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25 April, 09:49

What is the heat-loss rate through the slab if the ground temperature is 7 ∘c while the interior of the house is 23 ∘c?

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  1. 25 April, 10:39
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    13714.286 W

    Explanation:

    full question

    A 10m*15m house is built on a 14 cm - thick concrete slab. What is the heat-loss rate through the slab if the ground temperature is 7 ∘C while the interior of the house is 23 ∘C?

    solution

    Given: A (10 m x 15 m) = 150 m²

    L = 14 cm = 0.14 m and

    ΔT = 16 ∘C

    Rate of heat loss (Q/t) = KA. ΔT (Here, K = 0.8 w/m∘C)

    L

    Q/t = 0.8 * 150 * 16

    0.14

    = 13714.286 W
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