CN115712798A - Refrigerator carbon efficiency ratio metering method and low carbon performance evaluation method for refrigerator - Google Patents
Refrigerator carbon efficiency ratio metering method and low carbon performance evaluation method for refrigerator Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 41
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Abstract
The invention discloses a refrigerator carbon efficiency ratio metering method and a refrigerator low-carbon performance evaluation method, wherein the carbon efficiency ratio is based on a life cycle angle, the refrigerator provides carbon dioxide equivalent discharged by unit adjustment volume meeting user requirements, and the carbon efficiency ratio is obtained by calculating the ratio of a refrigerator carbon footprint to the total of refrigerator function units, wherein the refrigerator carbon footprint is the total amount of greenhouse gas carbon discharged in a refrigerator system expressed by the carbon dioxide equivalent based on refrigerator life cycle evaluation, and the total of the refrigerator function units is the sum of the adjustment volumes provided during the refrigerator service life. The metering method considers the total carbon emission amount of the product and the functional contribution of the product, and distributes the carbon emission to each functional unit through the ratio, so that the metering method is scientific and reasonable. The invention also discloses a method for evaluating the low-carbon performance of the refrigerator by adopting the carbon efficiency ratio.
Description
Technical Field
The invention relates to a metering method of a refrigerator and a low-carbon performance evaluation method, in particular to a metering method of a carbon efficiency ratio of the refrigerator and a low-carbon performance evaluation method of the refrigerator.
Background
At present, the following parameters are used for evaluating the low carbon performance of the product:
(1) Product carbon footprint CFP
The concept of a carbon footprint (carbon footprint) arises from the "ecological footprint" proposed at the university of columbia. Mainly refers to the total amount of gas which is emitted in human production and consumption activities and is related to climate change, and compared with the difference of other carbon emission researches, the carbon footprint analyzes the life cycle of products or the emission breaking process which is directly and indirectly related to activities from the perspective of the life cycle.
The exact definition of the "carbon footprint" is not unified at present, and various national scholars have different understanding and knowledge, but generally refer to individuals and other entities (enterprises, activities, buildings, products, etc.) (all activities cause greenhouse gas or carbon dioxide emissions, including both direct emissions from fossil fuel combustion during manufacturing, heating and transportation, and indirect carbon emissions from the production and consumption of goods and services.
The product carbon footprint is the greenhouse gas or carbon dioxide emissions generated over the life cycle of the product. At present, there are a plurality of calculation methods aiming at the carbon footprint of the product, wherein the method is widely applied to ISO 14067 < greenhouse gas-product carbon footprint-quantification requirement and guideline > and PAS2050 < evaluation standard for greenhouse gas emission of commodities and services in life cycle >.
(2) Volume reduction
Nuclear Certified Emission Reduction (CDM), a specific term in the Clean Development Mechanism (CDM). According to a CDM glossary (seventh edition) issued by the Association of the United nations executive council (EB), the emission reduction amount of the certification is a unit which accords with the principle and the requirement of a clean development mechanism, and the emission reduction amount of a CDM or PoAs (planning type) project issued by the EB, one unit of CER is equal to one metric ton of carbon dioxide equivalent, and the Global Warming Potential (GWP) value is adopted when the CER is calculated, so that the greenhouse effect of non-carbon dioxide gas is converted into the carbon dioxide amount with the equivalent effect.
The product emission reduction is the difference between the carbon emission in the life cycle of the product and a reference value, and the current calculation method for the product emission reduction is as follows, ISO 14064-1:2018 "Specifications and guidelines for quantification and reporting of greenhouse gas emission and removal at the level of the organization of the first part of greenhouse gases" and ISO 14064-2:2019 standardization and guidance for quantification, monitoring and reporting of greenhouse gas emission reduction and elimination increase on project level of second part of greenhouse gas
The above method has the following disadvantages:
the carbon footprint of the product is the emission of greenhouse gases or carbon dioxide generated in the life cycle of the product, and the carbon footprint CFP is used for evaluating the low carbon performance of equipment, and the following problems exist:
1) The information disclosure is insufficient. The CFP capable of being equipped is in proportion to the size of the functional unit, the more functional units are equipped, the larger the CFP is, only the CFP is disclosed, and the functional units are not disclosed, so that the contribution of the product is ignored. The low-carbon technical level of the equipment cannot be comprehensively evaluated.
