9074/303 pp 9 Quiz on Burners and Draughts

Burner

Boiler

Cooker

Water heater

Fire

Refrigerator

Air conditioner

Washing machine

To draw in air for combustion

To release exhaust gases

To supply water

To provide electricity

Metal

Plastic

Wood

Glass

It has primary air mixed with the gas prior to combustion.

It produces a blue flame.

It has no primary air mixed with the gas prior to combustion.

It is more efficient than pre-aerated flames.

Flame lift

Light back

Flame spread

Flame extinguish

Increases flame speed

Decreases flame speed

Stabilizes the flame

Causes turbulence

To extinguish the flame

To stabilize the flame

To initiate combustion

To cool the gas

A) To increase gas flow

B) To prevent 'flame lift'

C) To reduce air pressure

D) To enhance heat output

A) The flame will extinguish

B) The flame will lift off

C) The flame will become brighter

D) The flame will reduce in size