404310
Descrição
Mapa Mental por saadiecook, atualizado more than 1 year ago
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Criado por saadiecook
mais de 10 anos atrás
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P1 Keeping homes warm
- Practical insulation
- Double glazing reduces energy loss.
the gap between the two pieces of
glass is filled with a gas or contains
a vacuum
- Lost insulation reduces
energy loss by conduction
and convection; warm air in
the home rises,energy is
transferred through the ceiling
by conduction
- Cavity wall insulation reduces energy
loss by conduction and convection the
air in the foam is a good insulator and
the air cannot move by convection
because it is trapped in the foam
- Double glazing reduces energy loss.
the gap between the two pieces of
glass is filled with a gas or contains
a vacuum
- Energy efficiency
- Efficiency = useful energy output(x 100%) DIVIDED by
total energy input
- Energy transformations can be shown by sankey diagrams
- Energy from the source(home) is lost to the
sink(environment)
- Different types of insulation cost
different amounts and save
different amounts of energy
- Payback time = cost of insulation DIVIDED by
annual saving
- Efficiency = useful energy output(x 100%) DIVIDED by
total energy input
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