The image above represents heat flux.

To compute for heat flux, three essential parameters are needed and these parameters are **Heat Emission (h), Surface Temperature (T _{s}) **and

**Initial Temperature (T**

_{o}).The formula for calculating heat flux:

q_{x} = h(T_{s} – T_{o})

Where:

q_{x} = Heat Flux (T)

h = Heat Emission

T_{s} = Surface Temperature

T_{o} = Initial Temperature

Let’s solve an example;

Find the heat flux when the heat emission is 21, the surface temperature is 12 and the initial temperature is 10.

This implies that;

h = Heat Emission = 21

T_{s} = Surface Temperature = 12

T_{o} = Initial Temperature = 10

q_{x} = h(T_{s} – T_{o})

q_{x} = 21(12 – 10)

q_{x} = 21(2)

q_{x} = 42

Therefore, the **heat flux **is **42 W.**

**Calculating the Heat Emission when the Heat Flux, the Surface Temperature and the Initial Temperature is Given.**

h = ^{qx} / _{T}_{s} – T_{o}

Where:

h = Heat Emission

q_{x} = Heat Flux (T)

T_{s} = Surface Temperature

T_{o} = Initial Temperature

Let’s solve an example;

Find the heat emission when the heat flux is 40, the surface temperature is 20 and the initial temperature is 10.

This implies that;

q_{x} = Heat Flux (T) = 40

T_{s} = Surface Temperature = 20

T_{o} = Initial Temperature = 10

h = ^{qx} / _{T}_{s} – T_{o}

h = ^{40} / _{20 – 10}

h = ^{40} / _{10}

h = 4

Therefore, the **heat emission **is **4.**

Continue reading How to Calculate and Solve for Heat Flux | Solidification of Metals