Quantification of economic benefits of renovation of apartment buildings as a basis for cost optimal 2030 energy efficiency strategies

Pikas, Ergo; Kurnitski, Jarek; Liias, Roode; Thalfeldt, Martin

doi:10.1016/j.enbuild.2014.10.004

Cited by 62 publications

(37 citation statements)

References 11 publications

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“…The operative methodology for identifying the cost-optimality, for reference buildings, is exhaustively described in the EU Commission Delegated Regulation n. 244/2012 [4], which provides a comparative method. This approach has been already proposed in sample studies, such as the one of the Building Performance Institute European (BPIE) for Germany, Poland, and Austria [5], but also in recent scientific papers concerning the design of new buildings [6,7] or the refurbishment of existing ones [8,9], even when characterized by historical value. Furthermore, with reference to the EPBD Recast, the optimized energy demand of a building should be mainly met by means of the use of in-situ renewable energy systems.…”

Section: Introductionmentioning

confidence: 99%

Design of the Building Envelope: A Novel Multi-Objective Approach for the Optimization of Energy Performance and Thermal Comfort

et al. 2015

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According to the increasing worldwide attention to energy and the environmental performance of the building sector, building energy demand should be minimized by considering all energy uses. In this regard, the development of building components characterized by proper values of thermal transmittance, thermal capacity, and radiative properties is a key strategy to reduce the annual energy need for the microclimatic control. However, the design of the thermal characteristics of the building envelope is an arduous task, especially in temperate climates where the energy demands for space heating and cooling are balanced. This study presents a novel methodology for optimizing the thermo-physical properties of the building envelope and its coatings, in terms of thermal resistance, capacity, and radiative characteristics of exposed surfaces. A multi-objective approach is adopted in order to optimize energy performance and thermal comfort. The optimization problem is solved by means of a Genetic Algorithm implemented in MATLAB ® , which is coupled with EnergyPlus for performing dynamic energy simulations. For demonstration, the methodology is applied to a residential building for two different Mediterranean climates: Naples and Istanbul. The results show that for Naples, because of the higher incidence of cooling demand, cool external coatings imply significant energy savings, whereas the OPEN ACCESS Sustainability 2015, 7 10810 insulation of walls should be high but not excessive (no more than 13-14 cm). The importance of high-reflective coating is clear also in colder Mediterranean climates, like Istanbul, although the optimal thicknesses of thermal insulation are higher (around 16-18 cm). In both climates, the thermal envelope should have a significant mass, obtainable by adopting dense and/or thick masonry layers. Globally, a careful design of the thermal envelope is always necessary in order to achieve high-efficiency buildings.

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Section: Introductionmentioning

confidence: 99%

Design of the Building Envelope: A Novel Multi-Objective Approach for the Optimization of Energy Performance and Thermal Comfort

et al. 2015

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“…Additional benefits include the creation or retention of jobs and investments in local companies, thereby benefiting local workers. In a study of economic benefits of renovation of apartment buildings in Estonia it was found that 17 jobs per EUR 1 million of investment in renovation were generated per year (Pikas et al 2015). Out of these 17 jobs, 10 had been created on the construction site, 1 in the consultancy and 6 in manufacturing industries.…”

Section: Major Co-benefitsmentioning

confidence: 99%

Technical report: Nordic Green to Scale for countries:

Tammiste¹,

Poltimäe²,

Kuldna³

et al. 2018

TemaNord

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“…Another approach consists in using statistical data to extract statistically relevant parameters [32,46,47]. This information can be used, as done by Schwehr et al [48], to define 'building typologies' within the building stock, where each typology corresponds to a building with the same set of parameters, including period of construction, context, construction characteristics, and other features related to the assessment objectives.…”

Section: Literature Reviewmentioning

confidence: 99%

Application of the cost-optimal methodology to urban renewal projects at the territorial scale based on statistical data—A case study in Spain

Moreno

Lufkin

Rey

et al. 2017

Energy and Buildings

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As tomorrow's cities are already largely built, many strategies stress the importance of urban renewal processes to address current energy issues. This paper focuses on the Spanish residential building stock built until 2001, which has a low level of energy performance.Considering the current economic crisis, the future lies in renovating the built environment, which holds a significant energy-saving potential. This potential is here quantified by applying the cost-optimal methodology, initially proposed by the Energy Performance of Buildings Directive, and which calculates costoptimal levels of minimum energy performance requirements at the building and component scale.The originality of our study lies in the application of this methodology at the territorial scale, comparing different retrofitting scenarios by scaling-up building-scale results through an archetypal approach. We also describe an Excel-based tool allowing two types of studies: (i) at the building scale, for one archetype in a particular climatic zone; (ii) at the territorial scale, to have an overview of all building archetypes and climatic zones simultaneously. Results include economic aspects, energy consumption and savings and associated emissions.The outcome can help construction-sector firms adapt their business plan, while also providing stakeholders with decision-support to promote a sustainable renewal of the building stock.

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Quantification of economic benefits of renovation of apartment buildings as a basis for cost optimal 2030 energy efficiency strategies

Cited by 62 publications

References 11 publications

Design of the Building Envelope: A Novel Multi-Objective Approach for the Optimization of Energy Performance and Thermal Comfort

Design of the Building Envelope: A Novel Multi-Objective Approach for the Optimization of Energy Performance and Thermal Comfort

Technical report: Nordic Green to Scale for countries:

Application of the cost-optimal methodology to urban renewal projects at the territorial scale based on statistical data—A case study in Spain

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