CN106709265A - Photovoltaic system carbon emission calculation method based on full life circle ideology - Google Patents
Photovoltaic system carbon emission calculation method based on full life circle ideology Download PDFInfo
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- 239000002994 raw material Substances 0.000 claims abstract description 31
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- 238000004519 manufacturing process Methods 0.000 claims description 41
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- 239000000463 material Substances 0.000 claims description 19
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 8
- 239000004566 building material Substances 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
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- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 3
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- 239000000741 silica gel Substances 0.000 claims description 3
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- 241000196324 Embryophyta Species 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
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- 229910052751 metal Inorganic materials 0.000 description 1
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Abstract
The invention aims to provide a photovoltaic system carbon emission calculation method based on full life circle ideology. The method is used for assessing the total carbon emission in a photovoltaic power generation process. The method is generated based on the situation that a photovoltaic power generation system has the said problems, and aims to obtain the carbon emission generated within a full life circle of the photovoltaic power generation system through calculation according to the life cycle assessment analysis standard. By use of the method, the energy demand, raw material utilization and waste discharged to the environment as a result of all activities within the life cycle of the system can be assessed more comprehensively. According to the method, the carbon emission of the photovoltaic system within the whole life cycle from ''cradle'' to ''tomb'' is calculated comprehensively, and the influence of the carbon emission on the environment is researched; the defect of an existing photovoltaic system assessment system is overcome, and the limitation of photovoltaic system assessment is avoided.
Description
Technical field
The present invention relates to photovoltaic generating system, and in particular to photovoltaic generating system each several part life cycle carbon emission calculates system
Meter mode.
Background technology
At present, photovoltaic generation has turned into the hot spot technology in new energy, scientific and technological progress due to its flexibility and indissolubility
So that photovoltaic power generation technology is widely used in various routines and special dimension.But, although solar energy belongs to clean energy resource, uses
When will not also produce carbon emission, but from from the point of view of photovoltaic system Life cycle, situation may be really not so.Due to technology
Fall behind, the reason such as policy is lack of standardization, there is serious problem of environmental pollution at home in solar energy industry.From the point of view of with regard to production process,
Polysilicon production process can produce a large amount of poisonous and harmful substances, and the waste water,waste gas and industrial residue the like waste matter that production process is produced
Cannot effectively process and utilize, severe contamination is caused to resources such as big gas and water, soils.From the point of view of exactly using rear removal process,
Still there are problems that waste pollution.Photovoltaic system discarded object also has a significant impact to environment.
The content of the invention
Problem to be solved by this invention is to provide a kind of photovoltaic system carbon emission gauge based on Life cycle thought
Calculation method, the method is used to evaluate the whole carbon emission amount during photovoltaic generation.The present invention is deposited based on photovoltaic generating system
Produced in problem above, it is therefore intended that using evaluation of life cycle (Life Cycle Assessment, LCA) analysis mark
Standard, is calculated the carbon emission that photovoltaic generating system is produced in Life cycle.Can be more fully hereinafter using this kind of method
Energy demand of the evaluation system in its life cycle, raw material utilize and discarded object from Activities to environmental emission.
A kind of photovoltaic system carbon emission amount computational methods based on Life cycle thought, it is characterised in that including following
Step：
Step 1, photovoltaic system carbon emission model, i.e. photovoltaic system Life cycle are set up according to full lifecycle theory
Total carbon emission Ctot, unit sees below formula (1) for kg
Ctot=C1+C2+C3+C4+C5+C6 (1)
Wherein, C1 is the carbon emission amount that photovoltaic module raw material obtain the stage, and C2 is the carbon of the production phase of photovoltaic module
Discharge capacity, C3 is haulage stage carbon emission amount, and C4 is the carbon emission amount of construction stage, and C5 is the carbon emission in working service stage
Amount, C6 is the carbon emission amount for removing clean-up phase；
Step 2, determines that photovoltaic module raw material obtain the carbon emission amount C in stage1, unit is kg, including photovoltaic panel and its
Component raw material：Polysilicon, aluminium frame, glass panel, terminal box, encapsulant, backboard, welding, silica gel, the carbon of carton generation
Discharge capacity sees below formula (2)
EiIt is the electricity of each process consumption of production main line, unit is kWh,
