Method for calculating the emission reduction amount brought by waste air conditioner refrigerant recovery

Abstract

The application discloses a kind of computing method of the reduction quantity of waste air conditioner refrigerant recovery, and the reduction quantity ER of waste air conditioner refrigerant recovery is calculated by the difference between the carbon emission BE of recovery refrigerant scenario baseline and the carbon emission PE of carbon reduction behavior, the carbon emission BE of recovery refrigerant scenario baseline is calculated by the mass of the i-th refrigerant and the emission factor of the i-th refrigerant escape, and the carbon emission of waste refrigerant recovery and transportation is much smaller than the carbon emission of refrigerant escape, so the carbon emission PE of carbon reduction behavior is valued as 0 when calculating.The computing method of the application is aimed at the application scenario of recycling waste air conditioner refrigerant, and the data detection is scientific and efficient, which can quantitatively obtain the reduction quantity of waste air conditioner refrigerant recovery, and provide data support for energy saving and environmental protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of project emission reduction quantity accounting, in particular to a calculation method of emission reduction quantity brought by waste air conditioner refrigerant recovery. BACKGROUND

[0002] At present, the calculation methods of project emission reduction quantity mainly include the following:

[0003] (1) General requirements for project emission reduction quantity calculation

[0004] In China, the typical case of general requirements for project emission reduction quantity calculation is GB / T 33760-2017 "Technical Specification for Greenhouse Gas Emission Reduction Assessment Based on Project-General Requirements", which clearly defines the terminology definition, basic principles, methods and requirements of emission reduction calculation. This document proposes the calculation criteria for project emission reduction, including but not limited to: the principles and related contents for determining project boundary, identifying greenhouse gas sources, data acquisition, emission reduction calculation, project monitoring, data quality management, etc. Another type is the compilation outline of national certified voluntary emission reduction (CCER) methodology and carbon favor methodology. These documents add additionality, favorability and other aspects of demonstration based on GB / T 33760-2017, mainly used to guide the compilation of carbon market related methodologies.

[0005] (2) Specific emission reduction project calculation methods

[0006] On October 24, 2023, the Ministry of Ecology and Environment released four greenhouse gas voluntary emission reduction project methodologies, including "Afforestation Carbon Sink Methodology", "Grid-connected Photovoltaic Thermal Power Generation Methodology", "Grid-connected Offshore Wind Power Generation Methodology", and "Mangrove Cultivation Methodology".

[0007] Guangdong Province and other places have also released "Guangdong Province Carbon Favor Methodology for Installing Distributed Photovoltaic Power Generation Systems", "Guangdong Province Carbon Favor Methodology for Waste Clothing Recycling", and other emission reduction project methodologies.

[0008] These methodologies provide detailed application conditions, project boundaries, carbon emission sources, accounting methods, and data management requirements for project implementation and monitoring according to the characteristics of the project.

[0009] The general requirements for project emission reduction quantity calculation do not propose specific application conditions, project boundaries, accounting methods, etc. for waste air conditioner refrigerant recovery projects, which are not operational.

[0010] The greenhouse gas types involved in the afforestation carbon sink methodology, the grid-connected photo-thermal power generation methodology, the grid-connected offshore wind power generation methodology, the mangrove forest cultivation methodology, the Guangdong Province distributed photovoltaic power generation system installation carbon benefit methodology, and the Guangdong Province waste clothing recycling carbon benefit methodology are mainly CO2, which is different from the greenhouse gas type involved in the present application, which is only hydrofluorocarbons (HFCs), and the behaviors of afforestation, photovoltaic power generation, and waste clothing incineration power generation are completely different from the recycling of waste air conditioners. SUMMARY

[0011] The present application aims to provide a calculation method for the emission reduction amount brought by the recycling of waste air conditioner refrigerants.

[0012] The above-mentioned object of the present application is achieved by the following technical solution: a calculation method for the emission reduction amount brought by the recycling of waste air conditioner refrigerants, characterized in that the emission reduction amount ER brought by the recycling of waste air conditioner refrigerants is calculated by the following formula:

[0013] ER = BE - PE (1)

[0014] In the formula:

[0015] ER is the emission reduction amount brought by the recycling of waste air conditioner refrigerants, with the unit of kgCO 2e ;

[0016] BE is the baseline carbon emission amount of the recycling refrigerant scenario, with the unit of kgCO 2e ;

[0017] PE is the carbon emission amount of the carbon emission reduction behavior, with the unit of kgCO 2e ;

[0018] The baseline carbon emission amount BE of the recycling refrigerant scenario is calculated by the following formula:

[0019]

[0020] In the formula:

[0021] BE is the baseline carbon emission amount of the recycling refrigerant scenario, with the unit of kgCO 2e ;

[0022] A i is the mass of the recycled i-th refrigerant, with the unit of kg;

[0023] F i is the emission factor of the i-th refrigerant, with the unit of kgCO2e / kg;

[0024] n is the number of refrigerant types;

[0025] wherein A i = m x C i

[0026] m is the mass of refrigerant mixed gas sent to centralized harmless treatment, in kg;

