96 results about "Global-warming potential" patented technology

The invention provides an Internet of Things system rigid-flex board full life cycle carbon footprint accounting method and device, and the method comprises the steps: carrying out the feature extraction according to carbon emission activity data, and generating carbon emission activity features; according to different life cycle stages, in combination with a carbon emission factor method, through a pre-trained carbon emission prediction model, prediction is carried out according to the carbon emission activity characteristics, and carbon emission prediction results corresponding to the life cycle stages are generated; and according to the carbon emission prediction result and the global warming potential value corresponding to the life cycle stage, generating a carbon footprint accounting result corresponding to the life cycle stage, thereby generating a full-life-cycle carbon footprint accounting report, and realizing accurate accounting of the full-life-cycle carbon footprint of the rigid-flex board. The carbon footprint is scientifically managed, the accuracy of carbon emission data is improved, meanwhile, the efficiency of carbon footprint accounting is improved, a real-time monitoring and early warning function is provided, and a transportation route is optimized to reduce carbon emission in the transportation process.

The invention discloses a power load carbon emission calculation method, and belongs to the technical field of power carbon emission calculation. Comprising the following steps: uploading basic data by a power load end, and carrying out energy consumption calculation on each power load system; selecting the most accurate carbon emission factor according to the basic data; and solving the optimal carbon emission factor for various energy sources of the power load system by adopting an improved grey wolf optimization algorithm. Or a main fuel emission factor default value method is adopted to replace a carbon emission factor to participate in calculation. And calculating the total carbon emission by considering the global warming potential value. According to the power load carbon emission calculation method, the power load carbon emission can be calculated by performing data acquisition and calculation on the energy consumption of different power load types and the renewable energy generating capacity and selecting the most accurate carbon emission factor. The method is suitable for calculating the carbon emission of various types of power loads, the calculation method and device are easy to implement, and good practicability is achieved.

The invention discloses a transformer operation stage carbon emission quantitative evaluation method and system, and belongs to the technical field of equipment carbon emission evaluation. The method comprises the steps that carbon emission sources of the transformer are determined, and the carbon emission sources comprise direct carbon emission and indirect carbon emission; aiming at indirect carbon emission, determining an electric energy loss value of the transformer within appointed time, and determining a carbon dioxide equivalent of electric power loss based on an electric power carbon dioxide emission factor; aiming at the direct carbon emission, determining the fault gas production rate of the transformer within the appointed time, and determining the carbon dioxide equivalent of the fault gas production based on the global warming potential value; and based on the power loss and the carbon dioxide equivalent of the fault produced gas, quantizing the carbon emission in the operation stage of the transformer within the specified time. According to the method, direct and indirect carbon emission of the transformer in the operation stage can be accurately quantified, and low-carbon transformation and green development of the power industry can be promoted.

A heat integration process and system for a chemical recycling facility is provided that can lower the carbon footprint and global warming potential of the facility. More particularly, one or more heat transfer media may be used to recover heat energy from a waste plastic pyrolysis effluent and redistribute the recovered heat energy throughout the chemical recycling facility. Furthermore, at least a portion of the pyrolysis oil produced by the pyrolysis process may be used to liquefy at least a portion of the waste plastics. Thus, the global warming potential of the chemical recycling facility may be optimized and lowered due to the heat integration process and system herein.

An air conditioning apparatus includes an outdoor unit, indoor units, a branch unit, and a heat medium circuit through which a heat medium having a global warming potential (GWP) lower than that of the refrigerant circulates. The heat medium circuit has a first pump, a second pump, a first heat exchanger, a second heat exchanger, a first branch header, a second branch header, a first merge header, a second merge header, first on-off valves, second on-off valves, third on-off valves, fourth on-off valves, a fifth on-off valve, a sixth on-off valve, a seventh on-off valve, an eighth on-off valve, a ninth on-off valve, and a tenth on-off valve disposed in the branch unit, a supply main pipe and a return main pipe connecting the branch unit to the outdoor unit, and supply branch pipes and return branch pipes connecting the branch unit to the respective indoor units.

