Cfm to fpm calculator

Eq. 1. V = C [ ( 2 · pw · gc / ρ ) ]0.5. where. V = velocity of the fluid (ft / sec) pw = velocity pressure (pitot-tube manometer reading) (inches of water) gc = gravitation constant (32.174 lbm-ft / lbm-sec 2) C = unit conversion factor = 136.8. ρ = density of air, lbm/ft 3. The type of manometer or differential pressure transducer used ...

Cfm to fpm calculator. Feb 14, 2024 · Example. Suppose a duct with an area of 5 square feet and the air is moving at a velocity of 200 feet per minute (FPM), you can find the Cubic Feet per Minute (CFM) using this formula: CFM = (Area in square feet) x (FPM) Substituting the values: CFM = 5 sq ft x 200 FPM = 1000 CFM. So, the airflow rate in this duct is 1000 CFM.

preston football club team of the century; dr figueroa plastic surgeon tampa; unipi graduatorie professioni sanitarie 2020; troppo bicycle company net worth 2020

Your net worth is about more than just money in your bank account, but calculating it is as easy as one, two, three — almost. Daye Deura Net worth can be a confusing concept to wra...Mar 6, 2024 · Example of Feet Per Minute to CFM Calculator. Let’s consider a duct with a cross-sectional area of 2 square feet through which air moves at a speed of 300 feet per minute. Using our formula: CFM = 300 FPM * 2 square feet = 600 CFM. This calculation reveals that 600 cubic feet of air pass through the duct every minute, providing a clear ... See full list on learnmetrics.com The CFM to Static Pressure Calculator is a tool used in HVAC (Heating, Ventilation, and Air Conditioning) systems to convert airflow rate in cubic feet per minute (CFM) to the corresponding static pressure. Static pressure is a measure of the resistance to airflow in a duct or system, and it is crucial for proper design and operation of HVAC ...Here are the results: The result is clear. For a 1,000 sq ft room with an 8 ft ceiling and 4 ACH, you need a fan capable of delivering 533 CFM airflow. Let’s use the CFM …CFM, or cubic feet per minute, is a unit of measure used for volume flow (usually for fans). To calculate CFM, we have to determine the volume of any room in cubic feet, multiply it by its recommended ACH, and divide everything by 60 minutes per hour. Below is the formula for CFM airflow: airflow = room's floor area × ceiling height (ft) × ...CFM = FPM × Area. Equation for calculate FPM to CFM. Formula for fpm to cfm calculation.

Jan 6, 2024 · The Convert CFM (Cubic Feet per Minute) to FPM (Feet per Minute) Calculator simplifies the conversion process from a volume flow rate to a velocity measure. It provides a quick solution to determine the speed at which air moves when given the volume of air passing through a specific area within a minute. Example. Suppose a duct with an area of 5 square feet and the air is moving at a velocity of 200 feet per minute (FPM), you can find the Cubic Feet per Minute (CFM) using this formula: CFM = (Area in square feet) x (FPM) Substituting the values: CFM = 5 sq ft x 200 FPM = 1000 CFM. So, the airflow rate in this duct is 1000 CFM.: Get the latest CFM Holdings stock price and detailed information including news, historical charts and realtime prices. Indices Commodities Currencies Stocks This 1st calculator automatically converts CFM to FPM for round ducts (you insert FPM, and the diameter of the duct, and you get CFMs). We will explain how to use the formula to calculate this as well. CFM = SCFM × (14.7 psi ÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60°F temperature and 16 psi pressure is equal to 452.41 CFM. You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM metrics. From experience, we all know that warmer air …Convert feet per minute (FPM) from cubic feet per minute (CFM) area values using this online tool. Enter CFM and get FPM values in SI or general units, and …

