A procedure for evaluating uncertainty associated with averaging or totalisation calculations on time-sampled data in gas energy measurements
Year: 2025
Type: article
Abstract: • A procedure for evaluating uncertainty associated with averaging or totalisation is developed. • Uncertainty contributions related to deterministic and random data variations are considered. • Guidelines for optimal selection of the procedure parameters are established. • The results on experimental and artificial data confirm reliable uncertainty estimation. The measurement uncertainty attributed to gas energy measurements includes, among others, a contribution for the calculation of the average/total from time-sampled data. The aim of this study is to establish and verify a procedure for the evaluation of this component of uncertainty, which considers contributions related to the deterministic and random variations of the measured data. The first step of the proposed procedure is a separation of deterministic and random components via time-domain filtering, followed by the evaluation of the uncertainty associated to the deterministic component by means of a decimation method and of the uncertainty associated to the random component by statistical analysis. The procedure concludes with the calculation of the combined uncertainty due to these effects. Basic guidelines for the optimal selection of procedure parameters related to filtering and decimation are discussed. Demonstration and verification of the proposed procedure on experimental time-sampled data for the superior calorific value and on artificially generated data confirms that the proposed procedure enables reliable and robust evaluation of the uncertainty.
Source: Measurement
Institutions: University of Ljubljana, VSL National Metrology Institute
Language: English
Subfield: Statistics, Probability and Uncertainty
Field: Decision Sciences
Domain: Social Sciences
Open Access status: hybrid
Estimated APC paid: $3,760
Award: Heat and Mass Transfer
OpenAlex ID: W4415447687