Ftwi Y Hagos

Ftwi Y Hagos

Dr, Assistant Professor

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Personal profile

Research interests

Biofuels

Emulsion fuels

Syngas

Energy storage

Energy Management

phase change material

Battery thermal management

Flare gas

Personal profile

Dr. Ftwi Yohaness Hagos is an academician and researcher currently working as a Assistant Professor in the Department of Mechanical and Industrial Engineering, College of Engineering in Sultan Qaboos University. Before he joined SQU, he has served as Senior Lecturer in the College of Engineering and Research Fellow at the Automotive Engineering Centre, Universiti Malaysia Pahang, Malaysia from 2014-2020. He received his PhD degree from Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Malaysia in January 2014. He received his Master of Engineering degree from Mechanical and Production Engineering Department, Delhi College of Engineering, Delhi University, India in 2005. He received his B. Sc. Degree (hon) from Mechanical Engineering Department, Faculty of Technology, Addis Ababa University, Ethiopia in 2001. He has served as a lecturer from 2005 to 2009 and later as Assistant Professor from 2009 to 2010 in the Mechanical Engineering Department, Mekelle University. During his service at Mekelle University, he has assumed different academic and administrative posts for the department and the university. He has published more than 60 articles in international scholarly journals and conferences. He has also supervised 2 PhD and 2 Master thesis (by research), 7 Master thesis (mixed mode), 1 Masters by coursework dissertation, 48 undergraduate final year projects and 4 final year diploma projects. His area of specializations is internal combustion engines, thermo-fluids, and energy. His research interests are in the field of internal combustion engines, combustion, modelling and simulation, optical diagnostics applied to combustion and flow, thermo-fluids, renewable energy, energy resource assessment and automotive engineering. He is CEng and Member of Institute of Mechanical Engineers (IMechE), UK. Besides, He is also a member of an editorial board for American Journal of Energy Engineering, International Journal of Renewable and Sustainable Energy and Journal of Energy and Natural Resources since 2014. From January 2015- October 2020, he has served Associate editor-in-chief for the Journal of Mechanical Engineering and Science (JMES).

Teaching

Bachelor of Mechanical Engineering, Sultan Qaboos University, 2020/2021 Spring Semester

Course: Thermodynamics I (MEIE3141) (1 sections (50)), Thermodynamics II (MEIE3142) (2 Sections (29))

 

Bachelor of Mechanical Engineering, Sultan Qaboos University, 2020/2021 Fall Semester

Course: Thermodynamics I (MEIE3141) (2 sections (56))

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2019/2020 Semester 2

Courses: Applied Thermodynamics (BMM2683) (1 section (40)), Thermodynamics (BMM 2673) (2 section (41)), Fluid Mechanics Laboratory (BMM3521) (28)

Course Coordinator Applied Thermodynamics (BMM2683) and Thermodynamics (BMM 2673)

 

Master of Mechanical Engineering (MME), Universiti Malaysia Pahang, 2019/2020 Semester 2

Courses: Efficient Energy Utilization (MME6123) (1)

 

PhD in Energy Technology, Mekelle University, 2019/2020, Semester 1

Course: Bioenergy: Technology and Systems (Eneg 8312) (2)

 

MSc in Energy Technology, Mekelle University 2019/2020, Semester 1

Course: Conventional Power Generation (MEng 6213), (17)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2019/2020 Semester 1

Courses: Applied Thermodynamics (BMM2683) (1 section (45)), Introduction to Automotive Engineering (BMA 2312) (19)

            Course Coordinator for Introduction to Automotive Engineering (BMA 2312)

 

Master of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2019/2020 Semester 1

Courses: Efficient Energy Utilization (MME6123) (12)

Course Coordinator for Courses: Efficient Energy Utilization (MME6123)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2018/2019 Semester 2

Courses: Applied Thermodynamics (BMM2683) (1 section (25)), Internal combustion engine (BMA 2523) (41)

Course Coordinator for Internal combustion engine (BMA 2523)

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2018/2019 Semester 1

Courses: Applied Thermodynamics (BMM2683) (1 section (23)), Introduction to Automotive Engineering (BMA 2312) (45)

            Course Coordinator for Introduction to Automotive Engineering (BMA 2312)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2017/2018 Semester 2

Courses: Applied Thermodynamics (BMM2683) (1 section (40)), Introduction to Automotive Engineering (BMA 2312) (20)

Master of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2017/2018 Semester 2

Courses: Efficient Energy Utilization (MME6123) (4)

 