CFM stands for Cubic Feet per Minute and is the most common way to measure airflow. Areas are measured in square units (like square feet). Volumes (like a room full of air) are measured in cubic units — CFM determines how much cubic feet can be moved or exchanged each minute. A room measuring 1,000 ft³ would need a 1,000 CFM system to ...Below you will also find an SCFM to CFM calculator that automatically converts SCFM to CFM. Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM × (14.7 psi÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) From experience, we all know that warmer air rises (due to lower density).How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. YouInput CFM: Enter the CFM value, which represents the volume of air moved by the fan or blower. Fan Efficiency: Insert the fan efficiency, expressed as a decimal (e.g., 0.85 for 85% efficiency). Fan Area: Provide the fan area, usually in square feet. Calculate: Click the “Calculate” button to obtain the static pressure in inches of water ...Cubic feet per minute (CFM) is a unit to measure the velocity of the flow of air. It can be expressed as ft 3 /min. Enter the FPM value and the area in measurements of your …This flow rate calculator uses flow velocity and cross-sectional flow area data to determine the volumetric flow rate of liquid. You can calculate the flow rate in five simple steps: Select the shape of the cross-section of the channel. Input all the measurements required to compute the cross-sectional area. Input the average velocity of the flow.

Jon taffer salary per episode.

To convert lb/in 2 to bar, use the conversion factor. 1 bar = 14.5037744 lb/in 2. then divide both sides of the equation by bar, to get the conversion ratio. 1 = 14.5037744 lb/in 2 / bar. Use the conversion ratio to complete the unit conversion, basically dividing the input by 1, the lb/in2 units cancel out, and we are left with bar units.Formula of CFM PSI Calculator. The formula used by the CFM PSI Calculator is as follows: CFM = (RPM * displacement) / (2.036 * PSI) Where: CFM is the Cubic Feet per Minute, representing the volume of air flow. RPM is the Rotations Per Minute of the compressor, indicating the speed at which the compressor operates.Formula: Diameter = √ ( (576 × A) / (3.14 × V)) Where, A = Air Flow. V = Air Flow Velocity. Online duct size cfm calculation. Use this simple science duct size cfm calculator to calculate diameter.To calculate a fan's airflow capacity in cubic feet per minute (cfm), multiply the average airspeed in feet per minute (fpm) by the square footage of the fan face. (The area of a circle is equal to bd^2/4, where d is the diameter in feet.) 2.By using this equation, we can determine the size of the return grille we need for 400 CFM airflow like this: Grille Area (400 CFM) = 400 CFM ÷ 500 FPM ÷ 0.7 × 144 = 164 Sq In. That means we will need a grill with at least 164 square inches of area to accommodate for a 400 CFM airflow. 10×10 grille, for example, has a 100 sq in area; it ...

By Ezmeralda Lee A graphing calculator is necessary for many different kinds of math. Not only does it do math much faster than almost any person, but it is also capable of perform...Let’s put all of this in the equation like this: CFM (12-Inch Round Duct, 20 FPS) = 20 FPS × π × (12 Inches)2 × 60 / (4 × 144) = 942.48 CFM. At 20 FPS air velocity, a 12-inch round duct will produce 942.28 CFM. You can use the 1st calculator above to confirm this result. This is just 1 example for round ducts.Formula: Diameter = √ ( (576 × A) / (3.14 × V)) Where, A = Air Flow. V = Air Flow Velocity. Online duct size cfm calculation. Use this simple science duct size cfm calculator to calculate diameter.Enter site Barometric pressure in PSIA, this will be dependent on elevation. Relative Humidity. Enter Relative Humidity as a percent, ie. 80% Relative Humidity is entered as 0.80. ACFM. Actual Cubic Feet per Minute. This calculator is for converting SCFM (Standard Cubic Feet per Minute) into ACFM (Actual Cubic Feet Per Minute). FPM to CFM Calculator: Usually, volume flow is measured in Cubic Feet per Minute, but at times we require to convert ft3/min to ft/min. Use this simple online FPM to CFM calculator to convert feet per minute (FPM) to cubic feet per minute (CFM) based on the area as input. Just input the value of foot per minute and area, the tool will update ... Measure the volume of your space (including L’ x W’ x H’) Multiply the space volume with the required air changes. Divide it by 60 minutes. Here’s an example: Suppose: space volume = 18x24x10, ACH = 10. Put the values in the cubic feet per minute equation: CFM = Space volume x ACH / 60 minutes. CFM = 18x24x10 x 10 / 60 = 720.Think of it as the balance in a complex recipe—just the right mix ensures perfection. Here’s the formula to break it down: airflow (CFM)= room’s floor area (sq.ft.) × ceiling height (ft.)× ACH÷60. airflow (CFM): The air volume flow rate you need in the room. room’s floor area (sq.ft.):The calculator employs critical parameters, including the room’s volume and the desired air changes per hour, to deduce the exact CFM required for the room. Formula with Variables Description. CFM = Room Volume×Air Changes per HourRoom Volume×Air Changes per Hour / 60. Where: Room Volume is the volume of the room in cubic feet.May 29, 2018 ... To calculate Air Flow in Cubic Feet per Minute (CFM), determine the Flow Velocity in feet per minute, then multiply this figure by the Duct ... Cubic feet per minute (CFM) is a unit to measure the velocity of the flow of air. It can be expressed as ft 3 /min. Enter the FPM value and the area in measurements of your choice such as mm 2, acre, m 2 and so on, in this Feet per minute to cubic feet per minute calculator to convert FPM to CFM (ft/min to ft3/min).

