1.0.1 This standard was formulated with a viewing to implementing the relevant national laws, regulations and policies on energy conservation and environment protection, improving the thermal environment in residential buildings in severe cold and cold zones and improving the energy efficiency of heating.
1.0.2 This standard applies to the design for energy efficiency of those constructed, renovated and extended residential buildings in severe cold and cold zones.
1.0.3 The residential buildings in severe cold and cold zones must adopt energy saving design. On the condition of ensuring the indoor thermal environment, the thermal, heating and ventilating as well as air conditioning design shall control the energy consumption for heating within the specified range.
1.0.4 The energy efficiency design of residential buildings in severe cold and cold zones shall not only comply with those specified in this standard, but also shall comply with those specified in the relevant current national standards.
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Climate Sub-zone and Calculation Parameter of Indoor Thermal Environment
4 Building and Envelope Thermal Design
4.1 General Requirements
4.2 Envelope Thermal Design
4.3 Building Envelope Thermal Performance Trade-off
5 Energy Efficiency Design on HVAC System
5.1 General Requirements
5.2 Heat Source, Heating Plant and Heat Supply Network
5.3 Heating System
5.4 Ventilation and Air-conditioning System
Appendix A Climate Zone Criteria, Weather Data, Heat Loss Index Requirements of Building for Cities
Appendix B Methodology for Mean Heat Transfer Coefficient and Linear Heat Transfer Coefficient of Thermal Bridge
Appendix C Calculation of Heat Transfer Coefficient of Ground of Building
Appendix D Simplification on Building Shading Coefficient
Appendix E Correction Factor of Building Envelope (ε) and Temperature Difference Correction Factor of Enclosing Balcony (ξ)
Appendix F Building Area and Volume
Appendix G Minimum Thickness of Heating Pipe's Insulation Layer (δmin)
Explanation of Wording in This Code
List of Quoted Standards
