**Volumetric** and **mass** **flow** **rate**. When we talk about **flow** **rate**, you most likely picture the concept of **volumetric** **flow** **rate** (also known as **rate** of liquid **flow**, volume **flow** **rate** or volume velocity). The **volumetric** **flow** **rate** can be defined as the volume of a given fluid that passes through a given cross-sectional area per unit of time If the volume flow rate of the fluid is known, it needs to be converted into a mass flow rate, which can be done with the formula: qm=qv×ρ. Density, Mass Flow, and Volumetric Flow. A description on the relationship between density, mass flow rate and volumetric flow rate. The following video provides a good explanation

those variables are related by a relation from the definition of density. which is [math]\rho = mass / volume.[/math] by multiplying equation above by [math]1/s / 1/s[/math] , we can change both mass and volume by their rate. so that, [math]\rho =.. Standard volumetric flow rates of a fluid are the equivalent of actual volumetric flow rates in the sense that they have an equal mass flow rate. This identity makes standard volumetric flow appropriate providing a common baseline for comparison of volumetric gas flow rate measurements at different conditions. This article outlines how to convert between standard and actual volumetric flow rates When a volume flow rate is calculated a chart will be generated showing related conversion values for mass versus volume flow for the specified substance density. Formula. The formula used by this calculator to calculate the volume flow is: Q = ṁ / ρ. Symbols. Q = Volumetric flow rate; ṁ = Mass flow rate; ρ = Density; Mass Flow Rate.

Mass Flow to Volumetric Flow measurement units converter. Convert lbm/h, kg/h, gpm, m3/h and more. mass flow,lbm/h, kg/h to volumitric flow, gpm/m3/h Flow Rate Calculator. Easily calculate the volumetric flow rate of a pipe (a.k.a. discharge rate) given its diameter (for a round pipe, height & width for a rectangular one) and the velocity of the liquid or gas flowing through it. The flow rate calculator can also calculate the mass flow rate of liquids given the liquid density is known. Input and output support metric and imperial. Mass flow rate can also be calculated by: ˙ = ⋅ ˙ = ⋅ ⋅ = ⋅ where: ˙ or Q = Volume flow rate, ρ = mass density of the fluid,; v = Flow velocity of the mass elements,; A = cross-sectional vector area/surface,; j m = mass flux.; The above equation is only true for a flat, plane area. In general, including cases where the area is curved, the equation becomes a surface integral The volumetric flow rate in a heating system can be expressed as. q = h / (c p ρ dt) (1). where. q = volumetric flow rate (m 3 /s). h = heat flow rate (kJ/s, kW). c p = specific heat (kJ/kg o C). ρ = density (kg/m 3). dt = temperature difference (o C). This generic equation can be modified for the actual units - SI or imperial - and the liquids in use Volumetric flow rate should not be confused with volumetric flux, as defined by Darcy's law and represented by the symbol q, with units of m 3 /(m 2 ·s), that is, m·s −1. The integration of a flux over an area gives the volumetric flow rate

- Mass Flow versus Volumetric Flow Rate. This post compares the mass flow rate to volumetric flow rate, revealing some distinct advantages for using thermal flowmeters, which measure mass flow rather than volumetric flow.. What is volumetric flow rate? Volume is a three-dimensional measure of the area a substance occupies
- This physics video tutorial provides a basic introduction into mass flow rate and volume flow rate. The mass flow rate is the change in mass per unit time. It..
- (200 sccm) at standard.
- e volumetric flow is: Q = vA. Where, Q is volumetric flow in m 3 /s; v is the flow velocity in m/s; A is area in m 2; A simple example might be water flowing through a rectangular channel that has a 10cm by 5cm cross-section at a velocity of 5 m/s
- R = Universal Gas Flow Constant (1545 ft lbf/(lb mol)(°R)) divided by M.W. T = Gas Temperature in °R (°F + 460) Z = Compressibility Factor assumed at 1.0 for pressures below 50 psig P = Gas Pressure in psia Q = Volumetric Flow in CFM (Cubic Feet per Minute
- Why they're useful []. Volumetric flow rates can be measured directly using flow meters.They are especially useful for gases since the volume of a gas is one of the four properties that are needed in order to use an equation of state (discussed later in the book) to calculate the molar flow rate. Of the other three, two (pressure, and temperature) can be specified by the reactor design and.

