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The costs and potentials for heat savings in buildings: refurbishment costs and heat saving cost curves for 6 countries in Europe
Energy and Buildings ( IF 6.7 ) Pub Date : 2020-09-10 , DOI: 10.1016/j.enbuild.2020.110454
M. Hummel , R. Büchele , A. Müller , E. Aichinger , J. Steinbach , L. Kranzl , A. Toleikyte , S. Forthuber

Around 25% of final energy consumption in the European Union is currently used for space heating. The potential for reducing this demand through renovation of existing buildings is very significant and recognised to be an important factor for reaching CO2 reduction targets. In this analysis we develop two types of cost curves for heat savings in buildings in 6 European countries. This is based on a detailed representation of the existing building stocks and an analysis and comparison of costs and effects of refurbishment actions for several levels of heat savings in each representative building in these countries. We find that the costs for reaching savings of 40-60% are remarkably cheaper than for reaching higher savings and that the highest and cheapest savings are located in buildings that are still not renovated. We also find the following highly influencing factors on the costs of renovation measures: the share of window area in the envelope, the surface-to-volume ratio and the current heat demand. The results of this work can be further used to investigate cost optimal levels of heat savings versus heat supply in order to draw the right decisions on the way to an efficient and low CO2 energy system.



中文翻译:

建筑节能的成本和潜力:欧洲6个国家的整修成本和节能曲线

欧盟目前约有25%的最终能源消耗用于空间供暖。通过翻新现有建筑物来减少这种需求的潜力非常巨大,并且被认为是达到CO 2的重要因素减少目标。在此分析中,我们针对欧洲6个国家/地区的建筑物热量节省绘制了两种成本曲线。这是基于对这些国家中每座代表性建筑中现有建筑存量的详细表示以及对多个节能水平的整修行动的成本和效果的分析和比较。我们发现,达到40-60%的节省成本比达到更高的节省要便宜得多,而且最高和最便宜的节省都位于尚未翻新的建筑物中。我们还发现以下对装修措施成本有很大影响的因素:信封中窗户面积的份额,表面积与体积之比以及当前的热量需求。2能源系统。

更新日期:2020-09-10
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