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Global Power Technologies 14
S-8500
Humidity
The cooling system will be more effective as humidity increases. As humidity can rarely be
controlled at a particular site, it will not be considered further.
Wind
The cooling system is designed to generally be unaffected by wind because the external
duct creates a natural chimney type draft. As wind can rarely be controlled at a particular
site, it will not be considered further.
Altitude
With increasing altitude, the air becomes less dense and the ability of the cooling system
to transfer heat to the air less effective. Further adjustments will need to be made to the
air intake shutter, opening more with increased altitude, to provide sufficient oxygen to the
burner for full combustion of the fuel. GPT’s manufacturing facility sits at 750 m above sea
level. Performance will increase at lower altitudes. At sea level, the performance will improve
by about 5% (545W output). At 3000 m, the performance may be up to 15% lower (450 W
output). The following chart shows the power multiplication factor as a function of altitude
above sea level.
Figure 5 Thermoelectric Power Unit Ambient Temperature Derate Curve
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
25ºC
77ºF
30ºC
86ºF
35ºC
95ºF
40ºC
104ºF
45ºC
113ºF
50ºC
122ºF
55ºC
131ºF
60ºC
140ºF
65ºC
149ºF
A
mb
ie
nt
T
emp
era
tu
re
P
erf
orma
nc
e F
ac
to
r
Ambient Temperature [
º
C]
64261 rev0
Summary of Contents for S-8500
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Page 63: ...Global Power Technologies 57 S 8500 Figure 29 CP Panel wiring schematic ...
Page 65: ...Global Power Technologies 59 S 8500 Figure 30 DC DC Converter Connections ...
Page 66: ...Global Power Technologies 60 S 8500 Figure 31 DC DC Converter with CP Panel wiring schematic ...
Page 72: ...Global Power Technologies 66 S 8500 Figure 32 Flowchart Battery Charging Application Setup ...