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

Answers ( )

    0
    2021-08-19T04:58:03+00:00

    Answer:

    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

    0
    2021-08-19T04:58:06+00:00

    Answer:

    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

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