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Test on Heat Exchanger

Total questions: 25

Worksheet time: 58mins

Name
Class
Date
1.

Define heat exchanger

4 lines
2.

Define temperature.

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3.

Define heat.

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4.

Define sensible heat.

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5.

Define latent heat.

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6.

Purpose of heat transfer is to ______________.

  1. a) To heat cooler fluid by means of hotter fluid. 

  1. b) To reduce the temperature of hot fluid by means of cooler fluid. 

  1. c) To boil a liquid by means of hotter fluid. 

  1. d) To condense gaseous fluid by means of a cooler fluid. 

a)

Only b is correct

b)

a & b

c)

Only a is correct

d)

all of the above

e)

b & c

7.

What are the three ways in which heat can be transferred?

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8.

Draw evaporation curve at atmospheric pressure and show sensible heat and latent heat.

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9.

Name two types of fluid flow.

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10.

Some examples of heat exchanger are.

  1. Condenser and evaporator. 

  1. Automobile radiators. 

  1. Airconditioning unit.  

  1. HRSG in power plant. 

a)

All the above are correct.

b)

Condenser and evaporator.

c)

Airconditioning unit.

d)

Automobile radiators.

e)

HRSG in power plant.

11.

Give for examples of heat exchangers used in power plant.

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12.

Which type of flow arrangement is this?

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13.

In general practice usually in shell and tube heat exchanger __________ fluid kept inside tubes.

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14.

Which of the following statement is true.

a)

In double pipe heat exchangers one pipe fixed concentrically inside large pip.

b)

In counter flow heat exchangers fluid stream both hot and cold travel Initially in the opposite direction then same direction

c)

Parallel flow heat exchangers both hot and cold fluid enters and leave in opposite direction.

d)

In parallel flow heat exchangers fluid stream both hot and cold travel

e)

In counter flow heat exchangers both hot and cold fluids flow in same direction.

15.

What is the difference between co-current and counter current operation of a heat exchanger?

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16.

What are the advantages of plate type heat exchangers?

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17.

What are the disadvantages of plate type heat exchangers?

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18.

The heat transfer in the heat exchanger includes both convection and conduction.

a)

True

b)

False

19.

Identify the Type heat exchanger.

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20.

Identify the type of heat exchanger.

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21.

Identify the type of flow heat exchanger in below picture.

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22.

Identify the type of flow heat exchanger in below picture.

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23.

In a shell and tube heat exchanger, the shell side fluid flows around the tubes, while the tube side fluid flows through the tubes.

a)

False

b)

True

24.

Which of the following statements about heat exchangers is correct?

a)

In a counter flow heat exchanger, the hot and cold fluids flow in the same direction.

b)

In a parallel flow heat exchanger, the temperature difference between the fluids remains constant.

c)

Heat exchangers are only used in industrial applications.

d)

In a shell and tube heat exchanger, the heat transfer area is primarily determined by the number of tubes.

e)

Heat exchangers can only transfer heat between liquids.

25.

The efficiency of a heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer.

a)

True

b)

False