Combined Heat and Power System

Question 1

Also known as combined heat and power

Answer 1

Cogeneration System

Question 2

____________ is the use of a heat engine (or other means) to simultaneously generate both _______ and ________

Answer 2

Cogeneration system, electricity, heat

Question 3

Its principal purpose is to produce electricity but, as a by-product, the _________ produced is used for heater water, space heating, or industrial process heating

Answer 3

Cogeneration system, heat produced

Question 4

_____________ is most efficient when the heat can be used _____ or very close to it because overall efficiency is reduced when the heat must be transported through costly insulated pipes

Answer 4

Cogenerations systems, onsite

Question 5

________________________ are generall classified by the prime mover, generator, and fuel used

Answer 5

Cogeneration units

Question 6

used to drive generators

Answer 6

prime mover

Question 7

Internal Combbustion __________ engine are most common and efficient prime mover used commerical cogeneration systems

Answer 7

reciprocating

Question 8

________________ reciprocating engine are based on the spark ignition or the compression ignition

Answer 8

Internal Combustion

Question 9

________________ engine involves only the compression of air in the cylinder towards the end of the compression stroke

Answer 9

Combustion-ignition

Question 10

Compression-ignition engine run on _______ ____ or heavy oil; as result they are primarily used for large-scale cogeneration

Answer 10

diesel fuel

Question 11

The spontaneous ignition is thus caused by the high _______ of the compressed __________-

Answer 11

temperature, mixture

Question 12

The Mixture of air and fuel is compressed in each cylinder before ignition is caused by an externally supplied spark

Answer 12

Spark-Ignition Engine

Question 13

These engine are mainly four-stroke direct injection engine fitted with a turbochanger and intercooler.

Answer 13

Spark-Ignition engine

Question 14

They run on gasoline, natural gas, or liqiud propane gas (LPG)

Answer 14

Spark-Ignition engine

Question 15

_____________ is accomplished by moving the gas back and forth between hot and cold heat exchangers, often with a regenerator between the heater and cooler

Answer 15

Piston movement

Question 16

______________ is an electrochemical conversion device that directly converts a fuel into electrical energy

Answer 16

Fuel Cell Cogeneration

Question 17

a hydrogen-oxygen fuel cell consumes hydrogen and oxygen and produces ____ as principal by-product

Answer 17

Water