Enter the cross sectional area (m^2), the flow speed (m/s), specific heat (kJ/kg-k), temperature difference (K), and the density (kg/m^3) into the Waste Heat Calculator. The calculator will evaluate the Waste Heat.

## Waste Heat Formula

The following formula is used to calculate the Waste Heat.

**Qwaste = A * V * p * Cp * T**

Variables:

- Qwaste is the Waste Heat (kW)
- A is the cross sectional area (m^2)
- V is the flow speed (m/s)
- p is the density (kg/m^3)
- Cp is the specific heat (kJ/kg-K)
- T is the temperature difference (K)

## How to Calculate Waste Heat?

The following steps outline how to calculate the Waste Heat.

- First, determine the cross sectional area (m^2).
- Next, determine the flow speed (m/s).
- Next, determine the density (kg/m^3).
- Next, gather the formula from above = Qwaste = A * V * p * Cp * T.
- Finally, calculate the Waste Heat.
- 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.

cross sectional area (m^2) = 4

flow speed (m/s) = 30

density (kg/m^3) = 100

specific heat (kJ/kg-K) = 1.21

temperature difference (K) = 2.5

Qwaste = A * V * p * Cp * T =** ** ?