Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference Calculator

✖Number of Transfer Units is a dimensionless parameter used to characterize the heat transfer performance of Heat Exchanger.ⓘ Number of Transfer Units [NTU]			+10% -10%
✖Log Mean Temperature Difference is the logarithmic temperature difference averaged between 2 fluid streams exchanging heat.ⓘ Log Mean Temperature Difference [ΔT_LMTD]			+10% -10%
✖Inlet Temperature is the temperature of fluid before entering into a heat exchanger.ⓘ Inlet Temperature [T_Inlet]			+10% -10%

✖Outlet Temperature of Fluid is temperature that it attained after passing through a heat exchanger.ⓘ Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference [T_Outlet]

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Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference

Formula

`"T"_{"Outlet"} = ("NTU"*"ΔT"_{"LMTD"})+"T"_{"Inlet"}`

Example

`"345K"=("1.2"*"39.1667K")+"298K"`

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Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference Solution

STEP 0: Pre-Calculation Summary

Formula Used

Outlet Temperature = (Number of Transfer Units*Log Mean Temperature Difference)+Inlet Temperature
T_Outlet = (NTU*ΔT_LMTD)+T_Inlet
This formula uses 4 Variables

Variables Used

Outlet Temperature - (Measured in Kelvin) - Outlet Temperature of Fluid is temperature that it attained after passing through a heat exchanger.
Number of Transfer Units - Number of Transfer Units is a dimensionless parameter used to characterize the heat transfer performance of Heat Exchanger.
Log Mean Temperature Difference - (Measured in Kelvin) - Log Mean Temperature Difference is the logarithmic temperature difference averaged between 2 fluid streams exchanging heat.
Inlet Temperature - (Measured in Kelvin) - Inlet Temperature is the temperature of fluid before entering into a heat exchanger.

STEP 1: Convert Input(s) to Base Unit

Number of Transfer Units: 1.2 --> No Conversion Required
Log Mean Temperature Difference: 39.1667 Kelvin --> 39.1667 Kelvin No Conversion Required
Inlet Temperature: 298 Kelvin --> 298 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T_Outlet = (NTU*ΔT_LMTD)+T_Inlet --> (1.2*39.1667)+298

Evaluating ... ...

T_Outlet = 345.00004

STEP 3: Convert Result to Output's Unit

345.00004 Kelvin --> No Conversion Required

FINAL ANSWER

345.00004 ≈ 345 Kelvin <-- Outlet Temperature

(Calculation completed in 00.004 seconds)

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Home » Engineering » Chemical Engineering » Process Equipment Design » Heat Exchangers » Basic Formulas Of Heat Exchanger Designs » Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference

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Malviya National Institute Of Technology (MNIT JAIPUR ), JAIPUR

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< 25 Basic Formulas Of Heat Exchanger Designs Calculators

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Go Shell Side Pressure Drop = (8*Friction Factor*(Length of Tube/Baffle Spacing)*(Shell Diameter/Equivalent Diameter))*(Fluid Density/2)*(Fluid Velocity^2)*((Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.14)

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Reynolds Number for Condensate Film Outside Vertical Tubes in Heat Exchanger

Go Reynold Number = 4*Mass Flowrate/(pi*Pipe Outer Diameter*Number of Tubes*Fluid Viscosity at Bulk Temperature)

Reynolds Number for Condensate Film Inside Vertical Tubes in Condenser

Go Reynold Number = 4*Mass Flowrate/(pi*Pipe Inner Diameter*Number of Tubes*Fluid Viscosity at Bulk Temperature)

Number of Tubes in Shell and Tube Heat Exchanger

Go Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2)

Shell Area for Heat Exchanger

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Number of Transfer Units for Plate Heat Exchanger

Go Number of Transfer Units = (Outlet Temperature-Inlet Temperature)/Log Mean Temperature Difference

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Go Equivalent Diameter = (1.10/Pipe Outer Diameter)*((Tube Pitch^2)-0.917*(Pipe Outer Diameter^2))

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Go Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2))

Viscosity Correction Factor for Shell and Tube Heat Exchanger

Go Viscosity Correction Factor = (Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^0.14

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Heat Exchanger Volume for Hydrocarbon Applications

Go Heat Exchanger Volume = (Heat Duty of Heat Exchanger/Log Mean Temperature Difference)/100000

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Go Heat Exchanger Volume = (Heat Duty of Heat Exchanger/Log Mean Temperature Difference)/50000

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Number of Tubes in Six Pass Triangular Pitch given Bundle Diameter

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Number of Tubes in Four Pass Triangular Pitch given Bundle Diameter

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Number of Tubes in One Pass Triangular Pitch given Bundle Diameter

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Number of Tubes in Two Pass Triangular Pitch given Bundle Diameter

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Shell Diameter of Heat Exchanger Given Clearance and Bundle Diameter

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Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference Formula

Outlet Temperature = (Number of Transfer Units*Log Mean Temperature Difference)+Inlet Temperature
T_Outlet = (NTU*ΔT_LMTD)+T_Inlet

What is Plate Heat Exchanger?

A Plate Heat Exchanger (PHE) is a type of heat exchanger used to transfer heat between two fluids, without the fluids coming into direct contact with each other. It consists of a series of closely spaced metal plates with channels or gaps between them. The fluids flow through these gaps, and heat is exchanged between them through the plates.

What is Significance of NTU in Heat Exchanger?

The NTU (Number of Transfer Units) is a crucial parameter used to analyze and design heat exchangers, including plate heat exchangers. It quantifies the effectiveness of the heat exchanger and provides valuable information about the heat transfer performance. It simplifies the analysis and design process, making it easier to understand and optimize heat exchanger performance.

How to Calculate Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference?

Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference calculator uses Outlet Temperature = (Number of Transfer Units*Log Mean Temperature Difference)+Inlet Temperature to calculate the Outlet Temperature, The Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference formula is defined as the final temperature attained by the fluid after passing through the plate exchanger. Outlet Temperature is denoted by T_Outlet symbol.

How to calculate Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference using this online calculator? To use this online calculator for Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference, enter Number of Transfer Units (NTU), Log Mean Temperature Difference (ΔT_LMTD) & Inlet Temperature (T_Inlet) and hit the calculate button. Here is how the Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference calculation can be explained with given input values -> 334 = (1.2*39.1667)+298.

FAQ

What is Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference?

The Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference formula is defined as the final temperature attained by the fluid after passing through the plate exchanger and is represented as T_Outlet = (NTU*ΔT_LMTD)+T_Inlet or Outlet Temperature = (Number of Transfer Units*Log Mean Temperature Difference)+Inlet Temperature. Number of Transfer Units is a dimensionless parameter used to characterize the heat transfer performance of Heat Exchanger, Log Mean Temperature Difference is the logarithmic temperature difference averaged between 2 fluid streams exchanging heat & Inlet Temperature is the temperature of fluid before entering into a heat exchanger.

How to calculate Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference?

The Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference formula is defined as the final temperature attained by the fluid after passing through the plate exchanger is calculated using Outlet Temperature = (Number of Transfer Units*Log Mean Temperature Difference)+Inlet Temperature. To calculate Outlet Temperature of Fluid in Plate Heat Exchanger given NTU and Log Mean Temperature Difference, you need Number of Transfer Units (NTU), Log Mean Temperature Difference (ΔT_LMTD) & Inlet Temperature (T_Inlet). With our tool, you need to enter the respective value for Number of Transfer Units, Log Mean Temperature Difference & Inlet Temperature 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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