Q.2. Air enters a steady-flow heat exchanger with a mass flow rate of 2 kg/s as shown in Figure. Determine (a) the rate of heat transfer to the air in the heat exchanger, (b) the power output from the turbine assuming no heat loss, and (c) the velocity at exit from the nozzle. (Cp atr = 1.005 kJ/kg. K) T-600C V=3 m/s %3D T- 12 C Air Нeat v-3 m/s Exchanger Turbine T= 200 C V - 25 m/s T= 160 C Nozzle

Q.2. Air enters a steady-flow heat exchanger with a mass flow rate of 2 kg/s as shown in Figure. Determine (a) the rate of heat transfer to the air in the heat exchanger, (b) the power output from the turbine assuming no heat loss, and (c) the velocity at exit from the nozzle. (Cp atr = 1.005 kJ/kg. K) T-600C V=3 m/s %3D T- 12 C Air Нeat v-3 m/s Exchanger Turbine T= 200 C V - 25 m/s T= 160 C Nozzle

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

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

Q.2. Air enters a steady-flow heat exchanger with a mass flow rate of 2
kg/s as shown in Figure. Determine (a) the rate of heat transfer to the air
in the heat exchanger, (b) the power output from the turbine assuming no
heat loss, and (c) the velocity at exit from the nozzle. (Cp atr = 1.005 kJ/kg. K)
T=600 C
T- 12 C
V=3 m/s
Air
Нeat
v-3 m/s Exchanger
Turbine
T= 200 C
V - 25 m/s
T= 160 C
Nozzle

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In a heat exchanger, the heat transfer depends on the choice of the control volume
in a 10-m long center-current flow tubular heat exchanger, a liquid food, flowing in the inner pipe (inside diameter 5 cm), is heated from 4 to 60 C for pasteurization. In the outer tube (diameter 10 cm), hot water enters at 95 C and exits at 80 C. A) If the mass flow rate of the hot water is 5 kg/s, what is the flow rate of the pasteurized product? The specific heat of the water is 4.2 kJ/(kg C), specific heat of product is 3.8 kJ/(kg C) B) what is the log mean temperature difference C) What is the overall heat transfer coefficient for the heat exchanger based on the outside surface?
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:
Help needed with heat exchanger question
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Consider the same problem in which an axial compressor with a mean diameter of 0.8 m is being designed to run at 3000 rpm. The whirl velocities at the inlet and outlet are 5m/s and 30 m/s, respectively. The air mass flow rate through the compressor is 2 kg/s at a temperature of 27 °C. Assume C, of air equal to 1000 J/kg-K and Cy = 718 J/kg-K. %3D The temperature change is equal to O 3.14 K 5.28 K 7.42 K OOK