Operating manual for the PSE and G hydrogen reservoir containing iron titanium hydride
The manual was written for use with the experimental energystorage system. Information is provided on how the reservoir functions and how it can be safely operated. In combination with a water electrolyzer and a fuel-cell stack, the hydrogen reservoir provides a new way of storing energy. The reservoir is the storage unit in the system; it is used to store hydrogen from the electrolyzer and subsequently release it to the fuel-cell stack. A reservoir for hydrogen consists of a closed vessel filled with granular metal hydride and provided with a particle barrier, a gas connection, and a means of handlirg the necessary thermal load. In this case the hydrogen is stored as iron titanium hydride in a pressure vessel; porous metal tubing is used for the barrier, and an internal heat exchanger is provided to handle the thermal load. The hydride may be cycled many times provided gaseous impurities that degrade its performance are excluded from the system. Water at readily available temperatures (approximately 60 and 120 deg F) is suitable for use as the heat exchange medium. Tests have shown that design specifications may be exceeded. It will take up H/sub 2/ at a rate >1.5 lb/hr, deliver it at a rate>1.0 lb/hr, and its working capacity is significantly more than the 10 lb of H/sub 2/ originally specified. A compressor (500-psig rating) is required to pressurize H/sub 2/ leaving the electrolyzer in order to obtain a practical sorption rate. The temperature and flow rate of the water in the heat exchanger tubes also are an important factor with respect to sorption and desorption rates. (MCW)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y. (USA)
- NSA Number:
- NSA-29-031449
- OSTI ID:
- 4305043
- Report Number(s):
- BNL--18725
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heat/mass flow enhancement design for a metal hydride assembly. Phase II. Final report
Some rate and modeling studies on the use of iron--titanium hydride as an energy storage medium for electric utility companies