[0027] C i is the mass concentration of the i-th refrigerant in the refrigerant mixed gas, expressed in percentage;

[0028] Since the baseline carbon emission BE of the recovered refrigerant scenario is calculated only when the recovered refrigerant reaches the harmless treatment enterprise, the leakage of waste refrigerant during recovery and transportation can not be taken into account, and the carbon emission of waste refrigerant recovery and transportation is much smaller than the carbon emission of refrigerant emission, so the carbon emission PE of the carbon reduction behavior is 0 when calculating, and the emission reduction ER brought by the recovery of waste air conditioner refrigerant is equal to the baseline carbon emission BE of the recovered refrigerant scenario, which is directly calculated by formula (2).

[0029] In the present application, the terms and definitions involved are as follows:

[0030] Carbon reduction behavior: refers to the low-carbon behavior of reducing greenhouse gas emissions and increasing green carbon sinks voluntarily implemented by individuals, institutions, groups and enterprises within a certain region. The carbon reduction behavior involved in this methodology refers to the behavior of individuals, institutions, groups and enterprises recovering waste air conditioner refrigerant to replace direct emission of refrigerant.

[0031] Greenhouse gas emission: refers to the release of greenhouse gases into the atmosphere within a certain period of time. The main types of greenhouse gases involved in this methodology are hydrofluorocarbons (HFCs), including refrigerants R410A, R22, R32, etc.

[0032] Baseline scenario: refers to the most realistic and feasible scenario without the carbon reduction behavior.

[0033] Baseline emission: refers to the greenhouse gas emission occurring in the baseline scenario.

[0034] Carbon reduction behavior emission: refers to the greenhouse gas emission produced in the carbon reduction behavior scenario.

[0035] In the present application, the baseline scenario is set as follows: when the waste air conditioner does not undergo refrigerant recovery, the refrigerant is directly emitted into the atmosphere.

[0036] The emission reduction mechanism of the carbon reduction behavior of waste air conditioner refrigerant recovery is as follows: compared with the baseline scenario, the carbon emission brought by the recovered refrigerant is lower than that of direct emission of refrigerant, thereby reducing the greenhouse effect caused by the emission of hydrofluorocarbons (HFCs).

[0037] Compared with the direct emission of refrigerant, the carbon emission of fossil fuel combustion and refrigerant extraction electricity generated by the boundary transport vehicle is very low, only 0.119% of the former, that is, the carbon emission of the abandoned refrigerant recovery and transportation is much smaller than the carbon emission of the refrigerant escape, therefore, the baseline emission is measured by the harmless treatment enterprise, the leakage in the process of refrigerant recovery and transportation can not be counted, and the carbon emission PE of the carbon emission reduction behavior can be taken as 0 when calculating.

[0038] Table 1: Refrigerant carbon emission of recycling 1 air conditioner with refrigerant R22 and 1 kg of charging capacity

[0039]

[0040]

[0041] As can be seen from Table 1, the carbon emission of the abandoned refrigerant recovery and transportation is much smaller than the carbon emission of the refrigerant escape, therefore, it is appropriate to take the carbon emission PE of the carbon emission reduction behavior as 0 when calculating.

[0042] In the application, the number n of the types of refrigerants is 1 or 2 or 3 or 4 or 5.

[0043] In the application, the refrigerant is refrigerant R22 or refrigerant R32 or refrigerant R125 or refrigerant R410A or refrigerant R134a; wherein the chemical molecular formula of the refrigerant R22 is CHClF2; the chemical molecular formula of the refrigerant R32 is CH2F2; the chemical molecular formula of the refrigerant R125 is CHF2CF3; the refrigerant R410A is a combined refrigerant, and the chemical composition components are refrigerant R32 and refrigerant R125, each accounting for 50% of the mass; the chemical molecular formula of the refrigerant R134a is CH2FCF3.

[0044] In the application, the air conditioner includes a household air conditioner and an industrial and commercial air conditioner. The household air conditioner includes a household room air conditioner, a unit air conditioning unit and a multi-connected air conditioning unit using hydrofluorocarbon (HFC) refrigerant. The industrial and commercial air conditioner includes an industrial and commercial unit air conditioning unit, a multi-connected air conditioning unit, an air source heat pump unit, a water source heat pump unit and a cold water unit using hydrofluorocarbon (HFC) refrigerant.

[0045] Currently, there is no carbon reduction amount calculation method related to hydrofluorocarbon (HFC) recovery, compared with the prior art, the application has the following remarkable effects:

[0046] (1) The escape emission of hydrofluorocarbon (HFC) can be reduced, and the direct emission of greenhouse gas can be reduced;

[0047] (2) saving the consumption of hydrofluorocarbons and the energy consumption in the production process of hydrofluorocarbons;

[0048] (3) driving the waste air conditioner to flow into a regular disassembly treatment channel;

[0049] (4) guiding the public to establish resource recycling and green low-carbon consciousness.

