Method, system and equipment for evaluating flammability of refrigerant and storage medium

Abstract

The invention discloses a method, a system and equipment for evaluating flammability of a refrigerant and a storage medium. The method comprises the following steps: acquiring molecular structure data and thermodynamic characteristic data of the refrigerant; calculating molecular rotation level energy, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data; calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic characteristic data; calculating an Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy; according to the Euclidean distance, calculating to obtain a flammability index; and according to the flammability index, the flammability of the refrigerant is evaluated. The method can quickly and accurately evaluate the flammability of the refrigerant by calculating the flammability index, can replace a traditional experimental measurement method, breaks through the limitation of experimental conditions, saves time and cost, and can be widely applied to the technical field of computers.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a method, system, device and storage medium for evaluating the flammability of a refrigerant. Background Art

[0002] Refrigerants are key working fluids in refrigeration and air-conditioning systems, and their performance directly affects the efficiency and safety of the system. In addition, the development of refrigerants with low global warming potential (GWP) is becoming increasingly important. However, many low-GWP refrigerants have certain flammability, which poses new challenges to the safety of their application. At present, the flammability assessment of refrigerants mainly relies on experimental measurement methods, such as the use of combustion testers and flammability test devices. Although these methods can provide accurate flammability data, they are time-consuming, costly, and have great limitations. Summary of the invention

[0003] The main purpose of the embodiments of the present application is to propose a method, system, device and storage medium for evaluating the flammability of a refrigerant, aiming to achieve fast and accurate refrigerant flammability evaluation and save time and cost.

[0004] To achieve the above object, one aspect of an embodiment of the present application provides a method for evaluating the flammability of a refrigerant, the method comprising:

[0005] Obtain molecular structure data and thermodynamic property data of refrigerants;

[0006] Calculating the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data;

[0007] Calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data;

[0008] calculating the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy;

[0009] Calculating a flammability index based on the Euclidean distance;

[0010] Based on the flammability index, the flammability of the refrigerant is evaluated.

[0011] In some embodiments, the step of obtaining the molecular structure data and thermodynamic property data of the refrigerant comprises the following steps:

[0012] Obtain the molecular formula and molecular mass of the refrigerant and obtain the molecular structure data;

[0013] The enthalpy and entropy of the refrigerant are obtained as thermodynamic property data.

[0014] In some embodiments, the calculating of the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data comprises the following steps:

[0015] Determine the molecular rotation constant, the molecular rotation quantum number, the number of hydrogen atoms, and the number of fluorine atoms according to the molecular formula and molecular mass of the refrigerant;

[0016] Determining the molecular rotational energy level according to the molecular rotational constant and the molecular rotational quantum number;

[0017] Determining the molecular rotational energy level energy according to the molecular rotational energy level;

[0018] Calculating the fluorine content according to the number of fluorine atoms, the molecular mass and the mass of fluorine atoms;

[0019] Calculating a fluorine-hydrogen ratio according to the number of hydrogen atoms, the number of fluorine atoms, the molecular mass, the mass of hydrogen atoms and the mass of fluorine atoms;

[0020] The intermolecular potential energy is calculated based on the potential well depth, collision diameter and average molecular distance.

[0021] In some embodiments, the calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data comprises the following steps:

[0022] Using molecular dynamics software, a dynamic simulation is performed on the refrigerant according to the molecular structure data and the thermodynamic property data to calculate the combustion equivalence ratio of the refrigerant;

[0023] Based on the combustion equivalence ratio, the adiabatic flame temperature is determined.

[0024] In some embodiments, evaluating the flammability of the refrigerant according to the flammability index comprises the following steps:

[0025] When the flammability index is less than zero, it is determined that the refrigerant is non-flammable;

[0026] When the flammability index is greater than zero, the refrigerant is determined to be flammable, and the larger the flammability index is, the higher the flammability is determined to be.

[0027] In some embodiments, the calculation expression of the Euclidean distance is:

[0028]

[0029] Where Ω represents the Euclidean distance; T frepresents the adiabatic flame temperature; F represents the fluorine content; V represents the intermolecular potential energy; FH represents the fluorine-hydrogen ratio; E(J) represents the molecular rotational energy level energy; a 1 represents the first fitting constant; a 2 represents the second fitting constant.

