Early Stage CAD-Compliant Energy Performance Assessment Method
Early Stage CAD-Compliant Energy Performance Assessment Method作者机构：Faculty of Civil Engineering Tallinn University of Technology Tallinn 12618 Estonia Hevac Ltd. Tallinn 10621 Estonia
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2013年第7卷第9期
页 面：1662-1668页
学科分类：090801[农学-水产养殖] 080702[工学-热能工程] 0908[农学-水产] 08[工学] 0807[工学-动力工程及工程热物理] 09[农学]
主 题：评估方法 能源需求 早期阶段 性能评估 CAD 计算机辅助设计 兼容 建筑围护结构
摘 要：A simple calculator for early stage energy performance assessment in residential buildings was developed and partially validated in this study. The calculator is based on the correlation of heat loss and energy need for heating and has fixed internal heat gains as intended for compliance assessment. With the calculator, the effect of any parameter implemented can be immediately seen on delivered and primary energy. Because of simple equations, it is suitable for implementation into CAD (computer aided design) design tools including basic BIM (building information modeling) data. Results showed that the accuracy of the correlation for the cases with practical relevance was not worse than 14% of the energy need of space heating. This applies for passive house insulation level; for less insulated building envelopes, the deviations were smaller. This 14% equals to only 3 kWh/(m2·a), i. e., the percentage difference in the total delivered and primary energy was much lower because of other components in the energy balance. The deviations determined were implemented in the calculator as safety margin. Results prove that simple energy performance assessment based on specific heat loss coefficient is well justified for early stage energy analyses as well as for compliance assessment implemented in Estonian regulation.
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