP
4.5
R
0
/
S
T
¼
Electric energy consumption
kW
72.6
V
Additional electricity consumption
kW
10
Z
Working hours
h/year
1,250
1,250
