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GB/T 51366-2019: Standard for building carbon emission calculation
GB/T 51366-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB/T 51366-2019
Standard for building carbon emission calculation
ISSUED ON: APRIL 09, 2019
IMPLEMENTED ON: DECEMBER 01, 2019
Issued by: Ministry of Housing and Urban-Rural Development of PRC;
State Administration for Market Regulation.
Table of Contents
Foreword ... 5
1 General provisions ... 7
2 Terms and symbols ... 8
2.1 Terms ... 8
2.2 Symbols ... 8
3 Basic requirements ... 13
4 Carbon emission calculation for operation period ... 14
4.1 General requirements ... 14
4.2 Building HVAC system ... 15
4.3 Domestic hot water system ... 18
4.4 Lighting and elevator system ... 19
4.5 Renewable energy system ... 20
5 Carbon emission calculation for construction and demolition period ... 23
5.1 General requirements ... 23
5.2 Building construction ... 23
5.3 Building demolition ... 26
6 Carbon emission calculation for building material production and transportation
period ... 28
6.1 General requirements ... 28
6.2 Building material production ... 29
6.3 Building material transportation ... 30
Appendix A Main energy carbon emission factor ... 31
Appendix B Building using characteristics ... 33
Appendix C Energy consumption rating per machine per team ... 36
Appendix D Carbon emission factor for building material ... 43
Appendix E Carbon emission factor for building material transportation ... 45
Explanation of wording in this standard ... 46
List of quoted standards ... 47
Standard for building carbon emission calculation
1 General provisions
1.0.1 This standard was formulated, in order to implement the national policies on
addressing climate change and energy conservation and emission reduction, standardize
the calculation method of building carbon emissions, save resources, protect the
environment.
1.0.2 This standard applies to the calculation of carbon emissions, during the operation,
construction and demolition, production and transportation of building materials, for
newly built, expanded, renovated civil buildings.
1.0.3 In addition to complying with this standard, the calculation of building carbon
emissions shall also comply with the current relevant national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Building carbon emission
The total greenhouse gas emissions, which are produced by a building during its related
building material production and transportation, construction and demolition, operation
stages, expressed in carbon dioxide equivalents.
2.1.2 Accounting boundary
The calculation scope of greenhouse gas emissions, which are related to the production
and transportation, construction and demolition, operation and other activities of
building materials.
2.1.3 Carbon emission factor
Coefficients that correspond energy and material consumption to carbon dioxide
emissions, which are used to quantify carbon emissions from activities related to the
building, at different stages.
2.1.4 Carbon sink of buildings
The amount of carbon dioxide, which is absorbed and stored by greenery and vegetation
from the air, within the scope of a defined building project.
2.1.5 Global warming potential
The ratio -- of the time-accumulated radiation force caused by the pulse emission of 1
kg of substance TO 1 kg of carbon dioxide (CO2), within a fixed time range.
2.2 Symbols
2.2.1 Geometric dimensions
A - Building area;
Ac - Solar collector area;
Ai - The lighting area of the i-th room;
Ap - The net area of photovoltaic panels of the photovoltaic system;
Aw - Windward area of fan blades;
i - Type of terminal energy consumed by the building, including electricity, gas, oil,
municipal heat, etc.;
j - Type of building energy system, including HVAC, lighting, domestic hot water
system, etc.;
Cp - Annual carbon reduction amount of building green space carbon sink system
(kgCO2/a);
y - Building design life (a);
A - Building area (m2).
4.2 Building HVAC system
4.2.1 The energy consumption of the HVAC system shall include the energy
consumption of cold sources, heat sources, transmission and distribution systems,
terminal air treatment equipment.
4.2.2 The calculation method of energy consumption of HVAC system shall comply
with the following provisions:
1 The monthly average method shall be used to calculate the annual cumulative
cooling load and cumulative heating load;
2 The number of indoor personnel, lighting power, equipment power, indoor set
temperature, HVAC system operating hours shall be set separately for working
days and holidays;
3 The start and end times of heating and cooling shall be calculated, based on the
load calculation results and indoor environmental parameters;
4 It shall reflect the impact of the thermal inertia of the building envelope on the
load;
5 The load calculation shall be able to calculate no less than 10 building partitions;
6 The impact of intermittent operation of the HVAC system on the load calculation
results shall be calculated;
7 The impact of energy system form, efficiency, partial load characteristics on energy
consumption shall be considered;
8 The calculation results shall include load calculation results and output system
energy consumption calculation results by energy type;
9 Building operation parameters can be determined by referring to the building
operation characteristics in Appendix B of this standard.
4.2.3 The building zoning in the building carbon emission calculation model shall
consider the physical separation of the building, the functions of the building area, the
HVAC system that provides services to the zoning, the lighting in the zone (through
external windows or skylights).
4.2.4 The annual heating (cooling) load shall include the heat loss of the building
envelope and the heating (cooling) demand for processing fresh air. The heating
(cooling) demand for processing fresh air shall deduct the heating (cooling) recovered
from the exhaust air.
4.2.5 In the calculation of building carbon emissions, the calculation parameters of the
indoor environment of the building shall be consistent with the design parameters and
shall comply with the requirements of the current relevant national standards.
4.2.6 The selection of meteorological parameters for building carbon emission
calculations shall comply with the current industry standard "Standard for weather data
of building energy efficiency" JGJ/T 346.
4.2.7 Building carbon emission calculations shall define the building envelope; the
thermal performance and construction practices of the envelope shall be consistent with
the design documents.
4.2.8 In the calculation of building carbon emissions, the cumulative cooling load and
cumulative heating load of the building shall be calculated separately.
4.2.9 The cumulative heating and cooling loads in building carbon emission
calculations shall be determined based on the following:
1 Heat transferred through the building envelope;
2 Solar radiation heat entering through the transparent envelope structure;
3 Human body heat dissipation;
4 Lighting heat dissipation;
5 Heat dissipation from equipment, appliances, pipes and other internal heat sources;
6 The heat dissipation of food or materials;
7 The heat brought in by the penetrating air;
8 The latent heat generated by various moisture dissipation processes.
4.2.10 When calculating building carbon emissions, i...