[L9]_Distributed Generation, Heat Engines & Heat Pump Systems

Question 1

ENGY-775

What is the first law of thermodynamics in relation to heat engines?

A) Heat flows from cold to hot
B) Energy cannot be created or destroyed
C) Efficiency is always 100%
D) Work output always exceeds heat input

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Answer 1

B) Energy cannot be created or destroyed

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Question 2

ENGY-775

True or False: The Stirling cycle is an internal combustion cycle.

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Answer 2

False

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Question 3

ENGY-775

Fill in the blank: The ________ cycle is commonly used in steam power plants to convert heat into work.

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Answer 3

Rankine

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Question 4

ENGY-775

What limits the efficiency of a heat engine according to the second law of thermodynamics?

A) Temperature differences between heat reservoirs
B) Conservation of energy
C) Lack of fuel
D) Internal friction

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Answer 4

A) Temperature differences between heat reservoirs

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Question 5

ENGY-775

True or False: A heat pump moves heat from a lower temperature area to a higher temperature area.

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Answer 5

True

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Question 6

ENGY-775

Which component in a heat pump is responsible for compressing the refrigerant?

A) Evaporator
B) Expansion valve
C) Compressor
D) Condenser

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Answer 6

C) Compressor

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Question 7

ENGY-775

Fill in the blank: Ammonia has a ________ Direct Global Warming Potential (DGWP).

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Answer 7

0

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Question 8

ENGY-775

What type of heat pump system uses variable refrigerant flow (VRF)?

A) Gas-fired heat pump
B) Multi-split heat pump
C) Standard split heat pump
D) Domestic hot water heat pump

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Answer 8

B) Multi-split heat pump

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Question 9

ENGY-775

What is the main advantage of cogeneration (CHP) systems over traditional power generation?

A) 100% efficiency
B) Requires no fuel
C) Reduces greenhouse gas emissions to zero
D) Utilizes waste heat for useful purposes

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Answer 9

D) Utilizes waste heat for useful purposes

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Question 10

ENGY-775

True or False: Tri-generation systems produce electricity, heat, and cooling.

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Answer 10

True

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Question 11

ENGY-775

Fill in the blank: Liquefied natural gas (LNG) is created by cooling natural gas to ________ degrees Celsius.

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Answer 11

-162

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Question 12

ENGY-775

What energy delivery type is used the least in the UK as of 2010?

A) Solid fuels
B) Liquid fuels
C) Heat
D) Electricity

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Answer 12

C) Heat

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Question 13

ENGY-775

Which of the following is not considered a solid fuel?

A) Coal
B) Biomass
C) Propane
D) Coke

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Answer 13

C) Propane

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Question 14

ENGY-775

True or False: Centralized boilers are used for heat energy distribution.

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Answer 14

True

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Question 15

ENGY-775

Fill in the blank: Energy produced for ________ is required for transportation and is primarily derived from oil.

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Answer 15

motive power

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Question 16

ENGY-775

What type of gas is removed during the liquefaction process of natural gas to reduce pollutants?

A) Methane
B) Carbon dioxide
C) Hydrogen
D) Sulfur

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Answer 16

D) Sulfur

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Question 17

ENGY-775

True or False: Carbon capture and storage systems (CCSS) can capture up to 90% of CO2 emissions from fossil fuel combustion.

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Answer 17

True

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Question 18

ENGY-775

Fill in the blank: A ________ price is a tax penalty placed on CO2 emissions to reduce greenhouse gas output.

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Answer 18

Carbon

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Question 19

ENGY-775

What is one key advantage of smart grids?

A) They eliminate energy losses completely.
B) They integrate renewable energy efficiently.
C) They only use fossil fuels.
D) They are cheaper than traditional grids.

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Answer 19

B) They integrate renewable energy efficiently.

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Question 20

ENGY-775

True or False: Acid rain is caused by sulfur dioxide and nitrogen oxides released during fossil fuel combustion.

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Answer 20

True

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