Cal Poly Pomona CHE 312 - Problem Set #9 (2 pages)

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Problem Set #9



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Problem Set #9

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Pages:
2
School:
California State Polytechnic University, Pomona
Course:
Che 312 - Transport Phenomena II
Transport Phenomena II Documents

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CHE312 Problem set 9 1 8 Copy the program heat9 exe from the class distribution folder to your flash or H drive You can also download the program from the website https www csupomona edu tknguyen che312 homework htm Run the program and choose problem 1 8 in any order Solve the problems with the data provided by the program copy the problem statement to Word The program will check your answer and provide an answer code when you click on Check Copy the answer code and paste them after the problem statement Your need to present all your work in details to get full credit Your work should look like this 1 An annealing process shown below uses a hot plate operating at an elevated temperature Th The wafer initially at a temperature of Tw i is suddenly positioned at a gap separation h 0 5 mm from the hot plate The emissivity of both the hot plate and the wafer is 1 0 The silicon wafer has a thickness of d 0 80 mm a density of 2700 kg m3 and a specific heat of 1050 J kg K The thermal conductivity of the gas in the gap is 0 0436 W m K The wafer is insulated at the bottom Stefan Boltzmann constant 5 67 10 8 W m2 K4 For Th 700oC and Tw i 25oC calculate the radiative heat flux across the gap Problem 1 Correct Code 4313336481 Solution Hot plate Th gap h Stagnant gas k Silicon wafer T w The radiative heat flux across the gap 5 67 10 8 700 273 4 25 273 4 50 370 W m2 Box the answer s 9 1 Click on the CHE 312 distribution folder copy the folder ICMd to your directory or your flash drive Open the folder CHE312 and double click on DOSBox exe When the prompt C appears type simp and press ENTER to run the program Copy and report the score or lesson number and performance number from the program Type e or exit and press ENTER to exit the DOSBox program Turn in the Lesson and performance numbers of the program Simp Lesson Number Performance number You need to run 1 Water Flowing Down a Vertical Flat Surface 2 Water Flowing Through a Vertical Circular Tube 3 Heat Conduction In An Electric



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