Course Coordinator for Introduction to Automotive Engineering (BMA 2312)

Course Coordinator for Applied Thermodynamics (BMM2683)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2017/2018 Semester 1

Courses: Applied Thermodynamics (BMM2683) (32), Thermodynamics 2 (BMM 2523) (1), Introduction to Automotive Engineering (BMA 2312) (47)

 

Course Coordinator for Introduction to Automotive Engineering (BMA 2312)

 

Master of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2017/2018 Semester 1

Courses: Efficient Energy Utilization (MME6123) (6)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2016/2017 Semester 2

Courses: Applied Thermodynamics (BMM2683) (32), Thermodynamics 2 (BMM 2523) (3), Introduction to Automotive Engineering (BMA 2312) (33)

 

Course Coordinator for Introduction to Automotive Engineering (BMA 2312)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2016/2017 Semester 1

Courses: Applied Thermodynamics (BMM2683) (32), Thermodynamics 2 (BMM 2523) (1), Engineering Fluid Mechanics Laboratory (BMM3521) (26), Introduction to Automotive Engineering (BMA 2312) (31)

 

Course Coordinator for Engineering Fluid Mechanics Laboratory (BMM3521) and Introduction to Automotive Engineering (BMA 2312)

Courses: Efficient Energy Utilization (MME6123) (20)

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2015/2016 Semester 2

Courses: Fluid Mechanics 1 (BMM2533) (49), Engineering Fluid Mechanics Laboratory (BMM3521) (26), Introduction to Automotive Engineering (BMA 2312) (7)

 

Course Coordinator for Engineering Fluid Mechanics Laboratory (BMM3521) and Introduction to Automotive Engineering (BMA 2312)

Master of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2015/2016 Semester 1

Courses: Efficient Energy Utilization (MME6123) (21)

Course Coordinator for MME6123 Efficient Energy Utilization

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2015/2016 Semester 1

Courses: Fluid Mechanics 1 (BMM2533), Engineering Fluid Mechanics Laboratory (BMM3521), Introduction to Automotive Engineering (BMA 2312)

 

Course Coordinator for Engineering Fluid Mechanics Laboratory (BMM3521) and Introduction to Automotive Engineering (BMA 2312)

 

Master of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2014/2015 Semester 2

Courses: MME6123 Efficient Energy Utilization

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2014/2015 Semester 2

Courses: Thermodynamics 1(BMM2513), Thermodynamics (BMM2673), Fluid Mechanics 1 (BMM2533), Engineering Fluid Mechanics Laboratory (BMM3521), MME6123 Efficient Energy Utilization

 

Course Coordinator for Thermodynamics 1(BMM2513), Thermodynamics (BMM2673) and Engineering Fluid Mechanics Laboratory (BMM3521)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2014/2015 Semester 1

Courses: Fluid Mechanics 1(BMM2533), Engineering Fluid Mechanics Laboratory (BMM3521) (2 sections)

 

Course Coordinator for Engineering Fluid Mechanics Laboratory (BMM3521)

 

Bachelor of Mechanical Engineering (BMM), Universiti Malaysia Pahang, 2013/2014 Semester 1

Courses: Thermodynamics 1(BMM2513), Fluid Mechanics 1 (BMM2533), Engineering Fluid Mechanics Laboratory (BMM3521)

 

B.Sc. in Mechanical Engineering, Mekelle University (2005-2010)

Courses: Refrigeration and Air conditioning; IC engines and reciprocating machines; Energy resource and Power plant engineering; Heat and Mass Transfer; Fluid mechanics and advanced fluid dynamics; Fluid power systems, Engineering thermodynamics; Turbo machinery; Workshop and Metrology; Dynamics; Strength of Materials.

BSc. In Electronic and Electrical Engineering, Mekelle Institute of Technology (2005-2009)

            Mechanics

 

MSc. In Energy Technology, Mekelle University (2011-2012)

