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●Equação de Difusão de Calorcom Variação de ÁreaBalanço de Energia na seção do abaixo:˙E A⋅A⋅dx⋅c p ⋅ ∂T∂t˙=qxE e Ė s−q x dq x ˙ E G˙q A⋅dxdxÁreaA(x)Transferência de Calor e Massa IProf. Dr. Vicente Luiz Scalonsendo dq x=− ∂∂Tk A x∂ x ∂ x ⋅dxq xq x dq x⋅A x⋅dx⋅c p⋅ ∂T∂t = ∂ k⋅A x⋅∂T∂ x ∂ x dx ˙q A x⋅dx⋅c p⋅ ∂T∂t = 1A x∂∂Tk⋅A x∂ x ∂ x ˙q

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