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Suitable for all typists including absolute beginners, “Let’s Try Again” typists and “Need a Refresher” typists. V(m 3/min) = (gas velocity, m/s) * * 60 s/minĢ.A fully featured typing tutor that teaches typing for life. The first step is to calculate the stack's volumetric gas flow rate (V) using the formula below: To illustrate this method the data in Example 3 was assigned to the fluidized bed prilling process used in urea production.ġ. For example, you may choose to use this method if the process line is only operation for part of the year or the production rate fluctuates with demand for the product. This data can be used to more accurately estimate CAC releases taking into account the process variations and production rates. Most facilities participating in a stack testing program will have information on the production rate during the test period and total annual production.
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The first step is to convert from ppm (mass) to the mass emission rate as follows:Įxample 5 - Calculating CAC Releases from Source Testing and Total Production DataĪnother method that can be used to estimate your CAC releases is to correlate your stack testing data with the facility's production data. To illustrate this method the data in Example 2 was assigned to a boiler burning bituminous coal.ġ. For example, you may choose to use this method if the equipment is only operation for part of the year or the fuel feed rate fluctuates based on the facility's production rate. Many facilities participating in a stack testing program will have information on the fuel feed rate during the test period and total annual fuel consumption. The stack is operational 24 hours a day, 365 days a year.Ī) Convert from ppm to g/tonne by using the conversion of:Įxample 4 - Calculating CAC Releases from Source Testing and Fuel Consumption Data Use the stack mass flow rate (kg/min) to Convert to mass emission rate.Įxample: The TPM emission rate from the stack is 250 ppm (mass).
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The first step is to convert from ppm (mass) to the mass emission rate as follows:.This same method can be used for PM 10 and PM 2.5 as well. This example will walk you through the process of converting from ppm (mass) to an annual mass release in tonnes for TPM. Before you can use these number to estimate your releases of these substances for the NPRI you need to convert from ppm (mass) to a mass release in tonnes. If you have had your stack tested for total particulate matter (TPM), PM 10 or PM 2.5 you will notice that the results from the laboratory are usually in the units of parts per million mass or ppm (mass). Example 2 - Converting CAC Releases from ppm (mass) to tonnes