The impact of building orientation and discount rates on a Portuguese reference building refurbishment decision

Vasconcelos, Ana Brandão de; Cabaco, Antonio Sánchez; Pinheiro, Manuel Duarte; Manso, Armando

doi:10.1016/j.enpol.2016.01.021

Cited by 31 publications

(12 citation statements)

References 36 publications

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“…It emerges that, especially for some studies in the climate zones Cfa (Italy [12,66]) and Csa (Italy and Portugal, [26,55,74,79]), the cost-optimal energy performance level is very close to zero for both building typologies, demonstrating the possible economic feasibility of nearly zero-energy buildings. However, for other studies in the same climatic zones, the reached cost-optimal energy performance levels are much higher (up to 125 kWh/m 2 ).…”

Section: Global Cost Values and Gapsmentioning

confidence: 98%

Cost-Optimal Analysis for Nearly Zero Energy Buildings Design and Optimization: A Critical Review

2018

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Since the introduction of the recast of the EPBD European Directive 2010/31/EU, many studies on the cost-effective feasibility of nearly zero-energy buildings (NZEBs) were carried out either by academic research bodies and by national bodies. In particular, the introduction of the cost-optimal methodology has given a strong impulse to research in this field. This paper presents a comprehensive and significant review on scientific works based on the application of cost-optimal analysis applications in Europe since the EPBD recast entered into force, pointing out the differences in the analyzed studies and comparing their outcomes before the new recast of EPBD enters into force in 2018. The analysis is conducted with special regard to the methods used for the energy performance assessment, the global cost calculation, and for the selection of the energy efficiency measures leading to design optimization. A critical discussion about the assumptions on which the studies are based and the resulting gaps between the resulting cost-optimal performance and the zero energy target is provided together with a summary of the resulting cost-optimal set of technologies to be used for cost-optimal NZEB design in different contexts. It is shown that the cost-optimal approach results as an effective method for delineating the future of NZEB design throughout Europe while emerging criticalities and open research issues are presented.

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Section: Global Cost Values and Gapsmentioning

confidence: 98%

Cost-Optimal Analysis for Nearly Zero Energy Buildings Design and Optimization: A Critical Review

2018

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“…They applied this method to Italian hotels in order to identify building materials that can support national energy and tourism policies. Brandão De Vasconcelos et al [31] also developed reference buildings to make informed decisions on refurbishing buildings from technological as well as economic perspectives. They considered the incorporation of building orientation and discount rates in determining appropriate solutions for refurbishment.…”

Section: Purpose and Application Of Reference Buildingsmentioning

confidence: 99%

An Analysis of the Effectiveness of Greenhouse Gas Reduction Policy for Office Building Design in South Korea

et al. 2019

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This paper examines the effectiveness of South Korea’s policy for reducing greenhouse gas (GHG) emissions in office buildings and evaluates if national targets can be met. A sample of office buildings was categorized into two groups—conventional (Group A) and new (Group B)—based on when their construction was approved. Furthermore, data regarding the three design elements of the building envelope, that is building form, window systems, and U-values were collected. By statistically processing data of each element, reference building models were developed and a case study was conducted for each building. Design changes that were incorporated, keeping in mind the GHG reduction policy, showed 13.1% of saving energy in case 8 (reference building of Group B) than case 1 (reference building of Group A). The savings in case 8 were more than the average GHG reduction rate (12.8%) compared to business as usual (BAU). However, case 4 (a conventional (Group A) building form with new (Group B) window systems and U-values) achieved the greatest savings in building loads. The policy to enhance insulation in new buildings to reduce GHG emissions in the building sector has prompted changes in building forms and window systems and has reduced emissions by 10%, that is 3% more than the expected value. Thus, new innovations in building envelope design could achieve an average 12.8% reduction in emissions in buildings.

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“…(2) Natural lighting: Through an in-depth analysis of the sun's altitude, the amount of daylight, etc., many researchers have conducted various studies on how to determine the optimal orientation of a building and on designing the atrium from the perspective of introducing the natural light system for nZEB implementation (refer to Table 2) [16][17][18][19][20][21][22][23][24][25][26][27][28]. First, there are various studies related to determination of the optimal orientation of a building for reducing the building energy demand [16][17][18][19][20]. Abanda and Byer (2016) assessed the impact of the building orientation on building energy consumption using building information modeling according to the following three-step process: (i) building design through the Revit software program; (ii) conversion to a numerical value based on Green Building Studio, one of the leading energy simulation programs; and (iii) analysis of the effect of building orientations on the annual energy usage of a building.…”

Section: Part A-1: Passive Sustainable Designmentioning

confidence: 99%

“…As a result of the analysis of the annual energy consumption according to the seven building shapes, it was determined that the H shape of the building in the Texas climate zone had the highest energy consumption among all the shapes studied [11,15]. (2) Natural lighting: Through an in-depth analysis of the sun's altitude, the amount of daylight, etc., many researchers have conducted various studies on how to determine the optimal orientation of a building and on designing the atrium from the perspective of introducing the natural light system for nZEB implementation (refer to Table 2) [16][17][18][19][20][21][22][23][24][25][26][27][28]. First, there are various studies related to determination of the optimal orientation of a building for reducing the building energy demand [16][17][18][19][20].…”

Section: Part A-1: Passive Sustainable Designmentioning

confidence: 99%

Advanced Strategies for Net-Zero Energy Building: Focused on the Early Phase and Usage Phase of a Building’s Life Cycle

Hong

Kim

et al. 2017

Sustainability

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Abstract:To cope with 'Post-2020', each country set its national greenhouse gas (GHG) emissions reduction target (e.g., South Korea: 37%) below its business-as-usual level by 2030. Toward this end, it is necessary to implement the net-zero energy building (nZEB) in the building sector, which accounts for more than 25% of the national GHG emissions and has a great potential to reduce GHG emissions. In this context, this study conducted a state-of-the-art review of nZEB implementation strategies in terms of passive strategies (i.e., passive sustainable design and energy-saving technique) and active strategies (i.e., renewable energy (RE) and back-up system for RE). Additionally, this study proposed the following advanced strategies for nZEB implementation according to a building's life cycle: (i) integration and optimization of the passive and active strategies in the early phase of a building's life cycle; (ii) real-time monitoring of the energy performance during the usage phase of a building's life cycle. It is expected that this study can help researchers, practitioners, and policymakers understand the overall implementation strategies for realizing nZEB.

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The impact of building orientation and discount rates on a Portuguese reference building refurbishment decision

Cited by 31 publications

References 36 publications

Cost-Optimal Analysis for Nearly Zero Energy Buildings Design and Optimization: A Critical Review

Cost-Optimal Analysis for Nearly Zero Energy Buildings Design and Optimization: A Critical Review

An Analysis of the Effectiveness of Greenhouse Gas Reduction Policy for Office Building Design in South Korea

Advanced Strategies for Net-Zero Energy Building: Focused on the Early Phase and Usage Phase of a Building’s Life Cycle

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