020110 notes sec3

# 020110 notes sec3 - NOTES Section 3 ChE 120B 1 Simple model...

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NOTES: Section 3 ChE 120B 1) Simple model – uniform, no gradient in internal temperature h(T – T f ) Energy balance Input – output = accumulation 0 - hA (T – T f ) = dt d ( ρ VH) dH = C p dT for solids, liquids -hA (T – T f ) = ρ C p V dt dT Let θ = f f 0 T - T T - T T 0 - initial temperature ( T 0 – T f ) θ = (T – T f ) ( T 0 – T f ) d θ = dT -hA (T 0 – T f ) θ = ρ C p V(T 0 – T f ) dt d θ p CV -hA ρ θ = dt d

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NOTES: Section 3 We are presented with a new way to tell time τ - dimensionless time: τ = p CV hAt ρ p hA t ρτ
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## This note was uploaded on 03/22/2011 for the course CHE 120B taught by Professor Zasadinski during the Winter '10 term at UCSB.

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020110 notes sec3 - NOTES Section 3 ChE 120B 1 Simple model...

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