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
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.
Contents of CJJ 34-2010
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
