Publications

Published articles 

1. Takele Ferede AGAJIE, Armand FOPAH LELE, Isaac AMOUSSOU, Ahmed ALI, Baseem KHAN, Om Prakash MAHELA, Nuvvula S. S. RAMAKRISHNA, Divine Khan NGWASHI, Emmanuel Soriano FLORES, Emmanuel TANYI, Techno-Economic Analysis and Optimization of Hybrid Renewable Energy with Energy Storage System in Two Operational Modes, Sustainability, ISSN: 2071-1050. Vol. 15, Issue 15, Article number 11735, IMPACT FACTOR: 3.889, 2023

2. Takele Ferede AGAJIE, Armand FOPAH LELE, Ahmed ALI, Isaac AMOUSSOU, Baseem KHAN, Mahmoud ELSISI, Winkar Basil NSANYUY, Om Prakash MAHELA, Roberto Marcelo ALVAREZ, Emmanuel TANYI, Integration of Superconducting Magnetic Energy Storage for Fast-Response Storage in a Hybrid Solar PV-Biogas with Pumped-Hydro Energy Storage Power Plant, Sustainability, ISSN: 2071-1050, Vol. 15, Issue 13, Article number 10736, IMPACT FACTOR: 3.889, 2023

3. Takele Ferede AGAJIE, Armand FOPAH LELE, Isaac AMOUSSOU, Ahmed ALI, Baseem KHAN, Emmanuel TANYI, Optimal Design and Mathematical Modeling of Hybrid Solar PV–Biogas Generator with Energy Storage Power Generation System in Multi-Objective Function Cases, Sustainability, ISSN: 2071-1050, Vol. 15, Issue 10, Article number 8264, IMPACT FACTOR: 3.889, 2023

4. Takele Ferede AGAJIE, Armand FOPAH LELE, Ahmed ALI, Isaac AMOUSSOU, Baseem KHAN, Mahmoud ELSISI, Om Prakash MAHELA, Roberto Marcelo ALVAREZ, Emmanuel TANYI, Optimal Sizing and Power System Control of Hybrid Solar PV-Biogas Generator with Energy Storage System Power Plant, Sustainability, ISSN: 2071-1050, Vol. 15, Issue 7, Article number 5739 IMPACT FACTOR: 3.889, 2023

5. Banyuy Godwin FONYUY, Jean Gaston TAMBA, Joseph ZOBO MFOMO, Armand FOPAH LELE, Benjamin Salomon DIBOMA, Dominique Martial MANGA BENGONO, Evariste FONGNZOSSIÉ FEDOUNG, Achille Bernard BIWOLE, Moisture desorption isotherms and thermodynamic properties of two dense tropical woods: Tali (Erythrophleum suaveolens Brenan) and Bilinga (Nauclea diderrichii Merr), European Journal of Wood and Wood Products, ISSN: 0018-3768, Vol. 81, Issue 3, pp.733 – 745, IMPACT FACTOR: 3.8, 2023

6. Elisée Enselme TUEKAM BOPDA, Jean Gaston TAMBA, Armand FOPAH LELE, Impacts of mobile phone use while driving on the performance of petroleum product drivers in Cameroon, Transportation Safety and Environment | Oxford Academic, Vol. 5, Issue 2, tdac044, CiteScore: 2.5, 2023

7. Takele Ferede AGAJIE, Ahmed ALI, Armand FOPAH LELE, Isaac AMOUSSOU, Baseem KHAN, Carmen Lilí RODRÍGUEZ VELASCO, Emmanuel TANYI, A Comprehensive Review on Techno-Economic Analysis and Optimal Sizing of Hybrid Renewable Energy Sources with Energy Storage Systems, Energies, ISSN: 1996-1073, Vol. 16, Issue 2, pp.642, IMPACT FACTOR: 3.252, 2023

8. Sylvanus T. R. GBENOU, Kejian WANG, Armand FOPAH LELE. Corrigendum to “Kinetic analysis of poly-aluminum sulfate hydrate for low-temperature thermochemical heat storage” [Appl. Therm. Eng. 210 (2022) 118317]. Appl Therm Eng 2022; 217: 119293. https://doi.org/10.1016/j.applthermaleng.2022.119293.

