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IEQ Lab
Research_

Architectural Science

Using science to understand and improve the built environment
We are a group of researchers dedicated to understanding the effect of buildings not only on their internal and external environments, but also their occupants.

The objective of our research is to understand and manage the issues that impact upon the performance of a building. These issues include Indoor Environmental Quality (daylight and electric lighting, acoustics, thermal environment, indoor air quality, occupant comfort, health, wellbeing and productivity), building services (heating, ventilation and air-conditioning, intelligent building control systems), facades (envelope), site conditions (climate and microclimate), and building life cycle sustainability.

We do this by undertaking innovative research in our three research labs. These are:

Our world-renowned researchers have attracted talent from across Australia and around the world, equipping them with state-of-the-art research infrastructure to create dynamic, high-impact research teams focused on the grand challenges for our built environments in the 21st century. 

Engagement

We collaborate with industry, government, and various international organisations to develop our innovative research solutions and apply them in the design and operation of buildings.

Our industry and government partners include:

Our international partner organisations include:

Funded projects

Funding source: 2016-18, Australian Research Council (ARC) DP160103978

Researchers: Professor Richard de Dear, Dr Densil Cabrera, Dr Jungsoo Kim

Without internal walls, open-plan offices are designed to make people interact more frequently and therefore be more collaborative and productive. Yet there is a high level of dissatisfaction with open-plan layout because of frequent distraction by background speech from co-workers, which has been shown to significantly decrease work performance and productivity. This project aims to better understand how irrelevant speech in open-plan offices affects the occupants’ cognitive performance and creates annoyance. The intended outcomes are the development of powerful new tools to measure, model and predict the degree of speech distraction at work, enabling establishment of new international standards.

Funding source: 2012-14, National Research Foundation of Korea

Researchers: Professor Richard de Dear (University of Sydney), Professor Chungyoon Chun (Yonsei University), Professor Ed Arens (UC Berkeley)

Funding source: 2011-14, Australian Research Council (ARC) Linkage LP110200328

Researchers: Professor Richard de Dear (University of Sydney), Dr Christhina Candido (University of Sydney), Mr Craig Roussac, Dr Jungsoo Kim, Dr Thomas Parkinson, Ms Leena Thomas (UTS)

Industry partners: Arup, Brookfield Multiplex, the GPT Group, Investa Property Group, Stockland Property Management. In-kind support: National Australian Built Environment Rating System (NABERS)

Post Occupancy Evaluation (POE) generates feedback on the performance of buildings from their occupants’ perspectives. As an indoor environmental quality assurance process, POE accelerates diffusion of best design practices and minimises bad design recidivism. The Building Occupants Survey System for Australia – BOSSA – will be a POE system for Australia’s office buildings. As the BOSSA database grows with each additional building surveyed during this project, it will underpin an ongoing program of architectural science research aimed at improving occupant health, comfort and productivity outcomes from sustainable office buildings.

Funding source: 2011-16, Ministry of New and Renewable Energy, Government of India, Climate Works Foundation and Shakti Sustainable Energy Foundation

Researchers: Professor Richard de Dear (University of Sydney), Ms Leena Thomas (UTS), Professor Rajan Rawal (CEPT University)

Our researchers

Publications

Refereed journal articles

Book chapters

Books

Refereed journal articles

Refereed journal articles

Refereed conference papers

  • de Dear, R., Parkinson, T., Parkinson, A. “Pervasive and real-time Indoor Environmental Quality monitors”. In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Nathwani, A., de Dear, R.“Comfort Preferences for Passive Chilled Beams Vs Variable Air Volume Vs under Floor Air Distribution”. In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Sadeghi, M., de Dear, R., Samali, B., Wood,G. “Application of Wind Towers in the Australian Residential Context – A Wind Tunnel
    Assessment of Thermal Comfort Performance”. In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Zhang, F., de Dear, R., Cândido, C. M. “Thermal comfort during temperature cycles induced by direct load control events” In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Parkinson, T., de Dear, R. “Thermal pleasure and alliesthesia in the built environment”. In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Kim, J., & De Dear, R. , Parkinson, T., Candido, C. M., Cooper, P., Zhenjun, M., Saman, W. "Field Study of Air Conditioning and Thermal Comfort in Residential Buildings" In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK. 
  • Cândido, C. M., Zhang, F., de Dear, R.“Impact of workspace layout on occupant satisfaction, perceived health and productivity ” In: 9th International Windsor Conference, Cumberland Lodge, Windsor, UK.


