Method for metering carbon efficiency ratio of washing machine and method for evaluating low-carbon performance of washing machine

Abstract

The invention discloses a washing machine carbon-efficiency ratio metering method and a low-carbon performance evaluation method thereof, and the washing machine carbon-efficiency ratio, i.e., the carbon dioxide equivalent and the carbon-efficiency ratio discharged by the washing machine for providing unit clothes washing, is obtained by calculating the ratio of the washing machine carbon footprint to the sum of function units of the washing machine, the total amount of greenhouse gas carbon emission in a washing machine system is represented by carbon dioxide equivalent based on washing machine life cycle evaluation, and the sum of function units of the washing machine is the sum of clothes washed during the service life of the washing machine. According to the carbon efficiency ratio metering method, the total carbon emission amount of the product is considered, the function contribution of the product is also considered, the carbon emission is allocated to each function unit through the ratio, and the method is scientific and reasonable. The invention also discloses a method for evaluating the low-carbon performance of the washing machine by adopting the carbon efficiency ratio.

Description

Technical Field

[0001] The invention relates to a method for measuring and evaluating the carbon efficiency ratio of a laundry device, and in particular to a method for measuring the carbon efficiency ratio of a washing machine and a method for evaluating its low-carbon performance. Background Art

[0002] At present, the parameters for evaluating the low-carbon performance of products are as follows:

[0003] (1) Product Carbon Footprint CFP

[0004] The concept of carbon footprint originated from the "ecological footprint" proposed by Columbia University. It mainly refers to the total amount of gases related to climate change emitted in human production and consumption activities. Compared with other carbon emission studies, carbon footprint starts from the perspective of the life cycle and analyzes the emission process directly and indirectly related to the product life cycle or activities.

[0005] There is no unified definition of "carbon footprint" at present, and scholars from different countries have different understandings and perceptions, but generally speaking it refers to the greenhouse gas or carbon dioxide emissions caused by all activities of individuals and other entities (corporate organizations, activities, buildings, products, etc.), including both direct emissions from the combustion of fossil fuels during manufacturing, heating and transportation, as well as indirect carbon emissions caused by the production and consumption of goods and services.

[0006] Product carbon footprint is the greenhouse gas or carbon dioxide emissions generated during the product life cycle. There are currently a variety of calculation methods for product carbon footprint, among which the most widely used are ISO 14067 "Greenhouse Gas - Product Carbon Footprint - Quantitative Requirements and Guidelines" and PAS2050 "Specification for the Assessment of Greenhouse Gas Emissions of Goods and Services during the Life Cycle".

[0007] (2) Emission reduction

[0008] Certified Emission Reduction is a specific term in the Clean Development Mechanism (CDM). According to the CDM Glossary (7th Edition) issued by the United Nations Executive Board (EB), a certified emission reduction refers to a unit of emission reduction for a CDM or PoAs (planning) project that complies with the principles and requirements of the Clean Development Mechanism and is issued by the EB. One unit of CER is equivalent to one metric ton of carbon dioxide equivalent. The global warming potential coefficient (GWP) value is used when calculating CER to convert the greenhouse effect of non-carbon dioxide gases into an equivalent amount of carbon dioxide.

[0009] Product emission reduction is the difference between the carbon emissions during the product life cycle and the baseline value. The current calculation methods for product emission reduction are ISO 14064-1:2018 "Greenhouse gases Part 1: Specification and guidance for quantification and reporting of greenhouse gas emissions and removals at the organizational level" and ISO 14064-2:2019 "Greenhouse gases Part 2: Specification and guidance for quantification, monitoring and reporting of greenhouse gas emission reductions and removals at the project level"

[0010] The above method has the following disadvantages:

[0011] 1. Product carbon footprint refers to the greenhouse gas or carbon dioxide emissions generated during the product life cycle. The following problems exist in using carbon footprint CFP to evaluate the low-carbon performance of energy-using equipment:

[0012] 1) Insufficient information disclosure. The CFP of energy-consuming equipment is proportional to the size of the functional unit. The more functional units the equipment has, the greater the CFP. Disclosing only the CFP without disclosing the functional unit will ignore the contribution of the product and fail to fully evaluate the low-carbon technology level of the equipment.

