Centre for Energy and Built Environment Research (CEBER)


Aims & Objectives:

The efficient utilisation of energy resources and reduction of the environmental impacts of energy consuming equipment and buildings are of vital importance for carbon emission reduction and economic development and prosperity.


The activities of the Group make a contribution in a number of fundamental and applied areas in the energy and environment field which include:

Heating, Cooling and Refrigeration

The design of more efficient systems to provide the required thermal environment for buildings and processes involves analytical system simulation for design and control optimisation studies and the application of advanced control techniques to minimise energy consumption. Specific projects include the investigation of the performance of alternative and natural refrigerants, such as CO2 hydrocarbons and air, the application of artificial intelligence techniques for performance prediction and adaptive control and the design of more efficient food refrigeration equipment.

Microclimate and Environmental Design

This includes investigations of energy consumption, indoor air quality and natural ventilation strategies in operational buildings, including user satisfaction; experimental and computational studies of the Urban Heat Island and its effect on building design.

Single and Two-phase Heat Transfer and Thermal Systems

The Group carries out one of the largest single and two-phase heat transfer research activities in the UK. This includes long-term research on flow boiling in small to micro passages in collaboration with other leading UK universities and industrial partners. Heat transfer enhancement techniques and foam heat exchangers are also studied. Particular projects in this area include boiling heat transfer and flow visualization in microchannels. electrohydrodynamic enhancement, thermofluid transport phenomena in pressurised protective clothing and turbulent natural convection. Other areas of activity include: improvement of energy conversion efficiency from renewable sources; waste minimisation and impacts of pollutants on humans and animals The research work is supported by grants from the EPSRC, other government funding bodies such as DEFRA, DTI, the EU, and industry.

Experimental data for flow boiling of R134a in vertical metallic small to micro diameter tubes


The Group has at its disposal substantial facilities, which include:

  • 80 m3 environmental chamber
  • Anechoic chamber
  • Refrigeration and heat pump test rigs
  • A trigeneration test facility
  • Heat transfer test rigs for single phase as well as boiling and condensation research including phase-change materials
  • A range of equipment for measuring thermal comfort, environmental air quality and ventilation rates
  • Thermal imaging equipment
  • Advanced flow visualization facility

The experimental work is backed by theoretical work using in-house developed simulation programs and a suite of commercial packages.



  • Prof Tassos G. Karayiannis


Name and Title Phone Email Office
Mr Colin Axon – Lecturer

... full profile

+44 (0)1895 267932 Email Mr Colin Axon HWLL121
Dr Zahir Dehouche – Lecturer - MSc Course Director (Sustainable Energy Technologies and Management)

... full profile

+44 (0)1895 267559 Email Dr Zahir Dehouche HWLL128
Dr Yunting Ge – Reader - MSc project coordinator/ MSc Course Director (Building Services Engineering)

Academic Career Dr. Ge is currently a Reader in the Building Services Subject Group and a member of the... full profile

+44 (0)1895 266722 Email Dr Yunting Ge HWLL118
Professor Tassos Karayiannis – Vice-Dean Education

EDUCATION PhD 1986, Engineering Science, Natural Convection in rectangular Cavities, The University of Western Ontario, London, Ontario, Canada. BSc... full profile

+44 (0)1895 267132 Email Professor Tassos Karayiannis HWLL 255
Professor Maria Kolokotroni – Professor / Theme Leader for Resource Efficient Future Cities

Academic Career I studied for an MSc in Environmental Design and Engineering at the Bartlett School, University College London... full profile

+44 (0)1895 266688 Email Professor Maria Kolokotroni HWLL122
Dr Harjit Singh – Lecturer, UG Course Director (Mechanical Engineering)

Dr Singh received his BEng, and MEng (IIT Roorkee, India) with specialisation in Mechanical and Thermal Engineering disciplines and... full profile

+44 (0)1895 265468 Email Dr Harjit Singh HWLL131
Professor Savvas Tassou – Director of the Institute of Energy Futures / Professor / Theme Leader for Energy Efficient and Sustainable Technologies

Academic and Professional Qualifications BSc (1st Class Honours) Mechanical Engineering - University of Westminster PhD Department of Mechanical Engineering... full profile

+44 (0)1895 266865 Email Professor Savvas Tassou MCST257 (Institute of Energy Futures);ELTJ087d (CSEF)
Dr Jan Wissink – Lecturer in Aerospace Engineering, Chair of M.C. Panel

... full profile

+44 (0)1895 267371 Email Dr Jan Wissink HWLL112

Visiting Professors

  • Prof David B.R. Kenning
  • Prof Michael W. Collins

Visiting Senior Fellows

  • Dr J. Lewis
  • Mr Martin Ratcliffe
  • Dr Peter Warren
  • Dr Ekhlas Mohammed Fayyadh

Research Technician

  • Mr Costas Xanthos

Research Fellows/Assistants

  • Dr Mohamed Mahmoud
  • Dr Amir Raeisi

Research Students

  • Hirad Azmin
  • Panayiotis Pouloupatis
  • Jason Shilliday
  • Savvas Theodorou
  • Wilberforce Bekoe
  • Ifigenia Farrou
  • Emily Pike-Wilson
  • Giovanna Cossali
  • Arben Ferhati
  • Nicoletta Kythreotou
  • Gregoris Panayiotou
  • Baboo (Lesh) Gowreesunker
  • I Dewa Made Cipta Santosa
  • Paul O’Sullivan
  • Mehmed Özdemir
  • Amirah Sahar
  • Falah Alzuwaid
  • James Allan
  • Tygue Doyle
  • Abdulla Tahhan
  • Ali Shefik
  • James Boampong
  • Mahmood Alam
  • Gurumwal George Longjan


Conferences & Meetings organised by CEBER:








Prof Tassos G. Karayiannis

Postal Address

Centre for Energy and Built Environment Research (CEBER)
Mechanical Engineering
School of Engineering and Design
Brunel University
Uxbridge, Middlesex
UB8 3PH, United Kingdom
Tel. +44 (0)1895 267132/67120
Fax. +44 (0)1895 256392
Email: tassos.karayiannis@brunel.ac.uk

Location in University

Centre for Energy and Built Environment Research (CEBER)
1st floor of Howell Building

Page last updated: Thursday 20 August 2015