9. Elisée Enselme TUEKAM BOPDA, Armand FOPAH LELE, Jean Gaston TAMBA, ‘Impacts of mobile phone use while driving on the performance of petroleum product drivers in Cameroon’, Transportation Safety and Environment | Oxford Academic, Accepted (TSE-2021-052.R3), 2022

10. Jean Gaston TAMBA, Flavian Emmanuel SAPNKEN, T.  Wilfried Emmanuel AZONG, Serge GUEFANO, Armand FOPAH LELE, Louis MONKAM, ‘An Overview of Electricity in Cameroon: Current Status, Influential Factors and Government Actions’, International Journal of Energy Economics and Policy, Vol. 12 (issue 4). ISSN: 2146-4553, [pp. 470-481], 2022

11. Armand FOPAH LELE, ‘Hydrogen technology in Sub-Saharan Africa: Prospects for Power Plants’, E3S Web of Conferences 354, 01001, eISSN 2267-1242, 8p, 2022

12. Christelle Flora MAJOH KUETCHE, David TSUANYO, Armand FOPAH LELE, ‘Analysis of Hybrid Energy Systems for Telecommunications Equipment: A Case Study in Buea Cameroon’, E3S Web of Conferences 354, 02007, eISSN 2267-1242, 7p, 2022

13. Clearence Fai YENKU, Marie-Danielle FENDJI, Armand FOPAH LELE, David TSUANYO, ‘Charge-Controller Optimization on Lead-Acid Battery in Solar PV Systems: Temperature Effects and Efficiency Improvement’, E3S Web of Conferences 354, 01003, eISSN 2267-1242, 6p, 2022

14. Dominique Martial MANGA BENGONO, Jean Gaston TAMBA, Joseph ZOBO MFOMO, Armand FOPAH LELE, Benjamin Salomon DIBOMA, Banyuy Godwin FONYUY, Achille Bernard BIWOLE, ‘Influence of the anatomical structure on the moisture sorption and thermodynamic properties of the African tropical woods’, Heat and Mass Transfer / Wärme- und Stoffübertragung Journal, https://doi.org/10.1007/s00231-022-03242-x. 2022

15. T. Roger Sylvanus GBENOU, Armand FOPAH LELE, Kejian WANG, ‘Macroscopic and Microscopic investigations of low-temperature thermochemical heat storage reactors: A review, Renewable & Sustainable Energy Reviews. Volume 161, NO. 112152, ISSN 1364-0321, 2022

16. Dominique Martial MANGA BENGONO, Jean Gaston TAMBA, Joseph ZOBO MFOMO, Evariste FONGNZOSSIÉ FEDOUNG, Armand FOPAH LELE, Banyuy Godwin FONYUY, Achille Bernard BIWOLE, ‘Sorption behaviour of three African tropical woods (Sapelli, Sipo, Kosipo) with similar anatomical structures from Cameroon’, International Wood Products Journal, Vol. 13, Issue 3, Pages 194-202, 2022

17. T. Roger Sylvanus GBENOU, Armand FOPAH LELE, Kejian WANG, ‘Recent Status and Prospects on Thermochemical heat storage processes and applications’, Entropy Journal, section Thermodynamics, Vol. 23 (8), 953, 2021

18. Armand FOPAH LELE, Amelie KABORE KERE, Jean Gaston TAMBA, Isdeen YAYA-NADJO, ‘Solar electricity storage through green hydrogen production: A case study’, International Journal of Energy Research, Volume45, Issue 9, [pp. 13007-13021], 2021

19. Armand FOPAH LELE, Amélie KABORE KERE, ‚Technologie de stockage d’énergie pour les infrastructures énergétiques en Afrique subsaharienne: l’hydrogène comme perspective’, Energies Durables en Afrique et Initiatives - Liaison Energie Francophonie, Numéro 108, ISSN 0840-7827, [pp. 68 à 70], 2018

20. Jean Gaston TAMBA, Jean Luc NSOUANDELE, Armand FOPAH LELE, ‘Gasoline consumption and economic growth: Evidence from Cameroon’, Energy Sources, Part B: Economics, Planning, and Policy, Vol. 12, NO. 8, [pp. 685 à 691], 2017