[0013] 2) Wrong value orientation. The CFP of energy-consuming equipment is proportional to its service life. The longer the service life of the equipment, the greater the CFP. This cannot correctly reflect the level of low-carbon technology of the equipment and is not conducive to the promotion of long-life equipment.

[0014] 3) Misleading information. The absolute value of CFP in the life cycle of energy-consuming equipment is generally large, which can easily mislead consumers into thinking that the carbon emissions of the equipment are already large when it leaves the factory, and that they do not pay attention to energy conservation and emission reduction when using it, and equipment manufacturers are unwilling to label it.

[0015] 4) Poor applicability. CFP is suitable for evaluating non-energy-consuming equipment, because the life cycle carbon emissions of non-energy-consuming equipment are basically determined when leaving the factory, and the carbon emissions during the use phase are small. However, equipment products are energy-consuming products, and the carbon emissions that have occurred when leaving the factory account for a small proportion of the life cycle carbon emissions, while the carbon emissions during the use phase account for a large proportion. For example, the use phase of washing machines accounts for about 75%.

[0016] 2. Emission reduction is the difference between the carbon emission of the product and the carbon emission baseline value, which is also carbon emission in essence. The same problems as 1-3 mentioned above exist when using emission reduction to evaluate the low-carbon performance of equipment. Emission reduction is suitable for evaluating the emission reduction effect of low-carbon technology applied by the project or organization, but it is not suitable for evaluating the low-carbon performance of products. Summary of the invention

[0017] One of the purposes of the present invention is to provide a method for measuring the carbon efficiency ratio of a washing machine, which takes into account both the total carbon emissions of the product and the functional contribution of the product, and apportions the carbon emissions to each functional unit through a ratio, which is scientific and reasonable.

[0018] The above-mentioned object of the present invention is achieved by the following technical solution: a method for measuring the carbon efficiency ratio of a washing machine, characterized in that the method is calculated by the following formula:

[0019]

[0020] Where:

[0021] CER - washing machine carbon efficiency ratio, that is, the carbon dioxide equivalent (CO2) emitted by the washing machine per unit of laundry. 2e ), unit: kg CO 2e / kg;

[0022] CFP—Carbon footprint of washing machine, which is based on the life cycle assessment of washing machine, in carbon dioxide equivalent (CO 2e ) represents the total greenhouse gas carbon emissions from the washing machine system, unit: kg CO 2e ;

[0023] TFU—Total functional units of the washing machine, i.e. the total amount of laundry washed during the service life of the washing machine, unit: kg.

[0024] In the present invention, the carbon footprint of the washing machine includes the carbon emissions in the raw material acquisition stage, the manufacturing stage, the transportation stage and the use stage of the washing machine. The carbon footprint of the washing machine is calculated by the following formula:

[0025] CFP=CFP material +CFP produce +CFP transport +CFP use

[0026] Where:

[0027] CFP—Carbon footprint of washing machine, unit: kgCO 2e ;

[0028] CFP material —Total carbon emissions from the acquisition of washing machine raw materials, unit: kgCO 2e ;

[0029] CFP produce —Total carbon emissions during the manufacturing phase of washing machines, in kgCO 2e ;

[0030] CFP transport —Total carbon emissions during the transportation of the washing machine, in kgCO 2e ;

[0031] CFP use —Total carbon emissions during the use of washing machines, unit: kgCO2e ;

[0032] The carbon emissions from the raw material acquisition stage, the manufacturing stage, the transportation stage and the use stage of the washing machine are all calculated in accordance with the method specified in ISO 14067.

[0033] Carbon emissions generated by the resources and energy consumed in the extraction and manufacturing process of raw materials. The data is collected based on the product bill of materials (BOM), and the material, quality, quantity, etc. of each product component are collected.

[0034] In the present invention, the total carbon emissions during the raw material acquisition stage of the washing machine are calculated by the following formula:

[0035]

[0036] Where:

[0037] CFP material —Total carbon emissions from the acquisition of washing machine raw materials, unit: kgCO 2e ;

[0038] CFP i，material —Carbon emissions generated during the extraction and manufacturing process of the i-th raw material, unit: kgCO 2e ;

[0039] m—the number of types of raw materials contained in the washing machine;

[0040] The manufacturing stage includes but is not limited to information on the following processes:

[0041] Resource and energy consumption in the production process of product parts;

[0042] Resource and energy consumption during product assembly;

[0043] Resources and energy consumption during the transportation of product parts or complete machines within workshops and factories;

[0044] Provide necessary production process flow chart.

