Engineering, 31.03.2020 02:20 ben2005
An insulated piston-cylinder device initially contains 300 L of air at 120 kPa and 17 oC. Air is now heated for 15 min by a 200-w resistance heater placed inside the cylinder. The pressure of air is maintained constant during this process. Determine the entropy change of air assuming (a) ) constant specific heats and (b) ) variable specific heats.
Answers: 3
is the temperature change
in the 1st equation, remembering to use ideal gas law in it to have the variables that are given in the problem. Shown below:
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An insulated piston-cylinder device initially contains 300 L of air at 120 kPa and 17 oC. Air is now...
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