May 9, 2023 ... Vacuum & Flow Unit Calculator. Home/Vacuum & Flow ... Vacuum Unit Conversion Calculator. mbar, torr ... CFM. l/sec. LPM. m3/hr. *Gauge, or relative ...

The conversion formula used by the CFM to FPM Calculator is straightforward: FPM = CFM * 196.8504. Where: FPM is the resulting velocity measured …Now, multiply 3 x 400 CFM to get 1200. You would need a blower that can move 1200 CFM. Pro Tip: Round up – If you’re more than halfway to the next larger size, round up to it. In our example, if you needed 33,500 BTU, or 2.75 tons, round up to 3 tons and multiply by 400 CFM per ton for the same result – 1,200 CFM.Jul 2, 2022 ... What velocity did you measure? 600 CFM at 5" would be about 4400 FPM or about 50 mph, if I did the quick calculation correctly. Also, what do ... Free online flow converter - converts between 58 units of flow, including cubic meter/second [m^3/s], cubic meter/day [m^3/d], cubic meter/hour [m^3/h], cubic meter/minute, etc. Also, explore many other unit converters or learn more about flow unit conversions. Your net worth is about more than just money in your bank account, but calculating it is as easy as one, two, three — almost. Daye Deura Net worth can be a confusing concept to wra...When it comes to determining the value of a business, there are several methods that are commonly used. The most appropriate method depends on the When it comes to determining the ...Volume flow is usually measured in Cubic Feet per Minute (CFM). Concept of Air Velocity can be used in air conditioning, heating and ventilating work. Enter value, select unit and click on calculate. Result will be displayed. Air Flow: LFM m/s MPH CFM m^3/hr L/s. Rectangle Duct.Saving enough for a comfortable retirement is one of the most important—and challenging—financial tasks we all have to do. A recent study suggests that you can dramatically improve...Example of Feet Per Minute to CFM Calculator. Let’s consider a duct with a cross-sectional area of 2 square feet through which air moves at a speed of 300 feet per minute. Using our formula: CFM = 300 FPM * 2 square feet = 600 CFM. This calculation reveals that 600 cubic feet of air pass through the duct every minute, providing a clear ...

Cvs manhattan beach rosecrans.

College gameday aflac trivia question today.

