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The aim of this research is to analyse the thermal properties of different non-traditional insulation materials with low thermal conductivity and light weight that are made from Latvian local raw materials and are ?green? or are innovative and advanced materials. The studied materials are grouped depending on the production type and possible applications as follows: ? multi-layer combination of insulation materials, incl. low-emission surfaces; ? straw, cane, hemp, and birch wood fibreboard made from local raw mat...

This research work describes cost-optimal calculations for existing buildings of different categories and main building elements, as well as comparison with the existing energy requirements. Calculations are based on Directive 2010/31/EU and on the Commission Delegated Regulation (EU) No 244/2012 with the associated Guidelines. Those documents are used both ? for the calculation of cost-optimal energy performance for a whole building (MWh or kWh/m2 per year) and for the assessment of optimal U-value for different ...