Course: Bioenergy

Publications

  1. Ismael, M. A., Aziz, A. R. A., Mohammed, S. E., Baharom, M. B., & Hagos, F. Y. (2021). Macroscopic and Microscopic spray structure of water-in-diesel emulsions. Energy, 120040. https://doi.org/10.1016/j.energy.2021.120040
  2. Alias, E. A., Hagos, F. Y., Ishak, M. I., Dzaharudin, F., Abdullah, A. A., & Asyraff, A. (2021). Performance and Emission Characteristics of Microbubble-Enhanced Fuels in a Diesel Engine. Energy & Fuels. https://doi.org/10.1021/acs.energyfuels.0c03204
  3. Hassan, H. A., Mamat, R., Hagos, F. Y., & Najafi, G. (2020). Experiment of Oxygenated Fuel on Diesel Engine: Performance, Emission and Particulate Matter. International Journal of Nanoelectronics & Materials13 (special issue), 47-64, https://ijneam.unimap.edu.my/index.php/vol-13-mei-2020-special-issue-isste-2019
  4. Ansu, A. K., Sharma, R. K., Hagos, F. Y., Tripathi, D., & Tyagi, V. V. (2020). Improved thermal energy storage behavior of polyethylene glycol-based NEOPCM containing aluminum oxide nanoparticles for solar thermal applications. Journal of Thermal Analysis and Calorimetry, 1-12. https://doi.org/10.1007/s10973-020-09976-2
  5. Tran, N. T., Pham, T. L. M., Nguyen, T. D., Van Cuong, N., Siang, T. J., Phuong, P. T., ... & Nanda, S. (2020). Improvements in hydrogen production from methane dry reforming on filament-shaped mesoporous alumina-supported cobalt nanocatalyst. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2020.06.142
  6. Arman, A., Hagos, F.Y., Abdullah, A.A., Aziz, A.R.A., Mamat, R., Cheng, C.K. and Vo, D.V.N., 2020. Kinetic and CFD Modeling of Exhaust Gas Reforming of Natural Gas in a Catalytic Fixed‐Bed Reactor for Spark Ignition Engines. Chemical Engineering & Technology. https://doi.org/10.1002/ceat.201900474
  7. Karim, Z.A.A., Kaur, E., Masharuddin, S.M.S., Khan, M.Y. and Hagos, F.Y., 2020. The characteristics of water-in-biodiesel emulsions produced using ultrasonic homogenizer. Alexandria Engineering Journal. https://doi.org/10.1016/j.aej.2019.12.030
  8. Nayak, S.K., Mishra, P.C., Noor, M.M., Hagos, F.Y., Kadirgama, K. and Mamat, R., 2019. The performance of turbocharged diesel engine with injected calophyllum inophyllum methyl ester blends and inducted babul wood gaseous fuels. Fuel, 257, p.116060. https://doi.org/10.1016/j.fuel.2019.116060
  9. Karim, Z.A.A., Khan, M.Y., Aziz, A.R.A. and Hagos, F.Y., 2019. Attaining simultaneous reduction in NOx and smoke by using water-in-biodiesel emulsion fuels for diesel engine. Platform: A Journal of Engineering, 3(2), pp.1-21.
  10. HA Hassan, R Mamat, FY Hagos (2019), Reductions of Particulate Matter Emissions of a Diesel Engine Fueled with Oxygenated and Emulsion Fuels, Journal of Biobased Materials and Bioenergy 13 (6), 764-777. https://doi.org/10.1166/jbmb.2019.1922
  11. M.N.A. Mukhtar, Ftwi Y. Hagos, M.M. Noor, Rizalman Mamat, A. Adam Abdullah, Abd Rashid Abd Aziz, (2019). Tri-fuel emulsion with secondary atomization attributes for greener diesel engine – A critical review, Renewable and Sustainable Energy Reviews, Volume 111, 490-506. https://doi.org/10.1016/j.rser.2019.05.035
  12. M Mukhtar NA, Abd Aziz, Abd Rashid, Ftwi Y Hagos, MM Noor, Kumaran Kadirgama, Rizalman Mamat, A Adam Abdullah, (2019), The Influence of Formulation Ratio and Emulsifying Settings on Tri-Fuel (Diesel–Ethanol–Biodiesel) Emulsion Properties. Energies 12, no. 9: 1708. https://doi.org/10.3390/en12091708
  13. Anusuiah Vasu, Ftwi Y. Hagos, Rizalman Mamat, M. M. Noor Jesbains Kaur. (2019). The effect of thermal cyclic variation on the thermophysical property degradation of paraffin as a phase changing energy storage material, Applied Thermal engineering, Vol. 149, pg. 22-33. https://doi.org/10.1016/j.applthermaleng.2018.12.033
  14. FY Hagos, ARA Aziz, SA Sulaiman, R Mamat, (2019) “Engine speed and air-fuel ratio effect on the combustion of methane augmented hydrogen rich syngas in DI SI engine”, International Journal of Hydrogen Energy Vol 44 (1) pg. 477-486.