2) Value leads to errors. The CFP capable of being equipped is in direct proportion to the service life, the longer the service life of the equipment is, the larger the CFP is, the lower carbon technology of the equipment cannot be correctly reflected, and the equipment with long service life is not beneficial to popularization.
3) The information is misled. The absolute value of the CFP of the life cycle of the equipment is generally large, so that consumers are easily misled, the carbon emission is considered to be large when the equipment leaves a factory, energy conservation and emission reduction are not noticed when the equipment is used, and equipment manufacturers are unwilling to mark.
4) The applicability is poor. The CFP is suitable for evaluating the non-energy equipment, because the carbon emission of the life cycle of the non-energy equipment is basically determined when the equipment is delivered from a factory, and the carbon emission is small in the using stage. The equipment product is an energy-using product, the carbon emission which has occurred when the equipment product leaves a factory accounts for a small proportion of the carbon emission in the life cycle, and the carbon emission accounts for a large proportion in the use stage, such as: the refrigerator usage phase accounts for about 92%.
And secondly, the emission reduction amount is the difference between the carbon emission of the product and a carbon emission reference value, and the essence of the emission reduction amount is the carbon emission amount. The problems 1-3 of low carbon performance of the emission reduction amount evaluation equipment are also solved, and the emission reduction amount is suitable for the emission reduction effect after the low carbon technology is applied to evaluation items and organizations and is not suitable for evaluating the low carbon performance of products.
Disclosure of Invention
One of the purposes of the invention is to provide a method for metering the carbon efficiency ratio of a refrigerator, which considers the total carbon emission amount of a product and the functional contribution of the product, distributes the carbon emission to each functional unit through the ratio, and is scientific and reasonable.
The above object of the present invention is achieved by the following technical solutions: the metering method of the carbon efficiency ratio of the refrigerator is characterized by being calculated by the following formula:
in the formula:
CER-refrigerator carbon efficiency ratio, i.e. based on life cycle angle, the refrigerator provides an equivalent amount of carbon dioxide emitted per unit of adjusted volume to meet the user's needs, unit: kgCO 2 e/L；
CFP-refrigerator carbon footprint, i.e., evaluated based on refrigerator lifecycle, in carbon dioxide equivalent (CO) 2 e) Total amount of greenhouse gas carbon emissions in the refrigerator system expressed, unit: kgCO 2 e；
TFU-sum of functional units of the refrigerator, i.e. sum of the adjustment volumes provided during the lifetime of the refrigerator, unit: and L.
In the invention, the carbon footprint of the refrigerator comprises the carbon emission of the raw materials of the refrigerator in the acquisition stage, the carbon emission in the production and manufacturing stage, the carbon emission in the transportation stage and the carbon emission in the use stage, and the carbon footprint of the refrigerator is calculated by the following formula:
CFP＝CFP material +CFP produce +CFP transport +CFP use
in the formula:
CFP-refrigerator carbon footprint in units of: kgCO 2 e；
CFP material -total carbon emission in the raw material acquisition stage of the refrigerator, in units of: kgCO 2 e；
CFP produce -total carbon emission in the manufacturing stage of the refrigerator, in units of: kgCO 2 e；
CFP transport -total carbon emission during refrigerator transport in units of: kgCO 2 e；
CFP use -total carbon emission during the use phase of the refrigerator, in units of: kgCO 2 e
The carbon emission of the raw materials of the refrigerator in the stage of acquisition, the carbon emission in the production and manufacturing stage, the carbon emission in the transportation stage and the carbon emission in the use stage are calculated according to the method specified in ISO 14067.
The raw material acquisition stage consumes resources in the extraction and manufacturing process, and carbon emissions generated by energy. And collecting by taking a product bill of materials (BOM) as a support, and collecting the material, quality, quantity and the like corresponding to each product part.
In the invention, the total carbon emission amount of the refrigerator raw material acquisition stage is calculated by the following formula:
in the formula:
CFP material -total carbon emission in the raw material acquisition stage of the refrigerator, in units of: kgCO 2 e；
CFP i，material -the carbon emissions generated during the extraction and manufacturing of the i-th raw material, in units of: kgCO 2 e；
n-the number of types of raw materials contained in the refrigerator;
the production manufacturing stage includes, but is not limited to, the following process information:
resource and energy consumption in the production process of product parts;
resource and energy consumption in the product assembling process;
the resource and energy consumption of the product parts or the whole machine in the workshop and the factory during transportation and circulation;
provides the necessary production process flow chart.