RE is the carbon emission coefficient of electric power, and unit is kgCO2/ kWh,
MiIt is energy content in i-th kind of material unit building materials, unit is MJ/kg,
QiIt is i-th kind of material usage, unit is kg,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ,
WariIt is the wastewater flow rate of each production process treatment, unit is m3,
CwcIt is the CO of Aerobic Process for Treatment waste water2Emission factor, unit is kg/m3；
Step 3, determines the carbon emission amount C2 of the production phase of photovoltaic module, and unit is kg, and C2 points produced for photovoltaic panel
Carbon emission amount C in journey2-PVWith the carbon emission amount C in other photovoltaic module production processes in addition to photovoltaic panel2-OT, and photovoltaic panel
Carbon emission amount C in production process2-PVShown in computing formula such as following formula (3)
Wherein, each meaning of parameters in formula (3) is identical with formula (2),
Carbon emission amount C in addition to photovoltaic panel in other photovoltaic module production processes2-OTShown in computing formula such as following formula (4)
PiIt is the price of equipment, unit is ten thousand yuan,
RP is the carbon emission coefficient of industrial trade professional equipment, and unit is ten thousand yuan of kg/, then
C2=C2-PV+C2-OT；
Step 4, determines haulage stage carbon emission amount C3, and unit is kg, and it is handed over during deriving from transport photovoltaic module
Logical instrument consumes the carbon emission amount of fuel, shown in C3 computing formula such as following formula (5)
D is transportation range, and unit is km,
H is hauled weight, and unit is t,
GWPiIt is the global warming potential coefficient of greenhouse gases,
GiIt is the intensity of consumption of fuel oil, unit is L/ (tkm),
RGiIt is the greenhouse gas emission coefficient of fuel oil, units/kg/L；
Step 5, determines the carbon emission amount C4 of construction stage, and unit is kg, and it is divided into the carbon emission amount of construction consumptive material production
C4-MWith the carbon emission amount amount C of construction and installation process4-L, shown in computing formula such as following formula (6), (7)
Each meaning of parameters is identical with formula (2) in formula (6),
HiIt is the construction and installation stage, i-th kind of consumption of fossil fuel, its calculating formula is:
I-th kind of machine-team energy resource consumption of fossil fuel used by j plant equipment, kg/ machine-teams,
Use machine-team amount for j machineries in the construction and installation stage,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ, then
C4=C4-M+C4-L；
Step 6, determines the carbon emission amount C5 in working service stage, and unit is kg, and it is divided into the carbon produced by operational phase
Discharge capacity C5-UAnd the carbon emission amount C that maintenance phase is produced5-M, shown in computing formula such as following formula (8), (9)
Each meaning of parameters is identical with formula (2) in formula (8),
Each meaning of parameters is identical with formula (7) in formula (9), then
C5=C5-U+C5-M；
Step 7, it is determined that removing the carbon emission amount C6 of clean-up phase, unit is kg, and it is divided into system offal treatment generation
Carbon emission amount and the carbon emission amount that is produced in transportation of discarded object, shown in its computing formula such as following formula (10)
Each meaning of parameters is consistent with each meaning of parameters in preceding formula in formula.
Step 8, determines photovoltaic system Life cycle carbon emission amount Ctot, and unit is kg, is calculated photovoltaic system complete
Shown in the computing formula of the carbon emission amount of life cycle such as following formula (11)
Each meaning of parameters is consistent with meaning of parameters in above-mentioned steps.
The photovoltaic system carbon emission amount computational methods based on Life cycle thought that the present invention is provided, can also have this
The feature of sample, it is characterised in that：Wherein, in step 2, the electric power carbon emission factor can according to People's Republic of China's national development and
" the Chinese regional power grids line-based emission factor " for reforming committee's announcement is obtained, and the fossil energy carbon emission factor can be according to government
Between climate change special commission IPCC obtain.
The photovoltaic system carbon emission amount computational methods based on Life cycle thought that the present invention is provided, can also have this
The feature of sample, it is characterised in that：Wherein, in step 3, industrial trade professional equipment carbon emission coefficient y=2.252e+143e-1.654X, wherein e is year number, and thus calculating formula can obtain the carbon emission coefficient of the professional equipment in the corresponding time limit.
The photovoltaic system carbon emission amount computational methods based on Life cycle thought that the present invention is provided, can also have this
The feature of sample, it is characterised in that：Wherein, the plant equipment energy resource consumption in step 5 with《National unified construction mechanical one-shift expense
By norm》It is the energy resource consumption that each machinery is obtained with reference to arrangement.
The photovoltaic system carbon emission amount computational methods based on Life cycle thought that the present invention is provided, can also have this
The feature of sample, it is characterised in that：Wherein, energy content can be by consulting the text that forefathers research institute delivers in unit building materials in step 8
Offer and obtain.
