Modelling Production of Renewable Energy from Water Splitting High Thermal Electrolysis Processes


  •   Osaretin N.I. Ebuehi

  •   Kingsley Abhulimen

  •   Daniel O. Adebesin


Recently, fuel gas from water has become the center of attention because it is a renewable source of energy and eco-friendly. In this study, the hydrogen gas simulated was obtained from the high-temperature water splitting electrolysis model, because it is more efficient than the low-temperature water splitting electrolysis process. It also releases oxygen as a byproduct. The high-temperature electrolysis model is made up of three loops: primary high-temperature helium loop, secondary helium loop, and high-temperature electrolysis loop. Hydrogen gave a temperature of 27.20C, a pressure of 49.5 bars, and a molar flow of 84.02MMSCFD. The hydrogen gas from a high-temperature electrolysis model is simulated with a CO2 gas stream to produce methane and water, also releasing unreacted carbon dioxide and hydrogen. Key parameters such as molar entropy, molar enthalpy, heat flow, and cost flow were evaluated by Aspen HYSYS V8.8. The simulation model used for this work is the Sabatier Process Model. In this model, Continuous stirred tank, Converter, Equilibrium, Gibbs, Plug flow reactors were used to generate methane. The Converter reactor gave the highest yield of methane gas with a mole fraction of 0.2390. Key benchmarks, including temperature, heat flow, cost flow, cost factor were varied to see how they can affect methane gas and other products.

Keywords: Electrolysis, environment, fuel gas, hydrogen, renewable energy, simulation model, temperature


O. Ellabban, H. Abu-Rub, and F. Blaabjerg, "Renewable energy resources: Current status, future prospects, and their enabling technology," Renew. Sustain. Energy Rev., vol. 39, pp. 748–764, 2014, DOI: 10.1016/j.rser.2014.07.113.

Al-Mohamad, “Efficiency improvements of photo-voltaic panels using a Sun-tracking system,” Appl. Energy, vol. 79, no. 3, pp. 345–354, 2004, DOI: 10.1016/j.apenergy.2003.12.004.

N. Armaroli and V. Balzani, “Towards an electricity-powered world,” Energy Environ. Sci., vol. 4, no. 9, pp. 3193–3222, 2011, DOI: 10.1039/c1ee01249e.

M. M. Adeli, F. Sobhnamayan, S. Farahat, M. A. Alavi, and F. Sarhaddi, “Experimental performance evaluation of a photovoltaic thermal (PV/T) air collector and its optimization,” Stroj. Vestnik/Journal Mech. Eng., vol. 58, no. 5, pp. 309–318, 2012, DOI: 10.5545/sv-jme.2010.007.

H. T. Nguyen and J. M. Pearce, “Incorporating shading losses in solar photovoltaic potential assessment at the municipal scale,” Sol. Energy, vol. 86, no. 5m, pp. 1245–1260, 2012, DOI: 10.1016/j.solener.2012.01.017.

M. Bazilian et al., “Re-considering the economics of photovoltaic power," Renew. Energy, vol. 53, pp. 329–338, 2013, DOI: 10.1016/j.renene.2012.11.029.

S. Bhattarai, J. H. Oh, S. H. Euh, G. Krishna Kafle, and D. Hyun Kim, “Simulation and model validation of sheet and tube type photovoltaic thermal solar system and conventional solar collecting system in transient states,” Sol. Energy Mater. Sol. Cells, vol. 103, pp. 184–193, 2012, DOI: 10.1016/j.solmat.2012.04.017.

P. G. Charalambous, S. A. Kalogirou, G. G. Maidment, and K. Yiakoumetti, “Optimization of the photovoltaic thermal (PV/T) collector absorber,” Sol. Energy, vol. 85, no. 5, pp. 871–880, 2011, DOI: 10.1016/j.solener.2011.02.003.

A. Kudo and Y. Miseki, “Heterogeneous photocatalyst materials for water splitting,” Chem. Soc. Rev., vol. 38, no. 1, pp. 253–278, 2009, DOI: 10.1039/b800489g.

W. He, Y. Zhang, and J. Ji, "Comparative experimental study on a photovoltaic and thermal solar system under the natural circulation of water," Appl. Therm. Eng., vol. 31, no. 16, pp. 3369–3376, 2011, DOI: 10.1016/j.applthermaleng.2011.06.021.

S. S. Joshi, A. S. Dhoble, and P. R. Jiwanapurkar, "Investigations of Different Liquid-Based Spectrum Beam Splitters for Combined Solar Photovoltaic Thermal Systems," J. Sol. Energy Eng. Trans. ASME, vol. 138, no. 2, pp. 1–7, 2016, DOI: 10.1115/1.4032352.

P. Dupeyrat, C. Ménézo, M. Rommel, and H. M. Henning, "Efficient single glazed flat plate photovoltaic-thermal hybrid collector for the domestic hot water system," Sol. Energy, vol. 85, no. 7, pp. 1457–1468, 2011, DOI: 10.1016/j.solener.2011.04.002.

E. Skoplaki and J. A. Palyvos, “On the temperature dependence of photovoltaic module electrical performance: A review of efficiency/power correlations,” Sol. Energy, vol. 83, no. 5, pp. 614–624, 2009, DOI: 10.1016/j.solener.2008.10.008.

J. K. Tonui and Y. Tripanagnostopoulos, "Air-cooled PV/T solar collectors with low-cost performance improvements," Sol. Energy, vol. 81, no. 4, pp. 498–511, 2007, DOI: 10.1016/j.solener.2006.08.002.

A. Terada et al., “Water sampling using a drone at Yugama crater lake, Kusatsu-Shirane volcano, Japan,” Earth, Planets Sp., vol. 70, no. 1, pp. 1–9, 2018, DOI: 10.1186/s40623-018-0835-3.

R. Santbergen and R. J. C. Van Zolingen, “The absorption factor of crystalline silicon PV cells: A numerical and experimental study,” Sol. Energy Mater. Sol. Cells, vol. 92, no. 4, pp. 432–444, 2008, DOI: 10.1016/j.solmat.2007.10.005.

N. J. Wagner, M. Coertzen, R. H. Matjie, and J. C. Van Dyk, “Coal Gasification,” Appl. Coal Petrol., No. 1, pp. 119–144, 2008, DOI: 10.1016/B978-0-08-045051-3.00005-1.

S. Rönsch et al., “Review on methanation - From fundamentals to current projects,” Fuel, vol. 166, no. October, pp. 276–296, 2016, DOI: 10.1016/j.fuel.2015.10.111.

G. Voitic et al., Hydrogen production. Elsevier Inc., 2018.

H. Zhou et al., “Water splitting by electrolysis at high current densities under 1.6 volts,” Energy Environ. Sci., vol. 11, no. 10, pp. 2858–2864, 2018, DOI: 10.1039/c8ee00927a.


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How to Cite
Ebuehi, O.N., Abhulimen, K. and Adebesin, D.O. 2021. Modelling Production of Renewable Energy from Water Splitting High Thermal Electrolysis Processes. European Journal of Engineering and Technology Research. 6, 3 (Apr. 2021), 79–86. DOI: