It was recently learned that the national standard "Architectural Lighting Design Standard GB50034-2004" that has been implemented for more than ten years will be abolished. The new version of the national standard "Architectural Lighting Design Standard GB50034-2013" will be officially implemented on June 1, 2014. As soon as the news came out, it attracted widespread attention throughout the industry.
It is understood that the new version of the "Architectural Lighting Design Standard GB50034-2013" (hereinafter referred to as the "Standard") was compiled and reviewed by the Building Environment and Energy Conservation Standardization Technical Committee of the Ministry of Housing and Urban-Rural Development. Approved by the Ministry of Construction and jointly issued with the State Administration of Quality Supervision, Inspection and Quarantine, it is my country’s basic general standard for indoor functional lighting design approval and release. It plays an important role in improving lighting levels and lighting quality, promoting scientific and technological progress in the field of lighting technology, and implementing green lighting.
The new "Standards" will not only greatly promote the development of the lighting industry, but also provide legal basis and standard specifications for relevant enterprises and specific implementers in the lighting industry. It will also be conducive to the future development of urban and rural architectural lighting and greatly improve urban and rural architectural lighting.
Then, under what background was the new "Standard" revised? How was the revision process? Which aspects do you focus more on? What are the differences from the original standard? What LED-related content has been revised and added, and why? What impact will it have on LED companies, designers, engineering contractors, etc.? How should all parties respond? Recently, our reporter interviewed Zhao Jianping, deputy director of the Institute of Building and Environmental Energy Conservation of the China Academy of Building Sciences.
Standards must keep pace with industry development
"Architectural Lighting Design Standard GB50034" is the most important standard for architectural engineering designers to design and apply lighting electrical appliances. It includes quantitative indicators (such as illuminance), quality indicators (illumination uniformity, glare limit, light source color, color rendering, reflectance, etc.), lighting power density limits, lighting distribution and control, etc. for various types of architectural lighting design. It covers lighting standards and energy-saving standards for residential buildings, public buildings and industrial buildings. It plays an important role in promoting the progress of lighting technology and promoting efficient lighting products.
According to Zhao Jianping, the new "Standard" is based on the Ministry of Housing and Urban-Rural Development's Jianbiao [2011] No. 17: "Notice on the Issuance of the "2011 Engineering Construction Standards and Specifications Formulation and Revision Plan", and was revised by the China Academy of Building Research in conjunction with relevant units on the basis of the original standard "Architectural Lighting Design Standard GB50034-2004". The lighting energy saving part was completed by the Chief Editor of the Department of Resource Conservation and Environmental Protection of the National Development and Reform Commission.
The new "Standard" applies to the interior lighting design of various types of residential buildings, public buildings and industrial buildings. Public buildings include library buildings, office buildings, store buildings, performance buildings, hotel buildings, medical buildings, educational buildings, exhibition buildings, exhibition buildings, transportation buildings, financial buildings, sports buildings, etc. In addition, the new "Standards" should also comply with the clear requirements of various provisions of the standards for the lighting design of newly built, renovated and expanded residential buildings, public buildings and industrial buildings as well as secondary renovations.
Regarding the background and original intention of the revision of the "Standards", Zhao Jianping said that with the continuous development of lighting technology and applications, the application fields continue to expand, especially the rapid development of LED technology, and its indoor and outdoor applications continue to expand. Coupled with the trend of energy conservation and emission reduction, new requirements are put forward for architectural design standards.
"The backwardness of standards will inevitably greatly hinder industrial development, lead to disorderly competition in the industry, and gradually weaken international competitiveness. Therefore, the content of standards must keep up with the pace of development in a timely manner." Zhao Jianping emphasized.
The standard preparation must not only be people-oriented, create a good light environment, reflect the level of lighting technology in my country and promote its development, but also be scientific, practical, and forward-looking. It must reflect China's actual level while moving closer to international standards. It must be technologically advanced and economically reasonable, while also ensuring easy maintenance, safe use, energy conservation, environmental protection, health protection and green lighting.