https://doi.org/10.1016/j.ijhydene.2018.02.093

  1. Aziz, A. R. A., Hagos, F. Y., Anbese, Y. T., Heikal, M. R., & Firmansyah, F. (2018). Application of The Chain Code and Fourier Analysis Techniques for The Investigation of Wrinkles and Distortions on Early Flames. International Journal of Automotive and Mechanical Engineering15(4), 5709-5728. https://doi.org/10.15282/ijame.15.4.2018.1.0438
  2. Chala, Girma, Abd Abd Aziz, and Ftwi Hagos. "Natural Gas Engine Technologies: Challenges and Energy Sustainability Issue." Energies 11, no. 11 (2018): 2934. https://doi.org/10.3390/en11112934
  3. Hazrulzurina Suhaimi, Abdullah Adam, Anes G Mrwan, Zuhaira Abdullah, Mohd Fahmi Othman, Mohd Kamal Kamaruzzaman, Ftwi Yohaness Hagos, (2018) “Analysis of combustion characteristics, engine performances and emissions of long-chain alcohol-diesel fuel blends”, Fuel 220, 682-691. https://doi.org/10.1016/j.fuel.2018.02.019
  4. FY Hagos, ARA Aziz, SA Sulaiman, R Mamat, (2017) “Effect of fuel injection timing of hydrogen rich syngas augmented with methane in direct-injection spark-ignition engine”, International Journal of Hydrogen Energy 42 (37), 23846-23855. https://doi.org/10.1016/j.ijhydene.2017.03.091
  5. GT Chala, ARA Aziz, FY Hagos, (2017) “Combined effect of boost pressure and injection timing on the performance and combustion of CNG in a DI spark ignition engine”, International Journal of Automotive Technology 18 (1), 85-96. https://doi.org/10.1007/s12239-017-0009-5
  6. MF Nabil, WH Azmi, KA Hamid, R Mamat, FY Hagos, (2017) “An experimental study on the thermal conductivity and dynamic viscosity of TiO2-SiO2 nanofluids in water: Ethylene glycol mixture” International Communications in Heat and Mass Transfer 86, 181-189. https://doi.org/10.1016/j.icheatmasstransfer.2017.05.024
  7. Bahaaddein K. M. Mahgoub, Suhaimi Hassan, S. A. Sulaiman, R. Mamat, A. Abdul Adam and Ftwi Y. Hagos, (2017) “Combustion and Performance of Syngas Dual Fuelling in a CI Engine with Biodiesel Blend as Pilot Fuel”, BioResources 12 (3), 5617-5631. https://doi.org/10.15376/biores.12.3.5617-5631
  8. Yohannes T. Anbese, Abdul Rashid A. Aziz, Morgan R. Heikal, Ftwi Yohaness Hagos, Firmansyah, (2017) “Characteristics of Early Flame Development in a Direct-injection Spark-ignition CNG Engine Fitted with a Variable Swirl Control Valve”, Energies 10 (7), 964. https://doi.org/10.3390/en10070964
  9. Anusuiah Vasu, Ftwi Y. Hagos, Rizalman Mamat, M. M. Noor Wan Azmi, “Corrosion Effect of Phase Change Materials in Solar Thermal Energy Storage Application”, Renewable and Sustainable Energy Reviews Journal, Volume 76, 19-33, 2017. https://doi.org/10.1016/j.rser.2017.03.018
  10. Thamir Ibrahim, Rizalman Mamat, Ftwi Yohaness Hagos, Gholamhassan Najafi, Firdaus Basrawi, Ahmed Abdullah, omar Awad, “Thermal performance of gas turbine power plant based on exergy analysis”, Applied Thermal Engineering, Volume 115, 25, Pages 977–985, 2017. https://doi.org/10.1016/j.applthermaleng.2017.01.032
  11. Omar Awad, Rizalman Mamat, Thamir I. Kalil, Ftwi Y. Hagos, M. M. Noor, “Calorific value enhancement of Fusel oil by moisture removal and its effect on the performance and combustion of a spark ignition engine”, Energy Conversion and Management, Volume 137, Pages 86–96, 2017. https://doi.org/10.1016/j.enconman.2017.01.009
  12. Md Mahmudul Hassan, Ftwi Y. Hagos, Rizalman Mamat, “Characterization and performance of Biodiesel as an alternative fuel in diesel engine-A Review”, Renewable and Sustainable Energy Reviews 72, 497-509, 2017. https://doi.org/10.1016/j.rser.2017.01.001
  13. Ftwi Y. Hagos, Obed M. Ali, Rizalman Mamat, Abdul A. Abdullah, “Emulsification versus Blending on the Effect of Fuel Oxygenation and Substitution of Diesel for Compression Ignition Engine”, Renewable and Sustainable Energy Reviews, Volume 75, 1281–1294, 2017. https://doi.org/10.1016/j.rser.2016.11.113
  14. Samson M. Atnaw, Lakhveer Singh, Ftwi Y. Hagos, Abu Yousuf, “Road Construction Equipment Management: A Case Study on Selected Industry”, Vol 5 (1) Pp 91-97, International Journal of Engineering Technology and Sciences, 2016. https://ijets.ump.edu.my/images/archive/Vol5/IJETS11.pdf
