CJJ 34—2002 Urban Heating Network Design Code

Author: Ministry of Housing and Urban-Rural Development of the People's Republic of China
Publisher:
Publish Date: 2007-08-01
Features: The "CJJ34—2002 Urban Heating Network Design Specification" is published by China Building Industry Press. The main technical content of this standard includes: 1. General Provisions; 2. Terms and Symbols; 3. Heat Consumption; 4. Heating Medium; 5. Heating Network Types; 6. Heating Regulation; 7. Hydraulic Calculation; 8. Network Layout and Installation; 9. Pipe Stress Calculation and Force Calculation; 10. Intermediate Pumping Stations and Heating Stations; 11. Insulation and Anti-Corrosion Coatings; 12. Power Supply and Lighting; 13. Thermal Testing and Control. The supplementary and revised technical content includes: 1. Main supplementary content: Energy-saving building heat indicators; heating network cooling load and industrial load; heating network operation regulation (considering factors such as individual metering and multi-heat source network operation); multi-heat source hot water heating systems and heating network reliability requirements; design requirements for steam pipelines, condensate pipelines, and industrial heating stations; ring network hydraulic calculation and dynamic hydraulic analysis, etc. 2. Main revised content: Heat consumption calculation; water quality standards; recommended values for the specific resistance of the main trunk line of hot water heating networks; technical requirements for direct burial of hot water and steam pipelines; design requirements for intermediate pumping stations and heating stations; insulation calculation; thermal network dispatch automation. This standard is managed and the interpretation of mandatory provisions is handled by the Ministry of Housing and Urban-Rural Development, while the specific technical content is interpreted by the leading drafting unit. The leading drafting unit of this standard is: Beijing Gas and Heating Engineering Design Institute (Address: No. 40, Xiaojiangfang Hutong, Xidan North Street, Beijing; Zip Code: 100032). The participating drafting units of this standard are: Tianjin Thermal Power Design Institute, Air Conditioning Research Institute of the China Academy of Building Research, No. 725 Research Institute of the 7th Academy of China Shipbuilding Research Group, Beijing Houtianai Central Heating Equipment Co., Ltd., Plate Heat Exchanger Factory of Lanzhou Petrochemical Machinery General Factory, Shenyang Heating Engineering Design Research Institute.