[0030] In some embodiments, the flammability index is calculated as:

[0031]

[0032] Wherein, Ω represents the Euclidean distance; and Fm represents the flammability index.

[0033] To achieve the above purpose, another aspect of the embodiment of the present application provides a system for evaluating the flammability of a refrigerant, the system comprising:

[0034] The first module is used to obtain the molecular structure data and thermodynamic property data of the refrigerant;

[0035] The second module is used to calculate the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data;

[0036] A third module is used to calculate the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data;

[0037] A fourth module is used to calculate the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy;

[0038] A fifth module is used to calculate a flammability index according to the Euclidean distance;

[0039] The sixth module is used to evaluate the flammability of the refrigerant according to the flammability index.

[0040] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application provides an electronic device, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the above-mentioned method when executing the computer program.

[0041] To achieve the above objective, another aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described above is implemented.

[0042] The embodiments of the present application include at least the following beneficial effects: The present application provides a method, system, device and storage medium for evaluating the flammability of a refrigerant. The scheme evaluates the flammability of a refrigerant based on molecular structure data and thermodynamic property data. By calculating the adiabatic flame temperature, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant, and combining molecular rotation constants and molecular dynamics simulation and other steps, the flammability of the refrigerant can be quickly and accurately evaluated. This can replace traditional experimental measurement methods, break through the limitations of experimental conditions, and thus save time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0044] Figure 1 is a flow chart of a method for evaluating the flammability of a refrigerant provided in an embodiment of the present application;

[0045] Figure 2 It is a flammability index calculation framework diagram provided in an embodiment of the present application;

[0046] Figure 3 is a module schematic diagram of a system for evaluating the flammability of a refrigerant provided in an embodiment of the present application;

[0047] Figure 4 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0049] Although the functional modules are divided in the system schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first / S100", "second / S200", etc. in the specification, claims and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0050] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0051] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0052] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0054] In the related art, the flammability evaluation of refrigerants mainly relies on experimental measurement methods, such as the use of combustion testers and flammability test devices. Although these methods can provide accurate flammability data, they have the following problems: (1) Time-consuming: Experimental measurements require multiple repeated tests to ensure the reliability of the data, which usually takes a long time. (2) High cost: The experimental equipment and operating costs are high, especially when large-scale screening is carried out. (3) Limitations: The experimental conditions may not fully simulate the actual use environment, resulting in deviations in the evaluation results in actual applications.

[0055] In view of this, a method, system, device and storage medium for evaluating the flammability of refrigerants are provided in the embodiments of the present application. The scheme evaluates the flammability of refrigerants based on molecular structure and thermodynamic properties. By calculating the adiabatic flame temperature and fluorine content of the refrigerant, and combining molecular rotation constants and molecular dynamics simulation and other steps, the flammability of the refrigerant can be quickly predicted, which can replace the traditional experimental measurement method, break through the limitations of experimental conditions, and thus save time and cost. In addition, by introducing molecular structure and thermodynamic properties, the present application can also provide a scientific basis for the development and optimization of refrigerants and ensure the safety of new refrigerants in application.

[0056] A method for evaluating the flammability of a refrigerant provided in an embodiment of the present application relates to the field of computer technology. A method for evaluating the flammability of a refrigerant provided in an embodiment of the present application can be applied to a terminal, can be applied to a server, or can be software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and a car terminal, etc., but is not limited to this; the server side can be configured as an independent physical server, or can be configured as a server cluster or a distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network; the software can be an application that implements a method for evaluating the flammability of a refrigerant, etc., but is not limited to the above forms.

[0057] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0058] Figure 1 is an optional flow chart of a method for evaluating the flammability of a refrigerant provided in an embodiment of the present application. Figure 1The method may include but is not limited to steps S100 to S600.

[0059] Step S100, obtaining molecular structure data and thermodynamic property data of the refrigerant.

[0060] Step S200, calculating the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data.

[0061] Step S300, calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic characteristic data.

[0062] Step S400, calculating the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy.

[0063] Step S500: Calculate the flammability index according to the Euclidean distance.

[0064] Step S600: evaluating the flammability of the refrigerant according to the flammability index.

