Communications - Scientific Letters of the University of Zilina 2013, 15(1):88-95 | DOI: 10.26552/com.C.2013.1.88-95
Energy and Environmental Evaluation of the Selected Wooden Family Houses
- Department of Building Engineering and Urban Planning, Faculty of Civil Engineering, University of Zilina, Slovakia
Existing buildings are responsible for over 40 % of the world´s total primary energy consumption (data from IEA). The EU adopted the Energy Performance of Buildings Directive [1], which obliges Member States to reduced 20 % in greenhouse gas (GHG) emissions by 2020 compared with 1990 levels, a 20 % cut in energy consumption through improved energy efficiency by 2020 and a 20 % increase in the use of renewable energy by year 2020. The Directive also requires Member States to ensure that, after year 2020, all new buildings in the EU will have to consume “nearly zero” energy.
Slovakia has excellent availability of wood and therefore it would be appropriate to build the family houses as wooden houses in combination with light sandwich envelope structures.
However, more extensive use is still hampered by the prejudice about disadvantages of wooden structures, which are from the past.
This paper evaluates the results of calculation and measuring two wooden family houses, located in the Slovak Republic, from the perspective of low energy construction and sustainable development principles. The first one is a wooden house constructed in the year 2000 and built under valid thermo-technical standards. The second one is a newly built passive family house. The results of energy calculations and measurements under real conditions in situ are presented. The calculations of the theoretical evaluation are appraised in accord with the Energy Performance of Buildings Directive 2002/91/EC [2] and EU and Slovak standards or codes.
Environmental evaluations are performed for existing buildings and the results are confronted with the values from various buildings based on different materials (lightweight concrete blocks and lime-sand bricks).
Keywords: Wooden family houses, energy and environmental performance, building envelopes.
Published: March 31, 2013 Show citation
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References
- Directive 2010/31/EC of the European Parliament and of the Council on the Energy Performance of Buildings (recast). Official J. of the European Union, 18. 6. 2010, L 153/13-35.
- Directive 2002/91/EC of the European Parliament and the Council on "Energy Performance of Buildings". Official J. of the European Communities, U. V. Es L 1, 4. 1. 2003, p. 65-71.
- Act No. 555/2005 Coll. on Energy Performance of Buildings and on Amendment and Supplements to Certain Acts, as amended (the "Act").
- Act No. 300/2012 Coll. amending and supplementing Act No. 555/2005 Coll. on Energy Performance of Buildings and on Amendments and Supplements to Certain Laws, as amended, and amending and supplementing Act No. 50/1976 Coll. on Land Use Planning and Building Order (Building Act), as amended.
- STN 73 0540 part 1-3 Thermal performance of buildings and components. Thermal protection of buildings, Slovak Standards Institute, Bratislava, 2012.
- STN 73 0550 Measuring of heating energy consumption. In situ method, Slovak Standards Institute, Bratislava, 1998.
- IBO, Guidelines to calculating the OI3 indicators Version 2.2, Osterreichisches Institut fur Bauen und Okologie GmbH, 2011.
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