Litres per minute (l/min) to Cubic feet per minute (ft3/min) conversion

Litres per minute to Cubic feet per minute conversion table

Litres per minute (l/min)Cubic feet per minute (ft3/min)
00
10.03531468492103
20.07062936984207
30.1059440547631
40.1412587396841
50.1765734246052
60.2118881095262
70.2472027944472
80.2825174793683
90.3178321642893
100.3531468492103
200.7062936984207
301.059440547631
401.4125873968414
501.7657342460517
602.1188810952621
702.4720279444724
802.8251747936828
903.1783216428931
1003.5314684921034
100035.314684921034

How to convert litres per minute to cubic feet per minute?

Converting between Litres per minute (LPM) and Cubic feet per minute (CFM) involves understanding the relationship between metric and imperial units of volume flow rate. Here's a breakdown of the conversion process.

Understanding the Conversion

The conversion between LPM and CFM is based on the relationship between litres and cubic feet, and minutes (time) stay the same. The critical conversion factor to remember is:

1 L0.0353147 ft31 \text{ L} \approx 0.0353147 \text{ ft}^3

Since we are converting "per minute," the time component remains consistent across both units.

Step-by-Step Conversion: LPM to CFM

To convert from Litres per minute to Cubic feet per minute, multiply the value in LPM by the conversion factor.

  1. Start with the value in Litres per minute: 1 LPM

  2. Multiply by the conversion factor:

    1 LPM×0.0353147ft3L=0.0353147 CFM1 \text{ LPM} \times 0.0353147 \frac{\text{ft}^3}{\text{L}} = 0.0353147 \text{ CFM}

Therefore, 1 Litre per minute is approximately equal to 0.0353147 Cubic feet per minute.

Step-by-Step Conversion: CFM to LPM

To convert from Cubic feet per minute to Litres per minute, divide the value in CFM by the conversion factor (or multiply by the inverse).

  1. Start with the value in Cubic feet per minute: 1 CFM

  2. Divide by the conversion factor (0.0353147) or multiply by its inverse (approximately 28.3168):

    1 CFM÷0.0353147ft3L=28.3168 LPM1 \text{ CFM} \div 0.0353147 \frac{\text{ft}^3}{\text{L}} = 28.3168 \text{ LPM}

    1 CFM×28.3168Lft3=28.3168 LPM1 \text{ CFM} \times 28.3168 \frac{\text{L}}{\text{ft}^3} = 28.3168 \text{ LPM}

Therefore, 1 Cubic foot per minute is approximately equal to 28.3168 Litres per minute.

Real-World Examples

LPM and CFM are commonly used in various applications to measure fluid flow:

  1. HVAC Systems: Air conditioning and heating systems often measure airflow in CFM to ensure efficient heating or cooling of a space. For example, specifying the airflow requirement for a HVAC system for home or business requires airflow. GlobalSpec - Duct sizing calculation
  2. Automotive: Engine performance and efficiency are sometimes quantified using airflow rates, with conversions between LPM and CFM used to compare different systems.
  3. Pneumatics: Pneumatic systems and tools, such as air compressors, use CFM to specify the amount of air delivered.

Historical Note

While there's no specific law or person directly associated with the LPM to CFM conversion, the broader context involves the development and standardization of units of measurement. The metric system, including liters, was developed in France in the late 18th century. The imperial system, including cubic feet, has historical roots in England. Understanding fluid dynamics in general can be attributed to number of scientists:

  1. Evangelista Torricelli - He was the first to explain and provide experimental evidence for atmospheric pressure.
  2. Daniel Bernoulli - He published Hydrodynamica in 1738, which laid the foundation for the kinetic theory of gases and provided a theoretical basis for fluid flow. Britannica

See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Cubic feet per minute to other unit conversions.

What is Litres per minute?

Litres per minute (LPM) is a unit of volumetric flow rate, measuring the volume of liquid or gas that passes through a specific point in one minute. It is commonly used in various fields to quantify the rate of fluid transfer.

Understanding Litres per Minute (LPM)

LPM expresses how many litres of a substance flow through a given area in one minute. A litre is a unit of volume defined as 0.001 cubic meters, or 1000 cubic centimetres. Therefore, 1 LPM is equivalent to 1/1000 of a cubic meter per minute.

How is Litres per Minute Formed?