Overview: This video explains the concepts of molar, mass and volumetric flow rate. It also gives two examples of how conversion from one to another is accom.. Dividing the volumetric flow by the time, in hours, gives the volumetric flow rate in cubic feet per hour. Be consistent with your use of measurement units in flow calculations. If you use a mass expressed in pounds, a density expressed in pounds per cubic foot and a time expressed in hours to calculate a volumetric flow rate, for example, then the result must be expressed as cubic feet per hour

Volume flow rate is a term in physics that describes how much matter - in terms of physical dimensions, not mass - moves through space per unit time. For example, when you run a kitchen faucet, a given amount of water (which you might measure in fluid ounces, liters or something else) passes out of the opening of the faucet in a given amount of time (usually seconds or minutes) Volumetric flow rate is a measure of the 3-dimensional space that the gas occupies as it flows through the instrument under the measured pressure and temperature conditions. Volumetric flow rate can also be called actual flow rate. Mass flow rate is a measure of the number o

Volumetric flow vs. mass flow. When comparing volumetric flow rate or mass flow rate, you need to know how accurate the measurement needs to be. The mass flow is best when accuracy is needed with a high-pressure rating. Volumetric flow is best when measuring the volumetric flow of the gas and high accuracy isn't necessary he relationship between mass flow and nonstandard volumetric flow. An AWM3100V with a mass flow rate of 0.2498 g/min (200 SCCM) at the same pressure of 1.0 atm but at a different temperature, 25 °C, has a 5 Vdc output voltage, indicating a standard flow rate(Qs) of 200 SCCM. The rotometer, however, would indicate a nonstandard volumetric.

- The mass flow rate of a system is a measure of the mass of fluid passing a point in the ( ˙ m) system per unit time.The mass flow rate is related to the volumetric flow rate as shown in Equation 3-2 where r is the density of the fluid.. If the volumetric flow rate is in cubic feet per second and the density is in pounds-mass per cubic foot, Equation 3-2 results in mass flow rate measured in.
- g you have an area of $1$ m^2 with a velocity of $1$ m/s, air with a density of $1.225$ kg/m^3 will equate to a mass flow of $1.225$ kg/s. For incompressible flows, the mass flow rate is constant
- e several properties of the reservoir [5].A common test is the pressure buildup test.The procedure is to conduct a steady flow test at a certain volumetric flow rate V ˙ 1 for a period of time, t 1, during which the downhole pressure opposite the feed zone is monitored
- Share Volumetric flow rate. In fluid dynamics, the volumetric flow rate, also volume flow rate and rate of fluid flow, is the volume of fluid which passes through a given volume per unit time (for example cubic meters per second [m 3 /s] in basic SI units or ft 3 /s). It is usually represented by the symbol Q. Volumetric flow rate should not be confused with volumetric flux, represented by the.

