Method for Monitoring Duct Ventilation
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Abstract
A method for monitoring ventilation in a duct (3) by inserting therein a secondary fan (5) have a low self-contained rotation speed, which method comprises a step of continually measuring an image value (vi) of the current flowing through the motor in order to compare same with a predetermined value and generate a correction signal. The method is particularly useful for ventilating a chamber (2) containing a PEM fuel cell (1).
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Citations
14 Claims
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1-7. -7. (canceled)
- 8. A method for monitoring ventilation in a duct, wherein a secondary fan having a brushless direct current motor is inserted in the duct, a minimum voltage is applied to the motor sufficient to ensure a continuous rotation, an image value of the current passing through the motor is measured continuously and it is compared with a pre-established value in order to generate a correction signal.
Specification