L4 Heat & Air - Thermal performance of buildings Flashcards

Fabric loss - Ventilation loss - Heat loss - Heat gains

1
Q

Describle Conduction

A

Conduction is the direct transfer of heat through material - Conductance is the amount of heat that passes through 1sqm of material 1m thick for 1k temperature difference between inside and outside.

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2
Q

Describe Radiation

A

Radiation is the transfer of heat from one surface across a space - The rate of transfer depends on the nature of surfaces eg. absorption and reflectance.

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3
Q

Describe Convection

A

Convection is the transfer of heat through air movement - The change of density causes convection currents which can transfer heat to or from surfaces

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