03 Scientific Principles

• Name 2 uses of air in Heating Systems?

  1. Warm Air Systems
  2. Expansion vessel pressure charge.
• What does CHP stand for?

  Combined Heat and Power
• Name the two gas laws?

  1. Charles law
  2. Boyles law
• Name the unit of power?

  Joules
• Two Basic types of LPG?

  1. Butane
  2. Propane
• What is sensible heat?

  A rise in heat but not state.
• Three methods of heat transfer?

  1. Conduction
  2. Radiation
  3. Convection
• What is the specific heat capacity of water?

  4.19 KJ
• How to calculate the amount of energy in heat change?

  Litres X Temp Change X SHC
• Difference between static and dynamic pressure?

  1. Static - Water that does not flow.
  2. Dynamic - Water that flows.
• What is the name of the effect describing a higher pressure but lower velocity in a downsized pipe?

  The Bernoulli Effect.