Building airtightness is a critical aspect for energy-efficient buildings as the energy performance of a building can be significantly reduced by poor airtightness. The Pulse technique has been regarded as a promising technology, measuring building airtightness at a low pressure of 4 Pa. However, due to the rapid dynamic nature of the test, a frequently raised question concerns the uniformity of the pressure distribution across the internal space of the test building during the air pulse release. In order to investigate this point, experimental work was conducted in a five-bedroom dwelling. All the tests were conducted at wind speeds less than 0.45 m/s to minimise the wind impact on the indoor pressure. The results show a pressure difference within the building during the Pulse test does exist, but considering the accuracy of differential pressure transducers, the deviation is not significant. In addition, a subtle variation is noted when the Pulse test was conducted at different locations on the ground floor, which may also be caused by variations in the environmental conditions. In terms of the airtightness measurement, a good overall agreement was found between the Pulse technique and the conventional blower door fan pressurisation method, which indirectly verified the uniformity of the indoor pressure distribution during both tests. Moreover, the error analysis demonstrated the validity of the measurement results for the two test methods in this study.

建筑物的气密性是节能建筑的关键方面，因为不良的气密性会大大降低建筑物的能源性能。脉冲技术被认为是一种有前途的技术，它可以在4 Pa的低压下测量建筑物的气密性。但是，由于该测试具有快速的动态特性，因此经常提出一个问题，涉及整个空间内部压力分布的均匀性。空气脉冲释放期间的测试建筑物。为了调查这一点，在五居室住宅中进行了实验工作。所有测试均在小于0.45 m / s的风速下进行，以最大程度地减小风对室内压力的影响。结果显示，在Pulse测试期间，建筑物内部确实存在压力差，但是考虑到差压传感器的精度，偏差并不明显。另外，当在地面上的不同位置进行脉冲测试时，会注意到细微的变化，这也可能是由于环境条件的变化而引起的。在气密性测量方面，在Pulse技术和常规鼓风机门风扇增压方法之间找到了良好的总体协议，该方法间接验证了两次测试期间室内压力分布的均匀性。此外，误差分析证明了本研究中两种测试方法的测量结果的有效性。这也可能是由于环境条件的变化而引起的。在气密性测量方面，在Pulse技术和常规鼓风机门风扇增压方法之间找到了良好的总体协议，该方法间接验证了两次测试期间室内压力分布的均匀性。此外，误差分析证明了本研究中两种测试方法的测量结果的有效性。这也可能是由于环境条件的变化而引起的。在气密性测量方面，在Pulse技术和常规鼓风机门风扇增压方法之间找到了良好的总体协议，该方法间接验证了两次测试期间室内压力分布的均匀性。此外，误差分析证明了本研究中两种测试方法的测量结果的有效性。