The total carbon emission amount in the refrigerator production and manufacturing stage is calculated by the following formula:
in the formula:
CFP produce -total carbon emissions at the manufacturing stage of the refrigerator, in units of: kgCO 2 e；
FC i，produce -type i energy consumption at the manufacturing stage in units of: kg or m 3 ；
CEF i，produce -carbon emission coefficient of the energy source of the i-th class, in units of: kgCO 2 e/kg or kgCO 2 e/m 3 ；
n-the number of types of energy consumed in the manufacturing stage;
PC produce -electricity consumption in the production manufacturing stage, in units of: kWh;
PEF-power emission factor, in units of: kgCO 2 e/kWh；
And the transportation stage is the resource and energy consumption of the whole product in the transportation process from a factory to distributors in various regions.
The total carbon emission amount in the transportation stage of the refrigerator is calculated by the following formula:
in the formula:
CFP transport -total carbon emission during refrigerator transport in units of: kgCO 2 e；
FC i，transport -type i energy consumption in transport phase in units of: kg or m 3 ；
n-the number of types of energy consumed in the transportation phase;
CEF i，transport -carbon emission coefficient of an i-th energy source in units of: kgCO 2 e/kg or kgCO 2 e/m 3 ；
PC transport -electricity consumption during the transport phase in units of: kWh;
the carbon emission in the use stage comes from the consumption of electric energy, the annual electric consumption of the refrigerator is calculated by testing according to the method specified in GB 12021.2-2015 appendix D, and the total electric consumption in the use stage is determined according to the service life of the refrigerator.
The total amount of carbon emissions at the use stage of the refrigerator is calculated by the following formula:
CFP use ＝PC use ×PEF
in the formula:
CFP use -total carbon emission during the use phase of the refrigerator, in units of: kgCO 2 e；
PC use -the electricity consumption during the use phase of the refrigerator, in units of: kWh;
PEF-power emission factor, in units of: kgCO 2 e/kWh；
The calculation formula of the power consumption of the refrigerator in the use stage is as follows:
PC use ＝E dbx ×L
in the formula:
E dbx the annual power consumption of the refrigerator is as follows: kWh;
l-service life of refrigerator, unit is: and (5) year.
In the invention, the sum of the functional units of the refrigerator is the sum of the adjusting volumes provided during the service life of the refrigerator, and the calculation formula is as follows:
in the invention, the calculation formula of the total functional units of the refrigerator is as follows:
TFU＝V adj ×L
in the formula:
TFU-the sum of functional units of the refrigerator, in units: l;
V adj -the adjustment volume of the refrigerator, in units of: l;
l-the service life of the refrigerator, the unit is: and (5) year.
The adjustment volume of the refrigerator is calculated according to the method of 4.1 in GB 12021.2-2015, and the sum of the functional units of the refrigerator is determined according to the service life of the refrigerator.
The second purpose of the invention is to provide a method for evaluating the low carbon performance of the refrigerator through carbon efficiency ratio, which can truly reflect the level of the low carbon technology.
The above object of the present invention is achieved by the following technical solutions: the method for evaluating the low-carbon performance of the refrigerator by adopting the carbon efficiency ratio comprises the following evaluation standards:
when the refrigerator is a starless-chamber refrigerator, the carbon efficiency ratio is less than 0.208kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a frozen food storage case, the carbon efficiency ratio is less than 0.187kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a horizontal refrigerator, the carbon efficiency ratio is less than 0.317kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a horizontal refrigerator (cabinet), the carbon efficiency ratio is less than 0.217kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a vertical refrigerator (cabinet), the carbon efficiency ratio is less than 0.251kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a wine storage cabinet, the carbon efficiency ratio is less than 0.595kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a refrigerating and freezing box, the comprehensive carbon efficiency ratio is less than 0.161kgCO 2 e/L, judging the product to be a low-carbon product;
note: when the volume of the top-open door of the vertical and horizontal combined box (cabinet) exceeds 75 percent of the total volume, the vertical and horizontal combined box (cabinet) is returned to the horizontal freezer; otherwise, the refrigerator is placed in a vertical refrigerator (cabinet). The refrigeration and freezing conversion cabinet is examined according to the freezing mode. For the refrigerating and freezing box, the comprehensive carbon efficiency ratio is lower than the set limit value, and the refrigerator can be judged to be a low-carbon product.