LPM is derived from the base units of volume (litres) and time (minutes). The formula to calculate flow rate in litres per minute is:

Flow Rate (LPM)=Volume (Litres)Time (Minutes)\text{Flow Rate (LPM)} = \frac{\text{Volume (Litres)}}{\text{Time (Minutes)}}

For example, if 50 litres of water flow out of a tap in one minute, the flow rate is 50 LPM.

Common Conversions

Here's a table of conversions between LPM and other common flow rate units:

Unit Conversion to LPM
1 Cubic Meter/Hour ≈ 16.67 LPM
1 Gallon/Minute (GPM) ≈ 3.785 LPM
1 Millilitre/Minute (mL/min) = 0.001 LPM

Real-World Applications and Examples

  • Medical Oxygen Delivery: Oxygen concentrators and ventilators often specify flow rates in LPM. A typical oxygen concentrator might deliver oxygen at a rate of 2-5 LPM.

  • Water Flow in a Household: The flow rate of water from a tap or showerhead is often measured in LPM. For instance, a water-saving showerhead might have a flow rate of 7-10 LPM.

  • Aquarium Filters: The performance of aquarium filters is often rated in LPM, indicating how quickly the filter can process the aquarium water. An aquarium filter might have a flow rate of 500 LPM.

  • HVAC Systems: Airflow in HVAC (Heating, Ventilation, and Air Conditioning) systems is sometimes specified in LPM, especially in smaller systems or components.

  • Industrial Processes: Many industrial processes involving fluids, such as chemical mixing or cooling, use LPM to measure and control flow rates.

Interesting Facts

While there isn't a specific "law" named after LPM, the principles of fluid dynamics and flow rate are governed by laws such as the Hagen-Poiseuille equation, which relates flow rate to pressure, viscosity, and dimensions of the pipe.

The measurement of flow rate has been crucial in the development of various technologies and industries, from water management to chemical engineering. The accurate measurement of flow is essential for efficiency, safety, and control in many processes. For more information on this, read the Fluid dynamics article from sciencelearn.org.nz.

What is cubic feet per minute?

What is Cubic feet per minute?

Cubic feet per minute (CFM) is a unit of measurement that expresses the volume of a substance (usually air or gas) flowing per minute. It's commonly used to measure airflow in ventilation, HVAC systems, and other industrial processes. Understanding CFM helps in selecting appropriate equipment and ensuring efficient system performance.

Understanding Cubic Feet per Minute (CFM)

Definition

CFM defines the amount of cubic feet that passes through a specific area in one minute. It is a standard unit for measuring volume flow rate in the United States.

How it is formed?

CFM is derived from the units of volume (cubic feet, ft3ft^3) and time (minutes, min). Therefore, 1 CFM means one cubic foot of a substance passes a specific point every minute.

Formula

The relationship between volume, time, and CFM can be expressed as:

CFM=Volume(ft3)Time(minutes)CFM = \frac{Volume (ft^3)}{Time (minutes)}

Real-World Applications and Examples

HVAC Systems

  • Home Ventilation: A typical bathroom exhaust fan might have a CFM rating of 50-100, depending on the bathroom's size. This ensures adequate removal of moisture and odors.
  • Air Conditioners: The CFM rating of a central air conditioning system is crucial for proper cooling. For instance, a 2.5-ton AC unit might require around 1000 CFM to effectively cool a space.
  • Furnaces: Furnaces use CFM to ensure proper airflow across the heat exchanger, maintaining efficiency and preventing overheating.

Industrial Applications

  • Pneumatic Tools: Air compressors powering pneumatic tools (like nail guns or impact wrenches) are often rated by CFM delivered at a certain pressure (PSI). For example, a heavy-duty impact wrench might require 5 CFM at 90 PSI.
  • Spray Painting: Air compressors used for spray painting need a specific CFM to atomize the paint properly. An automotive paint job may require a compressor delivering 10-15 CFM at 40 PSI.
  • Dust Collection: Dust collection systems in woodworking shops use CFM to extract sawdust and debris from the air, maintaining a clean and safe working environment. A small shop might use a system with 600-800 CFM.

Other Examples

  • Computer Cooling: Fans used to cool computer components (CPUs, GPUs) are rated in CFM to indicate how much air they can move across the heat sink.
  • Leaf Blowers: Leaf blowers are often specified by CFM, indicating their ability to move leaves and debris.

Interesting Facts

Standard Conditions

When comparing CFM values, it's important to note the conditions under which they were measured. Standard conditions for airflow are typically at a specific temperature and pressure (e.g., Standard Temperature and Pressure, or STP).

