Abstract
Proper membrane hydration is critical to the performance of a fuel cell powertrain, which is an important potential low-carbon energy system for future medium- and heavy-duty vehicles. However, direct measurement of relative humidity in a fuel cell gas stream is complicated by multiple factors. First, the sensor must be able to operate within an environment with elevated temperature and pressure. Additionally, the de-ionized water used in such systems can leach metals and is therefore not compatible with all materials. Finally, the sensor must not only be accurate, but must have sufficient time resolution to capture important transient information from the fuel cell system. Therefore, it would be a significant advantage for fuel-cell system control if a relative humidity sensor with the above-mentioned attributes could meet the cost and robustness requirements necessary to be implemented in a production vehicle
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Anonymous, "Method for Optical Measurement of Relative Humidity in a Fuel Cell System", Technical Disclosure Commons, (February 02, 2025)
https://www.tdcommons.org/dpubs_series/7794