Are current design processes and policies delivering comfortable low carbon buildings?

Tuohy, Paul Gerard; Murphy, Gavin Bruce

doi:10.1080/00038628.2014.975779

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…The type 2 naturally ventilated and locally cooled office buildings are common, if these were to be converted or replaced by fully serviced buildings then it would appear that this would greatly increase the overall energy demand of the office sector (more than 2x). Widespread adoption of 'advanced' building standards from elsewhere should be carefully evaluated against existing actual energy use rather than the reference building approach commonly used in those standards [38], [39].…”

Section: Discussionmentioning

confidence: 99%

“…Measured building performance data is also of key importance in addressing the potential 'performance gap' between intended and actual building performance which has been internationally recognised [36], [37], [38], [39]. It would appear to be important in the Egyptian context that performance feedback is integrated in future policy to avoid the performance gaps seen elsewhere.…”

Section: Introductionmentioning

confidence: 99%

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The energy and indoor environmental performance of Egyptian offices: Parameter analysis and future policy

Elharidi

Tuohy

Teamah

2018

Energy and Buildings

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Buildings are a significant contributor to the rapidly increasing electricity demand in Egypt which is straining the existing supply network causing economic and social impacts. There are current initiatives aimed at improved building performance including adoption of international standards. The performance of existing Egyptian buildings is not well understood making the impact of these international standards uncertain. This paper provides insight into performance of current Egyptian office buildings through a multi-building energy survey and a detailed case study. The most common office type in the survey has natural ventilation and local cooling. A process to capture observed performance in a representative model and input parameter set is presented. The model is used to investigate performance impacts of parameters including: location, weather, building envelope, intensity of occupancy, behaviour, and installed systems including the HVAC strategy. HVAC strategy was identified as the most significant factor. Typical Egyptian offices with natural ventilation and local cooling systems under personal control have electricity demand less than 50% of centrally serviced buildings. System efficiencies (HVAC, lights, equipment) and occupant behaviour (e.g. use of systems, temperatures) were also identified as significant factors, each with potential of around 30% saving compared to current typical offices. Possible policy measures to promote energy efficient systems and energy conscious behaviour are proposed which together can reduce the energy demand of typical offices by 50%. Trade-offs between energy use and indoor environmental quality (IEQ) are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The energy and indoor environmental performance of Egyptian offices: Parameter analysis and future policy

Elharidi

Tuohy

Teamah

2018

Energy and Buildings

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“…It should be noted that it is always vitally important to continue to verify actual energy and indoor environmental performance of buildings, especially those with advanced technology options, as performance gaps have been found to be common and not yet fully addressed by the latest international initiatives [58], [59].…”

Section: Discussionmentioning

confidence: 99%

Energy and indoor environmental performance of typical Egyptian offices: Survey, baseline model and uncertainties

Elharidi¹,

Tuohy²,

Teamah

et al. 2017

Energy and Buildings

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This version is available at https://strathprints.strath.ac.uk/58672/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the ABSTRACTEgyptian electricity demands have increased in recent years and are projected to grow further with significant economic and social impacts. Recently, mandatory and voluntary building codes based on international standards have been increasingly adopted. The performance of existing Egyptian buildings is not well understood making the impact of these new codes uncertain. This paper aims to provide insights into existing Egyptian building performance, and elaborate a process for developing a representative model to assist in future policy. The work presented is for office buildings but intended to be widely replicable. An energy survey was carried out for 59 Egyptian offices, categorised by building service type, it was observed that energy use increases as building services increase, and existing Egyptian offices use less energy than benchmarks. A more detailed investigation for a case study office was carried out, to inform detailed model calibration. This provided insight into energy use, thermal comfort and environmental conditions, and revealed high variability in behaviours. A calibrated model was created for the case study office, then a baseline model and input parameter sets created to represent generalised performance. Future uses including assessment of the impact of codes are discussed, and further replication potentials highlighted.

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“…In the partner paper by the same authors it was highlighted that there are performance gaps that must be addressed in order to avoid overheating and deliver comfortable low carbon buildings (Tuohy and Murphy 2015). Here it is recognised that the buildings industry in the UK and globally is going through a period of rapid change, there are many policy and industry initiatives developed to improve building performance and building industry processes.…”

Section: Introduction: a Selection Of Current Building Industry Initimentioning

confidence: 99%

Closing the gap in building performance: learning from BIM benchmark industries

Tuohy

Murphy

2014

Architectural Science Review

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It is clear that current industry process needs to improve in order to routinely deliver comfortable low carbon buildings. Overheating in buildings designed to be low energy is one of the key symptoms of current problems. Many initiatives aim to improve building performance and the industry process. A selection are reviewed including the EU Energy Performance of Buildings Directive (EPBD); the Green Star, LEED, BREEAM and NABERS rating schemes; the PH standard; the Soft Landings process and Building Information Modelling (BIM). The BIM approach is being actively promoted based on the assertion that buildings industry process has stagnated compared to other industries suggested as productivity benchmarks such as the electronics industry. This study highlights the potential role that could be played by Building Information Modelling (BIM) as a framework to address the performance gaps, and suggests that processes from the BIM benchmark industries should be investigated for potential adoption. The organisational context and processes of the electronics industry are described and it is proposed that they could be usefully adapted to reduce the scale and impacts of the building industry performance gap. Key conclusions are that public domain performance data is important and that the adoption of a quality systems approach will be required to deliver the intended performance in practice, eliminate overheating and avoid excess energy use.

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Are current design processes and policies delivering comfortable low carbon buildings?

Cited by 25 publications

References 9 publications

The energy and indoor environmental performance of Egyptian offices: Parameter analysis and future policy

The energy and indoor environmental performance of Egyptian offices: Parameter analysis and future policy

Energy and indoor environmental performance of typical Egyptian offices: Survey, baseline model and uncertainties

Closing the gap in building performance: learning from BIM benchmark industries

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