Embodied Energy of Windows in Buildings: Impact of Architectural and Technical Choices - Part 2

AUTHOR(S):

Anne Hoellinger, Carmen Vasile, Louis Piccon

TITLE

Embodied Energy of Windows in Buildings: Impact of Architectural and Technical Choices - Part 2

ABSTRACT

In this publication, the relationship that exists between embodied energy of building components and the global energy efficiency of building has been quantified. First, the embodied energy of multiple windows based on their typology has been compared. The aim was to evaluate the embodied energy and additional costs required for a triple glazing window, with the gain in energy consumption that its integration generates for a building. The study was performed on an existing case. Energy consumptions were obtained by in situ measurements and reinforced by building modeling using dynamic thermal simulation software. These allowed us to estimate the return on investment in terms of the embodied energy of building elements; it is a reasoning process expressing overall energy costs. The global economic aspect has also been studied over the lifetime of the windows. This study proves that an awareness of embodied energy allows us to draw results and conclusions on environmental impact and energy consumption that can be used by building designers and architects at a decision-making level.

KEYWORDS

Embodied energy, triple and double glazed window, energy costs and savings, operational performance, return on investment

REFERENCES

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[10] METL (Ministry of Territories and Housing) and MEDDE (Ministry of Ecology, Sustainable Development and Energy), Environmental Performance of Buildings – Training support for construction players, 128 pp. 2013.

[11] NF EN ISO 10077-1 Thermal performance of windows, doors and closures – Calculation of heat transfer coefficient – Part 1: Simplified method.

[12] NF EN ISO 10077-2 Thermal performance of windows, doors and closures – Calculation of heat transfer coefficient – Part 2: Numerical method for joinery profiles.

[13] NF EN ISO 6946 Building components and walls- Thermal resistance and heat transfer coefficient – Calculation method.

[14] NF EN ISO 10211 (parts 1 and 2); Thermal bridges in buildings – Thermal fluxes and surface temperatures – Detailed calculations.

[15] CEN/TC 350, Sustainability of Construction Works-assessment of Buildings – part 2: Framework for the Assessment of Environmental Performance, 15643-2, AFNOR, 2008.

[16] Martin Jakob, Marginal costs and co-benefits of energy efficiency investments. The case of the Swiss residential sector; Revue of Energy Policy 34 (2006) 172–187, Elsevier.

[17] http://www.statistics.sustainable-development. gouv.fr/pegase.html (consulted on 10 February 2015).

Cite this paper

Anne Hoellinger, Carmen Vasile, Louis Piccon. (2017) Embodied Energy of Windows in Buildings: Impact of Architectural and Technical Choices - Part 2. International Journal of Environmental Science, 2, 184-190