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Ljubomir Jankovic

Professor of Zero Carbon Design

Birmingham School of Architecture and Design
Email:
lubo.jankovic@bcu.ac.uk
Phone:
+44(0)121 331 5113
Biography

Lubo Jankovic is a Professor at Birmingham School of Architecture and Design. He leads a Master’s course in Zero Carbon Architecture and Retrofit Design, as well as conducting multidisciplinary research in the field of zero carbon design of buildings. Lubo also established the Zero Carbon Lab research group.

In a career spanning three decades, Lubo has worked as an academic, researcher and practitioner on instrumental monitoring, dynamic simulation and environmental design of buildings. His work includes the creation of a learning simulation model for buildings, research into both zero carbon designs and retrofit of buildings, and a patent for an expendable and contractible building.

He has also conducted research that aided the development of the Birmingham Zero Carbon House, a ground-breaking carbon-neutral building based on a redbrick Victorian house. This research showed how to convert existing buildings into zero carbon homes, helping eliminate energy bills.

Lubo has established an international conference series, Zero Carbon Buildings Today and in the Future, strengthening partnerships and collaborations, while his book, ‘Designing Zero Carbon Buildings Using Dynamic Simulation Methods’, has been adopted as a core text at several UK, US and European universities.

He holds a BSc from the University of Belgrade and a PhD from the University of Birmingham, both in mechanical engineering. He is a chartered engineer, a Fellow of the Institution of Analysts and Programmers, and a member of both the Chartered Institution of Building Services Engineers and ASHRAE.

Current Activity

Zero Carbon Lab

Professor Jankovic has established a multidisciplinary group at the University called Zero Carbon Lab that conducts research into design of new and retrofit of existing buildings into zero carbon buildings and develops champions of change from carbon-intensive to carbon-neutral architecture and designers for the future world.

Research interests and expertise

Monitoring and experimentation with the Birmingham zero carbon house

The Birmingham Zero Carbon House is a retrofitted Victorian house that has achieved carbon negative performance. The house has been extensively simulated in parallel with detailed instrumental monitoring, collecting data of energy production and consumption as well as indoor thermal conditions. Data from instrumental monitoring of 20 parameters in and outside the house at one minute intervals are used to evaluate energy and carbon performance, as well as to calibrate dynamic simulation models. These models are then used for experimental investigation of the house performance under different occupancy patterns and future climates. The research indicates that the climate change will require a robust approach to the design of new and retrofit applications that not only deals with higher summer temperatures but also with lower winter temperatures.

Pathways for long term zero carbon retrofit

This project generalises the experimental research with the Birmingham Zero Carbon House and looks into long term optimisation methods for zero carbon retrofit of various house archetypes, and into design interventions for climate change adaptation and mitigation. The multi-objective optimisation had three conflicting objectives: reducing carbon emissions, reducing construction cost and providing thermal comfort. The design variables related to the building fabric consisted of external wall construction, external glazing, window to wall ratio, infiltration, shading and thermal mass. Optimisation analysis was run using Birmingham current weather files, and future weather files for 2030, 2050 and 2080.

Development of an expert system for zero carbon design and retrofit

Opportunities for retrofit of buildings are often determined by assessors on site, using steady state low resolution energy calculation tools. This often leads to missed opportunities for efficiency of energy and carbon emissions solutions. Analysis of the retrofit design options in buildings is a complex process, which requires high resolutions dynamic simulation models. Increasing the number and range of the parameters to be considered in the simulation quickly leads to hundreds of thousands of design options for a single building that cannot be evaluated manually. The expert system is an interactive computer based decision making tool, which allows the user to enter the type and range of design parameters to be investigated on a hand-held device, perform background dynamic simulations on a dedicated simulation server, search the solution space using multi-objective optimisation based on a genetic algorithm, and inform the user of the range of possible solutions and trade-offs, whilst fulfilling environmental, social and economic criteria for zero carbon design. Thus the expert system provides advanced design decision-making capability to a wider audience and thus facilitates the scaling up of zero carbon retrofit of buildings.

A method for eliminating simulation performance gap in buildings built form natural fibrous materials

Natural fibrous materials, such as lime-bonded hemp, are of particular interest for sustainable construction because of low embodied energy, carbon sequestration, a considerable smoothing out of internal temperature fluctuations and simultaneous regulation of relative humidity. Standard dynamic simulation models do not have a built-in capability to simulate the effect of such materials accurately, due to a specific material structure and combined heat and moisture transfer. This causes a considerable performance gap. This project develops and experimentally validates Fourier transform based transfer functions that enhance simulation results and enable accurate representation of the behaviour of buildings built from lime-bonded hemp.