  15. Ibrahim K. Adam, A.Rashid A.Aziz, Suzana Yusup, Morgan Heikal and Ftwi Hagos, “Optimization of Performance and Emissions of a Diesel Engine Fuelled with Rubber Seed- Palm Biodiesel Blends using Response Surface Method”, Vol 4 (2) Asian Journal of Applied Sciences, 2016. https://ajouronline.com/index.php/AJAS/article/view/3584
  16. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A. Sulaiman, “Syngas (H2/CO) in a Spark-Ignition Direct-Injection Engine: Effect of Injection Timing on Combustion, Performance and Emissions”, International Journal of Engine Research 17 (9), 921-933. https://doi.org/10.1177/1468087415623910
  17. BKM Mahgoub, S Hassan, SA Sulaiman, R Mamat, AA Adam, FY Hagos, “Dual Fuel Combustion in a CI Engine Powered by Blended Diesel-Biodiesel Fuel and Simulated Gasification Gas”, Journal of Engineering and Applied Sciences 11 (22), 12947-12952. http://www.arpnjournals.org/jeas/research_papers/rp_2016/jeas_1116_5328.pdf
  18. Babiker, M. E., Aziz, A. R. A., Heikal, M., Yusup, S., & Hagos, F. Y. (2016). Experimental and simulation study on steam gasification of phoenix-dactylifera date palm seeds. International Journal of Automotive & Mechanical Engineering13(1). http://dx.doi.org/10.15282/ijame.13.1.2016.7.0267
  19. Tigist Teshome Ayu, Mesele Hayelom Hailu, Ftwi Yohaness Hagos, Samson Mekbib Atnaw, “Energy Audit and Waste Heat Recovery System Design for a Cement Rotary Kiln: a Case Study”, Vol 12 Pp 2983-3002, International Journal of Automotive and Mechanical Engineering, 2015. http://dx.doi.org/10.15282/ijame.12.2015.14.0249
  20. Hagos, F.Y., Aziz, A.R.A. and Sulaiman, S.A., 2015. Methane enrichment of syngas (H 2/CO) in a spark-ignition direct-injection engine: Combustion, performance and emissions comparison with syngas and Compressed Natural Gas. Energy, 90, pp.2006-2015, https://doi.org/10.1016/j.energy.2015.07.031
  21. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A. Sulaiman, “Investigation for deposit formation of a direct-injection spark-ignition engine powered on syngas”, International Journal of Automotive Technology, 2015, 16(3):479−485. https://doi.org/10.1007/s12239-015-0050-1
  22. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A. Sulaiman, “Syngas (H2/CO) in Spark-ignition Direct-injection Engine. Part 1: Combustion, Performance and Emissions Comparison with CNG”, International Journal of Hydrogen Energy; 2014, 39; 17884-17895, https://doi.org/10.1016/j.ijhydene.2014.08.141
  23. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A. Sulaiman, “Trends of Syngas as a fuel in internal combustion engines”, In the special issue of “Recent Trends in Internal Combustion Engines” in Advances in Mechanical Engineering Journal, Volume 2014 (2014), Article ID 401587, https://doi.org/10.1155/2014/401587
  24. Mohammed Yahaya Khan, A. K. Zainal Ambri, Ftwi Yohaness Hagos, Abdul Aziz Rashid, and Isa Tan, “Current trends in water-in-diesel emulsion as a fuel”, The Scientific World Journal, Volume 2014 (2014), Article ID 527472, https://doi.org/10.1155/2014/527472
  25. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A, Sulaiman, “Combustion Characteristics of DI SI Engine Fuelled with Producer gas”, Energy Education Science and Technology Part A; 2013, 31(3); 1683-1698.
  26. Mulu BayrayAnwar MustefaFtwi Yohaness HagosHailay KirosAsfafaw HaileslasiePetros Gebray, et al. “Wind Energy Data Analysis and Resource Mapping of Geba Catchment, North Ethiopia”, Wind Engineering 05/2013; 37(4):333–346, https://doi.org/10.1260/0309-524X.37.4.333
  27. Ftwi Yohaness Hagos, A, Rashid A. Aziz and Shaharin A, Sulaiman, “Study of Syngas Combustion Parameters Effect on Internal Combustion Engine ”, Asian Journal of Scientific Research, 2013,  6 (2); 187-196, https://doi.org/10.3923/ajsr.2013.187.196
  28. Ftwi Yohaness Hagos, A, Rashid A. Aziz and Shaharin A, Sulaiman, “Combustion Characteristics of Late Injected CNG in a Spark Ignition Engine Under Lean Operating Conditions”, Journal of Applied Sciences, 2012, 12(23), 2368-2375, https://doi.org/10.3923/jas.2012.2368.2375

