GE 16V420 Enclosed Set
Ventilation Calculation
Engine Combustion Air = 5568 m3/min = 1.54 m3/s
1.54 m3/ s
Combustion Area = 3 m/ s = 0.51 m2
Gen-set Radiated Heat = 123 KW
Total Heat = Engine Radiated Heat + Miscellaneous = 123 + 20 = 143 KW
Air Cooling
If air is used for cooling, the needed air flow rate may be expressed as:
qc = Hc / ( cp (to - tr)) =143000/(1.1*1000(50-40))=13 m3/s
13 m 3/s
Ventilation Area = 3 m/s = 4.3 m2.
where
qc = volume of air for cooling (m3/s)
Hc = cooling load (W)=143000
to = outlet temperature (oC) where to = tr if the air in the room is mixed
where
cp = specific heat air (J/kg K)=1000
ts = supply temperature (oC)=50
tr = room temperature (oC)=40
= density of air (kg/m3)=1.1
Spe
cifi Expa
De Ther Kine
c nsio Pra
nsi mal mati
Temp He n ndtl
ty Cond c
eratur at Coef 's
- uctivi Visc
e - cp ficie Nu
- ty osity
-t- - nt mbe
(kg -k- --
(oC) (kJ -b- r
/m3 (W/ x 10-
/ 6 x 10- -
) (m (m2 3
(kg (1/ Pr -
K)) /s)
K)) K)
2.7 1.0 0.011
-150 3.08 8.21 0.76
93 26 6
1.9 1.0 0.016
-100 5.95 5.82 0.74
80 09 0
1.5 1.0 0.020 0.72
-50 9.55 4.51
34 05 4 5
1.2 1.0 0.024 13.3 0.71
0 3.67
93 05 3 0 5
1.2 1.0 0.025 15.1 0.71
20 3.43
05 05 7 1 3
1.1 1.0 0.027 16.9 0.71
40 3.20
27 05 1 7 1
1.0 1.0 0.028 18.9 0.70
60 3.00
67 09 5 0 9
1.0 1.0 0.029 20.9 0.70
80 2.83
00 09 9 4 8
100 0.9 1.0 0.031 23.0 2.68 0.70
Spe
cifi Expa
De Ther Kine
c nsio Pra
nsi mal mati
Temp He n ndtl
ty Cond c
eratur at Coef 's
- uctivi Visc
e - cp ficie Nu
- ty osity
-t- - nt mbe
(kg -k- --
(oC) (kJ -b- r
/m3 (W/ x 10-
/ 6 x 10- -
) (m (m2 3
(kg (1/ Pr -
K)) /s)
K)) K)
46 09 4 6 3
0.8 1.0 0.032 25.2
120 2.55 0.70
98 13 8 3
0.8 1.0 0.034 27.5 0.69
140 2.43
54 13 3 5 5
0.8 1.0 0.035 29.8
160 2.32 0.69
15 17 8 5
0.7 1.0 0.037 32.2
180 2.21 0.69
79 22 2 9
0.7 1.0 0.038 34.6 0.68
200 2.11
46 26 6 3 5
0.6 1.0 0.042 41.1
250 1.91 0.68
75 34 1 7
0.6 1.0 0.045 47.8
300 1.75 0.68
16 47 4 5
0.5 1.0 0.048 55.0
350 1.61 0.68
66 55 5 5
Spe
cifi Expa
De Ther Kine
c nsio Pra
nsi mal mati
Temp He n ndtl
ty Cond c
eratur at Coef 's
- uctivi Visc
e - cp ficie Nu
- ty osity
-t- - nt mbe
(kg -k- --
(oC) (kJ -b- r
/m3 (W/ x 10-
/ 6 x 10- -
) (m (m2 3
(kg (1/ Pr -
K)) /s)
K)) K)
0.5 1.0 0.051 62.5
400 1.49 0.68
24 68 5 3
1 slug = 14.594 kg = 32.174 lbm
Specific
Temperature Density Thermal Kinematic Expansion
Heat
-t- -- Conductivity Viscosity Coefficient Prandtl's Number
- cp -
(oC) (kg/m3) -k- -- -b- - Pr -
(kJ/(kg K))
(W/(m K)) x 10-6 (m2/s) x 10-3 (1/K)
-150 2.793 1.026 0.0116 3.08 8.21 0.76
-100 1.980 1.009 0.0160 5.95 5.82 0.74
-50 1.534 1.005 0.0204 9.55 4.51 0.725
0 1.293 1.005 0.0243 13.30 3.67 0.715
20 1.205 1.005 0.0257 15.11 3.43 0.713
40 1.127 1.005 0.0271 16.97 3.20 0.711
60 1.067 1.009 0.0285 18.90 3.00 0.709
80 1.000 1.009 0.0299 20.94 2.83 0.708
100 0.946 1.009 0.0314 23.06 2.68 0.703
120 0.898 1.013 0.0328 25.23 2.55 0.70
140 0.854 1.013 0.0343 27.55 2.43 0.695
160 0.815 1.017 0.0358 29.85 2.32 0.69
180 0.779 1.022 0.0372 32.29 2.21 0.69
200 0.746 1.026 0.0386 34.63 2.11 0.685
250 0.675 1.034 0.0421 41.17 1.91 0.68
300 0.616 1.047 0.0454 47.85 1.75 0.68
Specific
Temperature Density Thermal Kinematic Expansion
Heat
-t- -- Conductivity Viscosity Coefficient Prandtl's Number
- cp -
(oC) (kg/m3) -k- -- -b- - Pr -
(kJ/(kg K))
(W/(m K)) x 10-6 (m2/s) x 10-3 (1/K)
350 0.566 1.055 0.0485 55.05 1.61 0.68
400 0.524 1.068 0.0515 62.53 1.49 0.68