[0045] The total carbon emissions during the manufacturing phase of the washing machine are calculated using the following formula:

[0046]

[0047] Where:

[0048] CFP produce —Total carbon emissions during the manufacturing phase of washing machines, in kgCO 2e ;

[0049] FCi，produce —Energy consumption of category i in the manufacturing stage (such as diesel and natural gas), in kg or m 3 ;

[0050] CEF i，produce —Carbon emission coefficient of the i-th energy source, unit: kgCO 2e / kg or kgCO 2e / m 3 ;

[0051] n—the number of types of energy (such as diesel and natural gas) consumed during the production and manufacturing stage;

[0052] PC produce —Power consumption during the manufacturing phase, in kWh;

[0053] PEF—electricity emission factor, unit: kgCO 2e / kWh;

[0054] The transportation stage refers to the resource and energy consumption during the transportation of the entire product from the factory to distributors in various locations.

[0055] The total carbon emissions during the transportation phase of the washing machine are calculated using the following formula:

[0056]

[0057] Where:

[0058] CFP transport —Total carbon emissions during the transportation of the washing machine, in kgCO 2e ;

[0059] FC i，transport —Energy consumption of the i-th category during the transport phase (such as diesel and natural gas), in kg or m 3 ;

[0060] p—the number of types of energy (such as diesel and natural gas) consumed during the transportation stage;

[0061] CEF i，transport —Carbon emission coefficient of the i-th energy source, unit: kgCO 2e / kg or kgCO 2e / m 3 ;

[0062] PC transport —Power consumption during the transportation phase, in kWh;

[0063] The carbon emissions during the use phase come from electricity consumption. The test is carried out according to the method specified in GB 12021.4, and the power consumption and water consumption of the washing machine during its working cycle are calculated. Then, the total power consumption during the use phase is determined based on the service life of the washing machine and the annual frequency of household use.

[0064] The total carbon emissions during the use phase of the washing machine are calculated using the following formula:

[0065] CFP use =PC use ×PEF+PW use ×PWF

[0066] Where:

[0067] CFP use —Total carbon emissions during the use of washing machines, unit: kgCO 2e ;

[0068] PC use —Power consumption of the washing machine during use, in kWh;

[0069] PEF—electricity emission factor, unit: kgCO 2e / kWh;

[0070] PW use —Water consumption during the use phase of the washing machine, in kg;

[0071] PWF—water emission factor, unit: kgCO 2e / kg;

[0072] The formula for calculating the power consumption of the washing machine during the use phase is as follows:

[0073] PC use =EEC×C×L

[0074] Where:

[0075] EEC - power consumption during working cycle, unit: kWh;

[0076] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0077] L——the service life of the washing machine, usually 8, in years.

[0078] The formula for calculating the water consumption during the use phase of the washing machine is as follows:

[0079] PW use =EWC×C×L

[0080] Where:

[0081] EWC——water consumption during working cycle, unit: kg;

[0082] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0083] L——the service life of the washing machine, usually 8, in years.

[0084] In the present invention, the calculation formula for the sum of the functional units of the washing machine is as follows:

[0085] TFU=V×C×L

[0086] Where:

[0087] TFU——Total weight of clothes in the washing machine, unit: kg;

[0088] V——Rated washing capacity of washing machine, unit: kg;

[0089] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0090] L——the service life of the washing machine, usually 8, in years.

[0091] The second purpose of the present invention is to provide a method for evaluating the low-carbon performance of a washing machine, which can truly reflect the level of low-carbon technology.

[0092] The above-mentioned object of the present invention is achieved by the following technical solution: a method for evaluating the low-carbon performance of a washing machine using a carbon efficiency ratio, wherein the evaluation criteria of the method are as follows:

[0093] For drum washing machines, the carbon efficiency ratio is less than 0.08kgCO 2e / kg, the product is judged as a low-carbon product;

[0094] For pulsator washing machines, the carbon efficiency ratio is less than 0.02kgCO 2e / kg, the product is judged as a low-carbon product.

[0095] The present invention is directed to washing machines, and is also applicable to washing machines used in public places.

[0096] The terms used in this application are defined in GB / T 24040 and GB / T 24044.

[0097] It refers to a product whose carbon emission data meets the low-carbon evaluation index requirements of similar products or products with the same functions.

