Dynamic effect of balcony thermal bridges on the energy performance of a high-rise residential building in Canada

Baba, Fuad Mutasim; Ge, Hua

doi:10.1016/j.enbuild.2015.12.044

Cited by 31 publications

(20 citation statements)

References 6 publications

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“…Additionally, the savings were more pronounced in cold months, with thermal breaks reducing annual space heating energy consumption by between 0.3% and 1.9% in Chicago's climate ( Table 7). The magnitude of the predicted heating energy savings in all cases is lower than the previously predicted savings for multi-family buildings located in Canada estimated by Ge et al (5%-11%) [4], Hardock et al (7.3%) [5], and Baba et al (7%-8%) [13].…”

Section: Parametric Energy Study Results and Discussioncontrasting

confidence: 55%

“…Ge et al found that the inclusion of thermal breaks in balcony connections can potentially reduce annual heating energy consumption by 5-11% [4]. A follow-up simulation-based study by Baba et al for the same climate zone found that the inclusion of thermal breaks in balcony connections can potentially reduce annual heating energy consumption by 7-8% but increase annual cooling consumption by 4-12%, and that the effect will vary depending on the climate, window area, and adjacent wall types [13]. Similarly, a study by Hardock et al found that balcony thermal breaks could reduce annual building energy use by 7.3% in the Chicago climate [5].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Balcony Thermal Breaks on Building Thermal and Energy Performance: Field Experiments and Energy Simulations in Chicago, IL

2019

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A common envelope performance problem in buildings is thermal bridging through balcony slab connections, which can be improved with the use of commercially available thermal break products. Several prior studies have used simulation-based and/or hot box test apparatus approaches to quantify the likely effect of balcony thermal breaks on effective thermal resistance of building enclosures. However, in-situ measurements of thermal performance in real buildings remain limited to date. This study uses a combination of field measurements and models to investigate the effects of installing balcony thermal breaks on the interior surface temperatures, effective thermal resistance, and annual building energy consumption. For the field experiment, yearlong measurements were conducted on the 13th floor of a 14-story multi-family building in Chicago, IL, in which thermocouple sensors were embedded into eight balconies and their adjacent interior floor slabs just before concrete was poured to complete the construction. The eight balconies included four control balconies without thermal breaks and four thermally-broken balconies with a commercially available thermal break product installed. The experimental data were then combined with 2-D heat transfer modeling and whole building energy simulations to investigate the impacts of the thermal break product installation on the envelope thermal resistance and overall energy use in the case study building as well as in several more generic building designs with simpler geometries. The results demonstrate that although the balcony thermal breaks helped regulate interior slab temperatures and improved the effective thermal resistance of the curtain wall enclosure assembly by an estimated ~14% in the case study building, the predicted effect on annual energy consumption in all modeled building types was small (i.e., less than 2%). The results also highlight the importance of paying careful attention to envelope design details when using thermal break products and considering the use of thermal break products in combination with other energy efficiency strategies to achieve high performance enclosures.

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Section: Parametric Energy Study Results and Discussioncontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

The Effect of Balcony Thermal Breaks on Building Thermal and Energy Performance: Field Experiments and Energy Simulations in Chicago, IL

2019

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“…Hence, Baba (2018) explained that to avoid the formation of thermal bridges in the building envelope it is important to reduce energy consumption, of course not only increase the level of insulation and thermal mass required, but also the continuity of insulation. Thermal bridges in building envelopes are usually made by repetitive structural members and intersections between different building envelope components (Baba, Fuad, Hua Ge, 2016).…”

Section: Thermal Bridge Simulationmentioning

confidence: 99%

The Evaluation of Thermal Comfort using a BIM-based Thermal Bridge Simulation

Rahadian

Sulistiawan

2020

JARE

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Global warming has become an important issue today, caused by the increasing demand for energy and humans lifestyle. To reduce the impact, more architects started to respond regarding environmental issues. The concept of green architecture promotes to solving this problem. Natural ventilation is the one of the concept green architecture. This research tends to look at the aspect of Thermal Comfort in naturally ventilated mosque buildings through the Thermal Bridges strategy. Naturally ventilated building tend to have better indoor air quality (IAQ), but worse thermal comfort. Therefore, this research investigates the range of acceptable temperature and calculate by BIM thermal bridge simulation to achieve thermal comfort for naturally ventilated mosque building. The method of analysis conducted is quantitative based on direct measurement of weather data and existing comfort conditions in the field, calculations, and simulations using Building Information Modeling (BIM). Data was collected through a field survey in Itenas Mosque Building and were used to develop and validate then using the BIM thermal bridge model for simulation. The data collected from field survey and in situ environmental measurement such as air temperature, relative humidity, and wind velocity. The thermal comfort prediction model was developed from statistical analysis of the field survey data. Based on the result of thermal Bridge simulation using BIM software required exchange material of the existing building to achieve thermal comfort. Keyword-Thermal comfort, Building Information Modelling, Thermal Bridge Simulation

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“…Another study reported by Baba and Ge [34] investigated the effect of the balcony thermal bridge on the energy performance of a high-rise building in different locations in Canada. The researchers studied the impact of the balcony thermal bridge on the building thermal loads by using the equivalent U value method and a simulation tool, WUFI Plus program.…”

Section: Sun-shade Elementmentioning

confidence: 99%

Thermal bridges in building envelopes – An overview of impacts and solutions

Alhawari

Mukhopadhyaya

2018

IRASE

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Increasing building energy performance has become an obligatory objective in many countries. Thermal bridge is a major cause of poor energy performance, durability, and indoor air quality of buildings. This paper starts with a review of thermal bridges and their negative impacts on building energy efficiency. Based on published literatures, various types of building thermal bridges are discussed in this paper, including the most effective solutions to diminish their impacts. In addition, various numerical and experimental studies on the balcony thermal bridge are explored. Results show that among all types of thermal bridges, the exposed balcony slab produces the most challenging thermal bridging problem where an integrated thermal and structural design is required. Using low thermal conductivity materials in building construction could help in reducing the impact of thermal bridges. Finally, further investigations are needed to develop more innovative and effective solutions for the balcony thermal bridge.

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Dynamic effect of balcony thermal bridges on the energy performance of a high-rise residential building in Canada

Cited by 31 publications

References 6 publications

The Effect of Balcony Thermal Breaks on Building Thermal and Energy Performance: Field Experiments and Energy Simulations in Chicago, IL

The Effect of Balcony Thermal Breaks on Building Thermal and Energy Performance: Field Experiments and Energy Simulations in Chicago, IL

The Evaluation of Thermal Comfort using a BIM-based Thermal Bridge Simulation

Thermal bridges in building envelopes – An overview of impacts and solutions

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