The local outdoor climate and building characteristics influence the energy use of a building to an important extent. To design energy efficient and climate robust buildings, it is important to get insights into the energy demand over the building's service life from the early design phase onwards. This paper presents an overview of the different variants of the heating and cooling degree day method. A convection-permitting climate model is furthermore used to obtain heating and cooling degree days (for a baseline temperature of 18 °C) for the RCP 8.5 (high-end) climate change scenario for Belgium on a high-resolution grid of 2.8km. Area of focus for this paper is Belgium. The results demonstrate a decrease of the HDD with 27% between 1976-2004 (3189 HDD) and 2070-2098 (2337 HDD). In contrast, the CDD were found to increase with a factor 2.4 from 167 CDD to 401 CDD in the same timeline. Smaller reductions in average HDD were moreover found in urban areas compared to rural areas. For the CDD, a higher absolute increase was found for urban areas and the Northeast of Belgium.

当地的室外气候和建筑物特征在很大程度上影响建筑物的能源使用。要设计节能和耐气候的建筑，从早期设计阶段开始深入了解建筑物使用寿命内的能源需求就很重要。本文概述了加热和冷却天数方法的不同变体。此外，在2.8 km的高分辨率网格上，使用允许对流的气候模型来获取比利时的RCP 8.5（高端）气候变化情景的加热和冷却天数（基准温度为18°C）。本文的重点领域是比利时。结果表明，在1976-2004年（3189硬盘）到2070-2098（2337硬盘）之间，硬盘驱动器减少了27％。相反，发现CDD增加2倍。在同一时间轴上从167 CDD到401 CDD 4。此外，与农村地区相比，城市地区的平均硬盘驱动器减少量较小。对于CDD，城市地区和比利时东北部的绝对增长率更高。