Dr. Rohitha Weerasinghe, University of the West of England, England

Rohitha Weerasinghe, A member of the combustion group at Imperial College London where he obtained his PhD after reading in turbulent reacting flows in gas turbine combustion. Upon returning to Sri Lanka he conducted research in combustion in stoves and electric and hybrid vehicles. His solar assisted electric car project won the National Transport award in 2003 and was the first of the kind in Sri Lanka and was presented in Japan at the JSAE conference. He then joined University of Sussex carrying out research in hybrid powertrains and heat recovery bottoming cycles. He published his research regularly and was a member of the SAE hybrid powertrains committee. Since then he worked in the industry as an energy specialist where he devised energy strategies large commercial projects. In 2012 he joined UWE where he conducts research in heat transfer in downhole measuring equipment. He has made publications in this area and currently working on hybrid powertrain concept for river boats and marine applications. And he was a reviewer for the journals "Applied Thermal Engineering", "SAE Transactions" and "Journal of Combustion".


Prof. Chintha Jayasinghe, University of Moratuwa, Sri Lanka

Title: Effect of Construction Materials on Embodied and Operational energy of multi-storey houses in Tropical climates
Abstract: Housing sector consumes a significant amount of energy in the form of embodied and operational energy while consuming a vast amount of natural resources to manufacture the construction materials needed.  Such over exploitation of natural resources as building material has caused a severe impact on the environment.  Various controlling measures taken to protect the environment has escalated the prices of natural resource based building materials.  This situation has been further aggravated due to the energy consumption in different stages such as material manufacturing, construction and then during building operation.  Hence, many investigations have been carried out on alternative materials that could have less embodied energy and also has the potential to assist in reducing the operational energy.
In this presentation that concentrates on energy efficient building forms and configurations applicable for tropical climatic conditions, the use of alternative materials and non-biodegradable waste based building materials have been paid greater attention.  The effective use of stabilized earth as a partition and loadbearing alternative walling material is presented with special emphasis on the embodied energy while highlighting the impact on operational energy in tropical climatic conditions.  The use of re-cycled EPS beads to produce a light weight panel of different thicknesses suitable for loadbearing construction of multi-storey houses will also be presented highlighting the facts related to embodied and operational energy.  Comparisons drawn with the conventional natural resource based building materials will also be presented to highlight the usefulness of recognizing such alternative materials and systems for main stream housing sector.