Equation for calculate cfm to fps is, FPS = Area ÷ CFM. Equation for calculate CFM to FPS.Saving enough for a comfortable retirement is one of the most important—and challenging—financial tasks we all have to do. A recent study suggests that you can dramatically improve...Formula: Diameter = √ ( (576 × A) / (3.14 × V)) Where, A = Air Flow. V = Air Flow Velocity. Online duct size cfm calculation. Use this simple science duct size cfm calculator to calculate diameter.Formula of RPM to FPM Conversion Calculator. The formula to convert RPM to FPM is as follows: FPM = RPM * Diameter (in feet) * π (pi) Here’s a breakdown of the variables: FPM: This represents the linear velocity or speed in feet per minute you are solving for. RPM: This denotes the rotational speed in revolutions per minute you are given.SO you take the width and height of the paint booth x 100 FPM and will provide the exhaust speed in Cubit Feet a minute. Lets take two quick examples to best understand the math. Crossdraft Paint Booth is 6 feet wide x 8 feet high your air flow will be 6 feet x 8 feet x 100 FPM = 4,800 CFM per minute. You have a Crossdraft Paint Booth … This 1st calculator automatically converts CFM to FPM for round ducts (you insert FPM, and the diameter of the duct, and you get CFMs). We will explain how to use the formula to calculate this as well. To convert cubic feet per minute to liters per second, multiply the cubic feet per minute value by 0.47194745 or divide by 2.1188799728. As an example, let's convert 500 cubic feet per minute (cfm) to liters per second (L/s). To do this, divide 500 by the conversion factor of 2.1188799728. Therefore, 500 cfm is equivalent to approximately 235. ...I feel like graphing calculators were only really a “thing” for most people during that year or two of high school when you were forced to use one for whatever math class you were ...Formula: FPS = Area ÷ CFM. Online CFM to FPS unit converter calculator helps to calculate feet per second (FPS) from cubic feet per minute (CFM) area values as input.Enter both the height and width values. Enter the flow rate and click on Calculate. In our example, the height and width of the carrier are each 8 inches while the flow rate is 2700 linear feet per minute. The yield is 1200 cubic feet per minute. This script calculates a flow rate of cubic feet per minute from linear feet per minute. ….