The nouns appearing in the application adopt the terms and definitions defined by GB/T24040 and GB/T24044 national standards. Low-carbon product low-carbon product
The carbon emission data of the product meets the low carbon evaluation index requirement of the product compared with the similar product or the product with the same function.
Product carbon footprint of a product (CFP)
Based on life cycle assessment, in carbon dioxide equivalent (CO) 2 e) The product system shown is the sum of greenhouse gas emissions.
Functional unit
Quantified product system performance for reference units, source: GB/T24044-2008, 3.20. Functional unit of refrigerator
The refrigerator provides a storage space with a volume that meets the user's needs. Note: user requirements include, but are not limited to, requirements for different temperatures, the presence or absence of a defrost function, the presence or absence of a degerming function, etc. The volume adjustment in the invention is used for representing the volume provided by each compartment of the refrigerator product when the compartment meets the requirements of consumers.
The total sum of functional units of refrigerator (TFU) of refrigerator
The sum of the adjustment volumes provided during the lifetime of the refrigerator.
Carbon efficiency of refrigerator is higher than that of carbon efficiency of refrigerator
Based on the life cycle perspective, the refrigerator provides an equivalent amount of carbon dioxide discharged per unit of adjustment volume to meet the user's needs. Note: in the calculation process, substituting the standard power consumption of the refrigerator specified by 3.8 in GB 12021.2-2015 into the calculated carbon efficiency ratio as the standard carbon efficiency ratio of the refrigerator; substituting the comprehensive power consumption of the refrigerator specified in 3.10 of GB 12021.2-2015 into the calculated carbon efficiency ratio as the comprehensive carbon efficiency ratio of the refrigerator.
The method for metering the carbon efficiency ratio of the refrigerator considers the total carbon emission amount of the product and the functional contribution of the product, distributes the carbon emission to each functional unit through the ratio, and is scientific and reasonable. Meanwhile, the low-carbon performance of the product can be evaluated by a method for evaluating the low-carbon performance of the refrigerator through carbon efficiency ratio, and the level of the low-carbon technical level can be truly reflected. The method has the characteristics of clear definition, easiness in understanding, strong applicability and the like, and has a remarkable application value in the aspect of evaluating the low-carbon performance of energy-used products.
Compared with the prior art, the invention has the following remarkable effects:
1. the disclosed information is sufficient: the carbon efficiency ratio considers the total carbon emission of the product and the functional contribution of the product, and the carbon emission is distributed to each functional unit through the ratio, so that the low carbon level is found immediately.
2. Value oriented correct: the carbon efficiency ratio is not in direct proportion to the service life of the product, and on the contrary, under the condition that other parameters are the same, the longer the service life of the product is, the smaller the carbon efficiency ratio is, and the resource utilization principle is met.
3. The manufacturers are willing to cooperate with: manufacturers prefer to use carbon efficiency ratios to provide lower carbon performance than carbon footprints, and such "ratio" type of technical parameters are also used in the industry, for example: oil consumption per hundred kilometers, energy efficiency ratio and electric energy conversion rate.
4. The method is applicable to: the carbon efficiency is more suitable for products with energy consumption, the effect of the products can be quantified, particularly the products with energy consumption continuously in the use stage have the advantages of more products, more carbon emission and easy acceptance.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a boundary diagram of a refrigerator carbon footprint system of the present invention.
Detailed Description
The invention relates to a refrigerator carbon efficiency ratio metering method and a method for evaluating the low carbon performance of a refrigerator, which comprises the following specific processes:
1. evaluation target: is 1 refrigerator.
2. Product carbon footprint
2.1 product information
The product information is shown in the following table:
2.2 System boundaries
The product life cycle includes the following stages: the detailed block diagram of the "raw material acquisition stage", "production manufacturing stage", "transportation stage" and "use stage" is shown in fig. 1.
