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Unformatted text preview: W m K ⋅ := α 1.75 10 7 − ⋅ m 2 s := T air 303K := T i 275K := T mid 288K := Assumptions 1. Long cylinder, L/R > 10 2. 1-d conduction in r direction (if LC not valid) 3. neglect radiation 4. check to see if Lumped Capacitance is valid 5. If LC is not valid, check to see if 1-term approximate solution is valid Is lumped capacitance valid? L c r 2 := for cylinder L c 0.04 m = Bi h L c ⋅ k := Bi 2 = Bi is > 0.1, so LC method is NOT valid, must consider spatial effects. Recalculate Bi for Table 5.1...
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This note was uploaded on 03/11/2011 for the course CHEME 333 taught by Professor Anthony during the Spring '11 term at UNL.
- Spring '11