where V is the volume and t is the elapsed time. The SI unit for flow rate is m 3 /s, but a number of other units for Q are in common use. For example, the heart of a resting adult pumps blood at a rate of 5.00 liters per minute (L/min). Note that a liter (L) is 1/1000 of a cubic meter or 1000 cubic centimeters (10-3 m 3 or 10 3 cm 3).In this text we shall use whatever metric units are most. Im Besonderen der Gewinner sticht von den bewerteten Convert volumetric flow rate to mass flow rate massiv heraus und sollte so gut wie ohne weiteres abräumen. Hama Überspannungsschutz Adapter für z.B. Telefonanlage, Computer, Hifi und TV-Geräte, bis 3500 W, 230 V, doppelte LED-Statusanzeige, wei The mass flow rate in lb m /min. Assume the density of water is 1000 kg/m 3 b.) The average velocity of the water in the pipe in ft/s. Read : This is a straightforward application of the relationships between mass and volumetric flow rates, density or specific volume, velocity and cross-sectional area for flow. Diagram ** Ch 5, Lesson A, Page 5 - Equations for Determing the Mass Flow Rate**. Let's begin with the concept of density. Density is just the ratio of the mass of a chunk of fluid to its volume. The cool part is that the density is also the ratio of the mass flow rate to the volumetric flow rate. Volumetric flow rate is a new idea, but not a scary one Flow is measured as a volume or mass per unit time. This calculator let you calculate the flow rate of any liquid or gas fluid starting from different linear, volumetric flow rate, mass flow rate or normal flow rate

The below online Volumetric Flow Rate Units Converter helps to convert the rate of fluid flow in a pipe to other different volume flow rate unit measurement. The volumetric flow rate is also known as volume flow rate, a rate of fluid flow or volume velocity which is the volume of fluid passes per unit time Continuity Equation (Mass flow rate and volumetric flow rate) The Continuity Equation deals with the flow of a fluid through a pipe as the pipe changes size. As the fluid flows from one section of pipe to another section that has a different diameter, the fluid's velocity will change. Technically, it doesn't have to be a pipe

The mass flow rate is the mass of a liquid substance passing per unit time. In other words, the mass flow rate is defined as the rate of movement of liquid pass through a unit area. The mass flow is directly dependent on the density, velocity of the liquid, and area of cross-section. It is the movement of mass per unit time Molar flow rate (n) is the number of moles of a solution/mixture that passes point of measurement per second Volumetric flow (V) rate is the volume of gas/liquid passing through a point of measurement per second Both these are connected by a equat.. Flow rate conversion tool for volumetric flow units. Online converter for flow rate by volume and mass, conversion charts with flow metrics conversion factors. Automatic tool to precisely calculate velocity from one flow unit into other equivalent flow rate US, UK, Metric units. Flow passing through a controlled space gets measured with air and gas flow meters, water or other fluids.

- Volume flow rate is often listed as Vdot or a V with a dot above it e.g. Other common flow rate measurements include. Velocity flow rate (m/s) Mass flow rate (kg/s) In this article we will focus only on volume flow rate, to learn about the others simply follow the links above
- Volumetric flow metering is proportional to mass flow rate only if the density of the fluids is constant. If the fluid contains bubbles, the volume flow rate is not an accurate measure. In fluid dynamics, the volumetric flow rate is the volume of fluid passing through a given volume in a given time frame
- Volumetric Flow Rate Conversion. Mass Conversion. Force Conversion. Pressure Conversion. Power Conversion. Energy Conversion. Velocity Conversion. Acceleration Conversion. Temperature Conversion. Angle Conversion. Time Conversion. Density Conversion. Fuel Consumption Conversion. Ratio Conversion. Metric prefix Conversion. Data Transfer Rate.
- ute, gram/second, hectogram/second, kilogram/day, kilogram/hour, kilogram/

From the volumetric air flowrate given in conditions 1 (often the normal conditions, 101325 Pa and 20°c), the volumetric flow can be calculated in conditions 2. Conditions 2 should be either the beginning of the line or the end of the line What is volumetric flow rate? Volumetric flow rate is the rate at which a given volume of fluid flows through the opening of an area. In other words, how much volume is passing through a point per time or second ** Convert between different flow rates, mass basis**. Information: The SI Derived Unit for mass based flow rate is kilogram/second