An object is to provide a method for producing a magnetic disk that employs a fluorine-based solvent which has a low global warming potential and in which solubility of a high-polarity perfluoropolyether compound is excellent. This object is achieved by a method for producing a magnetic disk, the method including the step of applying, to a magnetic disk substrate, a lubricant solution containing a lubricant and a hydrofluoroether having a 100-year global warming potential value of less than 1000 and having a structure represented by the following Formula (A):where: Ra represents F, CF2-Re, or CF3; Rb represents O-Rd or C(-Rf)3; Rc represents H, F, or CF3; Re and Rd each independently represent a hydrocarbon group which may be partially substituted by a fluorine atom and each have a main chain in which at least one carbon atom may be replaced by an oxygen atom; and Rfs each independently represent H, F, or a hydrocarbon group that may be partially substituted by a fluorine atom, and the hydrocarbon group that may be partially substituted by the fluorine atom has a main chain in which at least one carbon atom may be replaced by an oxygen atom.

A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator, fluidically connected to form a refrigeration circuit. The system includes a refrigerant composition comprising an environmentally suitable chiller refrigerant having a 100-year direct global warming potential (GWP) of less than 150. The refrigerant composition includes a mixture comprising R-1336mzz-(Z) and R-1130-(E), wherein the amount of R-1336mzz-(Z) in the mixture is in a range of from or about 69% by weight to or about 81% by weight, and the amount of R-1130-(E) in the mixture is in a range of from or about 31% by weight to or about 19% by weight.

The invention discloses a halogenated hydrocarbon and heavy metal combined pollution natural attenuation life cycle benefit evaluation method, and belongs to the technical field of environmental science and engineering. The method comprises the following steps: constructing an MNA full-life-cycle system boundary, and establishing a list database including monitoring well network full-life-cycle operation and maintenance, long-term sampling analysis and natural attenuation asset accounting; establishing a biogeochemical coupling evaluation model, and introducing a coupling factor to quantify the synergistic environmental benefit of halogenated hydrocarbon anaerobic degradation and heavy metal reduction fixation; selecting global warming potential, primary energy consumption and secondary environment risk indexes to carry out characterization evaluation; a net environmental benefit (NEB) is calculated based on a time discount principle. According to the method, the ecological and economic comprehensive advantages of the MNA technology in the specific combined pollution area can be scientifically and quantitatively revealed, and a decision basis is provided for green restoration technology screening and long-term monitoring scheme optimization.

The invention provides a CNG filling station greenhouse gas leakage carbon emission accounting method, and belongs to the technical field of carbon emission accounting. Aiming at the characteristics that carbon emission sources of the CNG gas station are scattered and low in intensity, a carbon emission surface source diffusion model suitable for scattered point sources is created based on a gas diffusion model, and meanwhile, aiming at the characteristic that meteorological conditions of the gas station under actual working conditions are complex, the actual measurement data, model parameters and correction position information in different monitoring time periods are combined, so that the carbon emission surface source diffusion model is established. A time weighting method is adopted to carry out unit source intensity accounting on a surface source unit, the carbon emission intensity is determined based on the global warming potential, and finally, the carbon emission is accounting in combination with a carbon emission time period. The method not only can cope with sporadic carbon emission sources, but also can improve the accuracy of the accounting result under the condition of wind direction change, overcomes the limitation of the existing method under complex meteorological conditions, and provides data support and decision basis for the subsequent formulation of carbon emission reduction measures.

The invention discloses an environment-friendly compound gas extinguishing agent, and belongs to the technical field of extinguishing agents. Comprising a main fire extinguishing agent and an auxiliary agent which are uniformly mixed, wherein the main fire extinguishing agent is perfluoropentanone, and the auxiliary agent is selected from halogen olefin with the carbon atom number of 2-6. The compound gas fire extinguishing agent has efficient fire extinguishing performance and excellent environment-friendly performance, the ozone consumption potential (ODP) value is 0, and the global warming potential (GWP) value is smaller than 5. The boiling point of the compound gas fire extinguishing agent is obviously reduced compared with the boiling point of perfluorohexanone as an existing fire extinguishing agent, and the boiling point is reduced by about 20 DEG C at most, so that the compound fire extinguishing agent can be efficiently used in a low-temperature environment.

