Open Access Open Access  Restricted Access Subscription or Fee Access

Development of dynamic model for alkaline water electrolyser: Application to disturbance analysis

Rupsha Bhattacharyya

Abstract


A dynamic model of an alkaline water electrolyser plant has been developed to study its time dependent behaviour when it is subjected to dynamically varying inputs like changing electrolyte flow, inlet temperature, pressure, current, voltage. Such dynamic conditions are expected to arise during start up and shut down and also when the electrolyser is coupled to a nuclear or renewable electricity source, both of which exhibit time dependent power output under various conditions. The electrolyser stack is represented through a lumped capacitance model and the outlet gas and electrolyte flow and temperature are predicted for given dynamic inputs which have well defined mathematical forms. An in-house code is developed and implemented for numerical integration of the governing equations describing the dynamic behaviour of the electrolyser. The model can also account for the variation of than one variable simultaneously, which is generally an anticipated occurrence during actual plant operation.

Full Text:

PDF

References


Chang J, et. al., A study of a nuclear hydrogen production demonstration plant, Nuclear Engineering and Technology, 39(2):111-122, 2007.

Turner J, et. al., Renewable hydrogen production, International Journal of Energy Research, 32(5):379-407, 2008.

Balta MT, Kizilkan O, Yilmaz F, Energy and exergy analyses of integrated hydrogen production system using high temperature steam electrolysis, International Journal of Hydrogen Energy, 41(19):8032-8041, 2016.

Ni M, Leung MKH, Leung DYC, Energy and exergy analysis of hydrogen production by solid oxide steam electrolyzer plant, International Journal of Hydrogen Energy, 32(18):4648-4660, 2007.

Ni M, Leung MKH, Leung DYC, Energy and exergy analysis of hydrogen production by a proton exchange membrane (PEM) electrolyzer plant, Energy Conversion and Management, 49:2748-2756, 2008.

Moshkbar-Bakhshayesh K, Ghofrani MB, Transient identification in nuclear power plants: A review, Progress in Nuclear Energy, 67:23-32, 2013.

Loberra DT, Valkealahti S, Dynamic thermal model of solar PV systems under varying climatic conditions, Solar Energy, 93:183-194, 2013.

Bhattacharyya R, Misra A, KC Sandeep, Photovoltaic solar energy conversion for hydrogen production by alkaline water electrolysis: Conceptual design and analysis, Energy Conversion and Management, 133:1-13, 2017.

Nayar MG, Raghunathan P, Mitra SK, Development and operation of a high current density high pressure advanced electrolysis cell, International Journal of Hydrogen Energy, 5(8):65-74, 1980.

Sandeep KC, et. al., Experimental studies and modeling of advanced alkaline water electrolyser with porous nickel electrodes for hydrogen production, International Journal of Hydrogen Energy, 42:12094-12103, 2017.

Specific Heat for Metals, available at https://www.engineeringtoolbox.com/specific-heat-metals-d_152.html (last accessed on 24.4.2019).

Occidental Chemical Corporation, Caustic Potash Handbook, available at https://www.oxy.com/OurBusinesses/Chemicals/Products/Documents/CausticPotash/KOH-Handbook-2018-ed.pdf (last accessed on 24.4.2019).

Hydrogen-Specific Heat, available at https://www.engineeringtoolbox.com/hydrogen-d_976.html (last accessed on 24.4.2019).

Oxygen Gas-Specific Heat, available at https://www.engineeringtoolbox.com/oxygen-d_978.html (last accessed on 24.4.2019).

Incropera FP, DeWitt DP, Bergmann TL, Lavine AS, Fundamentals of heat and mass transfer, 6th ed. New Jersey: John Wiley and Sons, Inc., 2007.

Ogumerem GS, Pistikopoulos EN, Dynamic Modeling and Explicit Control of a PEM Water Electrolysis Process, Smart and Sustainable Manufacturing Systems, 2(2):25-43, 2018.

Hourng LW, Tsai TT, Lin MY, The analysis of energy efficiency in water electrolysis under high temperature and high pressure, IOP Conf. Series: Earth and Environmental Science, 93:012035, 2017.

Onda K, Kyakuno T, Hattori K, Ito K, Prediction of production power for high-pressure hydrogen by high-pressure water electrolysis, Journal of Power Sources, 132:64-70, 2004.

Conte SD, de Boor C, Elementary Numerical Analysis-An Algorithmic Approach, 3rd ed., McGraw Hill Book Company, New York (USA),1980.


Refbacks

  • There are currently no refbacks.