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The Staff

Prof. Leelananda Rajapaksha

Associate Professor

 
Office Address: 

Department of Mechanical Engineering,
University of Peradeniya,
Peradeniya,20400,
Sri Lanka.

 Email: 
lraja@pdn.ac.lk
Telephone: 
+94 812 393 606
Personal Website: 
 
 

Educational Qualifications :

  • PhD : University of London(UCL), London, United Kingdom (2003)
    Theme - Vapour compression refrigeration and refrigerant mixtures
  • MEng :Asian Institute of Technology, Bangkok, Thailand (1998)
    Theme- Biomass energy technologies greenhouse gas minitgation.
  • BScEng :First Class (Hons) in Mechanical Engineering (1993)
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Professional Qualifications :

  • Corporate Member, Institution of Mechanical Engineers, London (MIMechE)
  • Corporate Member, institution of Mechanical Engineeris, Sri Lanka (MIESL)
  • Chartered mechanical engineers (CEng,ecuk)
  • Member- International Institute of ammonia refrigeration (MIIAR)
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Awards & Prizes :

  • Commonwealth Academic Staff Fellowship, 2008 – Dept o f Mechanical Engineering, University College London
  • Overseas Research Student scholarship (ORS), 1999 - 2003, offered by the British government, tenable at University of London, London, UK.
  • Full sholarship (20 months) AIT, Bangkok, Thailand- Master's degree 1997- 1998
  • Final Eaxamination in Engineerinng- Award for the best performances Mechanical Engineering.
  • Nomination for Tedd & Perry prize of theinstitute of Refrigeration (IOR) London, UK for outstanding research in the field of Refrigeration in UK Universitiys (2003)
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Books:

  • Refrigeration and Refrigerants, Leelananda Rajapaksha, For undergraduate covering the sections on Refrigeration in semester 6, 7/8, suitable for technical personnel in the field. Covers many issues associated with alternative refrigerants and mixtures, 2007, ISBN 978 – 955 – 50626 – 0 – 2
  • Written in Sinhala covering practical, operational, and safety aspects of the refrigerant ammonia. ISBN 978 – 955 – 50626 – 1 – 9
  • Written in Sinhala, covering recent changes in the field of refrigeration, refrigerant mixtures and retrofit aspects.ISBN 978 – 955 – 50626 – 2 – 6

 

Research Intersests :

  • Refrigeration and refrigerants; heat transfer and performances of refrigerant mixtures, alternative refrigerants and natural refrigerants. Innovative systems based on green concept, application of green concept to industrial systems
  • Biomass energy technologies and renewable energy systems

Selected Research Publications (in refereed journals) :

  • Leelananda Rajapaksha, Carbon dioxide - Way forward for the refrigeration, air conditioning and heat pump industry, Engineer, the Journal of the Institution of Engineers’, Sri Lanka, Vol xxxxiii, No 2, April 2010
  • Leelananda Rajapaksha, Long term natural alternatives for halogenated refrigerants – Hydrocarbons, Engineer, the Journal of the Institution of Engineers’, Sri Lanka, Vol xxxxiii, No 1, January 2010
  • Leelananda Rajapaksha, Refrigerated storage facilities – Aspects of energy efficiency, design, installation and operation,  Engineer, the Journal of the Institution of Engineers’, Sri Lanka, Vol xxxxiii, No 1, January  2010
  • Leelananda Rajapaksha, Performance of Non-CFC Refrigerants for Low temperature refrigeration,  Engineer, the Journal of the Institution of Engineers’, Sri Lanka  , Engineer , Vol XXXXII, No 02,  2009
  • Leelananda Rajapaksha, 2007, Influence of special attributes of zeotropic refrigerant mixtures on design and operation of vapour compression refrigeration and heat pump systems, Energy Conversion and Management, vol 48 pp 539 –545
  • Leelananda Rajapaksha, 2005, Zeotropic Refrigerant Mixtures in Vapour Compression Refrigeration SystemsIssues and Implications,  Engineer, the Journal of the Institution of Engineers’, Sri Lanka, October 2005
  • L Rajapaksha, K O Suen, 2004, Influence of liquid receiver on the performance of reversible heat pumps using refrigerant mixtures, International Journal of Refrigeration, Vol. 27, Issue 01, 2004, pp 53 – 62.
  • L Rajapaksha, K O Suen, 2003, Influence of reversing methods on the performance of reversible water-to-water heat pump, Applied Thermal Engineering, Vol. 23, Issue 01, 2003, pp 49 – 64.
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Conferences:

  • Leelananda Rajapaksha and Savithra Wijesuriya, 2008, Influence of safety concerns on energy consumption – the case of industrial ammonia refrigeration systems, 14th Annual research session, 2008, University of Peradeniya, Sri Lanka
  • Leelananda Rajapaksha and YMCEK Abyekoon, 2007, Experimental investigation of condensation heat transfer coefficient of refrigerants during in-tube condensation, 13th Annual research session, 2007, University of Peradeniya, Sri Lanka
  • Leelananda Rajapaksha and MPN Rajapakse, 2006, Effects of suction line heat exchanger on the performances of retrofitted refrigeration system with non-CFC refrigerants, 12th Annual research session, 2006, University of Peradeniya, Sri Lanka
  • Leelananda Rajapaksha and AH Kandamby, 2005, Alternative non-CFC refrigerants for low temperature refrigeration applications, 11th Annual research session, 2005, University of Peradeniya, Sri Lanka.
  • Leelananda Rajapaksha, CMJ Gunathilake, AH Kandamby and SMTS Sundarapperuma, 2004, Performance prediction of vapour compression refrigeration systems retrofitted with non-CFC alternatives, 10th Annual research session, 2004, University of Peradeniya, Sri Lanka.
  • L Rajapaksha, D Colbourne and K O Suen, 2002, Size matching consideration during replacement of the condensing unit, Paper R9-5, Ninth International Refrigeration and Air Conditioning Conference at Purdue, USA, 2002.
  • D Colbourne, L Rajapaksha and K O Suen, 2002, System balancing for zeotropic refrigerants, Paper R1-1, Ninth International Refrigeration and Air Conditioning Conference at Purdue, USA, 2002.
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