Invention effect and effect
The invention provides a kind of photovoltaic system carbon emission amount computational methods based on Life cycle thought, using complete raw
Life cycle theory and Environmental Economics thought, study the production of polycrystalline silicon solar cell, installation, using and reclaimed
The carbon emission of journey, more fully calculate photovoltaic system from crable to the whole life cycle of " grave " in carbon emission amount, and
Study its influence to environment.Compensate for the shortcoming of existing evaluation photovoltaic system system, it is to avoid evaluate the limitation of photovoltaic system
Property.
Brief description of the drawings
Fig. 1 is existing evaluation of life cycle thinking figure；
Fig. 2 is the implementation steps schematic diagram of evaluation of life cycle
Fig. 3 is technology line frame graph of the present invention based on Whole Life Appraisal thinking；
Fig. 4 is the process chart of existing most widely used production polysilicon；
Fig. 5 is polycrystalline solar module flow sheet；And
Fig. 6 is certain product polycrystalline solar module quality of production flow chart.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, it is real below
Example combination accompanying drawing is applied to the principle of the photovoltaic system carbon emission amount computational methods based on Life cycle thought of the invention, specific
Step and implementation process are specifically addressed.
Embodiment
Below in conjunction with the accompanying drawings and application example is further described to the present invention.
Such as Fig. 1, shown in 2,3,4, a kind of photovoltaic system carbon emission amount computational methods based on Life cycle thought, including
Following steps：
Step 1, photovoltaic system carbon emission model, i.e. photovoltaic system Life cycle are set up according to full lifecycle theory
Total carbon emission Ctot, unit sees below formula (1) for kg
Ctot=C1+C2+C3+C4+C5+C6 (1)
Wherein, C1 is the carbon emission amount that photovoltaic module raw material obtain the stage, and C2 is the carbon of the production phase of photovoltaic module
Discharge capacity, C3 is haulage stage carbon emission amount, and C4 is the carbon emission amount of construction stage, and C5 is the carbon emission in working service stage
Amount, C6 is the carbon emission amount for removing clean-up phase.
Step 2, determines that photovoltaic module raw material obtain the carbon emission amount C in stage1, unit is kg, as shown in Figure 4, Figure 5,
Including photovoltaic panel and its component raw material：Polysilicon, aluminium frame, glass panel, terminal box, encapsulant, backboard, welding, silicon
Glue, the carbon emission amount of carton generation see below formula (2)
EiIt is the electricity of each process consumption of production main line, unit is kWh,
RE is the carbon emission coefficient of electric power, and unit is kgCO2/ kWh,
MiIt is energy content in i-th kind of material unit building materials, unit is MJ/kg,
QiIt is i-th kind of material usage, unit is kg,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ,
WariIt is the wastewater flow rate of each production process treatment, unit is m3,
CwcIt is the CO of Aerobic Process for Treatment waste water2Emission factor, unit is kg/m3。
Step 3, determines the carbon emission amount C2 of the production phase of photovoltaic module, and unit is kg, and C2 points produced for photovoltaic panel
Carbon emission amount C in journey2-PVWith the carbon emission amount C in other photovoltaic module production processes in addition to photovoltaic panel2-OT, and photovoltaic panel
Carbon emission amount C in production process2-PVShown in computing formula such as following formula (3)
Wherein, each meaning of parameters in formula (3) is identical with formula (2),
Carbon emission amount C in addition to photovoltaic panel in other photovoltaic module production processes2-OTShown in computing formula such as following formula (4)
PiIt is the price of equipment, unit is ten thousand yuan,
RP is the carbon emission coefficient of industrial trade professional equipment, and unit is ten thousand yuan of kg/, then
C2=C2-PV+C2-OT。
In the present embodiment, silicon material raw material obtain mining phase, smelting stage and purification phase of the stage for silicon ore.
And the raw material of other materials obtain the stage for aluminium frame, glass panel, terminal box, encapsulant, backboard, welding, silica gel, paper
The materials such as case obtain the stage.Its flow chart is as shown in FIG. 4 and 5.So that the carbon emission amount of silicon ore mining phase is calculated as an example.
" the regional that the electric power carbon emission factor can be announced according to the National Development and Reform Commission of the People's Republic of China (PRC)
Power network line-based emission factor " is obtained, and the fossil energy carbon emission factor can be according to Intergovernmental Panel on Climate Change IPCC
Obtain.