Conversion to Other Units

CFM can be converted to other volume flow rate units, such as cubic meters per hour (m3/hm^3/h) or liters per second (L/s), using appropriate conversion factors.

  • 1 CFM ≈ 1.699 m3/hm^3/h
  • 1 CFM ≈ 0.472 L/s

Relationship to Velocity

CFM is related to air velocity and the cross-sectional area of the flow. The formula linking these is:

CFM=Area(ft2)×Velocity(ft/min)CFM = Area (ft^2) \times Velocity (ft/min)

This relationship is crucial in designing ductwork and ventilation systems to ensure proper airflow. You can find more about this relationship on engineering websites such as How to measure air volume flow or air velocity?

Complete Litres per minute conversion table

Enter # of Litres per minute
Convert 1 l/min to other unitsResult
Litres per minute to Cubic Millimeters per second (l/min to mm3/s)16666.666666667
Litres per minute to Cubic Centimeters per second (l/min to cm3/s)16.666666666667
Litres per minute to Cubic Decimeters per second (l/min to dm3/s)0.01666666666667
Litres per minute to Cubic Decimeters per minute (l/min to dm3/min)1
Litres per minute to Cubic Decimeters per hour (l/min to dm3/h)60
Litres per minute to Cubic Decimeters per day (l/min to dm3/d)1440
Litres per minute to Cubic Decimeters per year (l/min to dm3/a)525960
Litres per minute to Millilitres per second (l/min to ml/s)16.666666666667
Litres per minute to Centilitres per second (l/min to cl/s)1.6666666666667
Litres per minute to Decilitres per second (l/min to dl/s)0.1666666666667
Litres per minute to Litres per second (l/min to l/s)0.01666666666667
Litres per minute to Litres per hour (l/min to l/h)60
Litres per minute to Litres per day (l/min to l/d)1440
Litres per minute to Litres per year (l/min to l/a)525960
Litres per minute to Kilolitres per second (l/min to kl/s)0.00001666666666667
Litres per minute to Kilolitres per minute (l/min to kl/min)0.001
Litres per minute to Kilolitres per hour (l/min to kl/h)0.06
Litres per minute to Cubic meters per second (l/min to m3/s)0.00001666666666667
Litres per minute to Cubic meters per minute (l/min to m3/min)0.001
Litres per minute to Cubic meters per hour (l/min to m3/h)0.06
Litres per minute to Cubic meters per day (l/min to m3/d)1.44
Litres per minute to Cubic meters per year (l/min to m3/a)525.96
Litres per minute to Cubic kilometers per second (l/min to km3/s)1.6666666666667e-14
Litres per minute to Teaspoons per second (l/min to tsp/s)3.38140227
Litres per minute to Tablespoons per second (l/min to Tbs/s)1.12713409
Litres per minute to Cubic inches per second (l/min to in3/s)1.0170670895671
Litres per minute to Cubic inches per minute (l/min to in3/min)61.024025374023
Litres per minute to Cubic inches per hour (l/min to in3/h)3661.4415224414
Litres per minute to Fluid Ounces per second (l/min to fl-oz/s)0.563567045
Litres per minute to Fluid Ounces per minute (l/min to fl-oz/min)33.8140227
Litres per minute to Fluid Ounces per hour (l/min to fl-oz/h)2028.841362
Litres per minute to Cups per second (l/min to cup/s)0.070445880625
Litres per minute to Pints per second (l/min to pnt/s)0.0352229403125
Litres per minute to Pints per minute (l/min to pnt/min)2.11337641875
Litres per minute to Pints per hour (l/min to pnt/h)126.802585125
Litres per minute to Quarts per second (l/min to qt/s)0.01761147015625
Litres per minute to Gallons per second (l/min to gal/s)0.004402867539062
Litres per minute to Gallons per minute (l/min to gal/min)0.2641720523438
Litres per minute to Gallons per hour (l/min to gal/h)15.850323140625
Litres per minute to Cubic feet per second (l/min to ft3/s)0.0005885780820172
Litres per minute to Cubic feet per minute (l/min to ft3/min)0.03531468492103
Litres per minute to Cubic feet per hour (l/min to ft3/h)2.1188810952621
Litres per minute to Cubic yards per second (l/min to yd3/s)0.00002179915618098
Litres per minute to Cubic yards per minute (l/min to yd3/min)0.001307949370859
Litres per minute to Cubic yards per hour (l/min to yd3/h)0.07847696225152

Volume flow rate conversions