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Unformatted text preview: Answer: (a) =0.8 =0.713 (b) qnet,in= 233 KW/m2 and dT/dt=9.75K/s at t=0 P3. 12.119 (a) (b) and (c) FIND: (a) Preferred roof coating, (b) Roof surface temperature, (c) Heat load through roof ASSUMPTIONS: (1) Turbulent boundary layer development over entire roof, (2) Constant properties, 3) Negligible atmospheric (sky) irradiation, (4) Negligible contact resistance. Answer (a) zinc oxide white (Table A.12) (b) Ts,o=295 (c) q= 704 W P4: 12.125 FIND: Temperature of top surface of wing for (a) ground and (b) in-flight conditions. Answers (a) Ts= 77.6C (b) Ts= - 35.3C P5. 12.128 FIND: Equilibrium temperature of the radiator. T= 439K...
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This note was uploaded on 05/18/2011 for the course MEEG 342 taught by Professor Staff during the Spring '08 term at University of Delaware.
- Spring '08
- Heat Transfer