Exploring the energy performance of hemcrete in affordable housing

This research investigates the energy performance of hemcrete houses based on a two-year research project of a variety of house types for affordable house developments at two sites. The factors affecting energy performance such as build quality, build method, air tightness and ventilation design are reviewed in the light of site experience of this innovative material. The project monitored initial build problems associated with the construction method when scaled up to deliver 71 houses. The impact of user behaviour and the variability in energy consumption are explored, with the analysis of the energy performance and thermal comfort of occupants.

Mitigating risks of event avalanches caused by climate change - lessons for sustainable urban design

Development of the human society and its technological, economic and financial systems, coupled with the population growth, has resulted in high interconnectivity between individual and corporate entities. These entities form networks of co-dependent agents which operate under critical connectivity. Climate change has brought about an increased frequency of extreme events, such as heat waves, droughts, floods and hurricanes, which can easily set off event avalanches that propagate throughout these networks. This work looks into event propagation characteristics of production and consumption networks and into how these characteristics can be designed and managed so as to prevent such extreme events from becoming event avalanches that sweep through the network and result in considerable human and material costs. It draws conclusions on how sustainability of an urban environment can be maintained at the time of occurrence of extreme events.

An emergence-based approach to designing

Emergence has been at the heart of nature's designs, producing living organisms on earth for several billion years. The work demonstrates how emergence-based systems thinking opens up the scope for exploration and a range of resultant design possibilities. The current design practice explores a small number of design options for making an optimum design solution, resulting in a large number of design possibilities unexplored and in opportunities missed. The approach based on emergence integrates the systems approach into design thinking, extending the boundaries of current design practice.

See ljubomirjankovic.com

Teaching specialisms

Programme DirectorMA Zero Carbon Architecture and Retrofit Design

See external collaborations

Qualifications
  • PhD Mechanical Engineering, University of Birmingham
  • BSc Mechanical Engineering, University of Belgrade
Memberships
  • Chartered Engineer (CEng)
  • Member of the Chartered Institution of Building Services Engineers (MCIBSE)
  • Fellow of the Institution of Analysts and Programmers (FIAP)
Teaching

MA Zero Carbon Architecture and Retrofit Design

Research

Ljubomir's research interests are:

  • Methods for designing zero carbon buildings
  • Nature inspired designs
  • Application of Complexity Science to emergence inspired design
  • Growing building designs from embryos
  • Creating design sketches that become ‘alive’ through computer simulation

Ljubomir's research is focused on two interconnected areas: zero carbon design research which combines computer simulation, multi-objective optimisation, and post occupancy monitoring; and complexity science based design research which includes emergence-based design using nature-inspired computation.

He is now working on automating zero carbon design using multi-objective optimisation, taking into consideration several million variations of values of design variables for a single design and bringing this to a wider audience through a web based interface. Part of his work in progress involves the creation of building forms using attractors.

He is looking into taking this work further and combining it with recursive grammars found in L-systems used for growing digital plants. This will lead to creating of axioms, in other words building embryos, and growing building designs through recursion. Another current work in progress involves emergence-based computational fluid dynamics.

After a few lines are drawn, such as barriers, heat sources and heat sinks, the program is started at a press of a button, and it gives instantaneous and interactive simulation of air flow. The work can be interpreted as drawings that become alive. This is a step towards changing the culture of architectural design, by making sketches that enable instantaneous evaluation of thermal performance of buildings.

Thesis

Solar Energy Monitoring, Control and Analysis in Buildings. The research was focused on experimental monitoring, dynamic simulation and post occupancy evaluation of Rowheath Passive Solar Village in Birmingham, developed by the Bournville Village Trust.

Publications

Books and Chapters in Books

Jankovic, L., ed. (2016) Zero Carbon Buildings Today and in the Future - Proceedings of a Conference held at Birmingham City University, 8-9 September 2016.

Jankovic, L. (2016) Simulation Analysis of a Simple Microprocessor Embedded Predictive Control Algorithm. In Proceedings of Building Simulation and Optimization 2016, Newcastle, 12th-14th September. IBPSA England.

Basurra, S. and Jankovic, L. (2016) Performance Comparison Between Knn and Nsga-Ii Algorithms as Calibration Approaches for Building Simulation Models.

Jankovic, L., Basurra, S. (2016) Taking a Passivhaus certified retrofit system onto scaled-up zero carbon trajectory, Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Huws, H., Jankovic, L. (2016) Multi Objective Simulations as an Economic Analysis Tool in Zero carbon retrofit. To be published in Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Bharadwaj, P., Jankovic, L., Basurra, S. (2016) Using Agent-Based-Modelling to develop a bottom-up approach for delivering long lasting zero carbon retrofit solutions. To be published in Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Basurra, S., Jankovic, L. (2016) Analysis of accuracy of calibrated simulation models before and after retrofit. To be published in Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Burnett, M., Jankovic, L. (2016) Using unit of energy as complementary currency for scaling up zero carbon retrofit. To be published in Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Christophers, J., Jankovic, L. (2016) Birmingham Zero Carbon House – Retrofit Beyond Passivhaus Standard. To be published in Proceedings of Zero Carbon Buildings Today and in the Future 2016, Birmingham City University.