Flow coming out from well have several components.how to convert their mass flow or molar to volumetric flow. it contains the mixture of gas,aqueous and liquid phase. Mass Flow Rate Flow ** Converting From Linear Fow (cm/hour) to Volumetric Flow Rates (ml/min) and Vice Versa Appendix 4 extracted from Affinity Chromatography Principles and Methods **, GE Healthcare, 2007 It is convenient when comparing results for columns of different sizes to express ﬂow as linear ﬂow (cm/hour) Convert volume basis flow rate between several different units Mass flow rate is simply a measurement of the amount of mass (weight) passing by a single point over a length of time. ( Click here to see the difference between weight and mass). We (pretty much the entire world) measure mass flow rate in the SI units of kilograms per second (kg/s) except in America where they still use British Imperial units of pounds mass per second (Ibm/s) In volumetric flow meters, the flow rate is calculated by measuring the volume of a substance through a device over a given period. It is also important to keep in mind that there are various types of substances that can pass through a flow meter such as liquids and gases

**Volumetric** **Flow** Calculations uses differential pressure produced by any **flow** element tube with any particular fluid density at a specified **flow** **rate**. Measurement Measurements of **mass** **flow** are preferred over measurements of **volumetric** **flow** in process applications where **mass** balance (monitoring the **rates** of **mass**. Share Mass flow rate. Mass flow rate is the mass of substance which passes through a given surface per unit time. Its unit is mass divided by time, so kilogram per second in SI units, and slug per second or pound per second in US customary units Considering the mass flow rate equation, it would appear that for a given area, we could make the mass flow rate as large as we want by setting the velocity very high. However, in real fluids, compressibility effects limit the speed at which a flow can be forced through a given area

- I think there is misunderstanding here. The main parameter that i want to calculate is volumetric flow rate at STP. I dont know why the author place volumetric flow rate at the input column, maybe as data input to the pipeline. Anyway i have done the calculation For mass flow rate A = π r 2 ρ at T&P = 39.67 kg/m 3 ṁ = ρ A
- ute (SCCM)
- g the Volumetric Flow rate is in m³/hr. If you know or can find the 'Specific Gravity' of the Fluid, multiply, Volume flow rate m³/hr by 1,000kg/m³, then by the S.G. to obtain mass flow rate
- Examples of how to use volumetric flow rate in a sentence from the Cambridge Dictionary Lab
- Online converter for units of flow rate by volume. Litres per year, gallons per hour, cubic inches per second? Instantly convert any unit to all others

Description. The Volumetric Flow Rate Source (TL) block represents an ideal mechanical energy source in a thermal liquid network. The source can maintain a constant volumetric flow rate regardless of the pressure differential. There is no flow resistance and no heat exchange with the environment Electronic mass flow meter 2020/04/08 Electronic mass flow meter is used todetermine the rate of flow of liquids and gasses. This is essential indifferent areas of plant production, efficiency and quality. For instance,since the law of co... view Natural Gas Mass Flow Meter 2020/01/03 The thermal mass flow meter is consideredas one of the new types of mass flow meters The volumetric flow rate in fluid dynamics and hydrometry, (also known as volume flow rate or rate of fluid flow) is the volume of fluid which passes through a given surface per unit time (for example cubic meters per second [m3/s] in SI units, or cubic feet per second [cu ft/s]) Volume flow rate unit conversion to convert cubic meters per second (m3/s), cubic feet per minute (ft3/m) and more To use a specific example, a mass flow rate in pounds (mass) per minute will be obtained by multiplying a mass density in pounds per cubic foot by a volumetric flow rate in cubic feet per minute: For example, a volumetric flow rate of 1000 cubic feet per minute of water is equivalent to 62400 pounds (mass) per minute, or 1040 lbm/s, with water having a density of 62.4 lbm/ft 3

