Chemical Engineering Exam > Chemical Engineering Questions > Pick out the wrong statement.a)Orifice baffle...
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Pick out the wrong statement.
- a)Orifice baffles are never used in a shell and tube heat exchanger.
- b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.
- c)In a horizontal tube evaporator, surface blanketing by air is avoided.
- d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.
Correct answer is option 'A'. Can you explain this answer?
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Pick out the wrong statement.a)Orifice baffles are never used in a she...
Baffles
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serve two functions: Most importantly, they support the
tubes in the proper position during assembly and operation and prevent vibration of the
tubes caused by flow-induced eddies, and secondly, they guide the
shell-side flow back and forth across the
tube field, increasing the velocity and the
heat transfer
Most Upvoted Answer
Pick out the wrong statement.a)Orifice baffles are never used in a she...
Explanation:
Orifice baffles are indeed used in a shell and tube heat exchanger. The wrong statement is option 'A'.
Shell and Tube Heat Exchanger:
A shell and tube heat exchanger is a device used for transferring heat between two fluids. It consists of a series of tubes enclosed in a cylindrical shell. The fluid in the tubes (tube side) exchanges heat with the fluid surrounding the tubes (shell side) through the tube walls.
Orifice Baffles:
Orifice baffles are commonly used in shell and tube heat exchangers to enhance heat transfer and improve fluid flow. They are perforated plates with holes or orifices that are placed inside the shell. These orifices create turbulence and increase the velocity of the shell side fluid, promoting better heat transfer.
Pressure Drop and Tube Pitch:
The pressure drop on the shell side of a heat exchanger depends on various factors, including the tube pitch. Tube pitch refers to the distance between the centerlines of adjacent tubes in the heat exchanger. A smaller tube pitch leads to a higher pressure drop due to increased fluid friction.
Horizontal Tube Evaporator:
In a horizontal tube evaporator, the tubes are oriented horizontally, and the fluid to be evaporated flows inside the tubes. The heat transfer in this type of evaporator occurs primarily through convection. To ensure efficient heat transfer, surface blanketing by air is avoided. Surface blanketing refers to the formation of a layer of stagnant air on the tube surface, which inhibits heat transfer. By avoiding surface blanketing, the heat transfer coefficient is improved, and the evaporator operates more efficiently.
Floating Heads in Heat Exchangers:
Floating heads are used in shell and tube heat exchangers to allow for differential thermal expansion between the shell side and tube side. There are different types of floating heads, including split ring type and pull through type. These floating heads ensure that the tubes can expand and contract freely without exerting excessive stress on the tube sheet or tube joints.
Conclusion:
The wrong statement is option 'A' because orifice baffles are commonly used in a shell and tube heat exchanger to enhance heat transfer and fluid flow.
Orifice baffles are indeed used in a shell and tube heat exchanger. The wrong statement is option 'A'.
Shell and Tube Heat Exchanger:
A shell and tube heat exchanger is a device used for transferring heat between two fluids. It consists of a series of tubes enclosed in a cylindrical shell. The fluid in the tubes (tube side) exchanges heat with the fluid surrounding the tubes (shell side) through the tube walls.
Orifice Baffles:
Orifice baffles are commonly used in shell and tube heat exchangers to enhance heat transfer and improve fluid flow. They are perforated plates with holes or orifices that are placed inside the shell. These orifices create turbulence and increase the velocity of the shell side fluid, promoting better heat transfer.
Pressure Drop and Tube Pitch:
The pressure drop on the shell side of a heat exchanger depends on various factors, including the tube pitch. Tube pitch refers to the distance between the centerlines of adjacent tubes in the heat exchanger. A smaller tube pitch leads to a higher pressure drop due to increased fluid friction.
Horizontal Tube Evaporator:
In a horizontal tube evaporator, the tubes are oriented horizontally, and the fluid to be evaporated flows inside the tubes. The heat transfer in this type of evaporator occurs primarily through convection. To ensure efficient heat transfer, surface blanketing by air is avoided. Surface blanketing refers to the formation of a layer of stagnant air on the tube surface, which inhibits heat transfer. By avoiding surface blanketing, the heat transfer coefficient is improved, and the evaporator operates more efficiently.
Floating Heads in Heat Exchangers:
Floating heads are used in shell and tube heat exchangers to allow for differential thermal expansion between the shell side and tube side. There are different types of floating heads, including split ring type and pull through type. These floating heads ensure that the tubes can expand and contract freely without exerting excessive stress on the tube sheet or tube joints.
Conclusion:
The wrong statement is option 'A' because orifice baffles are commonly used in a shell and tube heat exchanger to enhance heat transfer and fluid flow.
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Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. Can you explain this answer?
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Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. 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 Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. 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 Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. Can you explain this answer?.
Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. 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 Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. 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 Pick out the wrong statement.a)Orifice baffles are never used in a shell and tube heat exchanger.b)Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.c)In a horizontal tube evaporator, surface blanketing by air is avoided.d)Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.Correct answer is option 'A'. Can you explain this answer?.
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