[0098] Carbon footprint of a product (CFP)

[0099] The sum of greenhouse gas emissions in a product system expressed in carbon dioxide equivalent (CO2e) based on a life cycle assessment.

[0100] functional unit

[0101] Used as a benchmark unit to quantify product system performance, source: GB / T 24044-2008, 3.20.

[0102] Total functional units

[0103] The total amount of laundry washed during the life of the washing machine, unit: kg.

[0104] Washing machine carbon efficiency ratio

[0105] The carbon dioxide equivalent emitted by a washing machine when washing a unit of clothing, unit: kgCO2e / kg.

[0106] The carbon efficiency ratio measurement method of the washing machine of the present invention not only takes into account the total carbon emissions of the product, but also the functional contribution of the product, and apportions the carbon emissions to each functional unit through the ratio, which is scientific and reasonable. At the same time, the low-carbon performance evaluation method of the washing machine through the carbon efficiency ratio can evaluate the low-carbon performance of the product and truly reflect the level of low-carbon technology. The present invention has the characteristics of clear definition, easy to understand, strong applicability, etc., and has significant application value in evaluating the low-carbon performance of energy-consuming products.

[0107] Compared with the prior art, the present invention has the following significant effects:

[0108] 1. Adequate disclosure of information: The carbon efficiency ratio takes into account both the total carbon emissions of the product and the functional contribution of the product. It allocates carbon emissions to each functional unit through a ratio, and the difference in low-carbon levels can be seen immediately.

[0109] 2. Correct value orientation: Carbon efficiency is not proportional to product life. On the contrary, when other parameters are the same, the longer the product life, the smaller the carbon efficiency, which is in line with common sense of resource utilization.

[0110] 3. Manufacturers are willing to cooperate: Compared with carbon footprint, manufacturers are more willing to use carbon efficiency ratio to express the low-carbon performance of energy-consuming equipment. The industry also has such "ratio" type technical parameters, such as: fuel consumption per 100 kilometers, energy efficiency ratio, and electricity conversion rate.

[0111] 4. Applicability: Carbon efficiency is applicable to the evaluation of energy-consuming products. The low-carbon performance of products whose efficacy can be quantified is especially true for products that continuously consume energy during the use phase. Under the condition that the carbon efficiency remains unchanged, the more the product is used, the more carbon emissions will be, which is easy to accept. BRIEF DESCRIPTION OF THE DRAWINGS

[0112] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0113] Figure 1 It is a boundary diagram of the carbon footprint system of the washing machine of the present invention. DETAILED DESCRIPTION

[0114] The carbon efficiency ratio measuring method of a washing machine and the low carbon performance evaluation method of a washing machine of the present invention are as follows:

[0115] 1. Evaluation object: 1 washing machine product.

[0116] 2. Product Carbon Footprint

[0117] 2.1 Product Information

[0118] Product information is shown in Table 1 below:

[0119] Table 1: Product information list

[0120]

[0121] 2.2 System Boundary

[0122] 1. The inputs of this product system are: raw materials, energy, and fuel; the outputs are: washing machines, carbon emissions, and waste, all of which are basic flows;

[0123] 2. For this product, the main stage of its carbon footprint is the carbon dioxide emissions caused by electricity consumption during the "user use" stage; therefore, this report will focus on the analysis of the "user use" stage;

[0124] 3. The carbon footprint of the product during the "user use" stage will be evaluated from two perspectives. One is to convert the annual electricity consumption and water consumption based on the energy consumption indicators tested in the laboratory, and make an estimate based on the designed service life; the other is to conduct an on-site test of the product once a year in the future, and adjust the estimated annual electricity consumption and water consumption based on the actual measured values ​​to achieve carbon footprint tracking.

[0125] 4. The designed service life of the product is 8 years. As for the recycling stage after the end of the service life of the product, it is impossible to predict the development level of the recycling methods and technologies used 8 years later and it is impossible to provide a detailed recycling plan. Therefore, this report does not take the recycling stage of the product into consideration. Please note this.

[0126] 2.3 Data Quality Analysis

[0127] 2.3.1 Data sources:

[0128] The data list for the raw material acquisition stage, product manufacturing stage, and transportation stage of this application shall be provided by the enterprise. The product energy efficiency information for calculating carbon emissions during the use stage shall be provided by the enterprise.

