## Number of Transfer Units for Plate Heat Exchanger Solution

STEP 0: Pre-Calculation Summary
Formula Used
Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD
NTU = (TOutlet-TInlet)/ΔTLMTD
This formula uses 4 Variables
Variables Used
Number Of Transfer Units-NTU - Number Of Transfer Units-NTU is a dimensionless parameter used to characterize the heat transfer performance of Heat Exchanger.
Outlet Temperature - (Measured in Kelvin) - Outlet Temperature of Fluid is temperature that it attained after passing through a heat exchanger.
Inlet Temperature - (Measured in Kelvin) - Inlet Temperature is the temperature of fluid before entering into a heat exchanger.
LMTD - (Measured in Kelvin) - LMTD is the log mean temperature difference between 2 fluid streams exchanging heat.
STEP 1: Convert Input(s) to Base Unit
Outlet Temperature: 60 Kelvin --> 60 Kelvin No Conversion Required
Inlet Temperature: 24 Kelvin --> 24 Kelvin No Conversion Required
LMTD: 30 Kelvin --> 30 Kelvin No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
NTU = (TOutlet-TInlet)/ΔTLMTD --> (60-24)/30
Evaluating ... ...
NTU = 1.2
STEP 3: Convert Result to Output's Unit
1.2 --> No Conversion Required
1.2 <-- Number Of Transfer Units-NTU
(Calculation completed in 00.004 seconds)
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## < 17 Heat Exchangers Calculators

Pressure Drop of Vapor in Condensers given Vapors on Shell Side
Shell Side Pressure Drop = 0.5*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)
Shell Side Pressure Drop in Heat Exchanger
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)
Shell Side Heat Transfer Coefficient
Shell Side Heat Transfer Coefficient = Heat Transfer Factor*Reynold Number*(Prandlt Number^0.333)*(Thermal Conductivity/Equivalent Diameter)*((Fluid Viscosity at BulThermal Conductivity Temperature/Fluid Viscosity at Wall Temperature)^0.14)
Tube Side Pressure Drop in Heat Exchanger for Turbulent Flow
Tube Side Pressure Drop = Number of Tube-Side Passes*(8*Friction Factor*(Length of Tube/Pipe Inner Diameter)*(Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.14+2.5)*(Fluid Density/2)*(Fluid Velocity^2)
Tube Side Pressure Drop in Heat Exchanger for Laminar Flow
Tube Side Pressure Drop = Number of Tube-Side Passes*(8*Friction Factor*(Length of Tube/Pipe Inner Diameter)*(Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.25+2.5)*(Fluid Density/2)*(Fluid Velocity^2)
Reynolds Number for Condensate Film Outside Vertical Tubes in Heat Exchanger
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
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
Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2)
Shell Area for Heat Exchanger
Shell Area = (Tube Pitch-Pipe Outer Diameter)*Shell Diameter*(Baffle Spacing/Tube Pitch)
Stack Design Pressure Draft for Furnace
Draft Pressure = 0.0342*(Stack Height)*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature)
Equivalent Diameter for Square Pitch in Heat Exchanger
Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2))
Equivalent Diameter for Triangular Pitch in Heat Exchanger
Equivalent Diameter = (1.10/Pipe Outer Diameter)*((Tube Pitch^2)-0.917*(Pipe Outer Diameter^2))
Viscosity Correction Factor for Shell and Tube Heat Exchanger
Viscosity Correction Factor = (Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^0.14
Number of Transfer Units for Plate Heat Exchanger
Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD
Number of Tubes in Center Row Given Bundle Diameter and Tube Pitch
Number of Tubes in Vertical Tube Row = Bundle Diameter/Tube Pitch
Number of Baffles in Shell and Tube Heat Exchanger
Number of Baffles = (Length of Tube/Baffle Spacing)-1
Shell Diameter of Heat Exchanger Given Clearance and Bundle Diameter
Shell Diameter = Shell Clearance+Bundle Diameter

## Number of Transfer Units for Plate Heat Exchanger Formula

Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD
NTU = (TOutlet-TInlet)/ΔTLMTD

## 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 Number of Transfer Units for Plate Heat Exchanger?

Number of Transfer Units for Plate Heat Exchanger calculator uses Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD to calculate the Number Of Transfer Units-NTU, The Number Of Transfer Units For Plate Heat Exchanger formula is defined as a dimensionless parameter that characterizes the heat transfer performance of Heat Exchanger. It determines the effectiveness of heat exchanger. Number Of Transfer Units-NTU is denoted by NTU symbol.

How to calculate Number of Transfer Units for Plate Heat Exchanger using this online calculator? To use this online calculator for Number of Transfer Units for Plate Heat Exchanger, enter Outlet Temperature (TOutlet), Inlet Temperature (TInlet) & LMTD (ΔTLMTD) and hit the calculate button. Here is how the Number of Transfer Units for Plate Heat Exchanger calculation can be explained with given input values -> 1.333333 = (60-24)/30.

### FAQ

What is Number of Transfer Units for Plate Heat Exchanger?
The Number Of Transfer Units For Plate Heat Exchanger formula is defined as a dimensionless parameter that characterizes the heat transfer performance of Heat Exchanger. It determines the effectiveness of heat exchanger and is represented as NTU = (TOutlet-TInlet)/ΔTLMTD or Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD. Outlet Temperature of Fluid is temperature that it attained after passing through a heat exchanger, Inlet Temperature is the temperature of fluid before entering into a heat exchanger & LMTD is the log mean temperature difference between 2 fluid streams exchanging heat.
How to calculate Number of Transfer Units for Plate Heat Exchanger?
The Number Of Transfer Units For Plate Heat Exchanger formula is defined as a dimensionless parameter that characterizes the heat transfer performance of Heat Exchanger. It determines the effectiveness of heat exchanger is calculated using Number Of Transfer Units-NTU = (Outlet Temperature-Inlet Temperature)/LMTD. To calculate Number of Transfer Units for Plate Heat Exchanger, you need Outlet Temperature (TOutlet), Inlet Temperature (TInlet) & LMTD (ΔTLMTD). With our tool, you need to enter the respective value for Outlet Temperature, Inlet Temperature & LMTD and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know