Modular Concept of a Cost-Effective and Efficient On-Site Hydrogen Production Solution

Paper #:
  • 2017-01-1287

Published:
  • 2017-03-28
Abstract:
As the availability of hydrogen filling stations is highly limited, cost effective and flexible solutions for decentralized hydrogen production are needed. Therefore a modular, scalable and highly efficient hydrogen supply infrastructure for industrial, automotive and mobile applications is developed and presented in this paper. The modular system design consists of a 35 MPa electrolysis system, an optional 70 MPa single stage compressor for automotive applications, storage and dispenser modules as well as the required peripheral components. The number of electrolysis modules can be varied application-oriented and therefore customer-specific solutions can be realized. The flexible concept can be adapted to the actual hydrogen demand and is optimized for any application regarding capacity utilization and cost effectiveness. The modular container design provides the opportunity to expand the facility retrospectively or even to relocate the whole infrastructure with minor reconstruction efforts. A newly developed high pressure electrolysis module with following advantages is implemented: high efficiencies over 70 %, dynamic operational behavior, good partial load behavior and highest hydrogen quality. Since most logistic applications use 35 MPa hydrogen systems, no additional compressor is necessary when using this electrolysis module. The developed concept is realized at Fronius International GmbH in Thalheim bei Wels, Austria. The infrastructure is designed for the refueling of hydrogen vehicles utilized in logistic and research applications. To reach short refueling durations and the required pressure level, a cascaded filling process using two gas storage modules is implemented. The main benefits of this unique hydrogen supply infrastructure are: high availability, energy efficiency and low maintenance effort.
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