14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

Réglementation Thermique 20002000 “Thermal Regulation”

The New French RT 2000

14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

Introduction

• June2, 2001

• -20% to - 40%, with summer comfort

• Performance-based approach

• Three requirements– Energy consumption < Reference– Summer temperature– Minimal performance of some components

14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

Challenges

• Environmental– 1/4 of gas emissions– More and more severe every 5 years– To optimise products for retrofitting

• Social: cost mastering

• Economics : European standards

14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

Tools

• Calculation softwares: ThC, ThE– “free” softwares– air conditioning: models to come by 2 years

• Technical solutions

14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

Expected Changes

• Flexibility and optimistaion, but “garde-fous” such as minimum insulation

• Tertiary: tremoundous evolutions of technical solutions

• Thermal bridges: technical solutions to be proposed

• Air tightness: objective: strict application of execution rules

14-05-01 - ENERBUILD Steering Committe BOURDEAU Luc (CSTB)

• Low emissivity glazings … argon

• Energy sources flexibility: flue tubes in electric houses

• Roof and wall higher insulation

• Hygro-variable ventilation in electric houses

• No “permanent flame” in gas boilers

• Lower thermal bridges in collective buildings

Expected Changes