Alexandr

Hi, Martin Thanks for your comments. After reviewing your solution and reading additional literature, I am convinced that the actual NO2: NOx ratio is no more than 5%. The Excel file contains the results of the actual measurements. As can be seen from the document NO2 / NOx is about 80%. As far as I understand, this is possible only in the atmosphere of the earth's surface with the participation of O3 and ultraviolet radiation, but not in the mine workings. Or the measurement was performed with an error. Converting g / kWhr to mg / m3 and vice versa is similar to my version. I don't quite understand the ratio of 24.45 in the calculation. I gave 2 options for translating mg / m3 to ppm and the calculation of mg / m3 to gkW / h. Also note how we calculate NOx in ppm and mg / m3. How do you get NOx (heat preset) if there was only NO (measured) ? Best wishes, Balusov Alexander, lead engineer dieseldata1.xlsx

Hi, I simulate the spread of exhaust gases from diesel engines. Found 2 ways to solve this problem - slide 1. Method 1 - modeling of the exhaust gas content and volumetric air flow (which were measured), the "Gas" tab. Method 2 - through the engine power and the debit of harmful substances, the "Heat" tab. The recalculation was carried out according to the formulas - slide 2. The initial data were entered into the model in the appropriate tabs, the results are presented on slides 3, 3.1, 4. There are questions: I would like to know which option is more correct? Why is the ratio of NO and NO2 in NOx different when calculated by heat (slide 5)? Why do the indicators of CO content differ in variants 1 and 2 of the calculation (slide 6)? Is there a way to determine the content of harmful substances along the entire path of the vehicle? Best wishes, Balusov Alexander, lead engineer Diesel.vsm