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For a heat exchanger the inlet and outlet temperatures of hot and cold fluid are
The type of heat exchanger is
Th1 = 150oC Tc1 = 20oC
Th2 = 70oC Tc2 = 80oC
- a)parallel flow
- b)counter flow
- c)both parallel and counter flow configurations are possible for given values
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
For a heat exchanger the inlet and outlet temperatures of hot and col...
From the given condition of temperature, we see that exit temperature of cold fluid is greater than exit temperature of hot fluid. This is possible only in case of counter flow heat exchanger.
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For a heat exchanger the inlet and outlet temperatures of hot and col...
Counter flow is the correct type of heat exchanger
Counter flow heat exchangers are more efficient compared to parallel flow heat exchangers because they allow for a greater temperature difference between the hot and cold fluids. In this case, the hot fluid enters at a higher temperature than the cold fluid, making it suitable for a counter flow configuration.
Explanation:
- In counter flow heat exchangers, the hot and cold fluids flow in opposite directions, maximizing the temperature difference between the two fluids at any given point within the exchanger.
- As the hot fluid enters at a higher temperature (Th1 = 150oC) and exits at a lower temperature (Th2 = 70oC), while the cold fluid enters at a lower temperature (Tc1 = 20oC) and exits at a higher temperature (Tc2 = 80oC), a counter flow configuration is ideal to take advantage of this temperature difference.
- The counter flow arrangement allows for efficient heat transfer between the two fluids, resulting in a higher overall heat transfer rate.
- Parallel flow heat exchangers, on the other hand, have the hot and cold fluids flowing in the same direction, which limits the temperature difference between the two fluids and decreases the overall heat transfer efficiency.
Therefore, based on the given inlet and outlet temperatures of the hot and cold fluids, a counter flow configuration is the most suitable type of heat exchanger for this scenario.
Counter flow heat exchangers are more efficient compared to parallel flow heat exchangers because they allow for a greater temperature difference between the hot and cold fluids. In this case, the hot fluid enters at a higher temperature than the cold fluid, making it suitable for a counter flow configuration.
Explanation:
- In counter flow heat exchangers, the hot and cold fluids flow in opposite directions, maximizing the temperature difference between the two fluids at any given point within the exchanger.
- As the hot fluid enters at a higher temperature (Th1 = 150oC) and exits at a lower temperature (Th2 = 70oC), while the cold fluid enters at a lower temperature (Tc1 = 20oC) and exits at a higher temperature (Tc2 = 80oC), a counter flow configuration is ideal to take advantage of this temperature difference.
- The counter flow arrangement allows for efficient heat transfer between the two fluids, resulting in a higher overall heat transfer rate.
- Parallel flow heat exchangers, on the other hand, have the hot and cold fluids flowing in the same direction, which limits the temperature difference between the two fluids and decreases the overall heat transfer efficiency.
Therefore, based on the given inlet and outlet temperatures of the hot and cold fluids, a counter flow configuration is the most suitable type of heat exchanger for this scenario.
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For a heat exchanger the inlet and outlet temperatures of hot and cold fluid areThe type of heat exchanger isTh1 = 150oC Tc1 = 20oCTh2 = 70oC Tc2 = 80oCa) parallel flowb) counter flowc) both parallel and counter flow configurations are possible for given valuesd) None of theseCorrect answer is option 'B'. Can you explain this answer?
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For a heat exchanger the inlet and outlet temperatures of hot and cold fluid areThe type of heat exchanger isTh1 = 150oC Tc1 = 20oCTh2 = 70oC Tc2 = 80oCa) parallel flowb) counter flowc) both parallel and counter flow configurations are possible for given valuesd) None of theseCorrect answer is option 'B'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about For a heat exchanger the inlet and outlet temperatures of hot and cold fluid areThe type of heat exchanger isTh1 = 150oC Tc1 = 20oCTh2 = 70oC Tc2 = 80oCa) parallel flowb) counter flowc) both parallel and counter flow configurations are possible for given valuesd) None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a heat exchanger the inlet and outlet temperatures of hot and cold fluid areThe type of heat exchanger isTh1 = 150oC Tc1 = 20oCTh2 = 70oC Tc2 = 80oCa) parallel flowb) counter flowc) both parallel and counter flow configurations are possible for given valuesd) None of theseCorrect answer is option 'B'. Can you explain this answer?.
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