The raw material of table 1 obtain stage carbon emission amount computational chart (as a example by silicon ore mining phase)
Step 3, determines the carbon emission amount C2 of the production phase of photovoltaic module, and unit is kg, and C2 points produced for photovoltaic panel
Carbon emission amount C in journey2-PVWith the carbon emission amount C in other photovoltaic module production processes in addition to photovoltaic panel2-OT, and photovoltaic panel
Carbon emission amount C in production process2-PVShown in computing formula such as following formula (3)
Wherein, each meaning of parameters in formula (3) is identical with formula (2),
Carbon emission amount C in addition to photovoltaic panel in other photovoltaic module production processes2-OTShown in computing formula such as following formula (4)
PiIt is the price of equipment, unit is ten thousand yuan,
RP is the carbon emission coefficient of industrial trade professional equipment, and unit is ten thousand yuan of kg/, then
C2=C2-PV+C2-OT。
Wherein, in step 3, industrial trade professional equipment carbon emission coefficient y=2.252e+143e-1.654X, wherein X is year
Number, thus calculating formula can obtain the carbon emission coefficient of the professional equipment in the corresponding time limit.
Industrial trade professional equipment carbon emission coefficient can be according to Xu Guoquan (Xu Guoquan, Liu Zeyuan, the ginger approved in the industry
According to China, the factorization model and proof analysis of Chinese carbon emission：1995-2004, Chinese population resource and environment, 2006
The phase of volume 16 the 6th, 158-161) et al. propose and improved carbon emission amount decomposition model in algorithm be calculated, wherein analyzing
2002-2008 annual datas, the carbon emission coefficient for obtaining professional equipment follows following relation with time change：Y=2.252e+
143e-1.654X, therefore can obtain the carbon emission coefficient of professional equipment in the corresponding time limit.
The photovoltaic board component production phase includes pickling-ingot casting-section-battery-lamination-packaging processed etc. in this example,
As shown in Figure 5, Figure 6, by taking acid cleaning process computational chart 2 as an example.And other assemblies production phase such as inverter, header box, according to
Computing formula has shown in table 3.
The carbon emission amount computational chart (by taking pickling stages as an example) of the photovoltaic board component production phase of table 2
The carbon emission amount computational chart of the other assemblies production phase of table 3
Step 4, determines haulage stage carbon emission amount C3, and unit is kg, and it is handed over during deriving from transport photovoltaic module
Logical instrument consumes the carbon emission amount of fuel, shown in C3 computing formula such as following formula (5)
D is transportation range, and unit is km,
H is hauled weight, and unit is t,
GWPiIt is the global warming potential coefficient of greenhouse gases,
GiIt is the intensity of consumption of fuel oil, unit is L/ (tkm),
RGiIt is the greenhouse gas emission coefficient of fuel oil, units/kg/L.
According to above computational methods, this example haulage stage so that the transport of aluminium frame is calculated as an example, its carbon emission amount such as institute of table 4
Show.
The carbon emission amount (by taking the transport of aluminium frame as an example) in the haulage stage of table 4
Step 5, determines the carbon emission amount C4 of construction stage, and unit is kg, and it is divided into the carbon emission amount of construction consumptive material production
C4-MWith the carbon emission amount amount C of construction and installation process4-L, shown in computing formula such as following formula (6), (7)
Each meaning of parameters is identical with formula (2) in formula (6),
HiIt is the construction and installation stage, i-th kind of consumption of fossil fuel, its calculating formula is:
I-th kind of machine-team energy resource consumption of fossil fuel used by j plant equipment, kg/ machine-teams,
Use machine-team amount for j machineries in the construction and installation stage,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ, then
C4=C4-M+C4-L。
Plant equipment energy resource consumption with《National unified construction mechanical one-shift expense standard》It is to obtain each machinery with reference to arrangement
Energy resource consumption.
For example preceding carbon emission amount and construction and installation process produced including construction building materials of carbon emission amount that construction stage produces
In carbon emission amount.Construction stage carbon emission amount calculates as shown in table 5 in this example.
5 construction and installation stage of table carbon emission amount computational chart
Step 6, determines the carbon emission amount C5 in working service stage, and unit is kg, and it is divided into the carbon produced by operational phase
Discharge capacity C5-UAnd the carbon emission amount C that maintenance phase is produced5-M, shown in computing formula such as following formula (8), (9)
Each meaning of parameters is identical with formula (2) in formula (8),
Each meaning of parameters is identical with formula (7) in formula (9), then
C5=C5-U+C5-M。
Computational methods as above, but because photovoltaic system operational phase belongs to renewable energy power generation, have no any energy consumption with
And discharge.And in this example, photovoltaic generating system maintenance phase belongs to manual maintenance, ignore the personnel's carbon emission in manual work
Amount, therefore working service stage carbon emission amount is 0 in this example.
