On occupant-centric building performance metrics

O’Brien, William; Hensen, Jlm Jan; Carlucci, Salvatore; Hoes, P Pieter-Jan

doi:10.1016/j.buildenv.2017.06.028

Cited by 91 publications

(64 citation statements)

References 34 publications

(43 reference statements)

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“…• Energy use per person (Ghajarkhosravi et al 2020;Kampel et al 2016;O'Brien et al 2017;Sekki et al 2015; Airaksinen, & Saari 2017). • Energy use per person-hour (the total number of hours spent by all people in the building) (Dooley 2011;Fokaides, Polycarpou, & Kalogirou 2017;Lindberg et al 2018;Sekki et al 2015Sekki et al , 2017).…”

Section: Energy Metrics For the Efficient Use Of Spacementioning

confidence: 99%

“…For instance, a model using standard operating conditions informs about the technical properties of the building, whereas using real operating conditions is appropriate to assess the building performance considering, for example, occupancy conditions. Like Goldstein and Eley, others have emphasised the use of a package of purpose-built complementary metrics (Escrivá-Escrivá et al 2011;O'Brien et al 2017). O'Brien et al (2017 argue that different purposes, actors and decision situations call for metrics with different variables, scope (e.g.…”

Section: Energy Metrics For the Efficient Use Of Spacementioning

confidence: 99%

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Sharing indoor space: stakeholders’ perspectives and energy metrics

Francart

Höjer

Mjörnell

et al. 2020

Buildings and Cities

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The sharing of indoor space can improve space and energy efficiency. The drivers and barriers to space-sharing initiatives are investigated from the perspectives of building users and building sector practitioners, based on interviews and a workshop. The role of energy performance metrics in promoting space efficiency is further analysed through a literature review. From the users' perspective, space sharing can be understood through the interplay between tangible aspects (e.g. concrete benefits derived from sharing), organisational aspects (e.g. common decision processes and conflict resolution) and social aspects (e.g. group identity and consensus on appropriate behaviours). From the perspective of architects and property owners, shareable spaces require features such as flexibility and multifunctionality. The design of such spaces is limited by regulatory issues (e.g. building regulations poorly accommodate shared facilities) and business-related issues. One such issue is that building performance metrics normalised based on floor area do not incentivise the efficient use of space. A review of complementary metrics is provided, covering parameters such as number of users, layout, time of use, etc. Each metric serves a particular purpose; therefore, a set of complementary metrics can be used to support decisions at different phases of the building's life cycle. Practice relevance Improving space efficiency (e.g. by sharing indoor space) is a key strategy to meet simultaneously the future demand for facilities in cities and fulfil environmental objectives such as a reduction of climate change impact in the building sector. A clearer understanding of the specificities of space sharing is provided from the perspectives of building users and practitioners. This will assist practitioners to understand the needs of other stakeholders. Regulatory and business-related barriers to space-sharing initiatives are highlighted as a first step towards overcoming these barriers. Guidance is provided on complementary energy performance metrics appropriate for space efficiency. These metrics can be used to support various decisions during the different stages of a building's life cycle.

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Section: Energy Metrics For the Efficient Use Of Spacementioning

confidence: 99%

Section: Energy Metrics For the Efficient Use Of Spacementioning

confidence: 99%

Sharing indoor space: stakeholders’ perspectives and energy metrics

Francart

Höjer

Mjörnell

et al. 2020

Buildings and Cities

View full text Add to dashboard Cite

show abstract

“…Others https://doi.org/10.1016/j.buildenv.2018.08.038 http://escholarship.org/uc/item/81t2t9vd have focused on the impact of daylight and view through windows on occupants' visual comfort and well-being [34][35][36][37]. However, only a few studies have proposed guidelines or examples for developing comfort-based, occupant-centric building performance metrics [38,39]. These are either broad concept level work (i.e., the metrics have not reached maturity to be integrated into the design process) or limited to two indoor environmental quality metrics only (e.g., visual and thermal aspects).…”

Section: Integrated Effect Of Indoor Environmental Quality and Currenmentioning

confidence: 99%

Ventilation, thermal and luminous autonomy metrics for an integrated design process

Schiavon

Brager

et al. 2018

Building and Environment

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This paper proposes and evaluates an integrated workflow that simultaneously uses ventilation, thermal, and luminous autonomy for the assessment of passive design strategies, introducing a potential way to integrate these three metrics in the design process. We developed a new metric, ventilation autonomy, and assessed the advantages and limitations of applying the three autonomy metrics with building performance simulations in two climates. We developed a novel visualization to display the hourly and yearly environmental autonomy values. The results show that when we consider the three metrics together, designers may have contradicting design directions if trying to both mitigate the solar radiation and to utilize natural ventilation. The visualizations that categorize nine combinations of thermal and visual comfort along with ventilation autonomy are effective in showing the trade-offs among ventilation, thermal, and visual performance.

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“…Even though significant progress has been made in quantifying these primary drivers, more emphasis on energy related occupant behavior in buildings is needed to develop reliable and standardized methods [5,6]. Neglecting this aspect can lead to severe miscalculations and inaccurate conclusions about the energy performance of the building stock [7]. Occupants' interaction with building systems affects significantly the total energy use of buildings.…”

Section: According To the International Energy Agency In The Energy Bmentioning

confidence: 99%

Estimation of temperature setpoints and heat transfer coefficients among residential buildings in Denmark based on smart meter data

Gianniou

Reinhart

Hsu

et al. 2018

Building and Environment

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Thermal comfort preferences of occupants and their interactions with building systems are top influential factors of residential space heating demand. Consequently, housing stock models are sensitive to assumptions made on heating temperatures. This study proposes a heat balance approach, inspired by the classical degree-day method, applied to an extensive urban dataset. The goal of this analysis is to determine heterogeneous characteristics, such as temperature setpoints of heating systems and thermal envelope characteristics from an overall population of residential buildings. Measured energy data are utilized for the purpose of the study from the city of Aarhus, Denmark, where the energy usage for heating of circa 14,000 households was monitored over time via smart meters. These data are combined with actual weather data as well as data extracted by a national building database. Using linear regression and heat balance models, temperature setpoints for the whole dataset are determined with a median and average of 19 o C and 19.1 o C, respectively. Furthermore, building related characteristics such as thermal and ventilation losses per building and overall heat transfer coefficients are extracted at urban scale. The reliability of the method over its complexity is discussed with regards to the big sample that has been applied to. In general, the overall performance of the approach is satisfactory achieving a coefficient of determination with an average of 0.8, and is found to be in line with previous findings, considering 2 also the high uncertainty associated with building-related input parameters. The extracted setpoint distribution should be transferrable across Scandinavia.

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On occupant-centric building performance metrics

Cited by 91 publications

References 34 publications

Sharing indoor space: stakeholders’ perspectives and energy metrics

Sharing indoor space: stakeholders’ perspectives and energy metrics

Ventilation, thermal and luminous autonomy metrics for an integrated design process

Estimation of temperature setpoints and heat transfer coefficients among residential buildings in Denmark based on smart meter data

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