This invention discloses a method and system for quantitatively assessing carbon emissions during transformer operation, belonging to the technical field of equipment carbon emission assessment. The method includes: determining the sources of carbon emissions from the transformer, including direct and indirect carbon emissions; for indirect carbon emissions, determining the transformer's power loss value within a specified time period, and determining the carbon dioxide equivalent of the power loss based on the power carbon dioxide emission factor; for direct carbon emissions, determining the transformer's fault gas generation within the specified time period, and determining the carbon dioxide equivalent of the fault gas generation based on the global warming potential; and quantifying the carbon emissions during the transformer operation phase within the specified time period based on the power loss and the carbon dioxide equivalent of the fault gas generation. This invention can accurately quantify the direct and indirect carbon emissions of transformers during operation, and can promote the low-carbon transformation and green development of the power industry.

The invention discloses a method for examining greenhouse gases, and particularly relates to the technical field of greenhouse gases. The greenhouse gas interrogation method comprises the following steps: S1, setting a boundary range: setting a time boundary; organizing a boundary; reporting a boundary; s2, quantitative calculation of emission sources: calculating the greenhouse gas amount of each emission source by adopting an emission factor method, wherein the fixed / mobile combustion source / purchased power emission amount is equal to activity data * fuel emission factors; the domestic sewage CH4 discharge amount = annual BOD total amount * methane production factor; in the breeding process, the CH4 / N2O discharge amount of excrement is equal to the number of livestock and poultry * excrement management discharge factors; performing equivalent conversion by using a global warming potential (GWP) of a sixth evaluation report of the IPCC; s3, data quality management: establishing a 6-level quality scoring system of activity data and emission factors; calculating a data quality total score through a formula; and S4, management in the reference year. According to the greenhouse gas checking method provided by the invention, the calculation error of the discharge amount in the breeding process can be reduced, and the checking precision is improved.

The invention relates to the technical field of refrigerants, and particularly provides an environment-friendly refrigerant and a preparation method and a recovery system thereof. In order to solve the problems that a traditional refrigerant is high in global warming potential (GWP), large in degradation energy consumption and not matched with a novel catalyst, the refrigerant is hydrofluoroolefin containing beta-position C = C double bonds, the molecular general formula is CF3CF = CHR (R is H or F), the molecular size is smaller than or equal to 0.8 nm, and the refrigerant is specially designed for being matched with a mesoporous structure of a TNT-120 titanium dioxide nanotube, and adsorption-mass transfer optimization and photo-thermal synergistic degradation synergism are achieved. And a closed-loop solution from production to scrapping is provided for the novel refrigerant. The recycling system adopts a catalytic reactor of which the inner wall is loaded with a titanium dioxide nano coating, and the refrigerant is efficiently degraded under the conditions of low temperature (25-240 DEG C) and low light intensity (0.5-3W / cm < 2 >). The refrigerant has a GWPlt (GWPlt); the refrigerant has the advantages of being good in heat stability, low in degradation energy consumption, environmentally friendly in the whole life cycle and the like, is suitable for replacing a high-GWP refrigerant and meets the requirement for green refrigeration.

