1.0.1 This code is formulated with a view to save energy, protect environment, promote production, improve people's lives, develop district heating services of cities and towns, improve the level of engineering design and achieve advanced technology economic rationality, safety and usability.
1.0.2 This code is applicable to the design of the following city heating network with heating hot water in design pressure of less than or equal to 2.5MPa and in design temperature of less than or equal to 200℃; or heating steam in design pressure of less than or equal to 1.6MPa and in design temperature of less than or equal to 350℃:
1 The heating network based on heating source of heat power plant or boiler room, which is connecting from the heating source to the building heating;
2 The process system of newly-build, extended or reconstructed pipeline, booster pump station and heating station of heating network.
1.0.3 The city heating network design shall comply with the requirements of urban planning, and the esthetic appearance therein shall be noticed.
1.0.4 When designing city heating network in the earthquake, collapsible loess and expansive soil regions, not only shall this code be carried out, but also shall current "Code for Seismic Design of Outdoor Water Supply Sewerage Gas and Heating Engineering" GB 50032, "Code for Seismic Design of Outdoor Wwater Supply Sewerage Gas and Heating Engineering" GB 50032, "Technical Specifications for Construction Ground in Expanding Soil Areas" GBJ 112 and relevant national compulsive standards be met.
1.0.5 The design of city heating network shall not only comply with this code but also current relevant national standards.
Foreword I 1 General Provisions 2 Terms and Symbols 2.1 Terms 2.2 Symbols 3 Heat Consumption 3.1 Heating Load 3.2 Annual Heat Consumption 4 Heating Medium 4.1 Heating Mediums 4.2 Parameters of Heating Medium 4.3 Water Standard 5 Heating Network Types 6 Heat Supply Regulation 7 Hydraulic Calculation 7.1 Design Flow 7.2 Hydraulic Calculation 7.3 Parameter of Calculation 7.4 Pressure State 7.5 Pump Selection 8 Network Layout and Bury Method 8.1 Network Layout 8.2 Bury Method of Pipeline 8.3 Material and Connecting of Pipeline 8.4 Compensation of Thermal Expansion 8.5 Accessories and Components 9 Calculation of Stresses and Actions 10 Booster Pump Station and Substation 10.1 General Requirements 10.2 Booster Pump Station 10.3 Hot-water Substation 10.4 Steam Substation 11 Insulation and Anticorrosion 11.1 General Requirements 11.2 Insulation Calculation 11.3 Insulation Construction 11.4 Anticorrosion Coating 12 Power Supply and Lighting 12.1 General Requirements 12.2 Power Supply and Distributing 12.3 Lightening 13 Thermal Monitoring and Control 13.1 General Requirements 13.2 Parameter Monitoring and Control of Heating Source and Network 13.3 Parameter Monitoring and Control of Booster Pump Station 13.4 Parameter Monitoring and Control of Substation 13.5 Automation Adjustment of Heating System 14 Block Hot Water Heating Network 14.1 General Requirements 14.2 Hydraulic Calculation 14.3 Network Layout and Bury Method 14.4 Material of Pipeline 14.5 Regulation and Control Explanation of Wording in this Code List of Quoted Standards
