# Coaxial Heat Exchanger Calculator

## Introduction

Coaxial heat exchangers are widely used in various industries for efficient heat transfer between two fluid streams. Calculating the heat transfer in such a system can be a complex task, but our HTML calculator simplifies this process. This tool allows you to input the hotter and lower temperatures, the heat transfer coefficient, and the exchange area to find the heat transfer quickly and accurately.

## How to Use

Using the Coaxial Heat Exchanger Calculator is straightforward. Follow these steps:

1. Input the hotter temperature (T2) in the designated field. This is the temperature of the hot fluid stream.
2. Input the lower temperature (T1) in the provided space. This is the temperature of the cold fluid stream.
3. Specify the heat transfer coefficient (U) in the respective box. The heat transfer coefficient is a measure of how efficiently heat is transferred between the fluids.
4. Enter the area (A) of the heat exchanger in the provided field. This is the surface area through which heat is exchanged.

## Formula

The formula used by this calculator to determine the heat transfer (Q) in the coaxial heat exchanger is:

Q = U × A × LMTD

Where:

• Q is the heat transfer rate.
• U is the heat transfer coefficient.
• A is the area of the heat exchanger.
• LMTD is the Log Mean Temperature Difference between the two fluid streams, which is a calculated value.

## Example

Let’s illustrate how this calculator works with an example:

Suppose you have a coaxial heat exchanger with the following parameters:

• Hotter temperature (T2) = 150°C
• Lower temperature (T1) = 50°C
• Heat transfer coefficient (U) = 250 W/m²°C
• Area (A) = 2 m²

By plugging these values into the calculator, you will find the heat transfer rate (Q):

Q = U × A × LMTD

Q = 250 W/m²°C × 2 m² × LMTD

Now, you can calculate LMTD using standard methods and then use it to find the heat transfer rate.

## FAQ’s

Q1. What is Log Mean Temperature Difference (LMTD)?

The Log Mean Temperature Difference (LMTD) is a parameter used in heat exchanger calculations. It is a measure of the temperature difference between the two fluid streams over the length of the heat exchanger.

Q2. What are the units of heat transfer coefficient (U)?

The units of heat transfer coefficient (U) are typically Watts per square meter per degree Celsius (W/m²°C) in the International System of Units (SI).

Q3. Can this calculator be used for different units of temperature and area?

Yes, you can use different units for temperature and area, but make sure they are consistent. The calculator will provide the result in the units you input.

## Conclusion

The Coaxial Heat Exchanger Calculator simplifies the process of determining heat transfer in a coaxial heat exchanger. By providing the necessary input values, you can quickly find the heat transfer rate using the formula Q = U × A × LMTD. This tool is valuable for engineers and professionals working in heat exchanger design and analysis. Try it out to streamline your calculations and make your work more efficient.