Step 7, it is determined that removing the carbon emission amount C6 of clean-up phase, unit is kg, and it is divided into system offal treatment generation
Carbon emission amount and the carbon emission amount that is produced in transportation of discarded object, shown in its computing formula such as following formula (10)
Each meaning of parameters is consistent with each meaning of parameters in preceding formula in formula.
As before, the carbon that the carbon emission produced including system offal treatment and discarded object are produced in transportation is arranged
Put.Because the photovoltaic system component overwhelming majority is glass and metal, belong to recyclable materials, therefore processing procedure carbon emission
Measure is 0.And in this example, the carbon emission amount that the discarded object haulage stage produces calculates as shown in table 6.
Table 6 removes the carbon emission amount computational chart of clean-up phase
Step 8, determines photovoltaic system Life cycle carbon emission amount Ctot, and unit is kg, is calculated photovoltaic system complete
Shown in the computing formula of the carbon emission amount of life cycle such as following formula (11)
Each meaning of parameters is consistent with meaning of parameters in above-mentioned steps.
The document that energy content can be delivered by consulting forefathers research institute in unit building materials in step 8 is obtained.
Life cycle total carbon emission is as shown in table 7 in being calculated this example project according to above step.
The photovoltaic system Life cycle total carbon emission of table 7
| Stage | Carbon emission amount (kgCO2) | Proportion |
| Raw material obtain the stage | 15995418.94 | 73.33% |
| The photovoltaic module production phase | 5086893.175 | 23.32% |
| Haulage stage | 48438.64 | 0.22% |
| Construction stage | 608038.1804 | 2.79% |
| The working service stage | 0 | 0 |
| Remove clean-up phase | 73825.13 | 0.34% |
| CO2Total emission volumn | 21812614.07 | 100% |
Fig. 4, Fig. 6 are instance with information, and polycrystalline silicon raw material extraction process used by photovoltaic panel is used and changed in example project
Good Siemens Method.Fig. 6 is based on flow chart shown in Fig. 4, Fig. 5, there is provided photovoltaic module is from raw material to production overall process in example project
Data.
The effect of embodiment and beneficial effect
A kind of photovoltaic system carbon emission amount computational methods based on Life cycle thought are present embodiments provided, using complete
Life cycle theory and Environmental Economics thought, study the production of polycrystalline silicon solar cell, installation, using and reclaim
The carbon emission of process, more fully calculate photovoltaic system from crable to the whole life cycle of " grave " in carbon emission amount,
And study its influence to environment.Compensate for the shortcoming of existing evaluation photovoltaic system system, it is to avoid evaluate the office of photovoltaic system
It is sex-limited.
Claims (5)
1. a kind of photovoltaic system carbon emission amount computational methods based on Life cycle thought, it is characterised in that including following step
Suddenly：
Step 1, the carbon row that photovoltaic system carbon emission model, i.e. photovoltaic system Life cycle are set up according to full lifecycle theory
Put total amount Ctot, unit sees below formula (1) for kg
Ctot=C1+C2+C3+C4+C5+C6 (1)
Wherein, C1 is the carbon emission amount that photovoltaic module raw material obtain the stage, and C2 is the carbon emission of the production phase of photovoltaic module
Amount, C3 is haulage stage carbon emission amount, and C4 is the carbon emission amount of construction stage, and C5 is the carbon emission amount in working service stage, C6
To remove the carbon emission amount of clean-up phase；
Step 2, determines that photovoltaic module raw material obtain the carbon emission amount C in stage1, unit is kg, including photovoltaic panel and its component it is former
Material：Polysilicon, aluminium frame, glass panel, terminal box, encapsulant, backboard, welding, silica gel, the carbon emission amount of carton generation
See below formula (2)
EiIt is the electricity of each process consumption of production main line, unit is kWh,
RE is the carbon emission coefficient of electric power, and unit is kgCO2/ kWh,
MiIt is energy content in i-th kind of material unit building materials, unit is MJ/kg,
QiIt is i-th kind of material usage, unit is kg,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ,
WariIt is the wastewater flow rate of each production process treatment, unit is m3,
CwcIt is the CO of Aerobic Process for Treatment waste water2Emission factor, unit is kg/m3；
Step 3, determines the carbon emission amount C2 of the production phase of the photovoltaic module, and unit is kg, and C2 points produced for photovoltaic panel
