During the last year, a Vanadium Redox Flow Battery (VRFB) experiment has been designed, manufactured and commissioned at University of Padua. Compared to usual VRFB test facilities used in many laboratories around the world, this is a large size device rated 4 kW in power and 24 kWh in energy. The battery consists of a stack of 40 cells, each with an active cross-sectional area of 30 cm x 20 cm with a flow-through fluid distribution design with 5 mm thick uncompressed carbon felt. The positive and negative tanks store 550 liters each of 1.6 M vanadium ions in a 4.5 M sulfuric acid solution. The solution mass flows in the stack are controlled by two magnetically driven centrifugal pumps power by three-phase motors which are driven by 0-60 Hz inverters.
The VRFB Industrial-Scale Experiment at University of Padua
Massimo Guarnieri;Andrea Trovò;MARINI, GIACOMO;SUTTO, ALESSANDRO;Piergiorgio Alotto
2018
Abstract
During the last year, a Vanadium Redox Flow Battery (VRFB) experiment has been designed, manufactured and commissioned at University of Padua. Compared to usual VRFB test facilities used in many laboratories around the world, this is a large size device rated 4 kW in power and 24 kWh in energy. The battery consists of a stack of 40 cells, each with an active cross-sectional area of 30 cm x 20 cm with a flow-through fluid distribution design with 5 mm thick uncompressed carbon felt. The positive and negative tanks store 550 liters each of 1.6 M vanadium ions in a 4.5 M sulfuric acid solution. The solution mass flows in the stack are controlled by two magnetically driven centrifugal pumps power by three-phase motors which are driven by 0-60 Hz inverters.
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