21. Jean Gaston TAMBA, Jean Luc NSOUANDELE, Armand FOPAH LELE, Flavian Emmanuel SAPNKEN, ‘Electricity consumption and economic growth: Evidence from Cameroon’, Energy Sources, Part B: Economics, Planning, and Policy, Vol. 12, NO. 11, [pp. 1007 à 1014], 2017

22. Armand FOPAH LELE, Jean Gaston TAMBA, ‘A review on the use of SrBr2·6H2O as a potential material for low temperature energy storage systems and building applications’, Solar Energy Materials & Solar Cells, Vol. 164 [pp. 175 à 187], 2017

23. Kathrin KORHAMMER, Mona-Maria DRUSKE, Armand FOPAH LELE, Holger Urs RAMMELBERG, Nina WEGSCHEIDER, Oliver OPEL, Thomas OSTERLAND, Wolfgang RUCK, ‘Sorption and thermal characterization of composite materials based on chlorides for thermal energy storage’, Applied Energy, Vol. 162 [pp. 1462 à 1472], 2016

24. Armand FOPAH LELE, Christian ROHDE, KARSTEN Neumann, Theo TIETJEN, Thomas RÖNNEBECK, Kokouvi Edem N'TSOUKPOE, Thomas OSTERLAND, Oliver OPEL, Wolfgang K.L. RUCK, ‘Lab-scale experiment of a closed thermochemical heat storage system including honeycomb heat exchanger’, Energy, Vol. 114 [pp. 225 à 238], 2016

25. Armand FOPAH LELE, Frédéric KUZNIK, Thomas OSTERLAND, Wolfgang K.L. RUCK, ‘Thermal synthesis of a thermochemical heat storage with heat exchanger optimization’, Applied Thermal Engineering, Vol. 101, [pp. 669 à 677], 2016

26. Kokouvi Edem N'TSOUKPOE, Holger Urs RAMMELBERG, Armand FOPAH LELE, Kathrin KORHAMMER, Beatriz Amanda WATTS, Thomas SCHMIDT, Wolfgang K.L. RUCK, A review on the use of calcium chloride in applied thermal engineering  Applied Thermal Engineering, Vol. 75 [pp. 513 à 531]  Engineering Index. IMPACT FACTOR : 5,259, 2015

27. Armand FOPAH LELE, Frédéric KUZNIK, Holger Urs RAMMELBERG, Thomas SCHMIDT, Wolfgang K.L. RUCK, ‘Thermal decomposition kinetic of salt hydrates for heat storage systems’, Applied Energy, Vol. 154 [pp. 447 à 458], 2015

28. Armand FOPAH LELE, Kokouvi Edem N'TSOUKPOE, Thomas OSTERLAND, Frédéric KUZNIK, Wolfgang K.L. RUCK, ‘Thermal conductivity measurement of thermochemical storage materials’, Applied Thermal Engineering, Vol. 89 [pp. 916 à 926], 2015

29. Armand FOPAH LELE, Frédéric KUZNIK, Oliver OPEL, Wolfgang K.L. RUCK, ‘Performance analysis of a thermochemical based heat storage as an addition to cogeneration systems’, Energy Conversion and Management, Vol. 106 [pp. 1327 à 1344], 2015

30. Armand FOPAH LELE, Thomas RÖNNEBECK, Christian ROHDE, Thomas SCHMIDT, Frédéric KUZNIK, Wolfgang RUCK, ‘Modelling of heat exchangers based on thermochemical material for solar heat storage systems’, Energy Procedia, Vol. 61, [pp. 2809 à 2813], 2014

31. Mona-Maria DRUSKE, Armand FOPAH LELE, Kathrin KORHAMMER, Holger Urs RAMMELBERG, Nina WEGSCHEIDER, Wolfgang RUCK, Thomas SCHMIDT, ‘Developed materials for thermal energy storage: synthesis and characterization’, Energy Procedia, Vol. 61, [pp. 96 à 99], 2014