- e how this capacity compares for another fluid under different pressure and temperature conditions a conversion must be made on the basis of equivalent pressure loss. This article describes the method for calculating the volumetric flow rate of a gas which will give.
- The end result is our mass flow rate of 10.193 slm@70F converted to a DUT volumetric flow rate of 10.54821 lm at the measured pressure of 14.323 PSI and 74.543 F. In some testing it might also be necessary to then convert the volumetric lm to a standardized pressure and temperature. Lets say are standardizing to 14.7 PSI and 70F
- A uniform plug flow is set by default. To set the profile according to the downstream cells: extrapolateProfile yes; To convert from a mass flow rate to a volumetric flow rate: rho rho; To convert from a mass flow rate to a volumetric flow rate for incompressible flows: rhoInlet 1.0; Further information. Source code
- Converting from Flow Velocity to Volumetric Flow Rates Appendix 7, Extracted from Affinity Chromatography Vol. 1: Antibodies , GE Healthcare, 2016 It is convenient when comparing results for columns of different sizes to express ﬂow as ﬂow velocity (cm/h)

STANDARD FLOW RATE VS. VOLUMETRIC FLOW RATE APPLICATION NOTE FLOW-004 December 2001 This application note applies to all TSI flowmeters. TSI flowmeters are considered mass flowmeters and indicate flow rate TSIs with reference to a set of standard conditions. For TSI instruments, standard conditions are defined as 21.1° C (70° F) and 101. * Then Mass flow rate of Air will be obtained by multiplying the arrived density with the Volumetric Flow rate i*.e Rho X V = 6.9X1000=6900Kgs/Hr.Normal Flow rate of Air = Mass Flow rate / (Mol.wt of. Mass Flow Rate (a time derivative of mass) is a scalar quantity as it is directly proportional to the mass of an object, which is a scalar quantity as well. Thus, as per Newton's notation, it can be stated that mass cannot be created or destroyed. The mass of any object is simply its volume that it occupies times the density of this object

- ), cubic meter per unit time (e.g. m3/
- flow rate[′flō ‚rāt] (fluid mechanics) Also known as rate of flow. Time required for a given quantity of flowable material to flow a measured distance. Weight or volume of flowable material flowing per unit time. Flow Rate in hydraulics, the volume of fluid flowing through a cross section of a stream per unit time. The flow rate Q of a fluid for a.
- Standard volumetric flow rates of a fluid are the equivalent of actual volumetric flow rates in the sense that they have an equal mass flow rate. This identity makes standard volumetric flow appropriate providing a common baseline for comparison of volumetric gas flow rate measurements at different conditions. This article outlines how to.
- Mass Flow Meters for Mass And Volumetric Flow Rates, Process Pressure and Temperature. Our range of mass flow meters from Alicat scientific are suitable for many types of gases and gas applications.Our mass flow meters compensate for pressure and temperature and can output both mass flow and volumetric flow rates.Many variants exist dependant on your requirements, our standard M series model.
- e tunnel, or flue using a tracer gas dilution technique. For editorial convenience all references in the text will be to a duct, but it should be understood that this could refer equally well to a stack, pipe,
- Hi Guys I am trying to put together a spreadsheet, whereby a volumetric flow rate can be input, along with the properties of the fluid (IE Molecular Weight, Compressibilty and Specific Heat Ratio) and the process conditions (IE Temperature and Pressure), then this can be converted into mass flow rate of the fluid
- Flow Rate Converter. Fill Flow velocity or Volumetric flow rate together with Column diameter and hit the Convert button to calculate the empty field. Hit reset button to clear the fields. The empty field is calculated from the formula: Volumetric flow rate (L/h) = (flow velocity (cm/h) * (column crossectional area (cm2) /1000)

