Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility

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Abstract

Many numerical models for building energy simulation assume empty rooms and do not account for the indoor content of occupied buildings. Furnishing elements and indoor items have complicated shapes and are made of various materials. Therefore, most of the people prefer to ignore them. However, this simplification can be problematic for accurate calculation of the transient indoor temperature. This article firstly reviews different solutions to include the indoor content in building models and suggests typical values for its characteristics. Secondly, the paper presents the results of a numerical study investigating the influence of the different types of thermal inertia on buildings energy flexibility. Although the insulation level and thermal mass of a building envelope are the dominant parameters, it appears that indoor content cannot be neglected for lightweight structure building simulations. Finally, it is shown that the integration of phase change materials in wallboards or furniture elements can appreciably improve the energy flexibility of buildings.
Original languageEnglish
Title of host publicationProceedings of the 15th IBPSA Conference : Building Simulation 2017
EditorsCharles S. Barnaby, Michael Wetter
Volume15
PublisherInternational Building Performance Simulation Association
Publication date2017
Pages35-42
ISBN (Electronic)978-1-7750520-0-5
Publication statusPublished - 2017
EventThe 15th International Conference of IBPSA - Hyatt Regency San Francisco, 5 Embarcadero Center, San Francisco, CA 94111, San Francisco, United States
Duration: 7 Aug 20179 Aug 2017
Conference number: 15
http://www.buildingsimulation2017.org/

Conference

ConferenceThe 15th International Conference of IBPSA
Number15
LocationHyatt Regency San Francisco, 5 Embarcadero Center, San Francisco, CA 94111
CountryUnited States
CitySan Francisco
Period07/08/201709/08/2017
Internet address
SeriesBuilding Simulation Conference proceedings
Volume15
ISSN2522-2708

Fingerprint

Phase change materials
Numerical analysis
Insulation
Numerical models
Hot Temperature
Temperature

Keywords

  • Thermal mass
  • Numerical analysis

Cite this

Johra, H., Heiselberg, P. K., & Dreau, J. L. (2017). Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility. In C. S. Barnaby, & M. Wetter (Eds.), Proceedings of the 15th IBPSA Conference: Building Simulation 2017 (Vol. 15, pp. 35-42). International Building Performance Simulation Association. Building Simulation Conference proceedings, Vol.. 15
Johra, Hicham ; Heiselberg, Per Kvols ; Dreau, Jerome Le. / Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility. Proceedings of the 15th IBPSA Conference: Building Simulation 2017. editor / Charles S. Barnaby ; Michael Wetter. Vol. 15 International Building Performance Simulation Association, 2017. pp. 35-42 (Building Simulation Conference proceedings, Vol. 15).
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title = "Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility",
abstract = "Many numerical models for building energy simulation assume empty rooms and do not account for the indoor content of occupied buildings. Furnishing elements and indoor items have complicated shapes and are made of various materials. Therefore, most of the people prefer to ignore them. However, this simplification can be problematic for accurate calculation of the transient indoor temperature. This article firstly reviews different solutions to include the indoor content in building models and suggests typical values for its characteristics. Secondly, the paper presents the results of a numerical study investigating the influence of the different types of thermal inertia on buildings energy flexibility. Although the insulation level and thermal mass of a building envelope are the dominant parameters, it appears that indoor content cannot be neglected for lightweight structure building simulations. Finally, it is shown that the integration of phase change materials in wallboards or furniture elements can appreciably improve the energy flexibility of buildings.",
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Johra, H, Heiselberg, PK & Dreau, JL 2017, Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility. in CS Barnaby & M Wetter (eds), Proceedings of the 15th IBPSA Conference: Building Simulation 2017. vol. 15, International Building Performance Simulation Association, Building Simulation Conference proceedings, vol. 15, pp. 35-42, The 15th International Conference of IBPSA, San Francisco, United States, 07/08/2017.

Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility. / Johra, Hicham; Heiselberg, Per Kvols; Dreau, Jerome Le.

Proceedings of the 15th IBPSA Conference: Building Simulation 2017. ed. / Charles S. Barnaby; Michael Wetter. Vol. 15 International Building Performance Simulation Association, 2017. p. 35-42 (Building Simulation Conference proceedings, Vol. 15).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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AU - Heiselberg, Per Kvols

AU - Dreau, Jerome Le

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Y1 - 2017

N2 - Many numerical models for building energy simulation assume empty rooms and do not account for the indoor content of occupied buildings. Furnishing elements and indoor items have complicated shapes and are made of various materials. Therefore, most of the people prefer to ignore them. However, this simplification can be problematic for accurate calculation of the transient indoor temperature. This article firstly reviews different solutions to include the indoor content in building models and suggests typical values for its characteristics. Secondly, the paper presents the results of a numerical study investigating the influence of the different types of thermal inertia on buildings energy flexibility. Although the insulation level and thermal mass of a building envelope are the dominant parameters, it appears that indoor content cannot be neglected for lightweight structure building simulations. Finally, it is shown that the integration of phase change materials in wallboards or furniture elements can appreciably improve the energy flexibility of buildings.

AB - Many numerical models for building energy simulation assume empty rooms and do not account for the indoor content of occupied buildings. Furnishing elements and indoor items have complicated shapes and are made of various materials. Therefore, most of the people prefer to ignore them. However, this simplification can be problematic for accurate calculation of the transient indoor temperature. This article firstly reviews different solutions to include the indoor content in building models and suggests typical values for its characteristics. Secondly, the paper presents the results of a numerical study investigating the influence of the different types of thermal inertia on buildings energy flexibility. Although the insulation level and thermal mass of a building envelope are the dominant parameters, it appears that indoor content cannot be neglected for lightweight structure building simulations. Finally, it is shown that the integration of phase change materials in wallboards or furniture elements can appreciably improve the energy flexibility of buildings.

KW - Thermal mass

KW - Numerical analysis

KW - Thermal mass

KW - Numerical analysis

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Johra H, Heiselberg PK, Dreau JL. Numerical Analysis of the Influence of Thermal Mass, Phase Change Materials and Furniture / Indoor Content on Building Energy Flexibility. In Barnaby CS, Wetter M, editors, Proceedings of the 15th IBPSA Conference: Building Simulation 2017. Vol. 15. International Building Performance Simulation Association. 2017. p. 35-42. (Building Simulation Conference proceedings, Vol. 15).