Against this background, based on extensive investigation and research, simulation calculations, experimental verification, and careful summarization of my country's practical experience in engineering construction, with reference to relevant international standards and foreign advanced standards, and after extensive solicitation of opinions, the revision of the "Standards" was completed.
The revision process is complex and detailed
It is understood that the revision of the "Standards" began in April 2011 and lasted for one and a half years. It went through four stages: preparation, draft for soliciting opinions, submission for review, and submission for approval.
The period from April 2011 to September 2011 was the preparatory stage for the revision of the standard. This stage mainly completed the establishment of the standard preparation team; determined the main content of the standard and the composition of chapters and sections, and formulated a work outline for the standard revision; conducted a survey on the implementation of the current standard, completed the solicitation of opinions on the standard revision and the preliminary survey of the standard revision, and proposed key technical issues for the standard revision; and held the establishment meeting of the preparation team for the first time, stipulating the main technical content that needs to be modified and added in the new revised standard.
The period from October 2011 to July 2012 was the draft stage. This stage mainly completed research, special demonstration, preparation of draft, and solicitation of opinions, etc., specifically including:
First, through the investigation, comparison, and analysis of current lighting product performance, basic data were provided for formulating product performance requirements; major design institutes were organized to measure and analyze the LPD of a total of 398 cases of 13 types of buildings, and the basic data for formulating standards was completed.
Secondly, through a large amount of literature research and combined with actual measurement and investigation work, special research was conducted on foreign standards, lighting product performance, indoor application of semiconductors, lighting power density (LPD) and glare evaluation methods, etc., and five special research reports were formed, including "Lighting Product Performance Development Report", "Semiconductor Indoor Application Status and Development Trend", "Summary of Foreign Technical Standards and Specifications", "Lighting Power Density Demonstration Report", and "Indoor Glare Evaluation Method".
Once again, the preparation team held three working meetings, focusing on lighting distribution and control and emergency lighting issues; the application technical content of LED, and the "Architectural Lighting Design Standard" (preliminary draft for comments) formed the draft of the new "Standard".
Fourth, the preparation of the draft for comments and the description of the provisions was completed and sent to higher-level authorities, design institutes, schools, scientific research institutes, enterprises and other units for opinions on August 27, 2012. By the end of October 2012, a total of 50 units had received replies and 687 opinions on the standard.
The period from August 2012 to November 2012 was the review stage. Based on the analysis of the opinions put forward by the institute, a summary table of opinions was prepared and suggestions for handling were put forward. At the same time, multiple small-scale preparation group meetings were held based on the opinions raised, and relevant experts were invited to conduct special discussions on lighting power supply and distribution, technical requirements for semiconductor lighting products, lighting standard values, and lighting power density (LPD). The discussions were conducted chapter by chapter and section by section, and a consensus was formed. Through repeated deliberation, revision, supplement and improvement, a draft for review is formed. At the draft review meeting held on December 7 and 8, 2012, the participating experts and representatives listened to the preparation team’s introduction to the standard revision work, conducted careful and detailed discussions on the draft standard chapter by chapter and article by article, and successfully passed the review.
November to December 2012 was the approval stage. A meeting of the main writers of the preparation team was held on December 9, 2012. According to the review meeting's suggestions for revision of the standard, they conducted in-depth and detailed discussions one by one, carefully revised the review draft and its provisions, and submitted the revised technical content to the review expert team leader for confirmation. Finally, the standard submission draft and approval work were completed in December 2012.
Eight major changes
It is understood that the "Standard" is divided into 7 chapters and 2 appendices, which mainly include general design principles, terminology, basic regulations, lighting quantity and quality, lighting standard values, lighting energy saving, lighting distribution and control, etc. It mainly stipulates lighting standard values, lighting quality and lighting power density for residential, public and industrial buildings.
What are the differences between the old and new standards? What content has been revised? Zhao Jianping said that compared with the original standards, the new "Standards" pay more attention to the application of new products and new technologies, and eight items in technical content have been revised.
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