Enter the heat exchanger capacity (but/h), the heat transfer coefficient (btu/ft^2*h*f), and the temperature difference (F) into the heat Exchanger Area Calculator. The calculator will evaluate the heat Exchanger Area.

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## Heat Exchanger Area Formula

The following formula is used to calculate the heat Exchanger Area.

A = C / (k*dT)

- Where A is the heat Exchanger Area (ft^2)
- C is the heat exchanger capacity (but/h)
- k is the heat transfer coefficient (btu/ft^2*h*f)
- dt is the temperature difference (F)

To calculate the heat exchanger area, divide the heat exchanger capacity by the product of the change in temperature and the heat transfer coefficient.

## How to Calculate Heat Exchanger Area?

The following two example problems outline the steps and information needed to calculate the Heat Exchanger Area.

**Example Problem #1**

- First, determine the heat exchanger capacity (but/h).
- The heat exchanger capacity (but/h) is calculated to be : 1000.

- Next, determine the heat transfer coefficient (btu/ft^2*h*f).
- The heat transfer coefficient (btu/ft^2*h*f) is measured to be: 2.

- Next, determine the temperature difference (F).
- The temperature difference (F) is found to be: 3.

- Finally, calculate the Heat Exchanger Area using the formula above:

A = C / (k*dT)

The values provided above are inserted into the equation below and computed.

A = 1000 / (2*3) = 166.67 (ft^2)

**Example Problem #2**

The variables required for this problem are provided below:

heat exchanger capacity (but/h) = 5000

heat transfer coefficient (btu/ft^2*h*f) = 3

temperature difference (F) = 4

Test your knowledge using the equation and check your answer with the calculator.

A = C / (k*dT) =** **(ft^2)