What is the raw CO concentration when the CO make is 48 l/m and the air quantity is 40m³/s?

What is the raw CO concentration when the CO make is 48 l/m and the air quantity is 40m³/s?

• A. 10 ppm
• B. 15 ppm
• C. 20 ppm
• D. 25 ppm

Answer: (C)

To determine the raw CO concentration in parts per million (ppm), it's essential to use the formula that relates the concentration of a gas in ppm to its mass flow rate and the volume of air flow. The concentration in ppm is calculated using the following formula: \[ \text{Concentration (ppm)} = \frac{\text{Gas Flow Rate (l/m)}}{\text{Air Flow Rate (m³/s)}} \times 1000 \text{ (to convert from l/m to ppm)} \] First, it's important to convert the air flow rate from cubic meters per second (m³/s) to liters per minute (l/m) since the CO flow rate is given in liters per minute. The conversion factor to remember is that 1 m³ equals 1000 liters, so: \[ \text{Air Flow Rate} = 40 \text{ m³/s} \times 1000 \text{ l/m³} \times 60 \text{ s/min} = 2400000 \text{ l/m} \] Now, substitute the CO make (48 l/m) and the air flow rate (2400000 l/m) into the concentration formula: \[ \text{

To determine the raw CO concentration in parts per million (ppm), it's essential to use the formula that relates the concentration of a gas in ppm to its mass flow rate and the volume of air flow. The concentration in ppm is calculated using the following formula:

[

\text{Concentration (ppm)} = \frac{\text{Gas Flow Rate (l/m)}}{\text{Air Flow Rate (m³/s)}} \times 1000 \text{ (to convert from l/m to ppm)}

]

First, it's important to convert the air flow rate from cubic meters per second (m³/s) to liters per minute (l/m) since the CO flow rate is given in liters per minute. The conversion factor to remember is that 1 m³ equals 1000 liters, so:

[

\text{Air Flow Rate} = 40 \text{ m³/s} \times 1000 \text{ l/m³} \times 60 \text{ s/min} = 2400000 \text{ l/m}

]

Now, substitute the CO make (48 l/m) and the air flow rate (2400000 l/m) into the concentration formula:

[

\text{