What is Volumetric Flow Rate? The volumetric flow rate, which is also commonly referred to as the rate of liquid flow or volume flow rate, is the volume of a given fluid that flows within a unit of time.It is usually denoted by the Q symbol.. The rate at which a liquid flows will vary according to area of the pipe or channel through which it is passing and the velocity of the liquid The Flow Rate Sensor (IL) block represents an ideal sensor that measures mass flow rate and volumetric flow rate in an isothermal liquid network Convert from volumetric to mass flow rate. Calculate volumetric flow rate of ideal gas at different conditions of pressure and temperature. Calculator; Pipe diameter can be calculated when volumetric flow rate and velocity is known as: where is: D - internal pipe. Q. When I convert the standard flow rate of a gas to mass or volumetric, do I need to account for compressibility? A. Yes and no. Oftentimes the compressibility factor (Z) is neglected (or really assumed to be unity) when performing such conversions, but you must understand the assumption that warrants its omission.Converting standard flows to mass or volumetric flows is typically done using. The FMA-1600A Series mass and volumetric Omega's flow meters use the principle of differential pressure within a laminar flow field to determine the mass flow rate. A laminar flow element (LFD) insdie the meter forces the gas into laminar (streamlined) flow

Calculate the volumetric flow rate for the flow in the circular duct shown (Figure 2) when Umax 12 cm/s and R-4 cm. The velocity varies quadratically Learning Goal To calculate flow rates and average velocities for nonuniform velocity profiles using integration Express your answer in cms to three significant figures Consider a fluid flowing through a surface with some cross-sectional area A I would like to show mass and volumetric flow rate in surface plots on the inlet and outlet faces of an internal volume. When looking through the options I don't see either and in fact there are no options with flow units in the velocity and flow rate section of the customize parameter list volumetric flow rates and mass flow rates in the wide and narrow section were from MEEN 345 at Texas A&M Universit 3.2: Mass Flow Rates at Entrances and Exits Last updated; Save as PDF Page ID 18169; Chapter 3; Chapter 3; Chapter 3; There are many problems for which the control volume, V , contains only a single entrance and a single exit and the flux at the interfacial area is zero. This is the type of problem considered in Example 3.1 in terms of the word statement given by Eq. 3‐8, and we need to be. * Mass; Volume Flow rate*. It is the volume of any fluid passing through any section per unit time. It is denoted by Q. It is equal to the magnitude of the mean velocity multiplied by the flow area at right angles to the direction of mean velocity. Q=A.v

The mass flow meter does not measure the volume per unit time (e.g., cubic meters per second) passing through the device; it measures the mass per unit time (e.g., kilograms per second) flowing through the device. Volumetric flow rate is the mass flow rate divided by the fluid density. If the density is constant, then the relationship is simple Multiply the volume flow rate by its density to get mass flow rate and in case of a mixture flowing multiply volumetric flow rate by its average density. 0 0. bbullough. Lv 6. 1 decade ago. divide by the density; just make sure the mass unit is in kg Just like mass is found when multiplying density by volume, we can express mass flow rate as a product of volumetric flow rate and the density. When doing these calculations, we have to keep in mind that volume changes with changes in pressure or temperature. Applications. Mass flow rate estimations are useful in many industries The Flow Rate Source (IL) block represents an ideal mechanical energy source in an isothermal liquid network Measuring **flow** **rates** of gases can be quite a complex operation. Fine Controls has been supplying process controls and instrumentation equipment for over 20 years now so it's fair to say that we know a thing or two about the products in question however, we understand how complicated it can be for many people.. There are two main ways to measure **flow** **rate**; learn all you need to know on how to.

- 5. The flow rate 5.1. Volumetric flow rate [symbol: Q] It is the volume of fluid transferred per unit time. = Q u A. where A: is the cross sectional area of flow normal to the flow direction. The common units used for volumetric flow is (m. 3 /s), (cm. 3 /s), (ft. 3 /s). 5.2. Mass flow rate [symbol: m &] It is the mass of fluid transferred per.
- Conversion of volumetric flow rate units What do you want to convert? Just type in what you want to convert and press convert. Examples: Mass flow rate. Kilogramm per second, Metric tonne per hour, Long ton per hour, Pound per second, Short ton per hour, Mass/Weight.
- al conditions may be accurately calculated, the process conditions and fluid properties can vary sufficiently such that it is questionable if the measured volumetric flow rate (or derived using velocity) represents the required mass flow rates

