Sustainable energy use has become topical in the whole world. Energy gives us comfort we are used to. EU and national regulations determine energy efficiency of the buildings. This is one side of the problem - energy efficiency of houses during exploitation. But the other side is primary energy content of used materials and more rational use of resources during the whole life cycle of a building. The latter value constitutes about 8 - 20% from the whole energy content. Calculations of energy efficiency of materials lead us to energy efficiency of insulation materials and to comparison of natural and industrial materials taking into account their thermal conductivity as well as their primary energy content. Case study of the test house (built in 2012) insulated with straw bales gave the result that thermal transmittance of investigated straw bale walls was according to the minimum energy efficiency requirements set in Estonia U = 0.12 - 0.22 W/m~2K (for walls).
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机译：可持续的能源使用已成为全世界的主题。能源给了我们习惯的舒适。欧盟和国家法规确定建筑物的能效。这是问题的一面 - 剥削期间房屋的能量效率。但另一边是在建筑物的整个生命周期期间使用的使用材料的主要能量含量和更多的资源使用。后一个值占整个能量含量的约8-20％。材料的计算能效导致我们的绝缘材料能效，并考虑到其导热率以及其主要能量含量的自然和工业材料的比较。测试房屋的案例研究（建于2012年）与稻草包绝缘的结果使调查的秸秆围墙的热透射率根据爱沙尼亚u = 0.12-202 w / m〜2k（适用于墙壁） ）。
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