educational sheet RT2012 + RT2020 + HQE

educational sheet RT2012 + RT2020 + HQE

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  1 EDUCATIONAL SHEET RT 2012and RT 2020 (Responsible Building Regulations) LaRT2012 THERMAL REGULATIONS 2012 (RT 2012) In accordance with the Grenelle Environment Forum, the 2012 Thermal Regulations (RT 2012) aims to limit primary energy consumption in new buildings to a maximum of 50 kWh / m² per year on average. RT 2012 sets primarily a number of regulatory goals and includes 3 performance requirements: the need for bioclimatism , primary energy consumption, comfort in summer. Some means requirements are implemented to reflect the strong desire to make a common practice (eg consumption display). The general scope of the RT 2012: ➢ Focuses on residential and non-residential, new buildings ; ➢ From calculations of heating consumption, domestic hot water (DHW), lighting, cooling and auxiliary heating, cooling or ventilation auxiliaries ; ➢ According to requirements scaled on the previous performance label BBC Effinergie RT2005. PERFORMANCE REQUIREMENTS Energy Efficiency of the building The building minimum energy efficiency requirement is defined by the "Bbiomax" coefficient (bioclimatic housing needs). This requirement sets a simultaneous energy need limitation for all components related to the design of the building (heating, cooling, ventilation and lighting), thus setting the house optimal functioning separately from the energy systems implemented. Building Energy Consumption The requirement for maximum conventional primary energy consumption is defined by the "Cepmax" coefficient on the consumption of heating, cooling, lighting, hot water and auxiliaries (pumps and fans). The value of Cepmax amounts to 50kWh / m².year primary energy, with variations due to geographical location, altitude, type of building use, the average surface of housing. In addition to an optimal functioning of the building expressed by Bbio, this requirement imposes to use high efficiency energy equipment. Summer comfort in non-air conditioned buildings Types of buildings are defined to ensure a good level of summer comfort without having to make use of an active cooling system (air conditioning). For these buildings, regulations require that for a sequence of 5 very hot summer days the warmest temperature reached in the premises does not exceed a threshold, depending on the geographical area. MEANS REQUIREMENTS Ensure quality of implementation Detection of thermal bridges (thermal camera) Thermal bridge Temperature distribution on a thermal bridge
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  2 Airtightness (blower doortest) This test consists in putting the house under high pressure and / or low pressure to measure leakage through a "false door" i.e. a computer- controlled fan. To do this, all vents are closed as well s all doors, windows, etc. Air permeability of new homes is set with this test and monitored by measuring during and / or at the end of works. This defines the building air sealing. Thermal loss must be less than 0.6 m3 / h / m2 (for a house), or less than 1 m3 (collective dwelling) in 1 hour for an area of 1 m2 (excluding low floor), with a relative pressure of +/- 4 Pa Ensure comfortable living Minimum window surface For residential buildings, the surface of windows should be equal to at least 1/6 of the living area Speed up renewable energy development Extending the use of renewable energy systems to individual houses (various financial aids) This can be: - Connection to a heating network supplied/fed for more than 50% by renewable energy - Solar thermal collectors for domestic hot water - Photovoltaic panels for electricity generation, - Wood-burning stove or boiler There are alternative solutions such as thermodynamic water heaters. Ensure proper use of the building Measuring or assessing the energy consumption depending on usage Informing the occupants Ensure overall energy quality Local energy production is not taken into account beyond self- consumption
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  3 RT2020-RBR RT 2020 ORRÉGLEMENTATION BÂTIMENT RESPONSABLE (RBR)( “RESPONSIBLE” BUILDING REGULATIONS) Thermal regulations for 2020, also called "Responsible Building Regulations" (RBR), aims to implement the concept of positive energy building (BEPOS). This is a regulation focusing on targets that leaves design freedom while limiting energy consumption. A positive energy building produces more energy than the energy used for operating it. The difference is “smoothed” over a one-year period. The design of a positive energy dwelling usually embraces the main principles of the passive house (heating energy requirements of less than 15 kWh / m², very high air barrier, total energy consumption of less than 120 kWh / m²), with the addition of energy generation equipment: ventilation with heat recovery, stronger thermal insulation, efficient capture of passive solar energy (bioclimatism),... The différences with RT 2012 Two new energy consumption items ➢ RT 2012 takes into account five distinctive purposes: cooling, heating, domestic hot water (DHW), lighting and auxiliary facilities/equipment (fans, pumps...). ➢ RT 2020 will also consider new uses such as the consumption of household appliances (computers, refrigerators, television, washing machine...). The concept of embodied energy of materials and equipment will also be considered. This is the energy needed throughout the life cycle of a product (manufacture, transport, implementation and end of life phase). Individuals at the heart of RT 2020 With the implementation of RT 2020, individuals and citizens will be educated to consume less energy. In fact, technological developments that reduce the consumption of equipment is not enough to reach the threshold of "zero energy waste" (efficient management of uses, consumption of household appliances and IT, mobility ...). The change in our behavior will allow to comply with RT 2020 by consuming less and more efficiently. Inhabitants’welfare RT 2020 will take greater account of the welfare of the inhabitants: the indoor air quality (IAQ) and sound insulation should be anticipated by using appropriate building materials thus experiencing better management (healthy natural materials).
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  4 HQEAPPROACH FOCUS : HIGHENVIRONMENTAL QUALITY High Environmental Quality is a quality approach that aims at higher comfort during construction and in the use of buildings. It is based on a project "global cost" approach (both financial and environmental); from its design to the end of life phase, including ideally at least an energy balance sheet, the carbon footprint, and a life cycle analysis of built features. The building environmental quality approach is based on a technical reference system taking into account 2 components: an operation management system (SMO) to assess the environmental management implemented, and the building environmental quality (QEB) to evaluate the architectural and technical performance of the building. HQE is a trademark validated by the AFNOR1 certification "NF Ouvrage Démarche HQE®» and is inspired by the high energy performance label (HPE) with additional health, hydrological and vegetal requirements. HQE being criticized for its lack of transparency and advocacy for the commercial interests of industrials (AIMCC is a member of the trade union for building material manufacturers), some professionals prefer the British BREEAM and / or design process design related to French public labels. The operation management system (SMO) Implementing an operation management system allows to define the environmental quality target for the building and to organize the operation to reach this target while controlling all the set of operational processes related to programming, design and implementation of the building. The building environmental quality (QEB) The Building Environmental Quality is the ability for its intrinsic characteristics (building, equipment, land) to meet the following requirements: - Control the impacts on the external environment - Create a comfortable and healthy indoor environment. To meet these requirements, 14 targets divided into 4 groups are taken into account: - Eco-building targets (5) (harmonious relationship of the building with its environment, integrated choice of products / systems / construction processes, little disruption/nuisance of building site) - Eco-Management Targets (5) (energy, water, activity waste, service / maintenance) - Comfort targets (4) (hygrothermal, acoustic, visual, olfactory) - Health targets (3) (sanitary quality of spaces, air and water sanitary quality) To meet the HQE approach, the building must comply with the SMO and must reach at least : 7 targets at the basic level, 4 targets at the performance level and 3 targets at the very high performance level.