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Air infiltration rate into room (CFM) Formula

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Air Infiltration Rate into Room is the volumetric flow rate of outside air into a building/room. Check FAQs

CFM = ACH \cdot (\frac{V}{60})

CFM - Air Infiltration Rate into Room?ACH - Number of Air Changes Per Hour?V - Room Volume?

Air infiltration rate into room (CFM) Example

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Here is how the Air infiltration rate into room (CFM) equation looks like with Values.

Here is how the Air infiltration rate into room (CFM) equation looks like with Units.

Here is how the Air infiltration rate into room (CFM) equation looks like.

6400 = 16 \cdot (\frac{400}{60})

6400ft³/min = 16 \cdot (\frac{400ft³}{60})

6400 = 16 \cdot (\frac{400}{60})

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Air infiltration rate into room (CFM) Solution

Follow our step by step solution on how to calculate Air infiltration rate into room (CFM)?

FIRST Step Consider the formula

CFM = ACH \cdot (\frac{V}{60})

Next Step Substitute values of Variables

∴

CFM = 16 \cdot (\frac{400ft³}{60})

Next Step Convert Units

∴

CFM = 16 \cdot (\frac{11.3267m³}{60})

Next Step Prepare to Evaluate

∴

CFM = 16 \cdot (\frac{11.3267}{60})

Next Step Evaluate

∴

CFM = 3.02046363651624m³/s

Next Step Convert to Output's Unit

∴

CFM = 6399.99999999999ft³/min

LAST Step Rounding Answer

∴

CFM = 6400ft³/min

Air infiltration rate into room (CFM) Formula Elements

Variables

Air Infiltration Rate into Room

Air Infiltration Rate into Room is the volumetric flow rate of outside air into a building/room.

Symbol: CFM

Measurement: Volumetric Flow RateUnit: ft³/min

Note: Value can be positive or negative.

Formulas to find Air Infiltration Rate into Room

Number of Air Changes Per Hour

Number of air changes per hour is a measure of the air volume added to or removed from a space in one hour, divided by the volume of the space.

Symbol: ACH

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Number of Air Changes Per Hour

Room Volume

Room volume is volume of the conditioned space under study or under consideration.

Symbol: V

Measurement: VolumeUnit: ft³

Note: Value can be positive or negative.

Formulas to find Room Volume

Other formulas in Cooling Loads category

Go Cooling load for roof, wall or glass given Corrected Cooling Load Temperature Difference

Q = U o \cdot A r \cdot CLTD c

Go Corrected Cooling Load Temperature Difference given Cooling Load Temperature Difference

CLTD c = CL Δt + LM + (78 - t r) + (t a - 85)

Go Average outside temperature on design day

t o = t od - (\frac{DR}{2})

Go Total heat removed from ventilation air

Q t = Q s + Q lv

How to Evaluate Air infiltration rate into room (CFM)?

Air infiltration rate into room (CFM) evaluator uses Air Infiltration Rate into Room = Number of Air Changes Per Hour*(Room Volume/60) to evaluate the Air Infiltration Rate into Room, Air infiltration rate into room (CFM) formula is defined as the measure of the flow rate of outdoor air that infiltrates into a room through cracks, crevices, and other openings, typically measured in cubic feet per minute, which affects the indoor air quality and building energy efficiency. Air Infiltration Rate into Room is denoted by CFM symbol.

How to evaluate Air infiltration rate into room (CFM) using this online evaluator? To use this online evaluator for Air infiltration rate into room (CFM), enter Number of Air Changes Per Hour (ACH) & Room Volume (V) and hit the calculate button.

FAQs on Air infiltration rate into room (CFM)

What is the formula to find Air infiltration rate into room (CFM)?

The formula of Air infiltration rate into room (CFM) is expressed as Air Infiltration Rate into Room = Number of Air Changes Per Hour*(Room Volume/60). Here is an example- 1.4E+7 = 16*(11.3267386369359/60).

How to calculate Air infiltration rate into room (CFM)?

With Number of Air Changes Per Hour (ACH) & Room Volume (V) we can find Air infiltration rate into room (CFM) using the formula - Air Infiltration Rate into Room = Number of Air Changes Per Hour*(Room Volume/60).

Can the Air infiltration rate into room (CFM) be negative?

Yes, the Air infiltration rate into room (CFM), measured in Volumetric Flow Rate can be negative.

Which unit is used to measure Air infiltration rate into room (CFM)?

Air infiltration rate into room (CFM) is usually measured using the Cubic Foot per Minute[ft³/min] for Volumetric Flow Rate. Cubic Meter per Second[ft³/min], Cubic Meter per Day[ft³/min], Cubic Meter per Hour[ft³/min] are the few other units in which Air infiltration rate into room (CFM) can be measured.

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Air infiltration rate into room (CFM) Formula

Air infiltration rate into room (CFM) Example

Air infiltration rate into room (CFM) Solution

Air infiltration rate into room (CFM) Formula Elements

Other formulas in Cooling Loads category

How to Evaluate Air infiltration rate into room (CFM)?

FAQs on Air infiltration rate into room (CFM)

Variable Name