## What is the heat flux (W/m^2), due to radiation heat transfer, from a black body if the surface temperature is 1000C? The convection heat tr

Question

What is the heat flux (W/m^2), due to radiation heat transfer, from a black body if the surface temperature is 1000C? The convection heat transfer coefficient is 55 W/(m^2 C).

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2 months 2021-08-19T04:56:54+00:00 2 Answers 3 views 0

55000 W/m²

Explanation:

Parameters given:

Surface temperature, T = 1000°C

Hear transfer coefficient, h = 55 W/m²C

Convection heat transfer coefficient is given as:

h = Heat flux/Temperature

Hence, Heat Flux, q, is given as:

q = h * T

q = 55 * 1000 = 55000 W/m²C

55000 W/m²

Explanation:

Using

ψ = Hf/θ……………….. Equation 1

Where Ψ = convection heat transfer, Hf = heat flux, θ = Surface Temperature

Make Hf the subject of the equation,

Hf = ψθ……………… Equation 2

Given: Ψ = 55 W/m².°C, θ = 1000°C

Substitute into equation 2

Hf = 55(1000)

Hf = 55000 W/m²

Hence the heat flux due to radiation = 55000 W/m²