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ps8_final_to_CMS

# ps8_final_to_CMS - 16.050 Thermal Energy Problem Set#8 Fall...

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16.050 Thermal Energy Problem Set #8– Fall 2002 Time spent on problems: Problem 1: Problem 2: Problem 3: Problem 4: Problem 5: Problem 6: Problem 7:

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16.050 Thermal Energy Problem Set #8 – Fall 2002 Do all problems. Please use a separate sheet of paper for each problem. 1. Determine the adiabatic flame temperature when liquid octane (C 8 H 18 ) at 25 o C is burned with 300% theoretical air at 25 o C in a steady flow process at 1 bar. Neglect dissociation. Use the bottom table on p. 17 of the supplemental handout to account for variation of cp with temperature. ( i.e. use = = Tad C T p d c h 25 ) ( τ τ ) 2. A composite wall is made of two plane slabs of different conductivity. The wall is shown in the figure below. Both slabs are 0.1 m thick. Substance 1 has a thermal conductivity of 100 W/mK and substance 2 has a thermal conductivity of 10 W/mK. The heat flux at the left hand side of slab 1 is given as 10 4 W/m 2 . The temperature T 3 at the right hand side of slab 2 is given as 300 K. All conditions occur in steady-state.
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ps8_final_to_CMS - 16.050 Thermal Energy Problem Set#8 Fall...

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