2.3 data quality analysis
2.3.1 data sources:
the data for the raw material acquisition stage, the product manufacturing stage and the transportation stage are extracted from the product life cycle report. When the carbon emission in the use stage is calculated, the information of the product such as the adjustment volume, the power consumption and the like is extracted from the product energy efficiency report.
2.3.2 raw material acquisition phase data selection and selection principle:
a) The input of items with the mass of auxiliary materials less than 0.1 percent of the total consumption of raw materials;
b) General solid waste less than 1% of the total solid waste discharge amount;
c) Auxiliary material, raw material and component less than 1% of product weight and composed of non-rare noble metal or non-high-purity substance
d) Auxiliary materials, raw materials and parts which are less than 0.1 percent of the weight of the product and are composed of rare noble metals or high-purity substances.
The input and output auxiliary materials, raw materials and the weight of parts neglected above are not more than 5% of the product weight comprehensively.
2.3.3 Secondary data use Life-cycle List database data
The database version adopted was:
2.4 carbon footprint evaluation List
2.4.1 raw material acquisition stage
According to the rule of 3.3.2- "if certain raw material data is not available, raw materials with weight ratio less than 1% can be excluded, but the total excluded amount does not exceed 5%", and in this data collection, some raw materials with weight less than 1% of the whole refrigerator are ignored.
Product raw material acquisition phase data sheet
The total carbon emission at the raw material acquisition stage is calculated by the formula:
in the formula:
CFP material -total carbon emission in the raw material acquisition stage of the refrigerator, in units of: kgCO 2 e；
CFP i，material -the carbon emissions generated during the extraction and manufacturing of the i-th raw material, in units of: kgCO 2 e；
n-the number of types of raw materials contained in the refrigerator;
the total carbon emission in the raw material acquisition stage is calculated to be 350.31kgCO 2 e。
2.4.2 production manufacturing stage
And the data in the production and manufacturing stages of the product are distributed by adopting a quantity distribution principle.
Energy consumption of key parts in production and manufacturing stage
Energy consumption of refrigerator product in assembling process
The total carbon emission at the manufacturing stage is calculated by the following formula:
in the formula:
CFP produce -total carbon emission in the manufacturing stage of the refrigerator, in units of: kgCO 2 e；
FC i，produce Consumption of type i energy (here natural gas) in production manufacturing stages, in units of: m is 3 ；
CEF i，produce The carbon emission coefficient of a class i energy source (here natural gas) in units of: kgCO 2 e/m 3 ；
n-the number of types of energy consumed in the manufacturing stage;
PC produce -electricity consumption in the production manufacturing stage, in units of: kWh;
PEF-power emission factor, in units of: kgCO 2 e/kWh；
The total carbon emission in the production and manufacturing stage is calculated to be 1.10kgCO 2 e。
2.4.3 product transportation phase
And (3) calculating the carbon emission of the single refrigerator in the transportation stage by adopting a distance distribution principle according to the data in the product transportation stage.
Sales transportation stage data sheet
| Item | Number of | Unit of |
| Average haul mileage | 1629 | km |
| Load capacity of truck | 250 | Table (Ref. Table) |
| Full load oil consumption of truck | 15 | L/100km |
| Density of diesel oil | 0.85 | kg/L |
| Carbon emission coefficient of diesel | 3.0959 | kgCO 2 e/kg |
| Carbon emission at the transportation stage of each refrigerator | 2.57 | kgCO 2 e |
The total amount of carbon emissions in the transport phase is calculated by the following formula:
in the formula:
CFP transport -total carbon emission during refrigerator transport in units of: kgCO 2 e；
FC i，transport The consumption of energy of the type i (here diesel) during the transport phase, in units of: kg;
n-the number of types of energy consumed in the transportation phase;
CEF i，transport carbon emission coefficient of an energy source of the i-th type (here diesel), in units of: kgCO 2 e/kg；
PC transport -electricity consumption during the transport phase in units of: kWh;
the total carbon emission in the transportation stage is calculated to be 2.57kgCO 2 e。
2.4.4 product use stage
The carbon emissions generated during the product use stage are derived from the consumption of electrical energy. According to the product energy efficiency record information, the annual power consumption of the refrigerator can be known, the service life of the refrigerator is counted according to 10 years, and the carbon emission of the refrigerator in the use stage is calculated.
