European residential buildings and empirical assessment of the Hellenic building stock, energy consumption, emissions and potential energy savings

Balaras, Constantinos A.; Gaglia, A.; Georgopoulou, E.; Mirasgedis, S.; Sarafidis, Y.; Lalas, D. P.

doi:10.1016/j.buildenv.2005.11.001

Cited by 436 publications

(222 citation statements)

References 23 publications

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“…The considered refurbishment must comply with economic constraints (limited economic means since manager is non-profit organization, and minimisation of operational costs, such as heating), minimization of emissions and carbon footprint, and protection of cultural heritage as well as of social interests such as up keeping of affordable housing and accessibility, keeping in mind that built heritage is "non-renewable" capital (Hassler, 2009) This is a novel approach, considering social and cultural aspects, which are mostly neglected in current approach for stock refurbishment. The recent literature focuses on energy assessment of stocks (Loga and Diefenbach, 2012) or improvement of energy-efficiency and minimization of CO2 emissions, mostly through application of external insulation, window-improvement or improvement of the heating system (Uhlein and Eder, 2010, Veerbeck and Hens, 2005, Balaras et al, 2007.…”

Section: Thermal Refurbishment Of Social Housing -Current Issuesmentioning

confidence: 99%

Life-cycle Oriented Renovation Strategies for Social Housing Stock

Kovačić

Summer

Achammer

2013

OTMCJ

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Buildings cause 40% of total energy consumption, and 20% of CO2 emissions worldwide. In the European context, the main potential for the achievement of energy efficient built environment remains with the existing stock. This paper will present the life-cycle oriented renovation strategies for historic, especially large social housing stock, in order to meet the increased requirements in terms of energy efficiency simultaneously providing affordable housing and meeting the demands for monument conservation. Specific renovation-issues such as insufficient standard or size of housing units, demographic change (aging of society), thermal insufficiencies and partial obsolescence of building structure are bound to the age and typology of this specific stock. The developed strategies are based on the variations of façade-insulation technology and in further step on variation of building-hull refurbishment-level and energy system, applying the methodology of life cycle analysis (CO2-equivalent assessment) and calculation of amortization-periods for refurbishment-investment. The developed renovation strategies were evaluated in terms of cultural-historical, ecologic and economic criteria.The findings demonstrate the importance of operation-phase in the building life-cycle, which is crucial for the economic and ecologic impact causing the largest energy consumption and related CO2 emissions. Due to the very long payback periods for refurbishment in the context of social housing, incentives for owners as well as support for the use of more sustainable heating systems for the tenants are necessary.

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Section: Thermal Refurbishment Of Social Housing -Current Issuesmentioning

confidence: 99%

Life-cycle Oriented Renovation Strategies for Social Housing Stock

Kovačić

Summer

Achammer

2013

OTMCJ

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“…In the European Union (EU), energy consumption of buildings accounts for over 40% of the final energy consumed in the EU, of which residential buildings are responsible for 63% of total energy consumption in the building sector [1].…”

Section: Introductionmentioning

confidence: 99%

The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position

Roque

Santos

2017

Buildings

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Lightweight steel-framed (LSF) construction, given its advantages, has the potential to reach high standards in energy and environmental performance of buildings, such as nearly zero-energy buildings (nZEB). When compared with traditional construction, LSF system offers distinct benefits in such fields as sustainability, cost-effectiveness, constructive process, and safety at work. Despite the benefits of this constructive system, the effect of thermal bridges in LSF elements, caused by the high thermal conductivity of the steel structure, can be a disadvantage. The excessive heat losses or gains through these thermal bridges are more relevant in buildings' exterior envelope, such as facade walls. These building components' thermal performance is crucial in the buildings' overall energetic behaviour, with a direct impact on energy consumption and resulting monetary costs during their operational stage. In this work the influence of the thermal insulation position on its effectiveness is evaluated in LSF facade walls. For this purpose, several LSF wall types are assessed, namely cold, warm, and hybrid construction. The influence of thermal bridges instigated by the steel studs in the LSF walls' overall thermal performance is evaluated as well. The computations are performed using specialized finite element software (THERM).

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“…This process implicates the consideration of multiple environmental and anthropological variables. The environmental and bioclimatic design elements of vernacular architecture; amongst which are the consideration of climatic conditions, topography, rational use of local resources concerning employed materials and complexity of construction was highlighted in previous studies [2][3][4]. Passive heating and cooling strategies of vernacular buildings presumed upon the proper use of materials as well as buildings' location and orientation.…”

Section: Introductionmentioning

confidence: 99%

Numerical assessment of night ventilation impact on the thermal comfort of vernacular buildings

2017

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Night ventilation, is one of the most effective passive cooling techniques that may contribute to the improvement of the occupants thermal comfort conditions. Despite the justified effectiveness of night ventilation, few studies quantified its influence on the thermal comfort of vernacular buildings, especially under warm dominant climates. The aim of this study is the investigation of the impact of night ventilation on the thermal comfort of vernacular buildings under summer dominant environmental conditions. The subjects under investigation was one traditional buildings in the city of Nicosia in Cyprus. In terms of this study numerical analysis regarding the thermal comfort of the investigated buildings was performed by employing Energy Plus and the flow solver of Design Builder. The indoor operative temperature distribution, the indoor air velocity and a thermal comfort related index were identified in selected thermal zones of the examined building using night ventilation. The results of this study quantified the potential temperature decrease that can result on vernacular buildings due to the use of night ventilation and revealed some restrictions with regard to the allowed percentage of the opening sizes towards achieving optimal thermal conditions in space. This study aspires to provide useful insight regarding the importance of humans' behavior in terms of enabling night ventilation to vernacular buildings, as well as to con-tribute to the ongoing scientific discussion on this subject.

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European residential buildings and empirical assessment of the Hellenic building stock, energy consumption, emissions and potential energy savings

Cited by 436 publications

References 23 publications

Life-cycle Oriented Renovation Strategies for Social Housing Stock

Life-cycle Oriented Renovation Strategies for Social Housing Stock

The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position

Numerical assessment of night ventilation impact on the thermal comfort of vernacular buildings

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