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3.4.5 Airflow requirements
Fuel cell system requires airflow for reaction oxidant as well as cooling. Figure 3.4.5
below shows the estimated airflow requirements of the H-1000XP at different power
outputs.
Slight contaminant level in the operating environment has insignificant effect on the
H-1000XP performance over the full product lifetime. Exposure to high level of
contamination in the operating environment will lead to a drop in performance drop,
which may or may not be recoverable. If the operating environment is expected to
be very dusty, filter for the oxidant and cooling air may be required.
3.4.6 Ambient temperature
One factor that affects the H-1000XP performance is ambient temperature. Higher
temperature leads to the drying up of the proton exchange membranes inside the
fuel cell stack, reducing proton conductivity and consequently the power output of
the fuel cell.
The H-1000XP can deliver its rated performance when operating at ambient
temperature ranging 0-35°C* and a relative humidity range of 10-90%. At a given
environment temperature, the H-1000XP performance increases with a higher level
of relative humidity.
Figure 3.4.5 Airflow curve for H‐1000XP system
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