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294.000 = 21000 .∆T
294000 : 21000 = ∆T
∆T = 14
Q = 294 kj
C.air = 4.200 J/kg⁰c
Dit : ΔT.... ?
jwb : ΔT =
=294 x 5 x 4.200 J/kg°c
= 6.1744.000 kj