Announcement of the Ministry of Housing and Urban-Rural Development on Issuing the National Standard "General Specification for Building Energy Conservation and Renewable Energy Utilization" shows that China will enforce the full text of the General Specification for Building Energy Conservation and Renewable Energy Utilization from April 1, 2022, covering new buildings, existing buildings, and renewable energy systems. The specification will open a new era of comprehensive application of building energy-efficient glass. The green buildings materials like energy-saving glass - ICESUN vacuum glass will usher in the spring of rapid development!
The "General Specification for Building Energy Conservation and Renewable Energy Utilization" is now approved as a national standard, numbered GB 55015-2021, and will be implemented from April 1, 2022. This specification is a mandatory engineering construction specification, and all provisions must be strictly implemented. The relevant mandatory provisions of the current engineering construction standards shall be repealed at the same time. If the relevant provisions in the current engineering construction standards are inconsistent with this code, the provisions of this code shall prevail.
The Points of Specification
1. The full text is mandatory and must be strictly implemented.
2. The general specifications for building energy conservation and renewable energy cover a wide range, involving new buildings, existing buildings, renewable energy systems, construction commissioning acceptance and operation management.
3. Calculation of building carbon emissions is mandatory.
4. Refinement of renewable energy utilization requirements.
5. The energy-saving design level of new buildings was further improved. The "General Specification" raises the requirements for thermal performance limits of residential buildings and public buildings. Different from the current energy-saving standards in most regions, the average design energy consumption level is reduced by 30% and 20% respectively on the basis of the current national and industrial standards for energy-saving design.
The average energy saving rate of residential buildings in severe cold and cold areas should be 75%;
The average energy saving rate of residential buildings in other climate zones should be 65%;
The average energy efficiency of public buildings should be 72%.
6. Newly added requirements for energy-saving design indicators for industrial buildings in moderate regions. Compared with the "Uniform Standard for Energy Efficiency Design of Industrial Buildings" GB 51245-2017, the "General Specifications" newly added energy-saving design indicators for industrial buildings with heating and air-conditioning systems set up in the mild A zone, expanding the scope of application of the industrial standard, and strictly enforced by industrial buildings in mild areas.
7. The efficiency and lighting requirements of the HVAC system have been comprehensively improved.
Significance and formulation context
The "General Specification for Building Energy Conservation and Renewable Energy Utilization" is launched to implement the national laws and regulations on energy conservation, ecological environment protection, and response to climate change, implement carbon peaking, carbon neutrality decision-making and deployment, and improve energy resource utilization efficiency , promote the utilization of renewable energy, reduce building carbon emissions, create a good building indoor environment, and meet the needs of high-quality economic and social development. The "Energy Conservation Code" implements the spirit of reforming and improving the engineering construction standard system, and plays an important role in improving the quality of buildings and promoting the high-quality and green development of the construction industry. It highlights the nature of technical regulations, and clarifies the mandatory indicators and basic requirements for design, construction, commissioning, acceptance, and operation management from three aspects: energy-saving design of new buildings, energy-saving of existing buildings, and utilization of renewable energy. The content structure, element composition, main technical indicators, etc. are in line with the relevant technical regulations and standards of developed countries, and generally reach the international advanced level.
Scope of application
It can be seen from the general provisions that the scope of application of this code is "design, construction, acceptance and operation management of building energy-saving and renewable energy building application systems for new, expanded and renovated buildings and existing building energy-saving renovation projects", involving new buildings. , Existing buildings, renewable energy systems, construction commissioning acceptance and operation management and other aspects.
Carbon Emission Intensity
2.0.1: The average design energy consumption level of new residential buildings and public buildings will be further reduced by 30% and 20% based on the energy-saving design standards implemented in 2016. Among them, the average energy-saving rate of residential buildings in severe and cold regions should be 75%, the average energy-saving rate of other climate regions should be 65%, and the average energy-saving rate of public buildings should be 72%. It can be expected that after the implementation on April 1, 2022, the building envelope industry (windows, doors, insulation materials industry) and other industries in the field of building energy conservation will benefit and usher in a new wave of growth.
2.0.3: There are clear and mandatory standards for carbon emission intensity. In the past, building-related carbon emission standards were mostly recommendations or suggestions, such as GBT50378-2019 "Green Building Evaluation Standards", and GB/T51141-2015 "Evaluation Standards for Green Retrofit of Existing Buildings" and its 2020 draft for comments, There is no mandatory requirement for carbon intensity.
2.0.5: Building energy-saving design shall be carried out for newly-built, expanded and renovated buildings, as well as energy-saving renovation of existing buildings. The feasibility study report, construction plan and preliminary design document of the construction project shall include the analysis report of building energy consumption, renewable energy utilization and building carbon emission.