Decision-making model for optimum energy retrofitting strategies in residential buildings

Mejjaouli, Sobhi; Alzahrani, Maha

doi:10.1016/j.spc.2020.07.008

Cited by 37 publications

(17 citation statements)

References 17 publications

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“…Other than energy-saving potential, the energy associated with the life cycle of the materials used in retrofit construction can also be an essential factor in the decision-making process [16][17][18][19][20][21]. Beccali et al [16] discuss the Life cycle assessment (LCA) of a few conventional retrofit materials for single-family homes by considering different material's life stages such as manufacturing embodied energy, operation energy, and demolition energy.…”

Section: Categorymentioning

confidence: 99%

Residential Building Envelope Energy Retrofit Methods, Simulation Tools, and Example Projects: A Review of the Literature

Kamel

Memari

2022

Buildings

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As one of the biggest energy consumers, buildings are the focus of the energy conservation market, and the building envelope, which has the highest impact on heating and cooling loads, is one of the main targets in retrofit projects. Several materials, systems, methods, and simulation tools are used in these projects, and it is critical to understand the impact of these methods in different locations, their frequency of use, and the effectiveness of market-ready new solutions. In that context, it is necessary to review the energy conservation measures (ECMs) that are suitable for residential building envelope retrofitting, and that are commercially available or under research and development. This paper provides an overview of these ECMs. A literature review was conducted on different building envelope ECMs, including traditional and innovative energy retrofit methods, such as aerogel and phase change materials on opaque and transparent components of existing buildings. Results show that the most effective retrofit projects include bundles of ECMs, and the traditional ECMs can be as effective as more innovative solutions in terms of energy saving. Moreover, computer energy models were created for a typical residential building in the US for cold and warm climate zones to determine the impact of different retrofit approaches based on a sensitivity analysis. Results show that envelope ECMs have higher energy saving potentials in cold climate zones, of up to around 30%, and reducing the air infiltration has the highest impact in both cold and warm climate zones in a typical small residential building.

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Section: Categorymentioning

confidence: 99%

Residential Building Envelope Energy Retrofit Methods, Simulation Tools, and Example Projects: A Review of the Literature

Kamel

Memari

2022

Buildings

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“…In most countries, buildings have been the primary energy consumers for cooling and heating [14]. The building industry, especially current residential buildings, is the largest energy user [15]. The consumption is mainly caused by a variety of operations, including cooling, heating, ventilation, lighting, and operating electrical equipment [15].…”

Section: Introductionmentioning

confidence: 99%

“…The building industry, especially current residential buildings, is the largest energy user [15]. The consumption is mainly caused by a variety of operations, including cooling, heating, ventilation, lighting, and operating electrical equipment [15]. As a result, efforts should be focused on optimizing building efficiency in order to reduce energy usage [15].…”

Section: Introductionmentioning

confidence: 99%

Towards Sustainable Energy Retrofitting, a Simulation for Potential Energy Use Reduction in Residential Buildings in Palestine

et al. 2021

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Since buildings are one of the major contributors to global warming, efforts should be intensified to make them more energy-efficient, particularly existing buildings. This research intends to analyze the energy savings from a suggested retrofitting program using energy simulation for typical existing residential buildings. For the assessment of the energy retrofitting program using computer simulation, the most commonly utilized residential building types were selected. The energy consumption of those selected residential buildings was assessed, and a baseline for evaluating energy retrofitting was established. Three levels of retrofitting programs were implemented. These levels were ordered by cost, with the first level being the least costly and the third level is the most expensive. The simulation models were created for two different types of buildings in three different climatic zones in Palestine. The findings suggest that water heating, space heating, space cooling, and electric lighting are the highest energy consumers in ordinary houses. Level one measures resulted in a 19–24 percent decrease in energy consumption due to reduced heating and cooling loads. The use of a combination of levels one and two resulted in a decrease of energy consumption for heating, cooling, and lighting by 50–57%. The use of the three levels resulted in a decrease of 71–80% in total energy usage for heating, cooling, lighting, water heating, and air conditioning.

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“…Compared with the chemical industry, transportation and other related fields, the construction industry has a great prospect in both reducing energy consumption and coping with climate change in present world. According to the International Energy Agency (IEA), buildings and building construction sectors together consume 36% of the total global energy consumption and are responsible for almost 40% of direct and indirect greenhouse gas (GHG) emissions (Hamburg and Kalamees, 2019;Mancini and Nastasi, 2019;Tokbolat et al, 2019;Mahmoodzadeh et al, 2020;Mejjaouli and Alzahrani, 2020). Currently, around 35% of buildings in Europe are over fifty years old.…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

Reduction in Carbon Dioxide Emission and Energy Saving Obtained by Renovation of Building Envelope of Existing Residential Buildings

Chen

Feng

et al. 2021

Aerosol Air Qual. Res.

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Energy and environmental issues have become increasingly prominent, and reducing energy consumption in the construction industry is a key part of solving the energy consumption and carbon dioxide emissions problem of the whole society. The existing buildings in south Jiangsu region of China have large stocks and huge energy consumption and carbon dioxide emissions.An existing residential building in south Jiangsu region of China is selected as the study object to carry out energy-saving reconstruction of its envelope. This study analyzes the energy conservation effect of each building envelope separately by energy consumption simulation software BESI; taking the static payback period as the evaluation standard, the orthogonal test method is used to analyze the economic efficiency of each combination scheme, and finally determine the optimal energy-saving and carbon dioxide emissions reduction renovation scheme.The optimal thickness of expanded polystyrene insulating board of both external wall and roof is 120 mm. The optimal specification of external window is "triple silver low-emissivity glass (5 mm) + air layer (12 mm) + normal glass (5 mm)". Results shows that the cooling capacity of the scheme is 28.37 kWh (m 2 .a) -1 and the heating consumption is 4.22 kWh (m 2 .a) -1 , the total energy consumption of the building is 32.59 kWh (m 2 .a) -1 , the static payback period is 13.76 years, and the dynamic payback period is 22.84 years. Annually, CO2 emissions could be reduced by 86.01 tons, SO2 emissions could be reduced by 2.59 tons, and NOX emissions could be reduced by 1.29 tons through the optimal renovation scheme.

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Decision-making model for optimum energy retrofitting strategies in residential buildings

Cited by 37 publications

References 17 publications

Residential Building Envelope Energy Retrofit Methods, Simulation Tools, and Example Projects: A Review of the Literature

Residential Building Envelope Energy Retrofit Methods, Simulation Tools, and Example Projects: A Review of the Literature

Towards Sustainable Energy Retrofitting, a Simulation for Potential Energy Use Reduction in Residential Buildings in Palestine

Reduction in Carbon Dioxide Emission and Energy Saving Obtained by Renovation of Building Envelope of Existing Residential Buildings

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