Buscar
Estás en modo de exploración. debe iniciar sesión para usar MEMORY

   Inicia sesión para empezar

level: Reducing Unwanted Energy Transfers

Questions and Answers List

level questions: Reducing Unwanted Energy Transfers

QuestionAnswer
How can Energy in the Home be Transferred Usefully and Wasted?-Usefully: Radiators [Things that give out Heat] -Wasted: Windows [Things that Lose the Heat]
How can Homes be Better Designed to Lose Energy? [1]1. Loft Insulation Fibreglass wool be Laid on the Loft Floor and Ceiling = Less Energy leaving the House via Conduction and Convection 2. Hot Water Tank Jacket: Simply reduces Conduction [Water is Hot] 3. Double Glazing: 2 Layers of Glass, with an Air Gap reduces Conduction 4. Thick Curtains: Reduces Heat Loss by Convection and Conduction through the Windows 5. Draught-Proofing: Simply strips of Foam and Plastic around the Door and Windows that stops the Hot Air from going Out.
How can Homes be Better Designed to Lose Energy [2] ?6. Cavity Walls and Cavity Wall Insulation: Two layers of Bricks + a Gap reduces Conduction, but not really Convection in the Gap, so Squirting the Insulating Foam in the Gaps can Trap Pockets Air
How can the Energy be Reduced, from Hot Water Pipes?-Covering the Pipes with the Insulation reducing Conduction and Convection -Painting them White, reduces Radiation -Making them as Short as Possible so that the Water doesn't spend a lot of Time in the Pipes -Making them as Wide as Possible, meaning it has a Smaller Surface Area to Volume Ratio. [Less Volume of Water is next to the Pipe --> Less Conduction]
How can the Thermal Conductivity Factor in making the Building most Efficient? What about Thickness?-If a Material has a High Thermal Conductivity, then that means it will have a High Rate of Transfer of Heat. -If a Material is very Thick then the Rate of Transfer is Lowered down
How and Why is Reducing Friction important?-Friction in a System that lead to Energy Loss, via Heating -This can be Reduced using Lubrication, or changing the Shape of an Object