* Volumetric Flow Rate Calculator*. This volume flow rate calculator helps you to calculate the volume flow rate of liquid or gas for the given values of change in volume (V) and change in time (t). Volumetric flow rate is the volume of fluid flowing per unit time and is represented as Q or V, measured in m 3 / s volumetric efficiency: CFM = engine air flow rate - cubic feet per minute: CID = engine displacement, size or volume - cubic inches: RPM = engine speed - revolutions per minute: NOC = number of cylinders: BORE = length: STROKE = length: HGV = head gasket volume: HGCT = head gasket compressed thickness: PDV = piston deck volume: DPD = deck to.

- Volume and Mass Flow Rate Measurement, Page 2 Orifice flowmeter • The obstruction in an orifice flowmeter is simply a blunt plate called an orifice plate with a hole of diameter d - an orifice - in the middle, as sketched to the right. V d D Orifice plate 1 2 • We define β as the ratio of orifice diameter d to the inner diameter of the pipe D, β=dD/
- ar flow. Then he uses the incompressibility of a liquid to show that the volume flow rate (flux) must remain constant. Sal then derives the equation of continuity in terms of the area and speed
- Owing to the way flow is measured in an Alicat, each mass flow device reports gas absolute pressure (gage pressure available if internal barometer is requested), temperature of the gas stream, mass flow rate, and volumetric flow rate. As both mass and volumetric flow readings are provided by Alicats, it gives you the freedom to choose the.
- Volumetric Flow Rate Converter. In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate, (also known as volume flow rate, rate of fluid flow, or volume velocity) is the volume of fluid which passes through a given surface per unit time. The SI unit is m³ · s-¹ (cubic meters per second)
- The maximum intake mass flow rate will be pretty easily estimated based on the displacement, RPM, and intake temperature and pressure. Obviously the exhaust mass flow rate will be the intake mass flow rate plus the fuel flow rate, which is small by comparison and for this purpose can be neglected
- Vortex volumetric flow and multivariable mass flow meters are the ideal technology for calculating steam flow. Our InnovaMass vortex flow meters measure five process variables with one process connection: mass flow rate, volumetric flow, density, pressure, and temperature

Q is the volumetric flow rate H is the pump head ṁ is the mass flow rate. In all pumps there are losses due to friction, internal leakage, flow separation, etc. Because of these losses, the external power supplied to the pump, called the input power (Pin) or brake horsepower, is always larger than the water horsepower A simple thermodynamic model with temperature and volumetric flow rate measurements was developed to determine the mass flow rate of anhydrous ammonia (NH 3) to a single knife on an applicator. Flow Rate of Fluids in Pipes. The quantity of fluid that will be discharged through a hose depends on the pressure applied at the feed end, the hose length and bore diameter. The surface character of the bore, the number, and shape of bends incorporated in the run of the hose also influence the flow rate Mass flow rate is a measure of the number of molecules that flow through the instrument, regardless of how much space those molecules occupy. Mass flow rate is often expressed as a standardised (or normalised) volumetric flow rate , which is the amount of space that those molecules would occupy if measured under standard temperature and pressure conditions (STP, or NTP) Flow Rate at 760 mmHg and 25 °C (mL/min) Correction (Standardised Flow Rate) (mL/min) % difference between volumetric and standardised volume flow rate Volumetric Flow Rate (mL/min) Calculated Standardised Flow Rate for 760 mmHg and 25 °C (mL/min) 603,2 522,0 512,7 -9,3 15,6 1 797 1 554 1 542 -12 15,6 2 998 2 592 2 581 -11 15,6 4 499 3 890 3. Measuring the Volumetric Flow Rate of a Gas. Both Bernoulli's equation and the continuity equation are derived based on the assumption that the fluid is incompressible. In general, gases are compressible and we cannot use the above method to measure the flow rate of a gas