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Title: Improvement and scale-up of the NASA Redox Storage System

Abstract

As larger cells and stacks are developed and tested, the NASA Redox Energy Storage System continues to show the technical performance required and cost-effectiveness for use with stand-alone photovoltaic and wind turbine installations and electric utility load-leveling. Over the past year, the anion exchange membranes and chromium electrodes have been further improved. Parametric flow studies show that pumping power requirements and shunt current losses in complete systems will be acceptable. More refined cost estimates confirm earlier predictions that system costs should be attractively low. A preprototype 1.0 kW Redox system (2 kW peak) with 11 kWh storage apacity has been built and integrated with the NASA/DOE photovoltaic test facility at NASA Lewis. This full function Redox system includes four substacks of 39 cells each (1/3 ft/sup 2/ active area) which are connected hydraulically in parallel and electrically in series. An open circuit voltage cell and a set of rebalance cells are used to continuously monitor the system state of charge and automatically maintain the anode and cathode reactants electrochemically in balance. Recent membrane and electrode advances are reviewed, and the results of multicell stack tests of 1 ft/sup 2/ hardware and the design of the 1 kW (2 kW peak)more » integrated system are briefly described.« less

Authors:
;
Publication Date:
Research Org.:
National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
OSTI Identifier:
7040777
Report Number(s):
DOE/NASA/12726-6; NASA-TM-81632; CONF-800806-40
DOE Contract Number:  
AI04-80AL12726
Resource Type:
Conference
Resource Relation:
Conference: 15. intersociety energy conversion engineering conference, Seattle, WA, USA, 18 Aug 1980
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 25 ENERGY STORAGE; OFF-PEAK ENERGY STORAGE; REDOX FUEL CELLS; PHOTOVOLTAIC POWER SUPPLIES; DESIGN; PERFORMANCE; WIND TURBINES; CHROMIUM IONS; ELECTROCATALYSTS; ENERGY STORAGE SYSTEMS; IRON IONS; MEMBRANES; PERFORMANCE TESTING; POWER RANGE 1-10 KW; REDOX REACTIONS; CATALYSTS; CHARGED PARTICLES; CHEMICAL REACTIONS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELECTRONIC EQUIPMENT; ENERGY STORAGE; EQUIPMENT; FUEL CELLS; IONS; MACHINERY; POWER SUPPLIES; REGENERATIVE FUEL CELLS; SOLAR EQUIPMENT; STORAGE; TESTING; TURBINES; TURBOMACHINERY; 300501* - Fuel Cells- Design & Development; 250800 - Energy Storage- Chemical

Citation Formats

Reid, M A, and Thaller, L H. Improvement and scale-up of the NASA Redox Storage System. United States: N. p., 1980. Web.
Reid, M A, & Thaller, L H. Improvement and scale-up of the NASA Redox Storage System. United States.
Reid, M A, and Thaller, L H. Tue . "Improvement and scale-up of the NASA Redox Storage System". United States.
@article{osti_7040777,
title = {Improvement and scale-up of the NASA Redox Storage System},
author = {Reid, M A and Thaller, L H},
abstractNote = {As larger cells and stacks are developed and tested, the NASA Redox Energy Storage System continues to show the technical performance required and cost-effectiveness for use with stand-alone photovoltaic and wind turbine installations and electric utility load-leveling. Over the past year, the anion exchange membranes and chromium electrodes have been further improved. Parametric flow studies show that pumping power requirements and shunt current losses in complete systems will be acceptable. More refined cost estimates confirm earlier predictions that system costs should be attractively low. A preprototype 1.0 kW Redox system (2 kW peak) with 11 kWh storage apacity has been built and integrated with the NASA/DOE photovoltaic test facility at NASA Lewis. This full function Redox system includes four substacks of 39 cells each (1/3 ft/sup 2/ active area) which are connected hydraulically in parallel and electrically in series. An open circuit voltage cell and a set of rebalance cells are used to continuously monitor the system state of charge and automatically maintain the anode and cathode reactants electrochemically in balance. Recent membrane and electrode advances are reviewed, and the results of multicell stack tests of 1 ft/sup 2/ hardware and the design of the 1 kW (2 kW peak) integrated system are briefly described.},
doi = {},
url = {https://www.osti.gov/biblio/7040777}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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