9. Glossary

Heat flow in W

Quantity of heat transmitted by a system, divided by time

Intermediate floor

Connections inside the perimeter of a given floor

Linear transmittance Ψ

Coefficient expressing losses due to a linear thermal bridge (in W per K and per linear meter)

Point transmission coefficient χ

Coefficient expressing heat loss due to a point thermal bridge (in W per K)

Interior insulation ITI

Insulation with an insulating layer applied to the inside of a vertical envelope wall

External insulation ITE

Insulation with an insulating layer applied to the outside of a vertical envelope wall