Limitations of the CIBSE design summer year approach for delivering representative near-extreme summer weather conditions

Limitations of the CIBSE design summer year approach for delivering representative near-extreme summer weather conditions
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CIBSE 设计夏季方法在提供代表性近极端夏季天气条件方面的局限性

DOI:
10.1177/0143624413478436
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发表时间:
2013
影响因子:
1.7
通讯作者:
Jentsch M
Jentsch M
中科院分区:
工程技术4区
文献类型:
--
作者:
Jentsch M

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具有代表性的特定场地天气数据是建筑性能模拟的关键要求。在英国,这些数据有两种格式,测试参考年用于分析“典型”年条件下的建筑服务负荷,设计夏季年用于估计自然通风和自由运行建筑物的夏季不适。目前,设计夏季年是根据4月至9月的平均干球温度等级确定的。这种方法的简单性不考虑个别月份的极端温度值或入射太阳辐射,然而,这两者对于建筑物的夏季过热性能具有重要意义。本文分析了这种简化的方法所产生的数据的影响。结果表明,设计夏季年份和相应的测试参考年份之间没有一致的关系,并且对于某些站点,使用设计夏季年份文件进行的建筑性能模拟结果不可靠。实际应用:本文表明,目前的方法推导设计夏季年(DSYs)可能会导致数据系列,不代表近-在特定地点的极端夏季条件下。它强调了一种新的方法来获得近极端的夏季建筑性能模拟年,以克服固有的缺陷,目前的DSY数据。
Representative, site-specific weather data is a key requirement for building performance simulation. In the UK, such data is available in two formats, Test Reference Years for analysing building services loads under ‘typical’ year conditions and Design Summer Years for estimating summer discomfort of naturally ventilated and free-running buildings. Currently, Design Summer Years are determined as a complete year based on the rank of the average dry bulb temperature from April to September. The simplicity of this approach does not take into account extreme temperature values in individual months or the incident solar radiation, both of which are however of great significance for the summer overheating performance of a building. This paper analyses the implications of this simplified approach for the resulting data. It is shown that there is no consistent relation between the Design Summer Years and the corresponding Test Reference Years and that, for some sites, building performance simulations using Design Summer Year files deliver unreliable results.Practical application: This paper demonstrates that the current approach for deriving Design Summer Years (DSYs) can lead to data series that are not representative for near-extreme summer conditions at a given location. It highlights that a new approach for deriving near-extreme summer years for building performance simulation is needed in order to overcome the inherent shortfalls of the current DSY data.
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