Jankovic, L (2015) Emergence-Based Approach to Computational Fluid Dynamics. In Proceedings of IBPSA Building Simulation Conference 2015, Hyderabad, India, 7-9 December 2015.

Basurra, S., Jankovic, L., Huws, H. (2015) The Use of Optimisation in the Calibration of Building Simulation Models. In Proceedings of IBPSA Building Simulation Conference 2015, Hyderabad, India, 7-9 December 2015.

Basurra, S., Jankovic, L. (2015) Bringing Building Simulation to a Wider Audience - A Web Based Simulation and Optimisation System. In Proceedings of IBPSA Building Simulation Conference 2015, Hyderabad, India, 7-9 December 2015.

Caputo, S., Caserio, M., Coles, R., Jankovic, L. and Gaterell, M. R. (2015) Urban resilience: two diverging interpretations, Journal of Urbanism: International Research on Placemaking and Urban Sustainability, pp. 1–19.

Jankovic, L., ed. (2014) Zero Carbon Buildings Today and in the Future - Proceedings of a Conference held at Birmingham City University, 11-12 September 2014.

Jankovic, L. (2014) 'Energy and Comfort Modelling Tools'. In Sustainable Retrofitting of Commercial Buildings - Cool Climates, by S. Burton ed. Routledge. London and New York.

Huws, H. and Jankovic, L. (2014). "Birmingham Zero Carbon House - Making It Stay Zero Carbon Through Climate Change". In Jankovic, Ljubomir, Ed. (2014) Zero Carbon Buildings Today and in the Future - Proceedings of a conference held at Birmingham City University, 11-12 September 2014.

Huws, H. and Jankovic, L. (2014). "A Method for Zero Carbon Design Using Multi-objective Optimisation". In Jankovic, Ljubomir, Ed. (2014) Zero Carbon Buildings Today and in the Future - Proceedings of a conference held at Birmingham City University, 11-12 September 2014.

Basurra, S., Jankovic, L. and Zhang, Yi (2014). Development of a Web-based Expert System for Zero Carbon Design and Retrofit of Buildings. In Jankovic, Ljubomir, Ed. (2014) Zero Carbon Buildings Today and in the Future - Proceedings of a conference held at Birmingham City University, 11-12 September 2014.

Eberlin, C. and Jankovic, L. (2014). "Exploring the energy performance of hemcrete in affordable housing and future implications for carbon reduction in the housing sector". In Jankovic, Ljubomir, Ed. (2014) Zero Carbon Buildings Today and in the Future - Proceedings of a conference held at Birmingham City University, 11-12 September 2014.

Jankovic, L. (2014) "A method for eliminating simulation performance gap in buildings built form natural fibrous materials". In Liora Malki-Epsthein, Catalina Spataru, Ljiljana Marjanovic Halburd and Dejan Mumovic (Editors); 2014, "Proceedings of the 2014 Building Simulation and Optimization Conference"; 23-24 June 2014, UCL, London, UK.

Huws, H. and Jankovic, L. (2014) "Optimisation of zero carbon retrofit in the context of current and future climate". In Liora Malki-Epsthein, Catalina Spataru, Ljiljana Marjanovic Halburd and Dejan Mumovic (Editors); 2014, "Proceedings of the 2014 Building Simulation and Optimization Conference"; 23-24 June 2014, UCL, London, UK.

Jankovic. L. (2012) Designing Zero Carbon Buildings Using Dynamic Simulation Methods. Routledge. London and New York.

Lombardi, D. R. ... Jankovic, L. et al. (2012). Designing Resilient Cities - A Guide to good Practise. HIS BRE Press, Garston, Watford.

Articles in Journals

Caputo, S., Caserio, M.; Coles, R., Jankovic, L, Gaterell, M. (2013). A scenario-based analysis of building energy performance. Proceedings of the ICE - Urban Design and Planning, Volume 166, Issue 6, pp 326-348, December 2013, ICE Publishing.

Jankovic, L. (2012) 'An Emergence-based Approach to Designing'. The Design Journal, Volume 15 Issue 3, pp. 325-346, September 2012, London: Berg.

