22932050
Descrição
Mapa Mental por Rhianna Sangha, atualizado more than 1 year ago
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Criado por Rhianna Sangha
quase 4 anos atrás
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Conservation of Energy and
Energy Transfers
- Dissipate: Ways in
which energy is
being wasted
- Energy Transfers
- In a system,
energy
transforms from
one form to the
other
- In a closed
system, there is
no change in net
in total energy
- Sometimes the
transfer is not useful,
it is wasted
- Dissipation is one
time of transfer
- In a system,
energy
transforms from
one form to the
other
- Example
- A kettle boiling water.
The kettle is supplied
with electrical energy
which is transferred to
thermal energy in the
water.
- A kettle boiling water.
The kettle is supplied
with electrical energy
which is transferred to
thermal energy in the
water.
- Reducing Energy Dissipation
- Double glazed windows trap
air in the house
- Loft insulation reduces heat loss
- Carpets reduce heat loss
- Double glazed windows trap
air in the house
- Thermal Conductivity
- This is the amount of
energy transferred
through a material
- Brick and Glass have a
low thermal energy
- High thermal conductivity
means high energy transfer
- This is the amount of
energy transferred
through a material
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