The image above represents emissive power.

To compute for emissive power, two essential parameters are needed and these parameters are **Area of Emitting Body (A)** and **Geometric Body Constant (F).**

The formula for calculating emissive power:

Q = AF

Where:

Q = Emissive Power

A = Area of Emitting Body

F = Geometric Body Constant

Let’s solve an example;

Find the emissive power when the area of emitting body is 12 and the geometric body constant is 6.

This implies that;

A = Area of Emitting Body = 12

F = Geometric Body Constant = 6

Q = AF

Q = 12(6)

Q = 72

Therefore, the **emissive power **is **72 W.**

**Calculating the Area of Emitting Body when the Emissive Power and the Geometric Body Constant is Given.**

A = ^{Q} / _{F}

Where:

A = Area of Emitting Body

Q = Emissive Power

F = Geometric Body Constant

Let’s solve an example;

Find the area of emitting body when the emissive power is 32 and the geometric body constant is 8.

This implies that;

Q = Emissive Power = 32

F = Geometric Body Constant = 8

A = ^{Q} / _{F}

A = ^{32} / _{8}

A = 4

Therefore, the **area of emitting body **is **4.**

Continue reading How to Calculate and Solve for Emissive Power | Radiation Heat Transfer