A progressive comparison of the novel pulse and conventional steady state methods of measuring the airtightness of buildings
A progressive comparison of the novel pulse and conventional steady state methods of measuring the airtightness of buildings
复制标题
测量建筑物气密性的新型脉冲方法和传统稳态方法的逐步比较
DOI：
10.1016/j.enbuild.2022.111983
复制
发表时间：
2022
影响因子：
6.7
通讯作者：
Zheng X
中科院分区：
文献类型：
--
作者：
Zheng X
与在高压下进行气密性测量的稳定风扇增压方法（FP）不同，Pulse技术采用动态方法并提供低压测量。尽管测量压力不同，但在研究和实践中，对两种方法给出的结果进行直接比较的兴趣仍然很强。在测试典型住宅时，由于Pulse的低压测量，在重叠压力范围内进行比较会遇到困难。在本文中，实验研究进行了两个独立的研究，使测量在室外和室内环境下的重叠的压力范围。在室外环境中的结果表明，FP安装可以占测试空间的空气泄漏的显着比例，特别是那些与气密外壳，从而导致两种测试方法之间的偏差（42-60%）。当在FP框架周围施加密封时，这种偏差减小。结果表明，在室内环境中，室外环境条件的影响，安装和模型差异减少，在一个范围内的泄漏水平实现了更好的协议（0.6-9.6%）。
Differing from the steady fan pressurisation method (FP) that takes airtightness measurement at high pressures, the Pulse technique takes a dynamic approach and offers low-pressure measurements. Despite different measurement pressures, the interest for direct comparison between the results given by both methods remains strong in research and practice. When testing a typical dwelling, achieving a comparison in an overlapped pressure range comes with difficulties due to Pulse’s low-pressure measurement. In this paper, experimental investigations were performed in two independent studies to enable measurements over an overlapped pressure range under both outdoor and indoor environments. Results in the outdoor environment showed that the FP installation could account for a significant proportion of the air leakage of tested spaces in particular the ones with an airtight enclosure, thereby contributing to the deviation (42-60%) between both testing methods. Such deviation was reduced when sealing is applied around the FP frame. Results in the indoor environment where the impact of outdoor environmental conditions, installation and model difference was reduced showed that a better agreement (0.6-9.6%) was achieved in a range of leakage levels.
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