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Julkaisut julkaisuvuoden mukaan
Interlaboratory Proficiency Test 07/2017 - Gross and net calorific values in fuels
Julkaisusarja ja numero:
Reports of the Finnish Environment Institute 35/2017
Mirja Leivuori, Minna Rantanen, Riitta Koivikko, Keijo Tervonen, Sari Lanteri and Markku Ilmakunnas
Proftest SYKE arranged the proficiency test (PT) for measurement the gross and the net calorific value, the content of ash, carbon, nitrogen, hydrogen, moisture, sulphur and volatile matter in peat, wood pellet (not sulphur) and coal samples in September 2017. In total, there were 26 participants in the PT. Also, the participants had the possibility to calculate the emission factor for the peat and coal samples. In total, 89 % of the participants reported satisfactory results when the deviations of 1–30 % from the assigned values were accepted. In measurement of the gross calorific value from the peat sample 100 %, from the wood pellet sample 83 % and from the coal sample 94 % of the results were satisfactory. In measurement of the net calorific value from the peat sample 100 %, from the wood pellet 83 % and from the coal sample 92 % of the results were satisfactory. The robust mean or mean of the reported results by the participants were used as the assigned values for measurements. The evaluation of performance was based on the z and En scores. The evaluation of performance was not done for the measurement of Mad in all samples, Hd in the peat sample and Nd in the wood pellet sample. Warm thanks to all the participants of this proficiency test!