Definition: | measurement point at the boundary of a fuel cell power system at which material or energy, or both, either enters or leaves Note 1 to entry: This boundary is intentionally selected to accurately measure the performance of the system, including all normal operation, both steady state and transient. If necessary, the boundary or the interface points of the fuel cell power system to be assessed should be determined by agreement between the parties. Note 2 to entry: Typical conditions to be standardized refer to fuel and oxidant parameters, like compositions, flow rates, temperature, pressure and humidity, as well as to the fuel cell parameters, like temperature.
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