The invention belongs to the technical field of life cycle evaluation methods, relates to a method for quantifying full life cycle environmental influence of a plug-in hybrid electric vehicle, and is particularly suitable for accurately evaluating environmental benefits in a province popularization scene. According to the method, firstly, a target and a range are determined, wherein a function unit is set to enable the PHEV to run on a road under a comprehensive working condition for 150 thousand kilometers, and a research range covers a whole life cycle process; then collecting a material list and material energy input data of each component of the PHEV, carrying out list analysis, and constructing a full-life-cycle model; after classification, characterization and normalization processing, 11 kinds of midpoint environmental influence indexes are adopted for influence analysis, and meanwhile, probabilistic evaluation of key indexes (such as global warming potential (GWP)) is achieved through coupling of electric power structure clustering and Monte Carlo simulation; and finally, through result explanation, an accurate reference basis is provided for optimizing a PHEV manufacturing process, promoting technical innovation and reducing full-life-cycle environmental influence.

In some embodiments, a thermal management fluid conversion composition includes an additive. The additive is selected to miscibilize a first lubricant for a high global warming potential (GWP) refrigerant with a low GWP refrigerant. In some embodiments, a thermal management fluid conversion composition includes an additive and a first refrigerant. The thermal management fluid conversion composition is selected to miscibilize a second lubricant for a high global warming potential (GWP) refrigerant with a low GWP refrigerant.

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO2, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa).

Cleaning solvent blends comprising an HCFO such as l-chloro-2,3,3,- trifluoropropene; trans-dichloroethylene; and a high boiling HEE such as HFE-7300; have utility as a non-flammable, low-global warming potential, azeotrope-like cleaning solvent compositions. Additional solvent ingredients may include surfactants and co-solvents. A method for cleaning articles of soiling substances comprises contacting the articles with the solvent composition by any suitable means such as a spray delivered by a propellant gas, or by contact with liquid and / or vapor solvent compositions, as in a conventional vapor degreaser apparatus, and removing the composition from the articles.

Provided is a composition for a refrigerator, which is a mixture of a mixed refrigerant that has a low global warming potential and contains carbon dioxide, and a refrigerator oil that has excellent compatibility with the mixed refrigerant and that has excellent thermal stability with respect to the mixed refrigerant. The composition for a refrigerator contains a refrigerant mixture and a refrigerator oil containing a base oil, the refrigerant mixture containing a fluorinated hydrocarbon compound and carbon dioxide, and the base oil containing at least one selected from the group consisting of polyvinyl ethers and polyol esters.

The embodiment of the invention discloses a refrigerating system and an environment test box. The refrigerating system comprises a high-temperature-section refrigerating cycle system, a low-temperature-section refrigerating cycle system and an evaporative condenser. The high-temperature section refrigeration cycle system and the low-temperature section refrigeration cycle system are connected through an evaporative condenser; the high-temperature section refrigeration cycle system uses R448A as a refrigerant for refrigeration cycle, and the low-temperature section refrigeration cycle system uses R473A as a refrigerant for refrigeration cycle. Traditional refrigerant combinations R404A and R23 are replaced by a combination of R448A and R473A which are lower in global warming potential, the technical problem that in the prior art, the global warming potential of a refrigerating system is high is solved, the technical effect that the refrigerating system not only can conduct ultralow-temperature refrigeration, but also has the low global warming potential is achieved, and the refrigerating system can be used for refrigerating at a low temperature. And the energy use efficiency of the refrigerating system is improved.

The present invention relates to novel fluorinated nitro compounds with low GWP and to the use of fluorinated nitro compounds with low GWP as heat transfer fluids in various applications.

The present invention relates to a process for preparing a refrigerant blend containing one or more purified hydrofluorocarbon compounds. [Solution] One or more hydrofluorocarbon compounds are recovered and purified from one or more refrigeration, air conditioning, or heat pump systems.

Methods are directed to on-site recovery and repurposing of refrigerant. The on-site recovery and / or repurposing recovers an original refrigerant and converts, in-situ, the original refrigerant into a converted refrigerant different from the original refrigerant. The converted refrigerant has a relatively lower global warming potential than the original refrigerant.

