Selection of optimization objectives for decision-making in building energy retrofits

Jafari, Amirhosein; Valentin, Vanessa

doi:10.1016/j.buildenv.2017.12.027

Cited by 73 publications

(43 citation statements)

References 36 publications

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“…The LCC approach serves as a makeshift economic & energy evaluating model as it depicts the trend between retrofit costs and energy-saving benefits. Here, the universal concept of minimizing the total LCC defines a set of optimal combinations of retrofit strategies [8,12]. By integrating the LCC approach with an environmental assessment model, a unique optimal strategy is obtained.…”

Section: Model Framework and Methodologymentioning

confidence: 99%

“…Typically, the application of numerous optimisation approaches (single-objective [3,4] or multi-objective [5][6][7]) addresses this difficulty. Recent studies have demonstrated that a multi-objective optimisation approach is more suited to establish an optimal retrofit solution [8]. In this approach, the universal concept of optimising the energy, environmental and economic (3E) variables is emphasised to promote the interpretability, applicability and comparability between outcomes [1,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…In this approach, the universal concept of optimising the energy, environmental and economic (3E) variables is emphasised to promote the interpretability, applicability and comparability between outcomes [1,9,10]. Social variables of building retrofits, such as the best possible compromise to enhance thermal comfort and indoor air quality, are also commonly considered [8,11,12].…”

Section: Introductionmentioning

confidence: 99%

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A target-driven decision-making multi-layered approach for optimal building retrofits via agglomerative hierarchical clustering: A case study in China

Hong

Ezeh²,

Zhao

et al. 2021

Building and Environment

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The optimisation of energy, environmental and economic (3E) outcomes is the principal approach to identifying retrofit solutions for a sustainable built environment. By applying this approach and defining a set performance target, this study proposes a makeshift decision framework that integrates a data mining procedure (agglomerative hierarchical clustering (AHC)) into the multi-objective decision-making process to provide a simplified 3E assessment of building retrofits on a macro-scale. The framework comprises of three methodological models: (1) a building stock aggregation model, (2) an individualistic 3E model that provides the sensitivity analysis for (3) a life cycle cost-environmental assessment model. The framework is demonstrated and validated with a case study aimed at achieving the set EUI targets for low-rise office buildings (LOB) in Shanghai. The model defines 4 prototypical buildings for the existing LOB blocks, which are used for the individual evaluation of 12 commonly applied retrofit measures. Subsequently, a simplified LCC-environmental assessment was performed to evaluate the 3E prospects of 2048 possible retrofit combinations. The results uniquely identify retrofit solutions to attain set performance targets and optimal building performance. Furthermore, the decision criteria for different investment scenarios are discussed. Overall, this study provides building investors an innovative framework for a facile and holistic assessment of a broader range of retrofit alternatives based on set performance targets. .

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Section: Model Framework and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A target-driven decision-making multi-layered approach for optimal building retrofits via agglomerative hierarchical clustering: A case study in China

Hong

Ezeh²,

Zhao

et al. 2021

Building and Environment

View full text Add to dashboard Cite

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“…Davies and Osmani (2011); Liang et al (2017) concluded that the tax discount for GBR ventures and eliminate the value-added tax (VAT) difference between new buildings and retrofits will be prominent items to enhance the success of GBR ventures. " Property tax (TX): the present value of the total amount of property taxes that the owner must pay during the building's service life (building with improved energy efficiency or use of renewable energy may be eligible for tax credits to offset some of the costs)" (Jafari & Valentin, 2018). Furthermore, the Iraqi government can put effective guidelines to stimulate the GB project execution (Zebari & Ibrahim, 2016).…”

Section: Competent Team Members Through Training and Skills Developmentmentioning

confidence: 99%

Critical Success Factors of Green Building Retrofitting Ventures in Iraq

Alfaiz

Karim

Alashwal

2021

IJSCET

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Climate change has become one of the challenges for development. The building sector represents the largest resource of greenhouse gas production. Iraq depends on fossil fuels in producing energy, electricity with a lack of energy standards. This has made Iraq one of the utmost carbon-intense economic in the world. There is a lack of studies about green building retrofitting (GBR) projects in Iraq as well as lack of awareness about the importance of this concept and its welfare regarding the reduction of the climate change crisis. The enhancement of the implementation of GBR projects in Iraq will be a promising solution to overcome the negative impact of the existing buildings. The GBR projects represent a complicated project that needs an effective project management practices. It is crucial to identify the challenges that restrict the success of these ventures. This paper provides critical success factors (CSF) that will stimulate the achievement of GBR ventures in Iraq. A questionnaire survey is conducted to collect reliable data from the experts in retrofitting projects in Basra, Iraq. Findings showed that the top five challenges in implementing GBR are; absence of government legislation, lack of awareness about benefits of GBR, low government and private sectors’ investment, incompetent team members, and lack of sustainability knowledge. Additionally, the top five CSFs are; efficient legislation, competent team members, subsidies or tax reduction, sufficient experience and competence of the project manager. This research will contribute to the improvement of project management practices in GBR projects, reduction of environmental pollution and enhancement of Iraq’s oil revenues instead of using oil as energy fuel.

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“…Jarari and Valentin expand on the previous decision making model in a later paper [7] that expands on this matrix and applies it to different decision-makers and investors within energy retrofitting projects. This research differs from the previous paper in that it heavily considers the benefits to the investors and decision-makers.…”

Section: Literature Reviewmentioning

confidence: 99%

Building energy efficiency retrofit prioritization: A case study of the Iowa Army National Guard

Robertson¹

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Selection of optimization objectives for decision-making in building energy retrofits

Cited by 73 publications

References 36 publications

A target-driven decision-making multi-layered approach for optimal building retrofits via agglomerative hierarchical clustering: A case study in China

A target-driven decision-making multi-layered approach for optimal building retrofits via agglomerative hierarchical clustering: A case study in China

Critical Success Factors of Green Building Retrofitting Ventures in Iraq

Building energy efficiency retrofit prioritization: A case study of the Iowa Army National Guard

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