Book chapters

Refereed journal articles

Refereed journal articles

Refereed conference papers

  • de Dear, R., Kim, J., Candido, C., Deuble, M. (2014). Summertime thermal comfort in Australian school classrooms.8th Windsor Conference: Counting the Cost of Comfort in a Changing World, Windsor, UK: NCEUB Network for Comfort and Energy Use in Buildings.
  • Kim, J., de Dear, R. (2014). The effects of contextual differences on office workers' perception of indoor environment. Indoor Air 2014, The 13th International Conference on Indoor Air Quality and Climate, Hong Kong: The University of Hong Kong.
  • Zhang, F., de Dear, R., Candido, C. (2014). Thermal Comfort during Direct Load Control Events in University Lecture Theatres. Indoor Air 2014, The 13th International Conference on Indoor Air Quality and Climate, Hong Kong: The University of Hong Kong.
  • de Vecchi, R., Sorgato, M., Pacheco, M., Candido, C., Lamberts, R. (2014). Application of the adaptive model proposed by ASHRAE 55 in the Brazilian climate context: raising some issues. 8th Windsor Conference: Counting the Cost of Comfort in a Changing World, Windsor, UK: NCEUB Network for Comfort and Energy Use in Buildings.
  • Cabrera, D., Jimenez, D., Martens, W. (2014). Audio and Acoustical Response Analysis Environment (AARAE): a tool to support education and research in acoustics. 43rd International Congress on Noise Control Engineering, Toowong, QLD: The Australian Acoustical Society.
  • Opsata, A., Cabrera, D., Yadav, M. (2014). Influence of time-varying talker directivity on the calculation of speech transmission index from speech in a room acoustical context. 43rd International Congress on Noise Control Engineering, Toowong, QLD: The Australian Acoustical Society.
  • Martens, W. (2014). Display of three-dimensional virtual acoustic sound fields for human listeners: Value of discrete multichannel simulation. 21st International Congress on Sound and Vibration, ICSV14, Beijing: Acoustical Society of China.
  • Kang, D., Choi, J., Kim, Y., Martens, W. (2014). Distance perception of a nearby virtual sound source reproduced by a linear loudspeaker array. 43rd International Congress on Noise Control Engineering, Toowong, QLD: The Australian Acoustical Society.
  • Martens, W. (2014). Evidence-based design of individually customized binaural technology: Iterative perceptual validation of a virtual auditory display system. 21st International Congress on Sound and Vibration, ICSV14, Beijing: Acoustical Society of China.
  • Taylor, R., Martens, W. (2014). Hyper-compression in Music Production: Listener Preferences on Dynamic Range Reduction. 136th Audio Engineering Society Convention, New York: Audio Engineering Society.
  • Manor, E., Martens, W. (2014). Prediction of virtual sound source elevation improved by including input source spectral shape in the prediction equation. 43rd International Congress on Noise Control Engineering, Toowong, QLD: The Australian Acoustical Society.


Book chapters

  • Reinhardt, D., Cabrera, D., Niemela, M., Ulacco, G., Jung, A. (2014). TriVoc: Robotic Manufacturing for Affecting Sound Through Complex Curved Geometries. In Wes McGee, Monica Ponce de Leon (Eds.), Robotic Fabrication in Architecture, Art and Design 2014, (pp. 163-180). Cham, Switzerland: Springer.

