Unformatted text preview: Problem 4. Air at static conditions of 300 K and 1 atm enters a straight frictionless duct that is 5 inches in diameter. The flow rate through the pipe is 1 kg/s. Heat is transferred to the air in the pipe and the exit pressure is 0.5 atm. (i) Determine the rate of heat added in watts. (ii) Determine the rate of entropy transfer to the gas [in units of J/K/sec]. P 1 = 1atm T 1 =300K ܳ ሶ [W] P 2 =0.5 atm...
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- Spring '07