Evaluation of the precision and accuracy of the QUB/e method for assessing the as-built thermal performance of a low-energy detached house in UK

In this paper, the findings from a field study of thermal performance low-energy dwelling are presented and discussed. The aimed at evaluating precision accuracy QUB/e method in under UK climatic conditions. A series situ measurements were carried out detached house located University Park campus, Nottingham to determine both whole building Heat Transfer Coefficient (HTC) transmittances (U-values) external walls glazings. values determined with well-established quasi-static measurement methods (coheating test, ISO 9869-1 average method) used as reference (benchmark) assess method. total 18 consecutive tests conducted. was able provide precise accurate estimates HTC: 94% results (i.e. 17 18) found be within ± 15% mean 78% HTC (i.e., 14 obtained test could not considered statistically different coheating (benchmark). It should noted that reported confidence intervals associated slightly larger than one for 11.6% 6.1%, respectively). Mean Bias Error (MBE) Root Square (RMSE) approximately 11%. also We observed all but seven 119 126 or 94%) U-values With regard glazings, 162 100%). U-value close 10% average) elements except ICF wall.