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fotp chevron > Heat Exchangers > Flashcards

Heat Exchangers Flashcards

1
Q

_____ is a piece of equipment used to transfer heat from one fluid to another between two flowing fluid streams of different temperature during refinery operations.

a. Furnace
b. Heat Exchanger
c. Condenser
d. Hot Water Heater

A

b. Heat Exchanger

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2
Q

_____ is the transfer of heat within or through a solid.

a. Conduction
b. Convection
c. Radiation
d. Advection

A

a. Conduction

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3
Q

______ is the transfer that occurs due to the movement of fluids created by
differences in temperature.

a. Conduction
b. Convection
c. Radiation
d. Advection

A

b. Convection

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4
Q

What is the transfer of heat through space by heat waves that travel along a
straight path.

a. Conduction
b. Convection
c. Radiation
d. Advection

A

c. Radiation

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5
Q

One of the fluids travels through the tubes while the other fluid
travels between the tubes and the outer shell. Heat is
transferred through the metal surfaces of the tubes from one
fluid to the other.

What type of exchanger is being described?

a. Double-pipe (G-Fin)
b. Plate-and-frame
c. Shell-and-tube
d. U-tube bundle
e. Fixed-tube sheet

A

c. Shell-and-tube

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6
Q

What type of exchanger is being described?

Consists of thin metal plates sandwiched between open
frames. Each thin plate is exposed to both fluids, so heat
transfer between the fluids occurs through the plates.

a. Double-pipe (G-Fin)
b. Plate-and-frame
c. Shell-and-tube
d. U-tube bundle
e. Fixed-tube sheet

A

b. Plate-and-frame

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7
Q

What type of exchanger is being described?

Consists of a tube-within-a-tube design. The single unit
consists of two straight pipes connected by a return bend.
They are generally piped for counter flow and the inner pipes
have fins running lengthwise to increase the heat transfer
surface.

a. Double-pipe (G-Fin)
b. Plate-and-frame
c. Shell-and-tube
d. U-tube bundle
e. Fixed-tube sheet

A

a. Double-pipe (G-Fin)

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8
Q

Consists of a small channel head, bolting rings to secure the
head in place, and an enlarged bell head on the shell to
enclose the floating-head assembly. A tube sheet is used at
both ends to secure the tubes.

What type of exchanger is being described?

a. Double-pipe (G-Fin)
b. Floating-Head
c. Shell-and-tube
d. U-tube bundle
e. Fixed-tube sheet

A

b. Floating-Head

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9
Q

_____ forms the main body of the heat exchanger and holds the fluid that
flows outside the tube bundle. Supports the entire heat exchanger
assembly and is mounted on its foundation.

a. Tube bundle
b. Tube sheet
c. Head
d. Baffle
e. Piping nozzle
f. Shell

A

f. Shell

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10
Q

______ facilitates the flow of shell-side fluid and are of different types based
on the pattern of fluid flow they enable.

a. Tube bundle
b. Tube sheet
c. Head
d. Baffle
e. Piping nozzle
f. Shell

A

d. Baffle

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11
Q

_______ is an important component of the shell-and-tube heat exchanger that direct and increase the velocity of the flow of the shell-side flow.

a. Tube bundle
b. Tube sheet
c. Head
d. Baffle
e. Piping nozzle
f. Shell

A

d. Baffle

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12
Q

What type of baffle enables single-pass flow of the shell-side fluid?

a. Orifice
b. Longitudinal
c. Segmental

A

c. Segmental

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13
Q

Short cylinders with one or more partitions running through the middle. Nozzles are welded to the channel heads and act as flow inlets and
flow outlets.

What exchanger head is being described?

a. Flat Head
b. Channel Head
c. Bell Head
d. Floating Head

A

b. Channel Head

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14
Q

Bolted to the inside tube sheets, thereby facilitating the entire
assembly to move within the shell as the tube bundles expand and
contract

What exchanger head is being described?

a. Flat Head
b. Channel Head
c. Bell Head
d. Floating Head

A

d. Floating Head

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15
Q

________valves are connected to devices that send a signal to the
control valve to open or close just enough to help maintain a stable
temperature in the heat exchanger.

a. drain valves
b. flow control
c. relief valves
d. vents and vent valves

A

b. flow control

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16
Q

These valves prevent the formation of gas pockets in a heat
exchanger. The presence of gas pockets prevents fluids from coming
into contact with some of the tubes, resulting in reduction of heat
transfer.

a. drain valves
b. flow control
c. relief valves
d. vents and vent valves

A

d. vents and vent valves

17
Q

Flow pattern where two fluids travel in the same direction.

a. Parallel flow
b. Counter flow
c. Cross flow

A

a. Parallel flow

18
Q

Flow pattern Where two fluids flow past each other.
a. Parallel flow
b. Counter flow
c. Cross flow

A

b. Counter flow

19
Q

Flow pattern Where two fluids flow perpendicular to each other.

a. Parallel flow
b. Counter flow
c. Cross flow

A

c. Cross flow

20
Q

(True or False)
Exchangers used in fired heaters are commonly back flushed.

A

False Exchangers used in cooling water service are commonly back flushed.

21
Q

____ are used to cool vapors and convert them into liquids. It converts
steam into water, which can then be used within a system.

a. Condensers
b. Cooling towers
c. Fin-fans, air coolers

A

a. Condensers

22
Q

_______ are specialized heat exchangers used to cool water, using air. The water is
primarily cooled through evaporation.

a. Condensers
b. Cooling towers
c. Fin-fans, air coolers

A

b. Cooling towers

23
Q

____ are used to cool or condense low-viscosity fluids. The cooling medium is a
stream of air created by large fans.

a. Condensers
b. Cooling towers
c. Fin-fan, air coolers

A

c. Fin-fan, air coolers

24
Q

A type of shell-and-tube heat exchanger that is used to heat and vaporize
liquids. Two common kinds are kettle-type and
thermosiphon.

a. Reboiler
b. Fired Heater
c. Vaporizer
d. Steam Generators

A

a. Reboiler

25
Q

Also called a furnace, is an insulated, enclosed structure that is used to
heat process fluids such as crude oil or other raw materials. Also produces heat by the combustion of fuel.

a. Reboiler
b. Fired Heater
c. Vaporizer
d. Steam Generators

A

b. Fired Heater

26
Q

A type of heating equipment where the liquid process material is______ by a heating medium such as flue gas or any hot fluid.

a. Reboiler
b. Fired Heater
c. Vaporizer
d. Steam Generators

A

c. Vaporizer

27
Q

_____ generates steam for use in the plant by using the available high-level heat
of any hot fluid or flue gases.

a. Reboiler
b. Fired Heater
c. Vaporizer
d. Steam Generators

A

d. Steam Generators

28
Q

Another example of the use of condensers is the cooling of vapors of products. The
product vapor produced in a distillation column flows into a condenser, where it is
converted into a liquid, or distillate.

A
29
Q

The condensed liquid or the distillate drips off the tubes, accumulates at the bottom of the
shell, and then flows through the distillate outlet to the receiver.

A
30
Q

True or False
Cooling water to the condenser can be isolated only after ensuring that the
vapor flow to the condenser has been stopped.

A

True

31
Q

Reboilers are the external heat source for the distillation column operation. This heat
drives the vapor traffic from the bottom of the column to the top.

A
32
Q

The purpose of condensers is to convert a vapor into a liquid by lowering the
temperature to its dew point.

A

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