Enter the fluid mass flow rate through the exchanger (kg/s) and the latent heat (kJ/kg) into the Heat Exchanger Duty Calculator. The calculator will evaluate the Heat Exchanger Duty.

## Heat Exchanger Duty Formula

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

HED = M * LH

Variables:

• HED is the Heat Exchanger Duty (kW)
• M is the fluid mass flow rate through the exchanger (kg/s)
• LH is the latent heat (kJ/kg)

To calculate heat exchanger duty, multiply the fluidmass flow rate by the latent heat.

## How to Calculate Heat Exchanger Duty?

The following steps outline how to calculate the Heat Exchanger Duty.

1. First, determine the fluid mass flow rate through the exchanger (kg/s).
2. Next, determine the latent heat (kJ/kg).
3. Next, gather the formula from above = HED = M * LH.
4. Finally, calculate the Heat Exchanger Duty.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

fluid mass flow rate through the exchanger (kg/s) = 75

latent heat (kJ/kg) = 100

HED = M * LH = ?