[0050] The calculation method of the application is scientific and reasonable in operation, and can be used for calculation of national certified voluntary emission reduction (CCER) and carbon offset item emission reduction. DETAILED DESCRIPTION

[0051] In the calculation method of the waste air conditioner refrigerant recovery emission reduction amount of the application, the refrigerant is 3 kinds of mixed refrigerant, which is R22, R32 and R125 respectively, the mass m of the refrigerant mixed gas is 920 kg, and the mass concentration and emission factor of the three kinds of refrigerant are shown in Table 2:

[0052] Table 2: Mass concentration and emission factor of three kinds of refrigerant

[0053]

[0054] The recovery refrigerant scenario baseline carbon emission amount BE is calculated by formula (2):

[0055]

[0056] In the formula:

[0057] BE is the recovery refrigerant scenario baseline carbon emission amount, and the unit is kgCO 2e ;

[0058] A i is the mass of the recovered i-th refrigerant, and the unit is kg;

[0059] F i is the emission factor of the i-th refrigerant, and the unit is kgCO2e / kg;

[0060] n is the number of types of refrigerants, and n is 3;

[0061] m is the mass of the refrigerant mixed gas sent to centralized harmless treatment, and the unit is kg;

[0062] C i is the mass concentration of the i-th refrigerant in the refrigerant mixed gas, expressed by percentage;

[0063] The data in Table 2 is brought into formula (2), and the calculation result is

[0064] BE = 920 x 70% x 1810 + 920 x 10% x 675 + 920 x 10% x 3500

[0065] = 1165640 + 62100 + 322000

[0066] = 1549740 kgCO2e

[0067] The emission reduction ER caused by the waste air conditioner refrigerant recovery is calculated by formula (1):

[0068] ER = BE - PE (1)

[0069] Since the carbon emission of waste refrigerant recovery and transportation is far less than the carbon emission of refrigerant emission, the carbon emission BE of the carbon emission reduction behavior is taken as 0 when calculating, and the emission reduction ER caused by the waste air conditioner refrigerant recovery is equal to the baseline carbon emission BE of the refrigerant recovery scenario, which is 1549740 kgCO2e.

[0070] The above embodiments of the present application are not a limitation on the protection scope of the present application, and the embodiments of the present application are not limited thereto, and any other forms of modification, replacement or change of the above structure of the present application according to the above content of the present application, according to the ordinary technical knowledge and common means in the art, without departing from the above basic technical idea of the present application, should fall within the protection scope of the present application.

Claims

1. A method for calculating the emission reduction resulting from the recovery of refrigerant from waste air conditioners, characterized in that, The emission reduction ER resulting from the recycling of refrigerant from discarded air conditioners is calculated using the following formula: （1）； In the formula: ER represents the emission reduction from recycling refrigerant from waste air conditioners, expressed in kgCO. 2e ; BE represents the baseline carbon emissions under the refrigerant recovery scenario, expressed in kgCO. 2e ; PE represents carbon emissions from carbon reduction activities, expressed in kgCO. 2e ; The baseline carbon emissions (BE) for a refrigerant recovery scenario are calculated using the following formula: (2)； In the formula: BE represents the baseline carbon emissions under the refrigerant recovery scenario, expressed in kgCO. 2e ; A i The mass of refrigerant of type i recovered is expressed in kg. F i The emission factor for refrigerant of type i is expressed in kgCO2e / kg. n is the number of types of refrigerant, which can be 2, 3, 4, or 5; Among them, A i =m ×C i m represents the mass of the refrigerant mixture sent to the centralized harmless treatment facility, in kg. C i The mass concentration of the i-th type of refrigerant in the refrigerant mixture is expressed as a percentage. The baseline carbon emissions BE for refrigerant recovery scenario are calculated when the recovered refrigerant is delivered to the harmless treatment enterprise. Leakage of waste refrigerant during the recovery and transportation process is not included. The carbon emissions from the recovery and transportation of waste refrigerant are much smaller than the carbon emissions from refrigerant escaping. When calculating, the carbon emission reduction behavior carbon emission PE is taken as 0. The emission reduction ER brought about by the recovery of waste air conditioner refrigerant is equal to the baseline carbon emissions BE for refrigerant recovery scenario, which can be directly calculated by formula (2).

2. The method for calculating the emission reduction caused by the recycling of refrigerant from waste air conditioners according to claim 1, characterized in that: The refrigerant is refrigerant R22, refrigerant R32, refrigerant R125, refrigerant R410A, or refrigerant R134a; wherein, the chemical formula of refrigerant R22 is CHClF2; the chemical formula of refrigerant R32 is CH2F2; the chemical formula of refrigerant R125 is CHF2CF3; refrigerant R410A is a combined refrigerant, the chemical composition of which is refrigerant R32 and refrigerant R125 each account for 50% by mass; and the chemical formula of refrigerant R134a is CH2FCF3.

3. The method for calculating the emission reduction caused by the recycling of refrigerant from waste air conditioners according to claim 1, characterized in that: The air conditioners include household air conditioners and industrial / commercial air conditioners.

Images