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Many types of heat exchangers have been developed to meet the widely varying applications. Based upon their
(i) Operating principle
(ii) Arrangement of flow path
(iii) Design
Identify the correct statements
(i) Operating principle
(ii) Arrangement of flow path
(iii) Design
Identify the correct statements
- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Many types of heat exchangers have been developed to meet the widely v...
Heat exchanger is a process equipment designed for the effective transfer of heat energy between two fluids.
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Many types of heat exchangers have been developed to meet the widely v...
Introduction:
Heat exchangers are devices used for transferring heat from one medium to another. They are widely used in various industries and applications. Heat exchangers can be classified based on their operating principle, arrangement of flow path, and design.
Operating Principle:
The operating principle of a heat exchanger refers to how heat is transferred between the two mediums. There are three main types of heat exchangers based on operating principle:
1. Direct Contact Heat Exchangers: In these heat exchangers, the two fluids come into direct contact with each other. Heat transfer occurs by mixing the two fluids, resulting in a temperature change.
2. Indirect Heat Exchangers: In these heat exchangers, the two fluids do not come into direct contact with each other. Heat transfer occurs through a separating wall, such as a metal or ceramic surface.
3. Regenerative Heat Exchangers: These heat exchangers use a solid matrix or a rotating wheel to store and release heat between the two fluids. The matrix or wheel alternately absorbs heat from one fluid and releases it to the other.
Arrangement of Flow Path:
The arrangement of flow path in a heat exchanger refers to how the two fluids flow within the exchanger. There are two main types of flow path arrangements:
1. Parallel Flow: In parallel flow heat exchangers, the two fluids flow in the same direction, entering and exiting the exchanger at the same ends. This arrangement allows for efficient heat transfer but may result in a lower temperature difference between the two fluids.
2. Counterflow: In counterflow heat exchangers, the two fluids flow in opposite directions, entering and exiting the exchanger at opposite ends. This arrangement allows for a higher temperature difference between the two fluids, resulting in more efficient heat transfer.
Design:
The design of a heat exchanger refers to its physical characteristics and construction. There are various design considerations, such as tube and shell configuration, finned tubes, plate and frame design, etc. The design of a heat exchanger is determined based on factors like the required heat transfer rate, pressure drop, space constraints, and material compatibility.
Correct Statements:
Based on the operating principle, arrangement of flow path, and design of heat exchangers, the correct statements are:
1. Heat exchangers can be classified based on their operating principle, arrangement of flow path, and design.
2. Direct contact, indirect, and regenerative heat exchangers are classified based on their operating principle.
3. Parallel flow and counterflow arrangements are based on the arrangement of flow path.
4. The design of a heat exchanger is determined based on factors like heat transfer rate, pressure drop, space constraints, and material compatibility.
Therefore, the correct answer is option A: 1, 2, and 3.
Heat exchangers are devices used for transferring heat from one medium to another. They are widely used in various industries and applications. Heat exchangers can be classified based on their operating principle, arrangement of flow path, and design.
Operating Principle:
The operating principle of a heat exchanger refers to how heat is transferred between the two mediums. There are three main types of heat exchangers based on operating principle:
1. Direct Contact Heat Exchangers: In these heat exchangers, the two fluids come into direct contact with each other. Heat transfer occurs by mixing the two fluids, resulting in a temperature change.
2. Indirect Heat Exchangers: In these heat exchangers, the two fluids do not come into direct contact with each other. Heat transfer occurs through a separating wall, such as a metal or ceramic surface.
3. Regenerative Heat Exchangers: These heat exchangers use a solid matrix or a rotating wheel to store and release heat between the two fluids. The matrix or wheel alternately absorbs heat from one fluid and releases it to the other.
Arrangement of Flow Path:
The arrangement of flow path in a heat exchanger refers to how the two fluids flow within the exchanger. There are two main types of flow path arrangements:
1. Parallel Flow: In parallel flow heat exchangers, the two fluids flow in the same direction, entering and exiting the exchanger at the same ends. This arrangement allows for efficient heat transfer but may result in a lower temperature difference between the two fluids.
2. Counterflow: In counterflow heat exchangers, the two fluids flow in opposite directions, entering and exiting the exchanger at opposite ends. This arrangement allows for a higher temperature difference between the two fluids, resulting in more efficient heat transfer.
Design:
The design of a heat exchanger refers to its physical characteristics and construction. There are various design considerations, such as tube and shell configuration, finned tubes, plate and frame design, etc. The design of a heat exchanger is determined based on factors like the required heat transfer rate, pressure drop, space constraints, and material compatibility.
Correct Statements:
Based on the operating principle, arrangement of flow path, and design of heat exchangers, the correct statements are:
1. Heat exchangers can be classified based on their operating principle, arrangement of flow path, and design.
2. Direct contact, indirect, and regenerative heat exchangers are classified based on their operating principle.
3. Parallel flow and counterflow arrangements are based on the arrangement of flow path.
4. The design of a heat exchanger is determined based on factors like heat transfer rate, pressure drop, space constraints, and material compatibility.
Therefore, the correct answer is option A: 1, 2, and 3.
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Many types of heat exchangers have been developed to meet the widely varying applications. Based upon their(i) Operating principle(ii) Arrangement of flow path(iii) DesignIdentify the correct statementsa)1, 2 and 3b)1 and 2c)2 and 3d)1 and 3Correct answer is option 'A'. Can you explain this answer?
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