energy use in buildings

• Energy use in buildings

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Energy use in buildings

Energy is used for

• Lighting

• Heating

• Cooling

• Appliances

Use of energyPrimary energy

Transformati

onSecondary energyDelivered energyUseful energy

Calorific value

Thermal comfort

Factors in thermal comfortActivit

y Clothin

gRoom temperatureAir

movementHumidity

Factors in thermal comfortActivit

y Clothin

gRoom temperatureAir

movementHumidity

Heat loss

Heat loss

Heat gains

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Changes in the heating and cooling energy use in buildings

energy use in buildings

Technology

heat loss

heat gains

calorific value