Effect of locations and thicknesses for the different material constituting a building wall

Khattabi, El Mehdi El; Mharzi, Mohamed

doi:10.1016/j.egypro.2017.11.216

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Most studies focus reduction of the operational energy [9][10][11]. Building retrofit targets selected building components, such as the heating ventilation and air-conditioning system (HVAC) [9,[12][13][14][15]; the energy management systems [2]; the building envelope [1,9,15] and specific building envelope elements, such as the wall [16][17][18][19], the thermal mass [20], the airtightness [21], the insulation [12,21], the lighting of the building [2,12,22]. Economic benefits, especially reduction in energy costs and attractive return on energy retrofit investment, are the main driver for energy retrofits decision [2].…”

Section: Introductionmentioning

confidence: 99%

Case study of the upgrade of an existing office building for low energy consumption and low carbon emissions

Charles

Maref

Ouellet-Plamondon

2019

Energy and Buildings

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This case study evaluates the best energy efficiency measures of an existing two-story office building from the late 1960s located in Vancouver. Natural gas was used for heating and electricity was used for lighting, cooling and other needs. The building was simulated to match both metered data and bills. The energy model allowed identifying the parameters to reduce the energy consumption and mitigate the impact on CO2-eq emissions. On-site renewable energy supply was simulated. The return on investment (ROI) of the retrofit strategies (building envelope and renewable energy) was calculated to determine the profitability. From the parametric study, the insulation of the wall and roof, the airtightness and window replacement have the most impact on energy saving and allowed reducing 45% of the total annual energy consumed. These improvements can save more than 70 tons of CO2-eq per year from reducing the natural gas consumption. The return on investment of upgrading the building envelope was 7.7 years in Vancouver. Net zero energy building performance was possible with the addition of photovoltaic solar panel and solar heating to supply the total energy needs of the building, with an ROI of 11.6 years. If we changed the building location to Montreal, the same optimized building envelope reduces the energy consumption by 39%, and the energy saving increases to 56% when using the electric heating system usually already in place. Overall, building envelope upgrades are solutions to consider to improve energy saving in northern climate.

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Section: Introductionmentioning

confidence: 99%

Case study of the upgrade of an existing office building for low energy consumption and low carbon emissions

Charles

Maref

Ouellet-Plamondon

2019

Energy and Buildings

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show abstract

“…These two factors have been the subject of studies and discussions of international programs and organizations such as the UN Environment Programme and the International Energy Agency (IEA) [5,6]. The paper's authors have also analysed this in their previous research, having described the different ways to ensure this comfort by consuming less energy inside the building [7].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Various Thermal Analyses of Smart Windows in Cubic Building Design

Khattabi¹,

Mharzi²,

Zouini³

et al. 2018

JESTR

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This paper presents a thermal analysis of compounds called smart windows in typical building design; such windows are covered with a vanadium dioxide film doped with tungsten and are characterized by their phase transition which makes the transmission coefficient high for low temperatures and low for high temperatures. This leads to the natural optimization of thermal comfort in summer and winter through a decrease in solar radiation transmission in the summer and an increase in it in the winter. A comparative study of four types of glass has been carried out both in summer and winter: simple glass SiO2, dioxide of vanadium un-doped glass, vanadium dioxide glass doped with 3% tungsten and 5% tungsten in order to evaluate their effect on the interior temperature of the building. For these reasons, a thermal model in the dynamic state has been developed to assess the thermal performance in such a building and to evaluate the effect of these windows on thermal comfort in terms of heat flow, density and internal temperature. The analysis was carried out having taken into account the external weather conditions of Fez, such as radiation, natural convection, air exchange, and the outdoor temperature as well as different parameters of the building envelope.

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A thermal analysis of smart glazing under the weather conditions of Fez

et al. 2018

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Effect of locations and thicknesses for the different material constituting a building wall

Cited by 7 publications

References 2 publications

Case study of the upgrade of an existing office building for low energy consumption and low carbon emissions

Case study of the upgrade of an existing office building for low energy consumption and low carbon emissions

Comparative Study of Various Thermal Analyses of Smart Windows in Cubic Building Design

A thermal analysis of smart glazing under the weather conditions of Fez

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