Pumping power considerations in the designs of NASA-Redox flow cells

Technical Report · Mon Jun 01 00:00:00 EDT 1981

DOI:https://doi.org/10.2172/6467640· OSTI ID:6467640

Hoberecht, M. A.

The NASA-Redox Energy Storage system uses two fully soluble redox couples as anode and cathode fluids. Both fluids are pumped through a redox cell, or stack of cells, where the electrochemical reactions take place at porous carbon felt electrodes. Pressure drop losses are therefore associated with this system due to the continuous flow of reactant solutions. The exact pressure drop within a redox low cell is directly dependent on the flow rate as well as the various cell dimensions. Pumping power requirements for a specific set of cell operating conditions can be found for various cell geometries once the flow rate and pressure drop have been determined. Since these pumping power requirements contribute to the overall system parasitic energy losses which must be minimized, the choice of cell geometry becomes critical. Pressure drop data for six different cell geometries of various flow port, manifold, and cavity dimensions are presented and discussed.

• Research Organization: NASA Lewis Research Center, Cleveland, OH (United States)
• DOE Contract Number: AI04-80AL12726
• OSTI ID: 6467640
• Report Number(s): DOE/NASA/12726-7; NASA-TM-82598; ON: DE81028789
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
25 ENERGY STORAGE
ENERGY STORAGE SYSTEMS
REDOX FUEL CELLS
DESIGN
CHROMIUM CHLORIDES
ENERGY LOSSES
FLOW RATE
FLUIDS
IRON CHLORIDES
PRESSURE DROP
PUMPING
REDOX REACTIONS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM COMPOUNDS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ENERGY SYSTEMS
FUEL CELLS
HALIDES
HALOGEN COMPOUNDS
IRON COMPOUNDS
LOSSES
REGENERATIVE FUEL CELLS
TRANSITION ELEMENT COMPOUNDS
300503* - Fuel Cells- Materials
Components
& Auxiliaries
250800 - Energy Storage- Chemical