Investigation of NO_X Measurement for Practical Use

概要

論文の詳細を見る
It is important to establish reliable and practical measurement methods in order to ensure that regulatory requirements are being implemented properly. This is particularly so with respect to the new MARPOL Annex VI requirements regarding NO_X exhaust emissions from ships due to come into effect in the year 2000. The aim of this research is not only to determine the state of emissions but also to propose a suitable method of measuring such emissions. The Authors have been carrying out measurements of nitrogen oxide emissions from a number of different marine diesel engines for a total of 29 cases, including during shop trials and sea trials, for the last several years. This paper first present a brief overview of the measurement results of nitrogen oxides carried out by the authors. This is followed by a discussion of the quantitative studies carried out using statistical analysis to examine whether the methods of measurement can be simplified or not. The following observations can be noted from these analyses: ・It was demonstrated that the accuracy of the measurements is within ±5% at a sample size of four (or larger) for NO_X measurements. ("Sample size" means the number of measurements repeated under the same measurement conditions) ・There is a significant difference between measured NO_X results obtained during sea trials and those obtained during shop trials. ・There is a significant difference between the results measured using the chemiluminescent method and those obtained with the electrochemical cell method about NO_X. Results of this analysis show that may be feasible to use a procedure which is simpler than the one indicated in ISO 8178 for part of the measuring method.
財団法人日本海事協会の論文

Investigation of NO_X Measurement for Practical Use

スポンサーリンク

概要

著者

関連論文

スポンサーリンク