| Item | Number of | Unit |
| Comprehensive power consumption | 0.817 | kWh/d |
| Annual power consumption | 298.205 | kWh |
| Service life | 10 | Year of year |
| Power consumption during use phase | 2982.05 | kWh |
| Factor of electric power emission | 0.581 | kgCO 2 e/kWh |
| Stage of use carbon emissions | 1732.57 | kgCO 2 e |
The total amount of carbon emissions of the use stage is calculated by the following formula:
CFP use ＝PC use ×PEF
in the formula:
CFP use -the total amount of carbon emissions at the stage of use of the refrigerator, in units of: kgCO 2 e；
PC use -the electricity consumption in the use stage of the refrigerator is: kWh;
PEF — power emission factor, in units of: kgCO 2 e/kWh。
The power consumption calculation formula of the use stage is as follows:
PC use ＝E dbx ×L
in the formula:
E dbx the annual power consumption of the refrigerator is as follows: kWh;
l-the service life of the refrigerator, the unit is: and (5) year.
The total carbon emission in the use stage is 1732.57kgCO 2 e。
2.4.5 product carbon footprint
The carbon footprint within the product system boundary is
| Life cycle of the product | Number of | Unit |
| Raw material acquisition stage | 350.31 | kgCO 2 e |
| Product manufacturing stage | 1.10 | kgCO 2 e |
| Stage of transportation | 2.57 | kgCO 2 e |
| Stage of use carbon emissions | 1732.57 | kgCO 2 e |
| Carbon footprint | 2086.55 | kgCO 2 e |
3. Sum of functional units of product
The sum of the functional units for low-carbon evaluation of the refrigerator is the sum of the adjustment volumes provided during the service life of the refrigerator, and the calculation formula is as follows:
in the invention, the calculation formula of the total functional units of the refrigerator is as follows:
TFU＝V adj ×L
in the formula:
TFU-the sum of functional units of the refrigerator, in units: l;
V adj -the adjustment volume of the refrigerator, in units: l;
l-service life of refrigerator, unit is: and (5) year.
The adjustment volume of the refrigerator is calculated according to the method of 4.1 in GB 12021.2-2015, and the sum of the functional units of the refrigerator is determined according to the service life of the refrigerator.
According to the product energy efficiency record information, the adjustment volume of the refrigerator can be known, the service life of the refrigerator is 10 years, and the total of the functional units of the refrigerator is calculated.
| Item | Number of | Unit |
| Adjusting volume | 1029.45 | L |
| Service life | 10 | Year-round |
| Sum of functional units | 10294.50 | L |
4. Carbon to effect ratio
The carbon efficiency ratio of the refrigerator is the quotient of the carbon footprint and the sum of the functional units according to a formula
Calculated, the carbon efficiency ratio of the refrigerator is 0.203kgCO 2 e/L。
5. Evaluation of Low carbon Performance
Refrigerator low-carbon product evaluation and judgment
The evaluation pair is classified as a refrigerator-freezer, and the evaluation value of the carbon efficiency ratio of the low-carbon product is 0.161kgCO 2 e/L. The carbon efficiency ratio of the refrigerator is 0.203kgCO 2 e/L is larger than the evaluation value of the low-carbon product, does not meet the evaluation requirement of the low-carbon product, and the evaluation result is unqualified.
The above embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions or alterations made to the above structures of the present invention without departing from the basic technical idea of the present invention according to the common technical knowledge and common practice in the art should fall within the scope of the present invention.
Claims (5)
1. The carbon efficiency ratio metering method of the refrigerator is characterized in that the metering method is calculated by the following formula:
in the formula:
CER-refrigerator carbon efficiency ratio, i.e. based on life cycle angle, the refrigerator provides an equivalent amount of carbon dioxide emitted per unit of adjusted volume to meet the user's needs, unit: kgCO 2 e/L；
CFP-refrigerator carbon footprint, i.e. total amount of greenhouse gas carbon emissions in the refrigerator system expressed as carbon dioxide equivalents based on refrigerator lifecycle evaluation, in units of: kgCO 2 e；
TFU-sum of functional units of the refrigerator, i.e. sum of the adjustment volumes provided during the lifetime of the refrigerator, unit: and L is used.
