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This quiz contains multiple-choice problems on the design, construction and operations of surface heat exchangers, fin efficiency and heat transfer coefficients.
When classified based on flow pattern, what are the three parts of extended surface heat exchangers?
Compound flow, plate fin and cross-counter flow
Compound flow, tube fin and cross-counter flow
Compound flow, tube fin and and plate fin
Compound flow, cross-parallel and cross-counter flow
Compound flow extended surface heat exchangers are superior to counter flow operation. True or false?
True
False
In the case of classification based on construction, extended surface heat exchangers are classified into
Plate fin and tube fin
Cross-parallel and plate fin
Tube fin and cross-parallel
Compound flow and tube fin
Compound flow fins extended surface heat exchangers are classified based on
Construction
Flow pattern
Phase pattern
Heat transfer mechanism
The plate-type extended fins heat exchanger is classified based on the heat exchanger’s
Construction
Flow pattern
Phase pattern
Heat transfer mechanism
Fins primarily increase the
Turbulence
Heat transfer area
Heat transfer rate
Heat transfer coefficient
Which of the following are not affected by adding fins?
Net heat transfer
Heat transfer coefficient
Heat transfer rate
Turbulence
Fins can be added only to one side of a heat exchanger. True or false?
True
False
Fins are not usually attached to the main body of the heat exchanger by
Welding
Glue
Brazing
Groove fitting
The equivalent diameter on the shell side __ on adding fins.
Increases
Decreases
Remains the same
Very large change beyond measure
The wetted perimeter __ on adding fins; hence, the flow area __
increases, decreases
decreases, increases
increases, increases
decreases, decreases
Which of the following parts are fins usually not attached?
Baffles
Outer tube
Shell
Inner surface of tube
The fanning friction factor __ on adding fins.
Increases
Decreases
Remains the same
Very large change beyond measure
To which side should we add fins?
The gas side
The liquid side
The solid side
Any side possible
Extended surface heat exchangers are a subset of the broader category of __ flow type heat exchangers.
Multi-pass
Single-pass
Compound
Split
