Airtightness of Energy Efficient Buildings

Abstract

The paper deals with the energy performance of
buildings with regard to the requirements of Directive
2010/31/EU of the European Parliament and of the Council of 19
May 2010 on the energy performance of buildings. One of the
basic principles of energy efficient buildings is perfectly airtight
envelope of buildings. Untightness leads to uncontrolled air
exchange and increased heat loss. The objective of the paper is to
characterize and analyze the airtightness of energy efficient
buildings. The analysis is performed on a sample of
measurements of energy efficient buildings in the Czech
Republic. The sample consists of 50 new buildings built between
2007 and 2011. Each building of the sample fulfills requirements
for reduced power consumption with regard to sustainable
development.