Mass flow rate of hot fluid Calculator

✖The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer.ⓘ Effectiveness of Heat Exchanger [ϵ]			+10% -10%
✖Smaller value of mass flowrate of hot fluid * specific heat of hot fluid and mass flowrate of cold fluid * specific heat of cold fluid.ⓘ Smaller Value [C_min]			+10% -10%
✖Specific heat of hot fluid is the amount of heat required to change the temperature of a mass unit of a hot fluid by one degree.ⓘ Specific heat of hot fluid [ch]			+10% -10%
✖Entry temperature of hot fluid is the temperature of the hot fluid at entry.ⓘ Entry Temperature of Hot Fluid [T1]			+10% -10%
✖Exit temperature of cold fluid is the temperature of the cold fluid at exit.ⓘ Exit Temperature of Cold Fluid [t2]			+10% -10%
✖Entry temperature of cold fluid is the temperature of the cold fluid at entry.ⓘ Entry Temperature of Cold Fluid [t1]			+10% -10%

✖Mass Flow Rate of Hot Fluid is the mass of the hot fluid which passes per unit of time.ⓘ Mass flow rate of hot fluid [mh]

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Formula

✖

Mass flow rate of hot fluid

Formula

mh = (ϵ \cdot \frac{C min}{ch}) \cdot (\frac{1}{\frac{T1 - t2}{T1 - t1}})

Example

228.5714 kg/s = (8 \cdot \frac{30}{1.5 J/(kg*K)}) \cdot (\frac{1}{\frac{60 K - 25 K}{60 K - 10 K}})

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Mass flow rate of hot fluid Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mass Flow Rate of Hot Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of hot fluid)*(1/((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)))
mh = (ϵ*C_min/ch)*(1/((T1-t2)/(T1-t1)))
This formula uses 7 Variables

Variables Used

Mass Flow Rate of Hot Fluid - (Measured in Kilogram per Second) - Mass Flow Rate of Hot Fluid is the mass of the hot fluid which passes per unit of time.
Effectiveness of Heat Exchanger - The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer.
Smaller Value - Smaller value of mass flowrate of hot fluid * specific heat of hot fluid and mass flowrate of cold fluid * specific heat of cold fluid.
Specific heat of hot fluid - (Measured in Joule per Kilogram per K) - Specific heat of hot fluid is the amount of heat required to change the temperature of a mass unit of a hot fluid by one degree.
Entry Temperature of Hot Fluid - (Measured in Kelvin) - Entry temperature of hot fluid is the temperature of the hot fluid at entry.
Exit Temperature of Cold Fluid - (Measured in Kelvin) - Exit temperature of cold fluid is the temperature of the cold fluid at exit.
Entry Temperature of Cold Fluid - (Measured in Kelvin) - Entry temperature of cold fluid is the temperature of the cold fluid at entry.

STEP 1: Convert Input(s) to Base Unit

Effectiveness of Heat Exchanger: 8 --> No Conversion Required
Smaller Value: 30 --> No Conversion Required
Specific heat of hot fluid: 1.5 Joule per Kilogram per K --> 1.5 Joule per Kilogram per K No Conversion Required
Entry Temperature of Hot Fluid: 60 Kelvin --> 60 Kelvin No Conversion Required
Exit Temperature of Cold Fluid: 25 Kelvin --> 25 Kelvin No Conversion Required
Entry Temperature of Cold Fluid: 10 Kelvin --> 10 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

mh = (ϵ*C_min/ch)*(1/((T1-t2)/(T1-t1))) --> (8*30/1.5)*(1/((60-25)/(60-10)))

Evaluating ... ...

mh = 228.571428571429

STEP 3: Convert Result to Output's Unit

228.571428571429 Kilogram per Second --> No Conversion Required

FINAL ANSWER

228.571428571429 ≈ 228.5714 Kilogram per Second <-- Mass Flow Rate of Hot Fluid

(Calculation completed in 00.004 seconds)

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Home » Physics » Heat and Mass Transfer » Heat Exchanger » Mechanical » Physical Parameters of Heat Exchanger » Mass flow rate of hot fluid

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Created by Nishan Poojary

Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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< Physical Parameters of Heat Exchanger Calculators

Mass flow rate of cold fluid

Go Mass Flow Rate of Cold Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of cold fluid)*(1/((Exit Temperature of Cold Fluid-Entry Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)))

Mass flow rate of hot fluid

Go Mass Flow Rate of Hot Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of hot fluid)*(1/((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)))

Correction factor in heat exchanger

Go Correction Factor = Heat exchanged/(Overall Heat Transfer Coefficient*Area*Logarithmic Mean Temperature Difference)

Area of heat exchanger

Go Area = Heat exchanged/(Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference*Correction Factor)

Mass flow rate of hot fluid Formula

What is Heat exchanger?

A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

How to Calculate Mass flow rate of hot fluid?

Mass flow rate of hot fluid calculator uses Mass Flow Rate of Hot Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of hot fluid)*(1/((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid))) to calculate the Mass Flow Rate of Hot Fluid, The Mass flow rate of hot fluid formula is defined as the amount of hot fluid flowing per unit time in the heat exchanger. Mass Flow Rate of Hot Fluid is denoted by mh symbol.

How to calculate Mass flow rate of hot fluid using this online calculator? To use this online calculator for Mass flow rate of hot fluid, enter Effectiveness of Heat Exchanger (ϵ), Smaller Value (C_min), Specific heat of hot fluid (ch), Entry Temperature of Hot Fluid (T1), Exit Temperature of Cold Fluid (t2) & Entry Temperature of Cold Fluid (t1) and hit the calculate button. Here is how the Mass flow rate of hot fluid calculation can be explained with given input values -> 228.5714 = (8*30/1.5)*(1/((60-25)/(60-10))).

FAQ

What is Mass flow rate of hot fluid?

The Mass flow rate of hot fluid formula is defined as the amount of hot fluid flowing per unit time in the heat exchanger and is represented as mh = (ϵ*C_min/ch)*(1/((T1-t2)/(T1-t1))) or Mass Flow Rate of Hot Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of hot fluid)*(1/((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid))). The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer, Smaller value of mass flowrate of hot fluid * specific heat of hot fluid and mass flowrate of cold fluid * specific heat of cold fluid, Specific heat of hot fluid is the amount of heat required to change the temperature of a mass unit of a hot fluid by one degree, Entry temperature of hot fluid is the temperature of the hot fluid at entry, Exit temperature of cold fluid is the temperature of the cold fluid at exit & Entry temperature of cold fluid is the temperature of the cold fluid at entry.

How to calculate Mass flow rate of hot fluid?

The Mass flow rate of hot fluid formula is defined as the amount of hot fluid flowing per unit time in the heat exchanger is calculated using Mass Flow Rate of Hot Fluid = (Effectiveness of Heat Exchanger*Smaller Value/Specific heat of hot fluid)*(1/((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid))). To calculate Mass flow rate of hot fluid, you need Effectiveness of Heat Exchanger (ϵ), Smaller Value (C_min), Specific heat of hot fluid (ch), Entry Temperature of Hot Fluid (T1), Exit Temperature of Cold Fluid (t2) & Entry Temperature of Cold Fluid (t1). With our tool, you need to enter the respective value for Effectiveness of Heat Exchanger, Smaller Value, Specific heat of hot fluid, Entry Temperature of Hot Fluid, Exit Temperature of Cold Fluid & Entry Temperature of Cold Fluid and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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