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7 July, 17:46

One cubic foot of water can store 312 Btu of thermal energy. On a cold winter day a well-constructed home may require 100,000 Btu of nighttime space heating. What is the volume of water required to store this energy?

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  1. 7 July, 18:02
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    Heat capacity = mass x specific heat

    heat capacity ∝ mass

    ∝ volume

    heat capacity ∝ volume

    H₁ / H₂ = V₁ / V₂

    H₁ and H₂ are heat capacity corresponding to volume V₁ and V₂.

    312 / 100000 = 1 / V₂

    V₂ = 100000 / 312

    = 320.51 cubic foot.
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