 

 

Conference and conference proceeding

 

  1. Hassan, H. A., Hagos, F. Y., Kadarohman, A., Sardjono, R. E., Khoerunnisa, F., Zhang, B., & Jiang, X. X. (2021, February). Engine Emissions Analysis of Emulsified Fuel of Different Blend Ratios. In IOP Conference Series: Materials Science and Engineering (Vol. 1062, No. 1, p. 012016). IOP Publishing. https://doi.org/10.1088/1757-899X/1062/1/012016
  2. Rosdi, S. M., Mamat, R., Alias, A., Hamzah, H., Sudhakar, K., & Hagos, F. Y. (2020, May). Performance and emission of turbocharger engine using gasoline and ethanol blends. In IOP Conference Series: Materials Science and Engineering (Vol. 863, No. 1, p. 012034). IOP Publishing. https://doi.org/10.1088/1757-899X/863/1/012034
  3. Abdullah, N., Jamiluddin, J., Hagos, F. Y., & Azmi, N. S. N. (2020, April). Experimental investigation on pineapple leaf fiber as biomass source for renewable energy application. In IOP Conference Series: Materials Science and Engineering (Vol. 788, No. 1, p. 012059). IOP Publishing. https://doi.org/10.1088/1757-899X/788/1/012059
  4. Norhafana, M., Noor, M. M., Hagos, F. Y., & Hairuddin, A. A. (2020, April). Diesel and various blending nanoparticles based diesel, fuel properties study. In IOP Conference Series: Materials Science and Engineering (Vol. 788, No. 1, p. 012061). IOP Publishing. https://doi.org/10.1088/1757-899X/788/1/012061
  5. Bahrudin, M. N. H., Hagos, F. Y., Mamat, R., Abdullah, A. A., & Karim, Z. A. A. (2019, January). Comparison between tri-fuel (diesel-ethanol-biodiesel) emulsion with and without surfactant. In AIP Conference Proceedings (Vol. 2059, No. 1, p. 020056). AIP Publishing LLC. https://doi.org/10.1063/1.5085999
  6. Zurina, H., Adam, A., Anes, G. M., Abdullah, Z., Fahmi, M., Kamal, M., & Hagos, F. Y. (2019, January). A comparative analysis on emissions of some next generation long-chain alcohol/diesel blends in a direct-injection diesel engine. In AIP Conference Proceedings (Vol. 2059, No. 1, p. 020053). AIP Publishing LLC. https://doi.org/10.1063/1.5085996
  7. Norhafana, M., Noor, M. M., Hairuddin, A. A., Hagos, F. Y., Ayob, S. I., Kadirgama, K., & Ramasamy, D. (2019, January). An experimental study of the performance and emission characteristics of a compression ignition (CI) engine fueled with palm oil based biodiesel. In AIP Conference Proceedings (Vol. 2059, No. 1, p. 020036). AIP Publishing LLC. https://doi.org/10.1063/1.5085979
  8. Norhafana, M., Noor, M. M., Sharif, P. M., Hagos, F. Y., Hairuddin, A. A., Kadirgama, K., ... & Hoang, A. T. (2018, December). A review of the performance and emissions of nano additives in diesel fuelled compression ignition-engines. In IOP Conference Series: Materials Science and Engineering (Vol. 469, No. 1, p. 012035). IOP Publishing. https://doi.org/10.1088/1757-899X/469/1/012035
  9. Kaur, J., Jamil, N., Shahabuddin, S., Pandey, A. K., Saidur, R., Yohaness, F., & Singh, B. (2018, October). The Effects of Graphene on Microstructural and Thermal Properties of Calcium Chloride Hexahydrate PCM. In 2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE) (pp. 1-6). IEEE. https://doi.org/10.23919/ICUE-GESD.2018.8635788
  10. Hassan, M. M., Hagos, F. Y., & Mamat, R. (2018, June). Comparative Analysis of Diesel, Diesel-Palm Biodiesel and Diesel-Biodiesel-Butanol Blends in Diesel Engine. In Energy Sustainability (Vol. 51418, p. V001T04A007). American Society of Mechanical Engineers. https://doi.org/10.1115/ES2018-7571