Refereed journal articles


Refereed conference papers

  • Parkinson, T.; de Dear, R.; Candido, C. M. (2013) Comfort Chimp: a Multi-Platform IEQ Questionnaire Development Environment. In: 11thREHVA World Congress CLIMA 2013, 2013, Praga. 11th REHVA World Congress CLIMA 2013, 2013.
  • Kim, J. ; Candido, C. M. ; de Dear, R.; Deuble, M. (2013) Thermal Comfort in a Large Property Portfolio: What can we do before surrendering to AC?. In: 11th REHVA World Congress CLIMA 2013, 2013, Praga. 11th REHVA World Congress CLIMA 2013, 2013.
  • Candido, C. M. ; de Dear, Richard ; Thomas, L. ; Kim, J. (2013) Introducing BOSSA: The Building Occupants Survey System Australia. In: The Future of HVAC 2013, 2013, Melbourne. The Future of HVAC 2013, 2013.
  • Saman, W. ; de Dear, R.; Soebarto, V. ; Boland, J. ; Belusko, M. ; Bennetts, H. ; Ridley, B. ; Candido, C. M. ; Deuble, M. (2013) The impact of climate change on external and internal design conditions for air conditioning loads estimation. In: The Future of HVAC 2013, 2013, Melbourne. The Future of HVAC 2013, 2013.
  • Cabrera, D., L. Miranda, R. Crow, and R. de Dear. (2013) "Audio and Acoustic Design of the University of Sydney's Indoor Environmental Quality Laboratory." In: Proceedings of Meetings on Acoustics19 , art. no. 015016.
  • McKinnon-Bassett, M., Martens, W. (2013). Experimental Comparison of Two Versions of a Technical Ear Training Program: Transfer of Training on Tone Color Identification to a Dissimilarity-Rating Task. 50th International Conference of the Audio Engineering Society: Audio Education, New York: Audio Engineering Society.
  • Martens, W., Reinhardt, D. (2013). The Raw and the Cooked in Architectural Acoustics. 21st International Congress on Acoustics 2013, New York: Acoustical Society of America.
  • Ryan, T., King, R., Braasch, J., Martens, W. (2013). The effects of temporal alignment of loudspeaker array elements on speech intelligibility. 134th Audio Engineering Society Convention, Red Hook, NY: Curran Associates, Inc.
  • Ryan, T., King, R., Braasch, J., Martens, W. (2013). The effectiveness of Speech Transmission Index (STI) in accounting for the effects of multiple arrivals. 134th Audio Engineering Society Convention, Red Hook, NY: Curran Associates, Inc.
  • Reinhardt, D., Martens, W., Miranda Jofre, L. (2013). Sonic Domes: Solving acoustic performance of curved surfaces by interfacing parametric design, structural engineering and acoustic analysis. Open Systems: 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013), Singapore: National University of Singapore.
  • Dash, I., Power, T., Cabrera, D. (2013). The relation between preferred TV programme loudness, screen size and display format. 134th Audio Engineering Society Convention, Red Hook, NY: Curran Associates, Inc.
  • Yadav, M., Cabrera, D., Lee, D., Miranda Jofre, L., Martens, W. (2013). The regulation of voice levels in various room acoustic conditions. Acoustics 2013 Victor Harbor: Science, Technology and Amenity, Victor Harbor, South Australia: Australian Acoustical Society, South Australian Division.
  • Yadav, M., Cabrera, D., Miranda Jofre, L., Martens, W., Lee, D., Collins, R. (2013). Investigating auditory room size perception with autophonic stimuli. 135th Audio Engineering Society Convention, New York: Audio Engineering Society.
  • Jimenez, D., Vandenberg, N., Miranda Jofre, L., Yadav, M., Cabrera, D. (2013). Auralisation of stage acoustics for large ensembles. Acoustics 2013 Victor Harbor: Science, Technology and Amenity, Victor Harbor, South Australia: Australian Acoustical Society, South Australian Division.
  • Cabrera, D., Miranda Jofre, L., Crow, R., de Dear, R. (2013). Audio and Acoustic design of the University of Sydney's Indoor Environmental Quality Laboratory. 21st International Congress on Acoustics 2013, New York: Acoustical Society of America.
  • Miranda Jofre, L., Cabrera, D., Stewart, K. (2013). A concentric compact spherical microphone and loudspeaker array for acoustical measurements. 135th Audio Engineering Society Convention, New York: Audio Engineering Society.
  • Ferguson, S., Schubert, E., Lee, D., Cabrera, D., McPherson, G. (2013). A comparison between continuous categorical emotion responses and stimulus loudness parameters. 4th International Conference on Information, Intelligence, Systems and Applications (IISA 2013), Piscataway, New Jersey: (IEEE) Institute of Electrical and Electronics Engineers. 


Research report

  • Saman, W. ; Boland, J. ; Pullen, S. ; de Dear, R. ; Soebarto, V. ; Miller, W. ; Pocock, B. ; Belusko, M. ; Bruno, F. ; Whaley, D. ; Pockett, J. ; Bennetts, H. ; Ridley, B. ; Palmer, J. ; Zuo, J. ; Ma, T. ; Chileshe, N. ; Skinner, N. ; Chapman, J. ; Vujinovic, N. ; Walsh, M. ; Candido, C. M. ; Deuble, M. (2013) A framework for adaptation of Australian households to heat waves. South Australia: National Climate Change Adaptation Research Facility, 2013 (Research Report).
  • Lamberts, R., Candido, C., de Dear, R., de Vechi, R. (2012) Towards a Brazilian Standard on Thermal Comfort.