The primary equation utilized by the calculator is: CFM = ( Air − to − ClothRatio )× ( AirFlowthroughtheCollector) Where: Air-to-Cloth Ratio is the measure of the filter cloth area in square feet to the air volume in CFM. Air Flow through the Collector is the rate of air passing through the collector, also measured in CFM.Step Four: Calculate the CFM Needed. To calculate the CFM needed to ventilate a space with a single air change per hour, you can use the following formula: CFM = cubic feet ÷ 60. So, the cubic feet per minute of airflow needed to ventilate a space with a single air change per hour is equal to the volume of the space in cubic feet divided by 60. Step Four: Calculate the CFM Needed. To calculate the CFM needed to ventilate a space with a single air change per hour, you can use the following formula: CFM = cubic feet ÷ 60. So, the cubic feet per minute of airflow needed to ventilate a space with a single air change per hour is equal to the volume of the space in cubic feet divided by 60. Answer #1: 350 – 400 CFM per ton of HVAC capacity. That’s the answer to the question: What CFM do I need for my HVAC system to do its job? This answer of 350-400 cubic feet per minute for each 12,000 BTUs of AC cooling is optimal for the system to run efficiently while adequately cooling and dehumidifying the space. 12,000 BTUs = 1 TonThis flow rate calculator uses flow velocity and cross-sectional flow area data to determine the volumetric flow rate of liquid. You can calculate the flow rate in five simple steps: Select the shape of the cross-section of the channel. Input all the measurements required to compute the cross-sectional area. Input the average velocity of the flow.Volume flow is usually measured in Cubic Feet per Minute (CFM). Concept of Air Velocity can be used in air conditioning, heating and ventilating work. Enter value, select unit and click on calculate. Result will be displayed. Air Flow: LFM m/s MPH CFM m^3/hr L/s. Rectangle Duct.1 cfm = 1.69901082000001 cubic m/hr. Where, cubic m/hr = cubic metre/hour. cfm = cubic foot/minute. Online CFM to CMH Converter. Use this simple airflow converter tool to calculate cfm to cmh cubic m/hr online.This is the number you will match your filter to. Example: Room size: 10’x12’x8’ (960 cubic feet) 960 cubic feet / 3 minutes = 320CFM (Minimum recommended CFM to exchange the air every 3 minutes) For recirculating systems, you can use the same length x width x height but divide by 1.5. This will give you a high cycle rate while still ...Convert CFM to FPM Calculator Online. The Convert CFM (Cubic Feet per Minute) to FPM (Feet per Minute) Calculator simplifies the conversion process from a volume flow rate to a velocity measure.See also 4 To 20 MA Calculator Online. Suppose we have an air duct with a velocity of 500 feet per minute (FPM) and a cross-sectional area of 10 square feet. Using the formula mentioned earlier: CFM = (500 * 10) / 144 = 5000 / 144 ≈ 34.72 CFM. Therefore, the cubic feet per minute (CFM) of air flowing through the duct is approximately 34.72 CFM. Cfm to fpm calculator, 1.8 square feet x 100 fpm = 180 CFM So in this case, you would need your exhaust fan to be able to draw 180 CFM. Our catalog listing for 50000-0002 lists that an even 200 CFM needed, rounding up from the 180 CFM, You can use the formula: FPM = (150 CFM) / (5 sq ft) = 30 FPM. So the air flow velocity in this duct is 30 FPM. My Calculator World helps you convert and solve math problems., Many landlords charge a late rent fee when the rent is even a few days past due. There are legal restrictions on how much the landlord can charge and when the late fee kicks in. Re..., The formula for calculating BTU loss or gain in converting CFM to BTU is temperature difference times actual CFM leakage times 1.08 equals BTU loss or gain. CFM is the actual cubic..., The CFM Calculator for Air Compressors is a specific type of calculator that computes the CFM (Cubic Feet per Minute), indicating the compressor's ability to produce compressed air. CFM, a crucial factor in compressor performance, is the measure of the volume of air a compressor can supply within one minute., I feel like graphing calculators were only really a “thing” for most people during that year or two of high school when you were forced to use one for whatever math class you were ..., CALCULATIONS The Pitot tube is the primary standard used to calibrate all other air-flow measuring devices. Therefore, it is a natural application for use in devices that measure airflow in ducts and pipes for HVAC or industrial, For instance, if your bathroom is 60 square feet (5.6 m 2) and your ceiling is 10 feet (3.0 m) tall, multiply them together to get 600. Divide 600 by 60 to get 10. Then multiply 10 by 8 to get 80 as the ideal CFM for your fan. 5. Include fixtures for bathrooms larger than 100 square feet (9.3 m2)., Cubic feet per minute (CFM) is a unit to measure the velocity of the flow of air. It can be expressed as ft 3 /min. Enter the FPM value and the area in measurements of your choice such as mm 2, acre, m 2 and so on, in this Feet per minute to cubic feet per minute calculator to convert FPM to CFM (ft/min to ft3/min)., Example of Work and Power Calculator. Let’s walk through a practical example to illustrate how the Work and Power Calculator works. Imagine you’re lifting a 10-kilogram object with a force of 50 newtons at an angle of 30 degrees to the horizontal. You want to know the work done and the power exerted. Here’s how you can use the …, More information from the unit converter How many l/s in 1 cfm? The answer is 0.47194745. We assume you are converting between litre/second and cubic foot/minute.You can view more details on each measurement unit: l/s or cfm The SI derived unit for volume flow rate is the cubic meter/second. 