An air conditioning system is provided and includes a unit receptive of refrigerant having a moderate-to-low global warming potential (GWP) value for thermal interaction with a fluid, an enclosure, a fan disposed and configured for urging a flow of the fluid through the unit, a refrigerant detection sensor and a controller. The refrigerant detection sensor is disposed in the enclosure to be operable in a first mode in which a baseline response is established and a second mode in which refrigerant leak detection is executed based on the baseline response. The refrigerant detection sensor is further configured to generate a binary output of leak and non-leak signals in accordance with a result of the refrigerant leak detection. The controller is configured to control operations of the fan and the vent based on the binary output.

The present invention relates to a refrigerant composition for an air conditioning device, which has characteristics similar to those of R410A, has a sufficiently low global warming potential (GWP), and contains trifluoroethylene and trifluoroiodomethane.

The present invention relates to an insulating gas used for electrical insulation or arc extinguishing of an electrical device, and an electrical device for insulating electricity using the same. The insulating gas of the present invention, which may replace SF6 gas, consists of a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas of the present invention has the characteristics of a low boiling point, high dielectric strength, low toxicity, and a low global warming potential (GWP=1 or less), and thus may replace SF6, and the low global warming potential with no loss of high insulating capacity and arc extinguishing capability may reduce greenhouse gases.

To provide a separation membrane, a separation membrane module, a separation device, and a gas separation method which are excellent in productivity and workability, and can effectively separate gas having a high warming coefficient.SOLUTION: A separation membrane contains a thermoplastic resin as a main component, wherein in measurement of dynamic viscoelasticity, when the separation membrane is measured while changing the frequency to 1 to 100 Hz, an inclination A of a logarithmic approximate expression obtained from a frequency F and a tanδ peak temperature T plot is 1.4 or more.SELECTED DRAWING: None

Provided is a cleaning solution having a low global warming potential value and having particle removal properties equal to or higher than those of conventional hydrofluoroethers. The present invention relates to a cleaning solution for removing particles, the cleaning solution containing a hydrofluoroether, the hydrofluoroether being a compound represented by general formula (1).

Provided is a plasma processing device with which the operating cost of abatement equipment is minimized. This plasma processing device comprises: a processing chamber in which a sample is subjected to plasma processing; a high-frequency power supply which supplies high-frequency power for generating plasma; a sample mount on which the sample is placed; abatement equipment which decomposes waste gas from the processing chamber; and a control device which controls the abatement equipment. The control device controls the abatement equipment according to an abatement equipment operation condition defined on the basis of the global warming potential per unit of time calculated using an etching condition.

Provided is a heat transfer fluid which exhibits thermal stability in a wide temperature range, is suitable for use, and has a short atmospheric life at a level that lowers the global warming potential. A heat transfer fluid according to the present disclosure contains a compound which is represented by formula (A), and in which the number of Si atoms in formula (A) is one, and the total mass of the compound represented by formula (A) in the heat transfer fluid is 5 mass% or more. (In formula (A), Y5, Y6, Y7, and Y8 each independently represent a substituent group having 1-20 carbon atoms.)

The invention discloses a slow-mixing fertilizer suitable for increasing yield and reducing emission of machine-transplanted early rice in a low-latitude region. The slow-mixing fertilizer is prepared from the following components in parts by mass: 4-6 parts of sulfur-coated urea and 4-6 parts of 2-month resin-coated urea. The invention further discloses application of the slow-mixing fertilizer in early rice production, fertilization and rice transplanting are synchronously carried out, and the slow-mixing fertilizer is directly applied to the position 5 cm away from the rhizosphere side of seedlings and the position 3-5 cm deep in soil. The slow-mixing fertilizer provided by the invention can improve yield and nitrogen fertilizer utilization efficiency and reduce greenhouse gas emission. Compared with the conventional high-yield fractional fertilization, the slow-mixing fertilizer disclosed by the invention has the advantages that by applying the slow-mixing fertilizer disclosed by the invention, the yield of rice is increased by 7.5%-7.8%, the nitrogen fertilizer utilization efficiency is increased by 30.5%-44.5%, meanwhile, the global temperature increasing potential is reduced by 12.8%-27.5%, and the greenhouse gas emission intensity is reduced by 19.3%-32.7%.