How do you convert cubic feet per minute (CFM) to liters per second (L/s)?

To convert cubic feet per minute (CFM) to liters per second (L/s), you need to understand the relationship between the two units of volume flow rate.

One cubic foot is equivalent to approximately 28.3168 liters. Since the conversion is from minutes to seconds, you must also consider the time factor: there are 60 seconds in a minute.

To derive the conversion factor:

1. First, convert cubic feet to liters:

• 1 CFM = 1 cubic foot/minute = 28.3168 liters/minute

2. Next, convert minutes to seconds:

• 28.3168 liters/minute divided by 60 seconds/minute = 0.47194667 liters/second

This calculation can be rounded to approximately 0.471947, which is the factor used for converting CFM to L/s. Therefore, multiplying CFM by this conversion factor correctly converts the flow rate from cubic feet per minute to liters per second.

Utilizing this factor allows for accurate conversions that are essential in HVAC applications where different countries and designs may use varied units of measurement. Thus, choosing the option that utilizes this accurate conversion factor is the correct approach.