092602_rec3

092602_rec3 - Page 1 of 1 Problem 2: A dive shop worker...

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16.050 Thermal Energy Recitation #3 – Fall 2002 Problem 1: The turbine section of a Brayton cycle gas turbine receives the hot compressed air at 10 bar, 1200 K expands it to 1 bar and develops a gross power output of 10 MW. Air enters the compressor section at 1 bar, 300 K. Assume air behaves as a perfect gas with constant specific heat, cp=1 kJ/kgK. Find: a) mass flow rate of air required b) compressor power output required c) net power output d) cycle efficiency e) compressor exit temperature required for maximum power output
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Unformatted text preview: Page 1 of 1 Problem 2: A dive shop worker fills a used SCUBA tank with the shop compressor. The tank volume is 3 m 3 , the initial tank pressure is 35 bar, and the initial temperature of the air is 290 K. If the compressor supplies air at 315 K and stops filling the tank at 225 bar, find: a) the heat transferred to the tank if the tank temperature remains constant throughout the fill. b) the finial temperature of the tank if the tank is well insulated. You may assume air is a perfect gas with cp=1 kJ/kgK. Page 2 of 2...
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This note was uploaded on 01/28/2012 for the course AERO 16.050 taught by Professor Zoltanspakovszky during the Fall '02 term at MIT.

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092602_rec3 - Page 1 of 1 Problem 2: A dive shop worker...

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