Original scientific paper
https://doi.org/10.5592/otmcj.2013.2.7
Life-cycle Oriented Renovation Strategies for Social Housing Stock
Iva Kovacic
; Vienna University of Technology, Department of Industrial Building and Interdisciplinary Planning, Austria
Markus Summer
Christoph Achammer
Abstract
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.
Keywords
Social Housing; Refurbishment; Life Cycle Costs; Life Cycle Assessment; Sustainability
Hrčak ID:
112948
URI
Publication date:
9.12.2013.
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