Carbon emission amount C in journey2-PVWith the carbon emission amount C in other photovoltaic module production processes in addition to photovoltaic panel2-OT, and photovoltaic panel
Carbon emission amount C in production process2-PVShown in computing formula such as following formula (3)
Wherein, each meaning of parameters in formula (3) is identical with formula (2),
Carbon emission amount C in addition to photovoltaic panel in other photovoltaic module production processes2-OTShown in computing formula such as following formula (4)
PiIt is the price of equipment, unit is ten thousand yuan,
RP is the carbon emission coefficient of industrial trade professional equipment, and unit is ten thousand yuan of kg/, then
C2=C2-PV+C2-OT；
Step 4, determines haulage stage carbon emission amount C3, and unit is kg, and it derives from traffic work during transport photovoltaic module
The carbon emission amount of tool consumption fuel, shown in C3 computing formula such as following formula (5)
D is transportation range, and unit is km,
H is hauled weight, and unit is t,
GWPiIt is the global warming potential coefficient of greenhouse gases,
GiIt is the intensity of consumption of fuel oil, unit is L/ (tkm),
RGiIt is the greenhouse gas emission coefficient of fuel oil, units/kg/L；
Step 5, determines the carbon emission amount C4 of construction stage, and unit is kg, and it is divided into the carbon emission amount C of construction consumptive material production4-MWith
The carbon emission amount amount C of construction and installation process4-L, shown in computing formula such as following formula (6), (7)
Each meaning of parameters is identical with formula (2) in formula (6),
HiIt is the construction and installation stage, i-th kind of consumption of fossil fuel, its calculating formula is:
I-th kind of machine-team energy resource consumption of fossil fuel used by j plant equipment, kg/ machine-teams,
Use machine-team amount for j machineries in the construction and installation stage,
RMiIt is i-th kind of material correspondence energy and carbon emission amount conversion coefficient, unit is kg (c)/MJ, then
C4=C4-M+C4-L；
Step 6, determines the carbon emission amount C5 in working service stage, and unit is kg, and it is divided into the carbon emission produced by operational phase
Amount C5-UAnd the carbon emission amount C that maintenance phase is produced5-M, shown in computing formula such as following formula (8), (9)
Each meaning of parameters is identical with formula (2) in formula (8),
Each meaning of parameters is identical with formula (7) in formula (9), then
C5=C5-U+C5-M；
Step 7, it is determined that removing the carbon emission amount C6 of clean-up phase, unit is kg, and it is divided into the carbon of system offal treatment generation
The carbon emission amount that discharge capacity and discarded object are produced in transportation, shown in its computing formula such as following formula (10)
Each meaning of parameters is consistent with each meaning of parameters in the preceding formula in formula；
Step 8, determines photovoltaic system Life cycle carbon emission amount Ctot, and unit is kg, is calculated the full life of photovoltaic system
Shown in the computing formula of the carbon emission amount in cycle such as following formula (11)
Each meaning of parameters is consistent with meaning of parameters described in above-mentioned steps.
2. the photovoltaic system carbon emission amount computational methods based on Life cycle thought according to claim 1, its feature
It is：
Wherein, in step 2, the electric power carbon emission factor can be public according to the National Development and Reform Commission of the People's Republic of China (PRC)
" the Chinese regional power grids line-based emission factor " of cloth is obtained, and the fossil energy carbon emission factor can become according to inter-governmental weather
Change special commission IPCC to obtain.
3. the photovoltaic system carbon emission amount computational methods based on Life cycle thought according to claim 1, its feature
It is：
Wherein, in step 3, the industrial trade professional equipment carbon emission coefficient y=2.252e+143e-1.654X, wherein X is the time
Number, thus calculating formula can obtain the carbon emission coefficient of the professional equipment in the corresponding time limit.
4. the photovoltaic system carbon emission amount computational methods based on Life cycle thought according to claim 1, its feature
It is：
Wherein, the plant equipment energy resource consumption in step 5 with《National unified construction mechanical one-shift expense standard》It is with reference to arrangement
Obtain the energy resource consumption of each machinery.
5. the photovoltaic system carbon emission amount computational methods based on Life cycle thought according to claim 1, its feature
It is：
Wherein, the document that energy content can be delivered by consulting forefathers research institute in unit building materials in step 8 is obtained.
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