the necessary systems simultaneousl

the necessary systems simultaneously and using them together to draw power from a fuel cell stack. Due to the long start-up period for the gas heating and humidifying systems, they were started well in advance of the other systems. The heating of the water reservoir was begun several hours after the air and hydrogen were started. After achieving steady, acceptable conditions in the air, hydrogen, and coolant systems, the stack was connected to the test apparatus. The following procedure was used to start the testing process: ŁMake sure a well-ventilated lab, ensure that the hydrogen alarm is working well łOpen the load, the flow meter and the oscilloscope, set up the related parameters ŃOpen the switch of the nitrogen tank, use nitrogen to flush the gas pipe and to check the seal of the equipment