Unit 3: Energy Conservation - Domestic Energy
Teacher recommended
?- Created by: rosieevie
- Created on: 10-01-15 23:05
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- Domestic Energy Conservation
- Factors affecting the rate of heat loss
- Temperature gradient - temperature difference between inside and outside
- Thermal conductivity
- Loss of warm air
- Chilling effect caused by wind and rain
- Space Heating
- Adding insulating materials prevents heat lost by conduction
- Each extra layer saves less energy than previous
- Ventilation prevents condensation and provides fresh air
- Excessive ventilation causes excess warm air loss
- Draught-proofing and close fitting doors
- Heat exchanger ventilates house without losing heat
- Adding insulating materials prevents heat lost by conduction
- Double/Triple Glazing
- Trapping air between sheets of glass - reduces convectional air movement
- Gap too large = increase heat loss (convection current)
- Water Heating
- Only heat water when needed
- Well-insulated tanks
- Reducing volume of water needed
- Low Energy Appliances
- Compact fluorescent lightbulbs
- Thicker insulation on appliances
- Automatic lights turn off at higher light levels
- Reduced Wastage
- Turning lights off
- Turning thermostats down
- Not heating empty rooms
- Turning appliances off (not standby)
- Only heat water when needed
- Factors affecting the rate of heat loss
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