Refereed journal articles

  • Roussac, C., Bright, S. (2012) Improving environmental performance through innovative commercial leasing: An Australian case study. International Journal of Law in the Built Environment, 4(1) , pp. 6-22.
  • Roussac, C., Bright, S. (2012) The exacting science of ESG analysis. Investment Magazine, 86 , pp. 30-31.
  • De Dear, R. (2012) “Editorial: Did someone set the air on Artic? The widespread problem of over-air-conditioning”. HVAC&R Research, 18(6), 1-2.
  • Jendritzky, G., de Dear, R., & Havenith, G. (2012) “UTCI-Why another thermal index?” International Journal of Biometeorology, 56(3): 421-428.
  • Cândido, C. and R. de Dear (2012) From thermal boredom to thermal pleasure: A brief literature review. Ambiente Constru'do, V. 12, pp.81-90.
  • Cândido, C., R. de Dear, and M. Ohba (2012) “Effects of artificially induced heat acclimatization on subjects' thermal and air movement preferences”. Building and Environment, V. 49 (1), pp. 251-258.
  • Kim, J and R. de Dear (2012) "Impact of different building ventilation modes on occupant expectations of the main IEQ factors". Building and Environment, V. 57, pp. 184-193.
  • Kim, J and R. de Dear (2012) “Nonlinear relationships between individual IEQ factors and overall workspace satisfaction”. Building and Environment, V. 49, pp. 33-40.
  • Deuble, M. and R. de Dear (2012) “Green occupants for green buildings: The Missing link?” Building and Environment. V. 56, pp.21-27
  • Deuble, M. and R. de Dear (2012) “Mixed-mode buildings: A double standard in occupants’ comfort expectations”. Building and Environment, V.43, pp.53-60.
  • Psikuta, A., D. Fiala, G. Laschewski, G. Jendritzky, M. Richards, K. Błazejczyk, I. Mekjavič, H. Rintamäki, R. de Dear, and G. Havenith. (2012) “Validation of the fiala multi-node thermophysiological model for UTCI application”. International Journal of Biometeorology , 56(3): 443-460.


Refereed conference papers

  • Kim, J., & De Dear, R. Identifying substantive IEQ factors for efficient building management. In: The 46th Annual Conference of the Architectural Science Association (ANZAScA) 2012, Gold Coast, Australia.
  • Candido, C., De Dear, R., Thomas, L., Kim, J., & Parkinson, T. BOSSA - Building Occupants Survey System Australia. In: The 46th Annual Conference of the Architectural Science Association (ANZAScA) 2012, Gold Coast, Australia.
  • Kim, J., & De Dear, R. "How does occupant perception on specific IEQ factors affect overall satisfaction?" In: 7th Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Nakayoshi, M., Shi, R., Kanda, M., & De Dear, R. “Investigation of outdoor thermal physiology along subjects' pathway”. In: 8th International Conference on Urban Climates, Dublin, Ireland.
  • Nakayoshi, M., Shi, R., Kanda, M., & De Dear, R. “Development of wearable measurement system for thermal physiology”. In: 8th International Conference on Urban Climates, Dublin, Ireland.
  • de Dear, R., Cândido, C. M. “An Adaptive Thermal Comfort Policy for a Geographically Dispersed Property Portfolio; Deciding When and Where to Air-Condition in a Warm Climate Zone”. In: 7th Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Parkinson, T., de Dear, R., Cândido, C. M. “Perception of Transient Thermal Environments: Pleasure and Alliesthesia”. In: 7th Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Nathwani, A., de Dear, R., Cândido, C. M. “The Missing Link – Next Generation IEQ LAB with Ultimate Flexibility”. In: 7th Windsor Conference, Cumberland Lodge, Windsor, UK.
  • Vecchi, R., Cândido, C. M., Lamberts, R. “Thermal history and its influence on occupants’ thermal acceptability and cooling preferences in warm-humid climates: a new desire for comfort?” In: 7th Windsor Conference, Cumberland Lodge, Windsor, UK.


Book chapters

  • Cândido, C. M. (2012) "Retrofitting comfort and indoor environmental quality". In: Richard Hyde; Nathan Groenhout; Francis Barram and Ken Yeang. (Org.). Sustainable Retrofitting of Commercial Buildings: Warm Climates. 1ed.: Routledge, 2012.
  • Roussac, C. (2012) "Monitoring building performance". In: Richard Hyde; Nathan Groenhout; Francis Barram and Ken Yeang. (Org.). Sustainable Retrofitting of Commercial Buildings: Warm Climates. 1ed.: Routledge, 2012.

Director

Richard de Dear
Professor Richard de Dear
"With a global trend towards high-density cities, the impact of buildings and urban precincts on both external and internal environments is critical. Working with air quality, thermal comfort, acoustics and lighting, our IEQ (indoor environment quality) research focuses on driving design innovation, optimising energy efficiency and maximising human wellbeing, performance and comfort".
Visit Richard de Dear's academic profile