[0129] 2.3.2 Principles for data selection in the raw material acquisition stage:

[0130] a) The auxiliary material mass is less than 0.1% of the total raw material consumption;

[0131] b) General solid waste that accounts for less than 1% of the total solid waste discharge;

[0132] c) Auxiliary materials, raw materials, and parts that are less than 1% of the product weight and are not made of rare precious metals or high-purity substances

[0133] Item

[0134] d) Auxiliary materials, raw materials and parts that are less than 0.1% of the product weight and are made of rare and precious metals or high-purity substances.

[0135] The combined weight of the input and output auxiliary materials, raw materials and parts ignored above shall not exceed 5% of the product weight.

[0136] 2.3.3 Secondary data using life cycle inventory database data

[0137] The evaluation tool used in this report is based on the German GaBi software. Data source:

[0138] 1) my country's power emission factors are derived from the General Office of the Ministry of Ecology and Environment's "Notice on Doing a Good Job in Key Tasks Related to the Management of Corporate Greenhouse Gas Emission Reports in 2022" (Ministry of Ecology and Environment Climate Letter (2022) No. 111);

[0139] 2) The GWP index (characterization factor) comes from the 2007 report of the Intergovernmental Panel on Climate Change (IPCC);

[0140] 3) The raw material calculation data comes from the German GaBi software database.

[0141] 2.4 Carbon Footprint Assessment Checklist

[0142] 2.4.1 Raw material acquisition stage

[0143] According to the data provided by the enterprise, the list of the product's "raw materials", "manufacturing" and "user use" stages is shown in Tables 2 to 4.

[0144] Table 2: List of raw materials and parts

[0145]

[0146]

[0147]

[0148] Note: According to the exclusion principle, if the information of a certain component is not available, the raw material with a weight ratio of less than 1% can be excluded, but the total exclusion amount shall not exceed 5%.

[0149] Table 3: Consumption list of manufacturing stage

[0150]

[0151]

[0152] Table 4: Use phase list

[0153]

[0154] 3Carbon Footprint Impact Assessment

[0155] 3.1 Life cycle influencing factors

[0156] The carbon footprint of this product at each stage, including raw material consumption, energy consumption, greenhouse gas emissions and other influencing factors are shown in Table 5.

[0157] Table 5: Factors affecting product carbon footprint

[0158]

[0159] 3.2 Raw material stage

[0160] The data on carbon dioxide emissions from the production of raw materials for this product is calculated based on the type of raw materials, usage and GaBi software. The carbon emissions in the raw materials stage are 354.4227kgCO2e.

[0161] 3.3 Manufacturing stage

[0162] Carbon emissions during the product manufacturing phase come from the electricity consumption of production and assembly equipment. The carbon emissions generated by electricity consumption are calculated based on the national average electricity production (grid) emission factor announced by the Ministry of Ecology and Environment. The corresponding carbon emissions from diesel are calculated in combination with the carbon emission coefficient. See Table 6 for a detailed analysis.

[0163] Table 6: Carbon emissions during the manufacturing phase

[0164]

[0165] Note: The national average electricity production (grid) emission factor is 0.5810tCO2 / MWh (Ministry of Ecology and Environment); the carbon emission factor of water is 1.85kgCO2 / m 3 L.

[0166] 3.4 User Usage Stage

[0167] For washing machines, carbon emissions during their use account for a large proportion of the entire life cycle, and carbon emissions in this stage come from electricity consumption and water consumption. Tests are conducted in accordance with the method specified in GB / T 4288-2018 to calculate the power consumption and water consumption of washing machines, and then the total power consumption and water consumption during the use phase are determined based on the frequency of use and service life of the washing machine.

[0168] CFP use =PC use ×PEF+PW use ×PWF

[0169] Where:

[0170] CFP use —Total carbon emissions during the use of washing machines, unit: kgCO 2e ;

[0171] PC use —Power consumption of the washing machine during use, in kWh;

[0172] PEF—electricity emission factor, unit: kgCO 2e / kWh;

[0173] PW use —Water consumption during the use phase of the washing machine, in kg;

[0174] PWF—water emission factor, unit: kgCO 2e / kg;

[0175] The formula for calculating the power consumption of the washing machine during the use phase is as follows:

[0176] PC use =EEC×C×L

[0177] Where:

[0178] EEC - power consumption during working cycle, unit: kWh;

[0179] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0180] L——the service life of the washing machine, usually 8, in years.