32. Armand FOPAH LELE, Frédéric KUZNIK, Holger Urs RAMMELBERG, Thomas SCHMIDT, Wolfgang K.L. RUCK, ‘Modelling approach of thermal decomposition of salt-hydrates for heat storage systems’, ASME 2013 Heat Transfer Summer Conf. Collocated with the ASMER 2013 7th Int. Conf. on Energy Sustainability and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, V001T01A010, ISBN: 978-079185547-8, HT2013, Vol. 1, 2013

Edited communications

1. David TSUANYO, P. ELE-ABIAMA, Daniel EGBE, Emmanuel TANYI, Armand FOPAH-LELE, and Daniel YAMEGUEU, 2022 – Conference Proceedings. Edited in EDP-Sciences from: International Energy2021-Conference on “Renewable Energy and Digital Technologies for the Development of Africa” (1st Edition, Yaoundé- Cameroon, 18 – 20 November 2021). eISSN 2267-1242  < https://www.e3s-conferences.org/articles/e3sconf/abs/2022/21/contents/>

2. Armand FOPAH LELE, Thierry MARE, 2018 - Actes de colloque - L'accès durable aux services énergétiques au Sud, In : Colloque International Francophone en Energétique et Mécanique (4ème Edition, Cotonou Bénin, 23 – 25 Avril 2018), CIFEM – Rennes – Université de Rennes – 235 Pages – ISBN 978-2-912095-05-3  <hal-01882293>  

Conference Proceedings

1. Aminatou AOUDOU, Elisée Enselme TUEKAM BOPDA, A Fopah-Lele, Jean Gaston TAMBA, 2022 - Analyse de la Consommation Énergétique du Transport Routier des Produits Pétroliers dans Ville de Ngaoundéré, In : Colloque International des Transports et Logistique Appliquée (1ème Edition, Nkolandom – Cameroon, 03 – 05 Mai 2022), CITLA 2022, Page xx

2. Elisée Enselme TUEKAM BOPDA, Jean Gaston TAMBA, A Fopah-Lele, 2022 - Impacts de l’utilisation du téléphone portable au volant sur les performances de conducteurs des produits pétroliers au Cameroun, In : Colloque International des Transports et Logistique Appliquée (1ème Edition, Nkolandom – Cameroon, 03 – 05 Mai 2022), CITLA 2022, Page xx

3. A Fopah-Lele, 2021, Keynote: - Hydrogen technology and economy in Sub-Saharan Africa: Prospects for Power Plants, In : International Energy Conference on Renewable Energy and Digital Technologies for the Development of Africa 2021 (1ème Edition, Yaoundé – Cameroon, 18 – 20 November 2021), EnerConf2021 – CNDT-MINRESI, Page xx

4. A Fopah-Lele, Athanase ASSONGBA, Amelie KABORE KERE, Isdeen YAYA-NADJO (2018) - Solar and Wind energy storage through hydrogen production in Benin, In : Colloque International sur le Nexus Eau-Energie-Alimentation-Habitat (1ème Edition, Ouagadougou – Burkina Faso, 12 – 14 Décembre 2018), SustainEng2018 – Institut 2iE, Page 67 

5. A. Fopah-Lele, Amelie KABORE KERE, Isdeen YAYA-NADJO, Gédéon DAHOU (2018) - Technologie hydrogène en Afrique sub-Saharienne: perspectives pour l’électricité, In : Colloque International Francophone en Energétique et Mécanique (4ème Ed. Cotonou, 23 – 25 Avril 2018), Université de Rennes, ISBN 978-2-912095-05-3 – Page 11 à 15 

6. A. Fopah Lele, J. Hu, F. Kuznik, T. Osterland, W.K.L. Ruck, (2015) “Numerical investigations of a thermochemical heat storage system during the discharging” ASME-ATI-UIT 2015 Conference on Thermal Energy Systems: Production, Storage, Utilisation and the Environment, May 17 – 20, 2015, Napoli, Italy. ISBN 978-88-98273-17-1.

7.  A. Fopah Lele, K. Korhammer, H.U. Rammelberg, N. Wegscheider, T. Schmidt, W. Ruck, (2013) “Thermal conductivity measurement of salt hydrates as porous material using calorimetric (DSC) method”, 8th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics (ExHFT) June 16 – 20, 2013, Lisbon, Portugal. Editeur: A. Faria - Edicao Electronica Lda. ISBN 978-972-8620-23-3.

