Q4) Consider a tube-and-shell heat exchanger consisting of one single shell and one tube, each executing one pass. The hot air of 100°C enters the shell at the rate of 1m³/s. The water of 10°C enters the tube at a mass rate of 0.16kg/s. The density and the heat capacity of the hot air are assumed to constant, Pair = 0.9461 kg/m³ and Cp, air = 1011 J/kg. °C. The density and the heat capacity of the cold water are assumed constant, Pwater = 999.65 kg/m³ and Cp.water = 4190 J/kg. °C. Please note you should show your calculations for all of your answers to the following questions. Parallel-flow Thimni Hot air Counter-flow Tho.mno4 comco Tho, mno Answer the following questions: a) b) c) d) Temel Cold water Teo. mco Thi mn Hot air Which is more efficient? Parallel-flow or counter-flow? Why? For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the tube? For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the shell? For a counter-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the tube? Temel Cold water
Q4) Consider a tube-and-shell heat exchanger consisting of one single shell and one tube, each executing one pass. The hot air of 100°C enters the shell at the rate of 1m³/s. The water of 10°C enters the tube at a mass rate of 0.16kg/s. The density and the heat capacity of the hot air are assumed to constant, Pair = 0.9461 kg/m³ and Cp, air = 1011 J/kg. °C. The density and the heat capacity of the cold water are assumed constant, Pwater = 999.65 kg/m³ and Cp.water = 4190 J/kg. °C. Please note you should show your calculations for all of your answers to the following questions. Parallel-flow Thimni Hot air Counter-flow Tho.mno4 comco Tho, mno Answer the following questions: a) b) c) d) Temel Cold water Teo. mco Thi mn Hot air Which is more efficient? Parallel-flow or counter-flow? Why? For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the tube? For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the shell? For a counter-flow heat exchanger, if the pipe length is infinite long, what is the outlet temperature of the tube? Temel Cold water
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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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
Transcribed Image Text:Q4)
Consider a tube-and-shell heat exchanger consisting of one single shell and one tube, each
executing one pass. The hot air of 100°C enters the shell at the rate of 1m³/s. The water of 10°C
enters the tube at a mass rate of 0.16kg/s. The density and the heat capacity of the hot air are
assumed to constant, Pair = 0.9461 kg/m³ and Cp, air = 1011 J/kg. °C. The density and the heat
capacity of the cold water are assumed constant, Pwater = 999.65 kg/m³ and Cp,water = 4190
J/kg. °C. Please note you should show your calculations for all of your answers to the following
questions.
Parallel-flow
Thi, mni
Hot air
Counter-flow
Tho, mno
Teo meo.
Tho, mn,o
Answer the following questions:
a)
b)
c)
d)
Tel, mel
Cold
water
Tc.o. mc.o
Thi mhi Hot air
Which is more efficient? Parallel-flow or counter-flow? Why?
For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the
outlet temperature of the tube?
For a parallel-flow heat exchanger, if the pipe length is infinite long, what is the
outlet temperature of the shell?
For a counter-flow heat exchanger, if the pipe length is infinite long, what is the
outlet temperature of the tube?
Телится
Cold
water
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