The Effect of Thermal Mass on Annual Heat Load and Thermal Comfort in Cold Climate Construction

Stevens, Vanessa; Kotol, Martin; Grunau, Bruno; Craven, Colin

doi:10.1061/(asce)cr.1943-5495.0000092

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…Electricity is the main energy used in their daily activities, while in the north, CO2 generated from heating power and raw coal consumption accounts for a considerable proportion. Because heating power and raw coal are important heating energy sources in the cold and severe cold zones, building heat load plays a dominant role, and the heating period is long [50]. For batch processing and convenient computation, two programs calculating the NCI and NVCI, respectively, were developed with Python and ArcGIS.…”

Section: Becce Of Pboc Buildingsmentioning

confidence: 99%

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Wang

Zhang

Lin

et al. 2021

IJGI

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Continuous growth of building energy consumption CO2 emission (BECCE) threatens urban sustainable development. Urban form is an important factor affecting BECCE. Compactness is a significant urban morphological characteristic. There is currently a lack of research on the effect of urban three-dimensional (3D) compactness on BECCE. To clarify the research value of 3D compactness, we investigated whether 3D compactness has a stronger impact on BECCE than two-dimensional (2D) compactness. A total of 288 buildings of the People’s Bank of China (PBOC) were divided into 5 zones according to building climate demarcation. As BECCE is affected mainly by four aspects (socioeconomic condition, building features, macroclimate, and urban form), the BECCE driven by urban form (BECCE-f) in each zone was calculated firstly using the partial least square regression model. Normalized compactness index (NCI) and normalized vertical compactness index (NVCI) were calculated with Python to quantify urban 2D and 3D compactness within a 1 km buffer of PBOC buildings. The mean NCI and NVCI values of each zone were adopted as 2D and 3D compactness of this zone. Gray correlation analysis of the five zones showed that the connection between the NVCI and BECCE-f is stronger than that between NCI and BECCE-f. Based on this, we believe that the emphasis of later research should be shifted to urban 3D form, not just 2D elements. 3D form can describe the real urban form in a more accurate and detailed manner. Emphasizing 3D morphological characteristics in studies of the relationship between urban form and building energy performance is more meaningful and valuable than only considering 2D characteristics. The impact mechanism of urban form on BECCE-f should also be analyzed from the perspective of 3D form. This study also provides beneficial solutions to building energy saving and low-carbon building construction.

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Section: Becce Of Pboc Buildingsmentioning

confidence: 99%

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Wang

Zhang

Lin

et al. 2021

IJGI

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“…Although such energy use benefits of using thermal storage of heavyweight structures is acknowledged by previous studies in warmer climates, net influences in temperate and cold climate conditions require further attention [45]. Some recent studies have suggested that in colder climates in particular, disadvantages may be pronounced to result in increased net energy consumption [45,46].…”

Section: Building Occupancy and Storage Lagmentioning

confidence: 99%

Simulation pathway for estimating heat island influence on urban/suburban building space-conditioning loads and response to facade material changes

Gunawardena

Kershaw

Steemers

2019

Building and Environment

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Environmental thermal loading on urban buildings is expected to increase owing to the combined influence of a warming climate, increasing frequency and severity of extreme heat events, and the urban heat island (UHI) effect. This paper presents how a computationally efficient estimation pathway could be utilised to understand UHI influence on building energy simulations. As an example, this is examined by considering UHI influence on the space-conditioning loads of office buildings within urban and suburban conditions, and how the trend of replacing heavyweight facades with lightweight alternatives could affect their surrounding microclimates, as well as building energy use. The paper addresses this through simulations of street canyons based on the urban Moorgate and suburban Wimbledon areas of London. Results show that with all scenarios including the UHI within a dynamic thermal simulation presents between 2.5 to 9.6 % net increase in annual space-conditioning. The study also demonstrates that the trend in urban centres to replace heavyweight facades with lightweight insulated alternatives increases space-conditioning loads, which in turn increases UHI intensity to create a warming feedback loop. The study therefore stresses the significance of including microclimate loading from the UHI in estimating urban and suburban energy use, and the combined simulation approach is presented as a computationally efficient pathway for use by built environment designers.

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“…Storage of heat in the ground during periods of excess heat or energy (summer) for use during heat deficits (winter) is the scheme. Vertically oriented boreholes have also been employed to such ends [2][3][4][5][6][7][8][9][10][11]. However, they require direct access from above the storage site, thus limiting storage sites to those that are free of built environments or ecologically sensitive areas.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of a Seasonal Thermal Energy Storage System with 3-Dimensional Horizontally Directed Boreholes

Beaufait

Villasmil

Ammann

et al. 2022

Thermo

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Geothermal energy storage provides opportunities to store renewable energy underground during summer for utilization in winter. Vertically oriented systems have been the standard when employing boreholes as the means to charge and discharge the underground. Horizontally oriented borehole storage systems provide an application range with specific advantages over vertically oriented systems. They are not limited to the surface requirements needed for installation with vertical systems and have the potential to limit storage losses. Horizontal systems can be incorporated into the built environment and utilize underground storage sites below existing infrastructure. An experimental study examines configurations using a mix of renewable energy (photovoltaic panels) and grid energy to charge a storage system during summer for use during winter. A comparison of five different borehole configurations at three different loading temperatures was composed using an experimentally validated numerical model. The horizontal systems studied and analyzed in this work showed improved performance with scale and charging temperature. This paper supports further exploration into specific use cases for horizontal borehole thermal energy storage systems and suggests applications which would take advantage of better performance at scale.

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The Effect of Thermal Mass on Annual Heat Load and Thermal Comfort in Cold Climate Construction

Cited by 12 publications

References 6 publications

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Simulation pathway for estimating heat island influence on urban/suburban building space-conditioning loads and response to facade material changes

Techno-Economic Analysis of a Seasonal Thermal Energy Storage System with 3-Dimensional Horizontally Directed Boreholes

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