1 General provisions
1.0.1 This national standard is formulated with a view to carry through the relevant national laws, regulations, guidelines and policies, to improve the indoor environment of the public buildings as well as to improve the efficiency of energy utilization.
1.0.2 This national standard is applicable to the energy efficiency design of the new, reconstructed and extended public buildings.
1.0.3 For the purposes of this national standard, the building energy efficiency design, on the basis of ensuring the identical indoor environment parameters, shall reduce at least 50% of the total energy consumption on heating, ventilation, air conditioning and lighting compared to the conditions prior to the adoption of any energy efficiency measure. The lighting energy efficiency design of the public buildings shall meet the relevant regulations of the current national standard - "GB 50034-2004 Design Standard for Architectural Lighting".
1.0.4 For the energy efficiency design of public buildings, not only the requirements stipulated in this national standard but also those in the current relevant ones of the nation shall be complied with.
Foreword 3
1 General provisions 1
2 Terminology 2
3 Indoor environment energy efficiency design calculation parameters 3
4 Building and building thermotechnical design 7
5 HVAC energy efficiency design 13
5.1 General provisions 13
5.2 Heating 13
5.3 Ventilation and air conditioning 14
5.4 Cold/heat source of the air conditioning and heating system 20
5.5 Monitoring and control 24
Annex A Building external shading coefficient calculation method 26
Annex B Building envelope trade-off option calculation 30
Annex C Cost-effective insulation thickness of the cold- and hot-water pipeline of air conditioning system in the building 36
Wording Explanations 37