  11. Karim, Z. A. A., Tee, D., Khan, M. Y., & Hagos, F. Y. (2018). Investigation of Water-in-Biodiesel Emulsion Characteristics Produced by Ultrasonic Homogenizer. In MATEC Web of Conferences (Vol. 225, p. 01012). EDP Sciences. https://doi.org/10.1051/matecconf/201822501012
  12. Yahaya, N. H., Hagos, F. Y., & Basrawi, M. F. (2018). Indoor Air Quality Evaluation of Commercial Buildings In Kuantan. In MATEC Web of Conferences (Vol. 225, p. 05018). EDP Sciences. https://doi.org/10.1051/matecconf/201822505018
  13. HM Mahmudul, FY Hagos, R Mamat, AA Abdullah, (2018) “Effect of Alcohol on Diesel Engine Combustion Operating with Biodiesel-Diesel Blend at Idling Conditions”, IOP Conference Series: Materials Science and Engineering 318 (1), 012071. https://doi.org/10.1088/1757-899X/318/1/012071
  14. MH Low, NAM Mukhtar, FY Hagos, MM Noor, (2017) “Tri-fuel (diesel-biodiesel-ethanol) emulsion characterization, stability and the corrosion effect”, IOP Conference Series: Materials Science and Engineering 257 (1), 012082. https://doi.org/10.1088/1757-899X/257/1/012082
  15. KH Lee, NAM Mukhtar, FY Hagos, MM Noor, (2017) “A study of the stabilities, microstructures and fuel characteristics of tri-fuel (diesel-biodiesel-ethanol) using various fuel preparation methods”, IOP Conference Series: Materials Science and Engineering 257 (1), 012077. https://doi.org/10.1088/1757-899X/257/1/012077
  16. HM Mahmudul, FY Hagos, R Mamat, MM Noor, IM Yusri, (2017) “Effect of oxygenate additive on diesel engine fuel consumption and emissions operating with biodiesel-diesel blend at idling conditions”, IOP Conference Series: Materials Science and Engineering 257 (1), 012084. https://doi.org/10.1088/1757-899X/257/1/012084
  17. W.M. Asyraf, Anusuiah Vasu, Ftwi Y. Hagos, M. M. Noor, Rizalman Mamat, “Transient Modelling of Heat Loading of Phase change Material for Energy Storage”, 2nd International Conference on Automotive Innovation & Green Energy Vehicle AiGEV 2016. 1-3, 2016, Cyberjaya, Malaysia. https://doi.org/10.1051/matecconf/20179001078
  18. Redhwan, A. A. M., Azmi, W. H., Sharif, M. Z., & Hagos, F. Y. (2017). Development of nanolubricant automotive air conditioning (AAC) test rig. In MATEC Web of Conferences (Vol. 90, p. 01050). EDP Sciences.             https://doi.org/10.1051/matecconf/20179001050
  19. Ang Chan Mun, Ftwi Y. Hagos, Rizalman Mamat, Ahmed Nurye Umer, W. H. Azmi, Modelling of Phase Change Material for Energy Storage in Concentrating Solar Thermal Cooking Stove, International Conference on Mechanical Engineering and Advanced Material 2015, 3-4 December 2015, Kota Kinabalu, Sabah, Malaysia
  20. Tesfay AH, Hagos FY, Yohannes KG, Nydal OJ and Kahsay MB. Preparing side charging of PCM storage: theoretical and experimental investigation. IOP Conference Series: Materials Science and Engineering. 2015; 100: 012021. https://doi.org/10.1088/1757-899X/100/1/012021
  21. Mahgoub BKM, Sulaiman SA, Karim ZAA and Hagos FY. Experimental study on the effect of varying syngas composition on the emissions of dual fuel CI engine operating at various engine speeds. IOP Conference Series: Materials Science and Engineering. 2015; 100: 012006. https://doi.org/10.1088/1757-899X/100/1/012006
  22. Dawit Abay Tesfamariam, Mulu Bayray, Meseret Tesfay, Ftwi Yohaness Hagos, “Modelling and Experiment of Solar Crop Dryer for Rural Application”, International Conference on Recent Advancement in Mechanical Engineering and Technology (ICRAMET 2015), April 2015. http://jchps.com/specialissuse9.html
