Making use of energy
- Created by: ScottieMorag
- Created on: 26-11-20 16:13
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- Making use of energy
- Conduction
- The transfer of heat energy through the vibrations of particles in a solid
- The hotter molecules collide with cooler particles transferring kinetic energy
- Metals are good conductors because they have free electrons
- The hotter molecules collide with cooler particles transferring kinetic energy
- Home insulation
- Foam in wall cavities stops conduction
- Carpets trap air to stop conduction
- Double glazing creates an air gap between windows to stop conduction
- Layer of roof insulation to stop conduction
- Use insulating materials containing trapped air
- The transfer of heat energy through the vibrations of particles in a solid
- Convection
- The transfer of heat energy through convection currents in a fluid
- Particles speed up gaining kinetic energy. Fluid expands and volume increases.
- Density = mass / volume
- Density decreases so fluid falls
- Particles speed up gaining kinetic energy. Fluid expands and volume increases.
- Home insulation
- Take away the particles
- Reducing loft space reduces convection
- Using foam in the cavity stops convection from happening in between bricks
- Using draught excluders reduces convection
- Blocking unused chimneys reduces convection
- The transfer of heat energy through convection currents in a fluid
- Radiation
- The transfer of energy without the transfer of matter.
- Shiny objects reflect thermal radiation
- Matte black objects absorb/emit thermal radiation
- Any hot or warm object will emit radiation in the form of infrared electromagnetic radiation
- Matte black objects absorb/emit thermal radiation
- Shiny objects reflect thermal radiation
- Home insulation
- Silver layer beneath under floor heating to reduce radiation
- Silver covered blocks in wall cavities to reduce radiation
- Silver foil at the back of radiator to reduce radiation
- Interior walls painted white to reflect radiation
- The transfer of energy without the transfer of matter.
- Conduction
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