20.500.12556/RUL-175460 A procedure for evaluating uncertainty associated with averaging or totalisation calculations on time-sampled data in gas energy measurements 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. gas energy measurement time-sampled data deterministic variations random variations time-domain filtering measurement uncertainty true false true Angleški jezik Ni določen Članek v reviji 2025-10-28 11:52:16 2025-10-28 11:52:34 2026-06-13 04:29:36 0000-00-00 00:00:00 2026 0 0 8 str. pt. D, art. 119413 Vol. 258 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531.733 0263-2241 10.1016/j.measurement.2025.119413 255055107 1-s2.0-S0263224125027721-main.pdf 1-s2.0-S0263224125027721-main.pdf 1 A98D0F6CAE1C1B82F2B93AD5158B8DEB 95f4cc1ffe5f447e43347a994acfefc5732c95f56004a62ced9faea5b31c09e7 def3a49f-6654-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=235475 https://www.sciencedirect.com/science/article/pii/S0263224125027721 1 ec617ba4-b3eb-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=221029 Fakulteta za strojništvo 0 0 0