Unit 4 PowerPoint 4 and 5

What are the three methods by which heat can be transferred?

• Conduction

• Feel

• Convection

• Touch

• Radiation

A heat exchanger within a cylinder uses what type of heat transfer?

• Radiation

• Conduction

• Convection

Which two materials are good conductors of heat?

• Copper

• Still air

• Polystyrene

• Aluminium

What heat transfer take place in a fluid or gas?

• Convection

• Radiation

• Conduction

What type of heat is transfer via infrared light?

• Conduction

• Convection

• Radiation

What should be done with pipes to either stop condensation or retain heat?

• Use the correct fittings

• Only use copper pipe

• Put insulation over pipes

• Only use plastic pipe

Part L of the building regulations recommends what should be used to control heat?

• Time clock

• Room stat

• Large radiators

• TRV

Part L of the building regulations recommends what should be used to control heat?

• Boiler stat

• Large cylinder

• Cylinder stat

• Pressurised system

• Motorised valve

Which three below make up the fire triangle?

• Fuel

• CO2

• Oxygen

• Heat

• Wind

What are the three most common gases found in plumbing?

• Green gas

• Natural Gas

• Propane gas

• Heavy gas

• Butane gas