Q: The working fluid, in a steady flow process flows at a rate of 220 kg/min. The fluid rejects 100 kJ/s passing through the system. The conditions of the fluid at inlet and outlet are given as : C1 = 320 m/s, p1 = 6.0 bar, u1 = 2000 kJ/kg, v1 = 0.36 m3/kg and C2 = 140 m/s, p2 = 1.2 bar, u2 = 1400 kJ/kg, v2 = 1.3 m3/kg. The suffix 1 indicates the condition at inlet and 2 indicates at outlet of the system. Determine the power capacity of the system in MW. The change in potential energy may be neglected. %3D Fud anters Fluid leaves System

Q: The working fluid, in a steady flow process flows at a rate of 220 kg/min. The fluid rejects 100 kJ/s passing through the system. The conditions of the fluid at inlet and outlet are given as : C1 = 320 m/s, p1 = 6.0 bar, u1 = 2000 kJ/kg, v1 = 0.36 m3/kg and C2 = 140 m/s, p2 = 1.2 bar, u2 = 1400 kJ/kg, v2 = 1.3 m3/kg. The suffix 1 indicates the condition at inlet and 2 indicates at outlet of the system. Determine the power capacity of the system in MW. The change in potential energy may be neglected. %3D Fud anters Fluid leaves System

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Q: The working fluid, in a steady flow process flows at a rate of 220 kg/min. The fluid
rejects 100 kJ/s passing through the system. The conditions of the fluid at inlet and outlet
are given as : C1 = 320 m/s, p1 = 6.0 bar, u1 = 2000 kJ/kg, v1 = 0.36 m3/kg and C2 = 140 m/s,
p2 1.2 bar, u2 = 1400 kJ/kg, v2 = 1.3 m3/kg. The suffix 1 indicates the condition at inlet
and 2 indicates at outlet of the system. Determine the power capacity of the system in MW.
The change in potential energy may be neglected.
Fluid
Fluid
leaves
System
enters

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The inlet temperature of an air compressor is T₁=300°K and the outlet temperature is T2-500°K. The compressor operates at a mass flow rate of 0.093kg/sec and the heat lost during the compression is 10kJ/kg. Assume that the air is an ideal gas with Cp=1.004 kJ/(kg°K). Calculate the mechanical power needed to be provided to the compressor shaft. Present your answer in kilo- Watts (kJ/sec).
... Moving to another question will save this response. Question 7 Compressed air with a flowrate of 8 kg/min flows through a two-stage turbine and heat exchanger system as follows: • At the entrance to the system (point 1), the pressure of the air is 8 bar and the temperature of the air is 359 K. • From 1-2 the air passes through a heat exchanger which increases its temperature to 922 K. • From 2-3 the air passes through a turbine, with a pressure ratio of 3 (i.e. P₂/p₂=3). This first turbine has an isentropic efficiency of 65%. • From 3-4 the air passes through a second heat exchanger, which increases its temperature back up to 922 K. • From 4-5 the air passes through a second turbine with a pressure ratio of 3 and an isentropic efficiency of 80%. The properties of air are: cp = 1.005 kJ/kgk, cv = 0.718 kJ/kgK, R = 0.287 kJ/kgK, and y= 1.4. Select the correct value for each of the following values: ₂) a. The heat transfer to the air in the first heat exchanger (i.e. ₁) i in kW: b.…
53.1 64.4 68.6 489 523 atio of 3 (i.e 581 613 659 ge turbine ir is 10 bar reases its t which increa ssure ratio 18.7 21.4 24.4 30.2 37.9 44.5 = 0.287 kJ/k 683 711 744 773 808 er system as foll re of the air is 4 K. > first turbine ha e back up to 90 pic efficiency of !) in kW: 12 >erfectly isentropic (i.e. T') in K:
QH = 7 kW, Q, = 3 kW, W = 5 kW b. Q„ = 7 kW, Q, : c. Q„ = 7 kW, Q, а. = 7 kW, W = 0 kW с. = 4 kW, W = 3 kW d. Q = 7 kW, Q, = 0 kW, W = 7 kW For each of the cases in Problem 5.21, determine if a heat pump satisfies the first law (energy equation) and if it violates the second law.
Task 5 from a to c