Deck 13: Energy Recovery and Thermodynamics Processes

Question 1

Energy recovery is typically via production of __________

A)gas
B)heat
C)light
D)steam

Answer 1

steam

Question 2

Which of the following industrial process uses waste as a fuel?

A)cement kilns
B)lead manufacturing
C)acid manufacturing
D)sulphur manufacturing

Answer 2

cement kilns

Question 3

What is the combustion temperature range in cement kiln incineration?

A)1300-1600
B)1350-1650
C)1250-1450
D)1235-1600

Answer 3

1350-1650

Question 4

Non-volatile heavy metals in kiln are fixed into __________

A)clinker's crystalline structure
B)fumes
C)solid lump
D)slag

Question 5

Which of the following waste types are not suitable for co-combustion in cement kilns?

A)chlorine
B)hydrogen
C)calcium
D)carbonate

Question 6

. Due to the limits, upper efficiency of steam turbines is fixed to _________

A)10-15%
B)25-45%
C)20-40%
D)35-45%

Question 7

How many sections does waste heat recovery boiler have in steam generators?

A)1
B)2
C)3
D)4

Question 8

Turbines that are run by exhaust gases are called _______

A)power recovery turbines
B)stepped turbines
C)turbo compounded engine
D)none of the mentioned

Question 9

Combination of two or more thermodynamic processes gives _________

A)decrease in efficiency
B)increase in efficiency
C)increases the temperature at exhaust
D)none of the mentioned

Question 10

By using combined cycle steam and gas power plant _________

A)specific fuel consumption can be decreased
B)efficiency increased
C)specific fuel consumption can be decreased and efficiency increased
D)none of the mentioned

Question 11

What are turbo-compound engines?

A)turbines run at exhausts of otto and diesel cycles
B)combination of turbofan and turbojet engines
C)combination of turboprop and turbofan engines
D)none of the mentioned

Question 12

The mercury steam cycle represents how many coupled Rankine cycles?

A)1
B)2
C)3
D)4

Question 13

In the mercury steam cycle, the mercury cycle is called?

A)bottoming cycle
B)middle cycle
C)topping cycle
D)none of the mentioned

Question 14

In the mercury steam cycle, the steam cycle is called?

A)bottoming cycle
B)middle cycle
C)topping cycle
D)none of the mentioned

Question 15

Apart from mercury & steam, which of these is a component of tertiary cycle?

A)nitrogen di-oxide
B)water
C)carbon di-oxide
D)sulphur di-oxide

Question 16

The addition of sulphur dioxide in a tertiary cycle is at?

A)high temperature
B)low temperature
C)too high temperature
D)none of the mentioned

Question 17

Which of these can also be used as a topping fluid?

A)sodium
B)calcium
C)boron
D)titanium

Question 18

Which of these can be used as a fluid in the bottoming fluid?

A)mercury
B)ammonia
C)calcium
D)sodium

Question 19

In case of Sodium-mercury-steam cycle, which is the topping fluid?

A)mercury
B)steam
C)sodium
D)cannot say

Question 20

In case of mercury-steam-sulphur dioxide cycle, which is the bottoming fluid?

A)mercury
B)steam
C)sulphur dioxide
D)cannot say

Question 21

The total loss in a tertiary cycle is?

A)sum of losses in the individual cycles
B)product of losses in the individual cycles
C)sum of products of individual losses
D)none of the mentioned

Question 22

Room air conditioners and packaged units are examples of _________

A)direct expansion systems
B)indirect expansion systems
C)chilled water systems
D)indirect contraction systems

Question 23

The process of extraction of the certain required amount of water from air is known as ___________

A)heating
B)cooling
C)humidification
D)dehumidification

Question 24

The reciprocal of thermal conductivity is known as __________

A)thermal conductance
B)surface resistance
C)specific conductance
D)thermal resistivity

Question 25

Condensers and evaporators together form a ____________

A)heat exchanger
B)refrigeration system
C)thermocouple
D)heating system