8.  A. Fopah Lele, F. Kuznik, U. Rammelberg, T. Schmidt, W.K.L. Ruck, (2013) “Modelling approach of thermal decomposition of salt-hydrates for heat storage systems”, ASME-HT (Heat Transfer Conference) 2013, July 14 – 19, 2013, Minneapolis, USA. DOI: 10.1115/HT2013-17022.

9.  A. Fopah Lele, T. Rönnebeck, C. Rohde, K.E. N’Tsoukpoe, T. Schmidt, W.K.L. Ruck, (2012) Process engineering of a new thermochemical heat storage system, in: 7th International Renewable Energy Storage Conference and Exhibition, Eurosolar, Berlin-Germany: on CD–ROM at page 1872.

10.  T. Schmidt, H.U. Rammelberg, T. Rönnebeck, K.E. N’Tsoukpoe, A. Fopah Lele, K. Belz, et al., (2012) Conception of a heat storage system for household applications, in: 7th International Renewable Energy Storage Conference and Exhibition, Eurosolar, Berlin-Germany: on CD–ROM at page 429–433.

Non-published conference proceedings

1. T. Rönnebeck, A. Fopah Lele, C. Rohde, T. Osterland, W.K.L. Ruck, (2014) “Optimierung von Wärme- und Stofftransportvorgängen thermochemischer Speicher (Heat and mass transport optimization of a thermochemical heat storage system)” ProcessNet-Jahrestagung “Energieverfahrenstechnik (Energy Process Engineering)”, February 17-19, 2014, Kalrsruhe, Germany.

2.  A. Fopah Lele, T. Schmidt, W.K.L. Ruck, (2012) “Enhancement of exhaust gas heat transfer in Manifold using thermochemical material”, ASME Conference on Heat Transfer and Fluids Engineering summer meeting, July 8-12, 2012, Puerto Rico, USA. Photogallery poster presentation.

Conferences, seminars, and workshops

• SustainEng2018 - Colloque International sur le Nexus Eau-Energie-Alimentation-Habitat (1ème Edition, Ouagadougou – Burkina Faso, 12 – 14 Décembre 2018), Institut 2iE

• CIFEM 2018 Colloque International Francophone en Energétique et en Mécanique, April 23 – 25, 2018, Cotonou, Benin.

• IEA-EETW 2017 Energy Efficiency Expert in Emerging Countries, the section on Buildings, June 12 – 16, 2017, Paris, France.

• IEA-SHC/ECES 2016 (International Energy Agency – Solar Heating and Cooling/ Energy Conservation through Energy Storage Programme), Experts meeting on task 42 to redefine and restructure the future of task 42/49 to the new task 58, April 05 – 08, 2016, Graz, Austria.

• ASME-ATI-UIT 2015 Conference on Thermal Energy Systems: Production, Storage, Utilization and the Environment, May 17 – 20, 2015, Napoli, Italy.

• ICAE 2014, 6th International Conference on Applied Energy, May 30 – June 02, 2014, Taipei, Taiwan.

• IEA-SHC/ECES 2014 (International Energy Agency – Solar Heating and Cooling/ Energy Conservation through Energy Storage Programme), Task 42/Annex 29: Experts meeting, April 28 – 30, 2014, INSA-Lyon, Villeurbanne, France.

• ProcessNet-Jahrestagung “Energieverfahrenstechnik (Energy Process Engineering)”, February 17-19, 2014, Kalrsruhe, Germany.

• ExHFT 2013 - 8th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics (ExHFT) June 16 – 20, 2013, Lisbon, Portugal.

• Summer school “Calorimetry and thermal methods in materials science”, June 23rd – 28th, 2013, Lyon - France.

• ASME-HT 2013 (Heat Transfer Conference) 2013, July 14 – 19, 2013, Minneapolis, USA

• 7th IRES 2012 (International Conference on Renewable Energy Storage), November 12 – 14, 2012, Berlin, Germany.

• ASME 2012 conference on Heat Transfer and Fluids Engineering, July 8-12, 2012, Puerto Rico, USA.