Eng. J.H.S.K. Jayamaha

Senior Lecturer (G II)

B.Sc. Eng. (Peradeniya), PGDip. Comp(Colombo), MSc Eng(Wolverhampton),MSc.Eng(EM)(IST),MSc.(RENE)(KTH,Sweden),AMIE(SL)

Mechanical Engineering
Faculty of Engineering Technology
Senior Lecturer

Central Campus, 1st floor intermediate, Science and Technology building, Room No : E112

Office: 112881086, Ext: 586 Mobile: 719684325

E-mail: jhjay@ou.ac.lk sisirajayamaha@gmail.com

Mr.J.H.S.K.Jayamaha obtained his first degree in Engineering from Faculty of Engineering University of Peradeniya. He started his career joining the Open University of Sri Lanka in 1984 as a demonstrator in Mechanical Engineering. After serving one and half years he joined the State Fertilizer Manufacturing Corporation at Sapugaskande, Kelaniya as a Chemical Engineer at Urea Plant in 1985. He has returned to the OUSL in 1986 and rejoined as a Demonstrator in the same department and subsequently joined the permanent staff in 1988. He was promoted to the post of Lecturer in 2006 and currently serving the Department of Mechanical Engineering as a Senior Lecturer.  He worked as an Assistant facilitator of the Sustainable Energy Engineering Master program (SEE World) of Royal Institute of Technology (KTH) Sweden from October 2010 to November 2011 and as the Facilitator of the Same program from 2017-2018.

He attended a training program of Computer Aided Design and Manufacturing (CAD/CAM) conducted by Asian Productivity Organization (APO) in Chennai and Bangalore in 1996. He obtained a Postgraduate Diploma in Computer Technology from Institute of Computer Technology (ICT), University of Colombo in 1996. He received a scholarship from ADB in 1999 to study his Masters degree in Engineering product Design at the University of Wolverhamption, UK. During his Master studies he worked as a researcher at PD&E Automotive BV, the R&D organization of NedCar at Helmond, Netherlands from June 2000-June 2001. He won a scholarship to do his second Masters degree in Renewable Energy from KIC Inno Energy and UPC Barcelona under European Master degree program of RENE in 2011. He studied first year at KTH, Stockholm, Sweden and second year at IST, University of Lisbon. During his Master thesis work he worked at Institute of Bio Engineering & Bio Technology (IBB) at IST, Lisbon from March 2013 to Noverber 2013. He also studied at ESADE business school in St.Cugart, Barcelona during summer vacation of the same program in 2012.

Areas of Specialization:

Industrial Engineering and Renewable Energy

Research interests:

Biodiesel, Biofuels, Biogas, Waste management and Renewable Energy



Programme Coordination:

Bacholar of Technology Honors in Engineering (BTech)

Course Coordination:

Industrial Engineering, Renewable Sources of Energy, Energy, Environment and sustainability


Journal Research papers

1. A numerical analysis for selecting a suitable location for installing Vertical Axis Wind Turbine (VAWT) in KTH campus.

JHSK Jayamaha,M M Shourov Akter, Md. Nasimul Islam Maruf, and Mohammad Rokonuzzaman.The AIUB Journal of Science and Engineering (AJSE), Vol. 13, No. 1, August 2014

2.Supported Enzymes as Catalysts for Biodiesel Production
JHSK Jayamaha, Prof.Francisco Lemos, Prof.Luis Fonseca, Prof.Joaquim Cabral, Institute for Biotechnology and Bioengineering, Institution Superior Tecnico, University of Lisbon, SLEMA Journal, Volume 18, No. 1, March 2015

3. Feasibility study for an Anearobic digester system for Dedicated Economic Centre at  Dambulla.  SLEMA Journal, Volume 21, No.2, September 2018.



Conference papers

1.An Analysis of the DuPont’s Strategy throughout the Development of the Montreal Protocol

M.M Shourov Akter, Mohammad Rokonuzzaman , J.H.S.K.Jayamaha. Department of Energy Technology, The Royal Institute of Technology, Stockholm, Sweden. International Conference on the Development in Renewable Energy Technology [ICDRET] 2014: Paper 128.

Research Projects Supervised: BTech Hons in Engineering/MTech in Industrial Engineering

  1. Green tire handling system for solid tire production line at Load star by Eng. P.N. Thenuwara. (2015)
  2. Impact of automobile air conditioning system operating condition on fuel economy by D.N. Gunawardhana (2016)
  3. A solid waste management system and a suitable anaerobic digester system for the dedicated economic center at Dambulla by W.M.H. Weerakoon. (2017)
  4. Low cost renewable energy powered Air Conditioner by S.Panditharatne (2017)
  5. Design of a mini injection molding machine for recycling plastic waste by D.D.S.M. Gunawardhana (2018)
  6. Design and modification of biomass boiler for reducing blower noise level and ash content release into the environment  at Jetwing lagoon Hotel, Negombo by H.T.M.K.Bandara (2018)
  7.  Railway electrification system parallel to the southern highway by H.H.D.Nalin (2019)
  8. Design and implement a mechanism to improve the jingwei cardboard cutter plotting process by L.H.R.Chamara (2020)
  9. Conduit path inspection and mapping robot by E.S.B.Sameera ( 2020)
  10. Semi- automated loading machine for sausage packing process at the pussalla sausage factory by R.P.S.P.Rajapaksha (2020)
  11. Development of a methodology for the reduction of the vibration of radial gates by J.M.D.Tharinda (2020)
  12. Mechanizing an existing scissor jack to lift automobile vehicles by K.Arunkumar (2020)


Projects in progress 

  1. Condenser cooling method for freezers in Air-conditioned supermarkets by K.A.S.Ranasinghe (2022)
  2. Design and fabrication of a coconut husk chip dryer by U.V.D.A.Shirantha (2022)
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