Caputo, S., Caserio, M., Coles, R., Jankovic, L. and Gaterell, M. (2012) 'Testing Energy Efficiency in Urban Regeneration'. Engineering Sustainability, Volume 165, Issue ES1, pp. 69-80, March 2012, ICE Publishing. 

Boyko, C. T., ... Jankovic, L., et al. (2012) 'Benchmarking Sustainability in Cities: The role of indicators and future scenarios'. Global Environmental Change. 01/2012; 22(1):245-254.

Hunt, D. V. L., ..., Jankovic, L., et al. (2012) 'Scenario Archetypes: Converging Rather than Diverging Themes'. Sustainability 4(4):740-772.

Peer-reviewed Conference Contributions

Huws, H. and Jankovic, L. (2014). "Birmingham Zero Carbon House - Making It Stay Zero Carbon Through Climate Change". In Proceedings of the 1st International Conference on Zero Carbon Buildings Today and in the Future, Birmingham City University, 11-12 September 2014.

Huws, H. and Jankovic, L.(2014). "A Method for Zero Carbon Design Using Multi-objective Optimisation". In Proceedings of the 1st International Conference on Zero Carbon Buildings Today and in the Future, Birmingham City University, 11-12 September 2014.

Basurra, S., Jankovic, L. and Zhang, Yi (2014). Development of an Expert System for Zero Carbon Design and Retrofit of Buildings. In Proceedings of the 1st International Conference on Zero Carbon Buildings Today and in the Future, Birmingham City University, 11-12 September 2014.

Eberlin, C. and Jankovic, L. (2014). "Exploring the energy performance of hemcrete in affordable housing and future implications for carbon reduction in the housing sector". In Proceedings of the 1st International Conference on Zero Carbon Buildings Today and in the Future, Birmingham City University, 11-12 September 2014.

Jankovic, L. (2014) "A method for eliminating simulation performance gap in buildings built form natural fibrous materials". In Liora Malki-Epsthein, Catalina Spataru, Ljiljana Marjanovic Halburd and Dejan Mumovic (Editors); 2014, "Proceedings of the 2014 Building Simulation and Optimization Conference"; 23-24 June 2014, UCL, London, UK.

Huws, H. and Jankovic, L. (2014) "Optimisation of zero carbon retrofit in the context of current and future climate". In Liora Malki-Epsthein, Catalina Spataru, Ljiljana Marjanovic Halburd and Dejan Mumovic (Editors); 2014, "Proceedings of the 2014 Building Simulation and Optimization Conference"; 23-24 June 2014, UCL, London, UK

Jankovic, L. and H. Huws (2013) 'Birmingham Zero Carbon House - Energy, Carbon and Economic Performance Analysis'. In Proceedings of Sustainable procurement in urban regeneration and renovation. 21-25 May 2013, Oulu, Finland.

Jankovic, L. (2013) A method for reducing simulation performance gap using Fourier filtering. IBPSA Building Simulation 2013 Conference, 25th - 30th August 2013, Chambery, France.

Huws, H., and Jankovic, L. (2013) 'Implications of Climate Change and occupant behaviour on future energy demand in a zero carbon house'. IBPSA Building Simulation 2013 Conference, 25th - 30th August 2013, Chambery, France.

Jankovic, L. and H. Huws (2012) 'Simulation experiments with Birmingham Zero Carbon House and optimisation in the context of climate change'. In proceedings of BSO 12 - Building Simulation and Optimization, 11 - 12 September 2012, University of Loughborough.

Jankovic, L. and H. Huws (2012) 'The Effect of Thermal Mass and Thermal Insulation on Retrofit Under Climate Change'. In Proceedings of Urban Sustainability and Resilience, 5 - 6 November 2012, University College London.

Jankovic. L. (2012) 'Mitigating Risks of Event Avalanches Caused by Climate Change - Lessons for Sustainable Urban Design'. In Gilbert, T. Kirkilionis, M. and Nicolis, G., eds. (2013) Proceedings of the European Conference on Complex Systems 2012, pp. 337-346, Springer, Dordrecht Heidelberg New York London.

Media/broadcast

Radio interviews for

  • BRMB on Fuel Poverty on 15 March 2012
  • BBC Radio WM on Fracking 15 January 2014
  • BBC Radio WM on Fracking 15 January 2014
Media Work

Professor Jankovic is one of the University’s dedicated team of trained media champions. He has taken part in a series of BBC radio interviews, making an argument against fracking - a process of hydraulic fracture of the shale, a sedimentary rock deep under the ground that contains natural gas, which would contribute to maintaining, rather than reducing, carbon emissions.

To arrange a media interview, please contact Birmingham City University Press Office on 0121 331 6738, 07967 271532,
email press@bcu.ac.uk or via Twitter @BCUPressOffice

Links and Social Media