[0181] The formula for calculating the water consumption during the use phase of the washing machine is as follows:

[0182] PW use =EWC×C×L

[0183] Where:

[0184] EWC——water consumption during working cycle, unit: kg;

[0185] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0186] L——the service life of the washing machine, usually 8, in years.

[0187] According to the standard and the test data provided by the enterprise, it is calculated that the power consumption of the product evaluated in this evaluation cycle is 0.8kWh, the water consumption of the working cycle is 68L, the annual power consumption is 208kWh, and the annual water consumption is 17680L. The service life is 8 years, the total power consumption is 1664kWh, and the water consumption is 141440L. The carbon emissions generated during the use process are calculated based on the national average power production (grid) emission factor announced by the Ministry of Ecology and Environment, as shown in Table 7.

[0188] Table 7: Carbon emissions during the user use phase

[0189]

[0190] Note: The national average electricity production (grid) emission factor is 0.5810tCO2 / MWh (Ministry of Ecology and Environment).

[0191] Explanation of differences in assumptions for the “use phase”: Since the assumptions in this use phase have a significant impact on the carbon footprint results, this report specifically states that the carbon footprint of the use phase calculated in this report is based on the value calculated based on relevant national product standards, which may differ from the carbon footprint during actual use.

[0192] 3.5 Product Transportation Stage

[0193] The data for the product transportation stage adopts the distance distribution principle, and the carbon emissions of a single washing machine during the transportation stage are calculated based on the transportation tool being a truck with a rated load of 10t and an average transportation mileage of 1,000km.

[0194] Table 8: Carbon emissions during transportation

[0195]

[0196]

[0197] The total carbon emissions during the transportation phase are calculated using the following formula:

[0198]

[0199] Where:

[0200] CFP transport —Total carbon emissions during the transportation of the washing machine, in kgCO2e;

[0201] FC i，transport —Consumption of the i-th type of energy (diesel in this case) during the transport phase, in kg;

[0202] q—the number of types of energy consumed in the transportation stage;

[0203] CEF i，transport —Carbon emission coefficient of the i-th energy source (diesel here), unit: kgCO2e / kg;

[0204] PC transport —Power consumption during the transportation phase, in kWh;

[0205] Calculation shows that the total carbon emissions during the transportation stage are 28.69kgCO2e.

[0206] 3.6 Summary of Carbon Footprint at Each Stage

[0207] The carbon emissions during the user use phase are summarized in Table 9.

[0208] Table 9: Summary of product carbon footprint

[0209]

[0210] 1. Total of product functional units

[0211] The functional unit for evaluating the low-carbon performance of a washing machine is “the weight of the laundry”.

[0212] The calculation formula for the sum of the functional units of the washing machine is as follows:

[0213] TFU=V×C×L

[0214] Where:

[0215] TFU——Total weight of clothes in the washing machine, unit: kg;

[0216] V——Rated washing capacity of washing machine, unit: kg;

[0217] C——Number of times the washing machine is used in a year, take 260, unit: times;

[0218] L——the service life of the washing machine, usually 8, in years.

[0219] Through calculation, the total weight of the functional units of the electric washing machine is 24960kg.

[0220] 2. Carbon efficiency

[0221] The carbon efficiency ratio of a washing machine is the quotient of the carbon footprint and the sum of the functional units, according to the formula

[0222]

[0223] By calculation, the carbon efficiency ratio of the washing machine is 0.05855kgCO 2e / kg, which is lower than the limit of 0.08kgCO specified in JSGF CVC214-2023 2e / kg.

[0224] 3. Low carbon performance evaluation

[0225] The evaluation object is a 12kg drum washing machine, and the carbon efficiency ratio evaluation value of the low-carbon product is 0.08kg CO 2e / kg. Since the carbon efficiency ratio of the washing machine is 0.059kg CO 2e / kg, which is less than the low-carbon product evaluation value, meets the low-carbon product evaluation requirements, and the evaluation result is "qualified".

