Engineering, 17.04.2020 03:10, SKYBLUE1015
A co-flowing heat exchanger receives air at 700K and 15 MPa and water at 20C and 100 kPa. The two flows exchange energy as they flow alongside each other to the exit, where the air should be cooled to 350K. Investigate the range of water flows necessary per kilogram per second of air flow and the possible water exit temperatures, with the restriction that the minimum temperature difference between the water and air should be 25C. Include an estimation for the overall entropy generation in the process per kilogram of air flow. Support your analysis with graphical plots whenever possible to make your analysis easy to follow and understand. Assume that the heat exchanger loses heat to the environment which is at 15C and estimate the range of that heat loss per kg/s of air flow in order not to violate the Second Law of Thermodynamics (i. e. in order not to get a negative entropy generation amount).
Answers: 2
Engineering, 03.07.2019 15:10, brooklyn674
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 18:20, CelesteN64
Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options
Answers: 2
A co-flowing heat exchanger receives air at 700K and 15 MPa and water at 20C and 100 kPa. The two fl...
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