Technical standards before the resolutions of the 2000s
The French government has implemented the thermal regulation in 1974 following the oil shock of the previous year. This process was adopted to reduce the bill on energy consumption in the short term because of soaring oil prices. However, this was only an emergency measure, it was necessary to adapt it for a long-term application is possible and for maximum efficiency. The first legislation of 1974 focused on the factors of heat loss of new constructionIt aimed to reduce by 25% energy consumption compared to the standards set in the 1950s. To this end, he insists on the insulators of the living space from the outside world as the walls and roof but also the renewal of the air. And to have a clear idea, it has established a factor, the heat transfer coefficient K.
In all, the thermal regulation had three revisions after its adoption in 1974 before the year 2000. The first revision was made in the year 1977 during which the calculation of heat transfer coefficient K has been refined. The other two were held in 1982 and 1988, and since the last year that the heating equipment were also taken into account and were the subject of legislation.
The purpose of this regulation
The regulations aim to reduce thermal energy consumption of each household by highlighting the improvements available. In addition to the coefficient K, there was also the coefficient G which reported the loss of heat-related air change. This parameter is expressed in watts per cubic meter for a variation of a degree Kelvin, taking into account the internal and external temperature of the house. The cause of the adoption of this measure was the first oil shock and in the second, this was an increase favor increased energy economy. For each renewal it revolves around a 20% improvement.
In 2000, a new regulation was developed to be implemented in 2001. The innovation is that it is no longer the new individual buildings that are affected by the law but also the existing buildings and residences tertiary. The standard today is under the RT 2005 but will be replaced in early 2013 by the RT 2012 in preparationThe latter was established at the Grenelle Environment Forum was planned for 2010 but was delayedHowever, it is already implemented in respect of tertiary structures and those built in areas ANRU. |