1 cubic meter/second is equal to 1000 l/s, or 2118.8799727597 …, Air Flow Conversion Calculator. CUI Devices' air flow conversion calculator can be used to convert between common units for volume air flow and air velocity flowing past a point in a specified area of duct. To use the calculator, enter your air velocity or volume air flow and duct area/type, select your units, click calculate air flow, and your ..., The recommended velocity for flexible duct typically ranges from 700 to 900 feet per minute (FPM) for supply ducts and 600 to 800 FPM for return ducts. How much static pressure is too much? Static pressure exceeding 0.5 inches of water column is generally considered high and can lead to reduced airflow and efficiency issues in the HVAC system., Convert between volume flow units like gpm, liter/sec, cfm, m 3 /h . Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Convert between volume flow units like gpm, liter/sec, cfm, m 3 /h ., This CFM calculator determines the appropriate airflow requirements for a given space, taking into account the room size and recommended air changes per hour (ACH). What Is CFM? CFM (Cubic Feet Per Minute) is the unit of measurement that is used to measure the volume of air passing through a given space in one minute., First, determine the total amount of air intake of the engine. For this example problem, the air intake is at a rate of 500 CFM. Next, use the formula above to estimate the horsepower: HP = (CFM * 1.44) HP = (500 * 1.44) HP = 720 horsepower., More information from the unit converter How many cfm in 1 l/s? The answer is 2.1188799727597. We assume you are converting between cubic foot/minute and litre/second.You can view more details on each measurement unit: cfm or l/s The SI derived unit for volume flow rate is the cubic meter/second. 1 cubic meter/second is equal to …, Grille Area (sq.in) = Airflow (cfm) ÷ [ Face Velocity (fpm) x Grille Free Area (%) ] x 144. Say we have an HVAC unit with 1050 CFM. Using an optimal face velocity of 500 fpm and assuming the grille has a free area of 70%, the required grille size is: Grille Area = 1050 ÷ (500 x 0.7) x 144. Grille Area = 432 sq.in., 686. FPM. 0.078. inWg/100ft. Free online ductulator for sizing of HVAC ducts., Use this calculator to calculate your startup costs so you know how much money you need to start a small business. Includes examples of start up expenses. Business startup costs ar..., Formula of CFM PSI Calculator. The formula used by the CFM PSI Calculator is as follows: CFM = (RPM * displacement) / (2.036 * PSI) Where: CFM is the Cubic Feet per Minute, representing the volume of air flow. RPM is the Rotations Per Minute of the compressor, indicating the speed at which the compressor operates., Formula: Diameter = √ ( (576 × A) / (3.14 × V)) Where, A = Air Flow. V = Air Flow Velocity. Online duct size cfm calculation. Use this simple science duct size cfm calculator to calculate diameter., Apr 15, 2024 · Welcome to the fan calculator — or CFM calculator. Here, we will help you calculate the mass flow rate and CFM of a given fan. We will introduce you to the mass flow rate equation and explain what CFM is and what the abbreviation CFM stands for (hint: Cubit Feet per Minute). We made sure that no fan feels excluded, whether it's the humble ... , Aug 21, 2017 ... In this series of Tech Tips videos, we will show you how to use airflow measurements to calculate the CFM. Learn more about Carrier at ..., Every time you invest or save your money, you're buying back some of your time and freedom. Figure out how many days of freedom that next purchase will cost you! Every time you inv..., Think of it as the balance in a complex recipe—just the right mix ensures perfection. Here’s the formula to break it down: airflow (CFM)= room’s floor area (sq.ft.) × ceiling height (ft.)× ACH÷60. airflow (CFM): The air volume flow rate you need in the room. room’s floor area (sq.ft.):, Area of Ventilation Duct: 50 square feet FPM Measured: 250 feet per minute. Using the formula: CFM = (50 square feet) × (250 FPM) = 12,500 CFM. In this example, the CFM …, To calculate the air change in a room, the airflow is measured (CFM) and multiplied by 60 minutes per hour. It is then divided by the volume of the room you wish to measure (in cubic feet): Air Changes / hr = (CFM x 60 minutes) / Volume of the room (cubic feet) In simpler words, we change the CFM or Cubic Feet per Minute into CFH or Cubic Feet ..., Jan 18, 2024 · The Compressor CFM (Cubic Feet per Minute) Calculator is a powerful tool designed to provide users with accurate airflow measurements for their compressors. By inputting the volume of the air tank (in cubic inches) and the number of revolutions per minute (RPM) of the compressor's pump, users can quickly determine the CFM, essential information for optimizing compressor performance. , Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM × (14.7 psi ÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60°F temperature and 16 psi pressure is equal to 452.41 CFM. You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM ..., cfm. L/min. 0.035. 1.00. 0.070. 2.00. 0.100. 2.83. 0.105. 3.00. 0.177. 5.00. 0.250. 7.08. 0.353. 10.0. 0.500. 14.2. 0.530. 15.0. 0.708. 20.0. 0.750. 21.2. 0.883., The equation would be: 2,400 / 12 = 200 CFM. All the calculators you find online, including ours, “do the math” for you by converting how many ACH you desire into how many minutes per change. 15 ACH = 4 minutes each. 10 ACH = 6 minutes each. 8 ACH = 7.5 minutes each, etc., The desired size of each louver blade (in inches). The total area of all louvers combined (in square inches). To calculate the Total Louver Area, you can use the formula: Total Louver Area = (Required CFM * 144) / Face Velocity (FPM) Here, 144 is a conversion factor to convert CFM to cubic inches per minute (1 cubic foot = 144 cubic inches).