cooling of buildings

• What is the main topic of the video?

  Factors affecting the cooling of a building
• What does a camera that detects thermal energy show?

  Heat loss through walls and windows
• How does thermal conductivity affect energy transfer?

  Higher thermal conductivity means faster energy transfer
• What are the two layers of modern house walls?

  External brick wall and internal Breeze block wall
• What is the purpose of packing the cavity between walls?

  To reduce thermal energy transfer
• How much can insulating material reduce thermal conductivity?

  By up to 10 times
• How do single glazed windows compare to double glazed windows?

  Single glazed windows have higher thermal conductivity
• What is the effect of loft insulation on thermal energy transfer?

  It reduces the rate of thermal energy transfer
• What are two methods to reduce thermal energy transfer in buildings?

  Use low thermal conductivity materials and thick walls
• What are the main factors affecting the cooling of a building?

  • Thermal conductivity of walls
  • Type of windows (single vs. double glazed)
  • Loft insulation
  • Thickness of walls