EU

WP5 OFFSHORE HYDROGEN GENERATION
(RTD)

PROJECT DELIVERABLES AND DISSEMINATION

D5.1 Report on expected marinised hydrogen generator performancemore info

NATURE: REPORT

DISSEMINATION: PUBLIC

SCHEDULED: DEC/2014

ACHIEVED: DEC/2014

The report outlines the results from an evaluation of electrolysis technologies for the expected application on the H2Ocean offshore energy harvesting facility in terms of sensitivity to inlet water, power variations and motion. The results of the project work changed the initial strategy of having an un‐manned facility, so the power converting vessel will now require regular supervision. Among alternative electrolysis technologies, high temperature solid oxide electrolysis is still too far from the market, whereas high temperature & high pressure alkaline electrolysis are relevant, but more expensive. High pressure PEM‐electrolysis is the more likely candidate for future large‐scale implementation of electrolysis in the energy sector. Other experimental work has been done on similar aspects for the Ni‐electrode, typically used in alkaline electrolysis, which confirmed the known and experienced robustness of this electrode material. Finally, a technology assessment was made for a so‐called 2nd generation high‐temperature, high‐pressure alkaline electrolysis, which also showed a promising potential for reducing the space requirements by an order of magnitude without need for using scarce raw materials.

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Version: vfinal - Pages: 157

D5.2 Report on desalination unit performancemore info

NATURE: REPORT

DISSEMINATION: CONFIDENTIAL

SCHEDULED: DEC/2014

ACHIEVED: NOV/2014

A desalination system has been developed in Task 5.4 based on Reverse Osmosis Membranes to carry out ship-based desalination, in order to produce demineralized water for the electrolyzers, and drinkable water for human consumption. This document first presents, in Section 2, the general design of the marinized desalination system, taking into account the need to operate in a marine environment under variable water demand and power supply. Since an important point of the proposal is the optimization of energy use, two novel subsystems are described in detail: Section 3 discusses the developed nanomembranes to obtain low fouling membranes, while Section 4 presents the evaluation of an osmotic energy recovery system developed within the project. The designed Multi-stage Reverse-Osmosis systems would effectively produce the required drinkable water and the demineralised water for the platform electrolysers. The design is based on the use of off-the-shelf components, although two subsystems are novel, as they are central for the performance of the system: low fouling nanomembranes and an osmotic energy recovery system.

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Version: RESTRICTED - Pages: RESTRICTED

D5.3 Report on advanced control system performancemore info

NATURE: REPORT

DISSEMINATION: CONFIDENTIAL

SCHEDULED: DEC/2014

ACHIEVED: NOV/2014

A control strategy for the Reverse Osmosis unit has been developed to adapt the energy consumption of the desalination unit to the energy reserved for this unit by the Energy Management System. In order to do this, the different components of the desalination plant will be re-started and shut down when needed, depending on the energy availability. A solution to the operation of the H2Ocean desalination unit, under the expected variable power supply, has been presented and evaluated. Using Smart Grid ideas, a heuristic control strategy has been proposed based on giving preference, at each sample time, to the connection of those components of the desalination plant that require urgent action to avoid not fulfilling the water demand; the buffer tanks enable variations in production to be dampened as long as they have enough water stored, so a central aspect of the control system is the use of the information of the measured tank levels. The proposed controller was evaluated on the H2Ocean unit. Simulation results based on the H2Ocean unit’s characteristics are provided to show the correct operation of the plant with the developed controller.

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Version: RESTRICTED - Pages: RESTRICTED

WP5 Disseminationmore info

ARTICLE

Full Article, “Evaluation of the potential of osmotic energy as renewable energy source in realistic
conditions”, doi:10.1016/j.egypro.2013.11.026

ARTICLE

Full Article, “Offshore Desalination Using Wave Energy: A. Serna, F. Tadeo (2013)”,
"Advances in Mechanical Engineering (5, 1-8)", doi.org/10.1155/2013/539857

ARTICLE

Full Article, “Offshore Hydrogen Production from Wave Energy: A. Serna, F. Tadeo (2014)”,
"International Journal of Hydrogen Energy, 39(3), 1549-1557", doi:10.1016/j.ijhydene.2013.04.113

ARTICLE

Abstract, “Energy recovery using salinity differences in a multi-effect distillation system”,
doi.org/10.1080/19443994.2014.940648

ARTICLE

Full Article, “Evaluation of Wave energy for Near-The-Coast Offshore Desalination Plant”

ARTICLE

Full Article, “Modelling of an offshore hydrogen production from wave energy”

ARTICLE

In Preparation, “Influence from sea water constituents on the efficiency of water electrolysis by PEM-cells”

ARTICLE

Full Article, "Effect of the feed and draw solution temperatures on PRO performance.
Theoretical and experimental study: Khaled Touati, Christoper Häne, Fernando Tadeo, Thomas Schiestel (2015)",
Desalination 365, 182–195,doi:10.1016/j.desal.2015.02.016

ARTICLE

Full Article, “Effect of the operating temperature on hydrodynamics and membrane parameters
in pressure retarded osmosis”, K. Touati, F. Tadeo, C. Hänel, Th. Schiestel (2015), Desalination and Water Treatment 2015,
DOI: 10.1080/19443994.2015.1039600

ARTICLE

Full Article, “Producción de hidrógeno por energías renovables en una plataforma híbrida en alta mar”,
A. Serna, J.E. Normey-Rico, F. Tadeo (2015). In 36 Jornadas de Automática, 2015 September 24-26 Bilbao, Spain. (pp. 1-8)

ARTICLE

Full Article, “Heuristic control of multi-stage desalination plants under variable available power.”,
A. Serna, F. Tadeo, D. Torrijos (2014). In IEEE 15th International Conference onSciences and
Techniques of Automatic Control and Computer Engineering (STA), 21-23 December 2014, Monastir, Tunisia. (pp. 853-858).

POSTER

“Influence from sea water constituents on the efficiency of water electrolysis by PEM-cells” Event: EmHyTeC2014
Conference

POSTER

“ The Influence of Process Parameters on the Performance of Pro Membranes”, ICOM – International Congress on
Membranes and Membrane Processes, Suzhou, China from 20 - 25 July 2014.

WEB

Technical Session