The image above represents net heat flux for radiation.

To compute for net heat flux for radiation, four essential parameters are needed and these parameters are **Emissivity (ε), Area (A), Emitting Power of Black Body (e _{b})** and

**Radiosity (J).**

The formula for calculating net heat flux for radiation:

q_{net} = ^{εAeb} / _{1 – ε} – J

Where:

q_{net} = Net Heat Flux for Radiation

ε = Emissivity

A = Area

e_{b} = Emitting Power of Black Body

J = Radiosity

Let’s solve an example;

Find the net heat flux for radiation when the emissivity is 22, the area is 2, the emitting power of black body is 10 and the radiosity is 14.

This implies that;

ε = Emissivity = 22

A = Area = 2

e_{b} = Emitting Power of Black Body = 10

J = Radiosity = 14

q_{net} = ^{εAeb} / _{1 – ε} – J

q_{net} = ^{(22)(2)(10)} / _{1 – 22} – 14

q_{net} = ^{440} / _{-21} – 14

q_{net} = -20.9523 – 14

q_{net} = -34.95

Therefore, the **net heat flux for radiation **is **-34.95 W.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the net heat flux for radiation.

To get the answer and workings of the net heat flux for radiation using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 2,000 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Materials and Metallurgical **under **Engineering****.**

Now, Click on **Radiation Heat Transfer **under **Materials and Metallurgical**

Now, Click on **Net Heat Flux for Radiation **under **Radiation Heat Transfer**

The screenshot below displays the page or activity to enter your values, to get the answer for the net heat flux for radiation according to the respective parameter which is the **Emissivity (ε), Area (A), Emitting Power of Black Body (e _{b})** and

**Radiosity (J).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Emissivity (ε)** is **22**,** Area (A)** is **2**,** Emitting Power of Black Body (e _{b})** is

**10**and

**Radiosity (J)**is

**1**

**4**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the net heat flux for radiation and presents the formula, workings and steps too.