Abstract
The article provides the correlation analysis between the thickness of a thermo-insulation layer of the typical floor-on-soil sample and its simple payback time in a traditional new construction single-apartment residential and net-zero energy building. The calculations were carried out on the energy efficiency class of the building and the geographic area of the construction. On the basis of the results, a simple payback time was calculated. The main aim – thermal transmittance coefficients of soil touching partitions must satisfy the normative value of technical construction regulation and European standards. The research object of the study is relationships between the thickness of a thermoinsulation layer of the typical floor-on-soil sample and its simple payback time. Lithuania was chosen as the geographic area of the research. Calculations were carried out for seven towns: Vilnius, Kaunas, Klaipeda, Siauliai, Panevezys, Utena, and Dukstas. The test result – developed correlation functions. Correlation analysis results are important not only for designers making decisions during the pre-design stage, but also for energy consumption auditors and experts.
Highlights
By 31 December 2020, European Union Member States must ensure that all newly constructed buildings are nearly zero-energy buildings conforming to requirements of the European Directive 2010/31/EU (2010). 8-year period is set to achieve this aim (Marszal et al 2012).Single-apartment residential buildings with almost no consumed energy are especially energy efficient as energy consumption is almost equal to zero or very low
In Lithuania, A++ class buildings correspond to this category
This study aims to create correlation functions and determinate the link between the thickness of a thermal insulation layer of the floor and it’s simple payback time
Summary
By 31 December 2020, European Union Member States must ensure that all newly constructed buildings are nearly zero-energy buildings conforming to requirements of the European Directive 2010/31/EU (2010). Single-apartment residential buildings with almost no consumed energy are especially energy efficient as energy consumption is almost equal to zero or very low. Most of energy needs in such buildings are met using renewable energy resources, including production on site or in close proximity. In Lithuania, A++ class buildings correspond to this category. Effective design and construction of buildings that consumes almost no energy (A++ class) is a big challenge for Lithuania as well as the entire Europe. Many articles emphasise the existing need for a scientific stimulus in this direction (Kurnitski et al 2011)
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