[0226] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for measuring carbon efficiency ratio of a washing machine, characterized in that: This measurement method is calculated using the following formula: Where: CER—Carbon Efficiency Ratio of Washing Machine, which is the carbon dioxide equivalent emitted by the washing machine per unit of laundry, unit: kgCO 2e / kg; CFP—Carbon footprint of washing machine, that is, the total amount of greenhouse gas carbon emissions in the washing machine system expressed in carbon dioxide equivalent based on the life cycle assessment of the washing machine, unit: kgCO 2e ; TFU—Total functional units of the washing machine, i.e. the total amount of laundry washed during the service life of the washing machine, unit: kg.

2. The method for measuring carbon efficiency ratio of a washing machine according to claim 1, characterized in that: The carbon footprint of the washing machine includes the carbon emissions during the raw material acquisition stage, the manufacturing stage, the transportation stage, and the use stage of the washing machine. The carbon footprint of the washing machine is calculated using the following formula: CFP=CFP material +CFP produce +CFP transport +CFP use Where: CFP—Carbon footprint of washing machine, unit: kgCO 2e ; CFP material —Total carbon emissions from the acquisition of washing machine raw materials, unit: kgCO 2e ; CFP produce —Total carbon emissions during the manufacturing phase of washing machines, unit: kgCO 2e ; CFP transport —Total carbon emissions during the transportation of the washing machine, in kgCO 2e ; CFP use —Total carbon emissions during the use of washing machines, unit: kgCO 2e .

3. The method for measuring carbon efficiency ratio of a washing machine according to claim 2, characterized in that: The total carbon emissions during the raw material acquisition phase of the washing machine are calculated using the following formula: Where: CFP material —Total carbon emissions from the acquisition of washing machine raw materials, unit: kgCO 2e ; CFP i，material —Carbon emissions generated during the extraction and manufacturing process of the i-th raw material, unit: kgCO 2e ; m—the number of types of raw materials contained in the washing machine; The total carbon emissions during the manufacturing phase of the washing machine are calculated using the following formula: Where: CFP produce —Total carbon emissions during the manufacturing phase of washing machines, unit: kgCO 2e ; FC i，produce —Energy consumption of category i in the manufacturing stage, in kg or m 3 ; CEF i，produce —Carbon emission coefficient of the i-th energy source, unit: kgCO 2e / kg or kgCO 2e / m 3 ; n—the number of types of energy consumed in the production and manufacturing stage; PC produce —Power consumption during the manufacturing phase, in kWh; PEF—electricity emission factor, unit: kgCO 2e / kWh; The total carbon emissions during the transportation phase of the washing machine are calculated using the following formula: Where: CFP transport —Total carbon emissions during the transportation of the washing machine, in kgCO 2e ; FC i，transport —Energy consumption of category i during the transport phase, in kg or m 3 ; p—the number of types of energy consumed in the transportation stage; CEF i，transport —Carbon emission coefficient of the i-th energy source, unit: kgCO 2e / kg or kgCO 2e / m 3 ; PC transport —Power consumption during the transportation phase, in kWh; The total carbon emissions during the use phase of the washing machine are calculated using the following formula: CFP use =PC use ×PEF+PW use ×PWF Where: CFP use —Total carbon emissions during the use of washing machines, unit: kgCO 2e ; PC use —Power consumption of the washing machine during use, in kWh; PW use —Water consumption during the use phase of the washing machine, in kg; PWF—water emission factor, unit: kgCO 2e / kg; Among them, the calculation formula for the power consumption of the washing machine during the use phase is as follows: PC use =EEC×C×L Where: EEC - power consumption during working cycle, unit: kWh; C——Number of times the washing machine is used in a year, take 260, unit: times; L——the service life of the washing machine, generally 8, in years; The formula for calculating the water consumption during the use phase of the washing machine is as follows: PW use =EWC×C×L Where: EWC——water consumption in working cycle, unit: kg.

4. The method for measuring carbon efficiency ratio of a washing machine according to claim 3, characterized in that: The calculation formula for the sum of the functional units of the washing machine is as follows: TFU=V×C×L Where: TFU——Total weight of clothes in the washing machine, unit: kg; V——rated washing capacity of the washing machine, unit: kg.

5. A method for evaluating the low carbon performance of a washing machine using the carbon efficiency ratio obtained by the measurement method according to claim 4, wherein the evaluation criteria of the method are as follows: For drum washing machines, the carbon efficiency ratio is less than 0.08kgCO 2e / kg, the product is judged as a low-carbon product; For pulsator washing machines, the carbon efficiency ratio is less than 0.02kgCO 2e / kg, the product is judged as a low-carbon product.

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