In this paper the findings from a long-term field study of the thermal performance of a circa 1950s dwelling are presented and discussed. The study aimed at evaluating the robustness of the QUB method in the field under UK climatic conditions. A series of 147 QUB tests were performed during the whole heating period (September 2016 – March 2017) in a detached house located in the University Park campus, University of Nottingham considering two distinct conditions: as-built and with increased airtightness.

The QUB method was able to provide consistent and robust estimates of the Heat Transfer Coefficient (HTC) of the whole dwelling with approximately 80% of the results within $\pm$10% from the mean and more than 95% of the results within $\pm$15%. The need to treat heat losses occurring through the ground when assessing the thermal performance of buildings through experimental diagnostics methods was highlighted, especially in uninsulated concrete slab floors. The method devised to isolate the ground floor heat losses from the whole building losses resulted in reduced dispersion of the adjusted Heat Transfer Coefficient with a coefficient of variation of 5% and 98% of results within $\pm$10% from the mean.

本文介绍并讨论了对1950年代左右住宅的热性能进行长期野外研究的结果。该研究旨在评估英国气候条件下QUB方法在野外的稳健性。在整个供暖期（2016年9月至2017年3月）中，在诺丁汉大学大学公园校区的一栋独立房屋中进行了147次QUB测试，考虑了两个不同的条件：竣工和气密性提高。

QUB方法能够对整个住宅的传热系数（HTC）提供一致且可靠的估计，其中大约80％的结果在 $\pm$平均值的10％，结果的95％以上 $\pm$15％。通过实验诊断方法评估建筑物的热性能时，特别是在非绝缘混凝土楼板地板中，需要处理由于地面产生的热量损失。该方法旨在将地面热量损失与整个建筑物损失隔离开来，从而减少了调整后的传热系数的分散性，变异系数为结果的5％和98％$\pm$平均值的10％。