  23. Amir Aziz, Wong Chung Siong, Rizalman Mamat and Ftwi Yohaness Hagos, “Exhaust Emissions Reduction of Diesel Engine Fueled with Emulsified Palm Oil Methyl Esters”, Applied Mechanics and Materials; 2014, 660 (2014); 457-461, https://doi.org/10.4028/www.scientific.net/AMM.660.457
  24. Ftwi Yohaness Hagos, A. Rashid A. Aziz and Shaharin A. Sulaiman, “Effect of Air-fuel Ratio on the Combustion Characteristics of Syngas (H2:CO) in Direct-injection Spark-ignition Engine”, Energy Procedia, 2014, 61, 2567–2571, https://doi.org/10.1016/j.egypro.2014.12.047
  25. Anwar Mustefa Mahmud, Mulu Bayray Kahsay, Asfafaw Hailesilasie, Ftwi Yohaness Hagos, Petros Gebray, Hailay Kiros Kelele, et al., “Solar Energy Resource Assessment of the Geba Catchment, Northern Ethiopia”, Energy Procedia, 2014, 57, 1266 – 1274, https://doi.org/10.1016/j.egypro.2014.10.116
  26. Ftwi Yohaness Hagos and A. Rashid A. Aziz, “Mass Fraction Burn Investigation of Lean Burn Lower Calorific Value Syngas in Direct-injection Spark-ignition Engine”, SAE 2014 World Congress and Exhibition, SAE Technical Paper 2014-01-1336, https://doi.org/10.4271/2014-01-1336
  27. Anwar Mustefa Mahmud, Mulu Bayray Kahsay, Asfafaw Hailesilasie, Ftwi Yohaness Hagos, Petros Gebray, Hailay Kiros Kelele, et al., “Solar Energy Resource Assessment of the Geba Catchment, Northern Ethiopia”, Proceedings, Solar World Congress 2013, Cancun, Mexico, 3 – 7 November 2013. https://doi.org/10.1016/j.egypro.2014.10.116
  28. Anwar Mustefa Mahmud, Mulu Bayray Kahsay, Asfafaw Hailesilasie, Ftwi Yohaness Hagos, Petros Gebray, Hailay Kiros Kelele, et al., “Solar Potential in Geba Catchment”, Proceedings of International Congress: Livelihood 2013, Mekelle, Ethiopia, 17-21 September 2013
  29. Ftwi Yohaness Hagos, A, Rashid A. Aziz and Shaharin A, Sulaiman, ``Early Flame Development Image Comparison of Low Calorific Value Syngas and CNG in SI DI Engine``, International Conference on Energy and Environment, Putrajaya, Malaysia, 2013, https://doi.org/10.1088/1755-1315/16/1/012070
  30. Mulu Bayray, Anwar Mustefa, Hailay Kiros, Asfafaw Haileslasie, Ftwi Yohannes, Petros Gebray, Gebre Gebretsadik, Solomon T/Michael, Mohammedsalih Abdelkadir, Mesele Hayelom, Ashenafi Kebedom, Ashenafi Atsbeha, Dawit Abay, Alemu Yemane, 2012. Assessment and Identification of Wind Resource for Rural Application in Geba Catchment. Proceedings of the NARF program workshop, Addis Ababa.
  31. Ftwi Yohaness Hagos, A, Rashid A. Aziz and  Isa Mohd Tan , “Water-in-diesel emulsion and its micro-explosion phenomenon-review”, International Conference on Fluid Dynamics and Thermodynamics Technologies, Bali, Indonesia, 2011,  IEEE explore digital library, http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6014903&tag=1, https://doi.org/10.1109/ICCSN.2011.6014903
  32. Gebrekidan Gebresillasie and Ftwi Yohaness Hagos, “Bio-energy as alternative renewal energy for sustainable rural development in the case of Ethiopia: “Win –Win” approach”, Tigrai Development Symposium, August 28-29, 2009, Mekelle, Ethiopia
  33. Ftwi Y. Hagos and Naveen Kumar, ”Fuelling A Small Capacity Agricultural Unmodified Diesel Engine With Macro-Emulsified Ethanol, Diesel &Jatropha Derived Biodiesel: Performance &Emission Study”, 14th ISME International conference on Mechanical Engineering in Knowledge age, December, 2005
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