2. The method of claim 1, wherein the method further comprises the steps of: the refrigerator carbon footprint comprises the carbon emission of a refrigerator raw material acquisition stage, the carbon emission of a production and manufacturing stage, the carbon emission of a transportation stage and the carbon emission of a use stage, and is calculated by the following formula:
CFP＝CFP material +CFP produce +CFP transport +CFP use
in the formula:
CFP-refrigerator carbon footprint in units of: kgCO 2 e；
CFP material -total carbon emission in the raw material acquisition stage of the refrigerator, in units of: kgCO 2 e；
CFP produce -total carbon emission in the manufacturing stage of the refrigerator, in units of: kgCO 2 e；
CFP transport -total carbon emission during refrigerator transport in units of: kgCO 2 e；
CFP use Of the stage of use of the refrigeratorTotal carbon emissions, in units of: kgCO 2 e。
3. The method of claim 2, wherein the method further comprises the steps of:
the total carbon emission amount at the raw material obtaining stage of the refrigerator is calculated by the following formula:
in the formula:
CFP material -total carbon emission in the raw material acquisition stage of the refrigerator, in units of: kgCO 2 e；
CFP i，material -the carbon emissions generated by the extraction and manufacturing process of the i-th raw material, in units of: kgCO 2 e；
n-number of types of raw materials contained in the refrigerator;
the total carbon emission amount in the manufacturing stage of the refrigerator is calculated by the following formula:
in the formula:
CFP produce -total carbon emission in the manufacturing stage of the refrigerator, in units of: kgCO 2 e；
FC i，produce -type i energy consumption at the manufacturing stage in units of: kg or m 3 ；
CEF i，produce -carbon emission coefficient of the energy source of the i-th class, in units of: kgCO 2 e/kg or kgCO 2 e/m 3 ；
n-the number of types of energy consumed in the manufacturing stage;
PC produce -electricity consumption in the production manufacturing stage, in units of: kWh;
PEF-power emission factor, in units of: kgCO 2 e/kWh；
The total carbon emission amount in the transportation stage of the refrigerator is calculated by the following formula:
in the formula:
CFP transport -total carbon emission during refrigerator transport in units of: kgCO 2 e；
FC i，transport -type i energy consumption in transport phase in units of: kg or m 3 ；
n-the number of types of energy consumed in the transportation phase;
CEF i，transport -carbon emission coefficient of an i-th energy source in units of: kgCO 2 e/kg or kgCO 2 e/m 3 ；
PC transport -electricity consumption during the transport phase in units of: kWh;
the total amount of carbon emissions at the use stage of the refrigerator is calculated by the following formula:
CFP use ＝PC use ×PEF
in the formula:
CFP use -total carbon emission during the use phase of the refrigerator, in units of: kgCO 2 e；
PC use -the electricity consumption during the use phase of the refrigerator, in units of: kWh;
PEF-power emission factor, in units of: kgCO 2 e/kWh；
The calculation formula of the power consumption in the use stage of the refrigerator is as follows:
PC use ＝E dbx ×L
in the formula:
E dbx the annual power consumption of the refrigerator is as follows: kWh;
l-the service life of the refrigerator, the unit is: and (5) year.
4. The method of claim 3, wherein the method further comprises the steps of: the calculation formula of the total functional units of the refrigerator is as follows:
TFU＝V adj ×L
in the formula:
TFU-the sum of functional units of the refrigerator, in units: l;
V adj -the adjustment volume of the refrigerator, in units: l;
l-the service life of the refrigerator, the unit is: and (5) year.
5. A method for evaluating low carbon performance of a refrigerator using the carbon efficiency ratio obtained in claim 4, the method having the following evaluation criteria:
when the refrigerator is a starless-chamber refrigerator, the carbon efficiency ratio is less than 0.208kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a frozen food storage box, the carbon efficiency ratio is less than 0.187kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a horizontal refrigerator, the carbon efficiency ratio is less than 0.317kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a horizontal refrigerator (cabinet), the carbon efficiency ratio is less than 0.217kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a vertical refrigerator (cabinet), the carbon efficiency ratio is less than 0.251kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a wine storage cabinet, the carbon efficiency ratio is less than 0.595kgCO 2 e/L, judging the product to be a low-carbon product;
when the refrigerator is a refrigerating and freezing box, the comprehensive carbon efficiency ratio is less than 0.161kgCO 2 e/L, judging the product to be a low-carbon product.
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