[0065] Steps S100 to S600 shown in the embodiment of the present application evaluate the flammability of the refrigerant based on molecular structure data and thermodynamic property data, calculate the adiabatic flame temperature, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant, and combine steps such as molecular rotation constants and molecular dynamics simulation to quickly and accurately evaluate the flammability of the refrigerant, which can replace traditional experimental measurement methods, break through the limitations of experimental conditions, and thus save time and cost.

[0066] In some embodiments, step S100 may include but is not limited to steps S110 to S120:

[0067] Step S110, obtaining the molecular formula and molecular mass of the refrigerant to obtain molecular structure data.

[0068] Step S120, acquiring the enthalpy and entropy of the refrigerant as thermodynamic characteristic data.

[0069] In some embodiments, step S200 may include but is not limited to steps S210 to S260:

[0070] Step S210, determining the molecular rotation constant, the molecular rotation quantum number, the number of hydrogen atoms, and the number of fluorine atoms according to the molecular formula and molecular mass of the refrigerant.

[0071] Step S220, determining the molecular rotation energy level according to the molecular rotation constant and the molecular rotation quantum number.

[0072] Step S230, determining the molecular rotational energy level energy according to the molecular rotational energy level.

[0073] Step S240, calculating the fluorine content according to the number of fluorine atoms, the molecular mass and the mass of fluorine atoms.

[0074] Step S250, calculating the fluorine-hydrogen ratio according to the number of hydrogen atoms, the number of fluorine atoms, the molecular mass, the mass of hydrogen atoms and the mass of fluorine atoms.

[0075] Step S260, calculating the intermolecular potential energy according to the potential well depth, collision diameter, and average molecular distance of the molecules.

[0076] In some embodiments, step S300 may include but is not limited to steps S310 to S320:

[0077] Step S310, using molecular dynamics software, a dynamics simulation is performed on the refrigerant according to the molecular structure data and the thermodynamic characteristic data, and a combustion equivalence ratio of the refrigerant is calculated.

[0078] Step S320, determining the adiabatic flame temperature according to the combustion equivalence ratio.

[0079] In step S400 of some embodiments, the calculation expression of the Euclidean distance is:

[0080]

[0081] Where Ω represents the Euclidean distance; T f represents the adiabatic flame temperature; F represents the fluorine content; V represents the intermolecular potential energy; FH represents the fluorine-hydrogen ratio; E(J) represents the molecular rotational energy level energy; a 1 represents the first fitting constant; a 2 represents the second fitting constant.

[0082] In step S500 of some embodiments, the calculation expression of the flammability index is:

[0083]

[0084] Wherein, Ω represents the Euclidean distance; and Fm represents the flammability index.

[0085] In some embodiments, step S600 may include but is not limited to steps S610 to S620:

[0086] Step S610: When the flammability index is less than zero, it is determined that the refrigerant is non-flammable.

[0087] Step S620: When the flammability index is greater than zero, it is determined that the refrigerant is flammable, and the greater the flammability index is, the higher the flammability is.

[0088] Below, in conjunction with the accompanying drawings and specific examples of refrigerant flammability assessment application, the scheme of the embodiment of the present application is described in detail and explained:

[0089] In an embodiment of the present application, a method for evaluating the flammability of a refrigerant is provided, which can be used to quickly and accurately evaluate the flammability of a refrigerant to replace the traditional experimental measurement method, thereby saving time and cost. Further, the embodiment of the present application can achieve the following:

[0090] (1) Prepare data.

[0091] Collect molecular structure data and thermodynamic property data of refrigerants, including but not limited to molecular formula, molecular mass, enthalpy, entropy, etc. These data can be obtained by searching literature.

[0092] (2) Determine the molecular rotation constant.

[0093] The molecular rotation constant B represents the relationship between the energy of a molecule in rotational motion and the rotational quantum number J. For a diatomic molecule, the energy E of the rotational energy level can be expressed as:

[0094] E(J) = BJ(J+1);

[0095] Where J is the rotational quantum number, which is usually 0, 1, 2, etc.; B is the rotation constant, which is determined according to the molecule. For example, for a diatomic molecule, the rotation constant B is:

[0096]

[0097] Where h is Planck's constant, I is the moment of inertia of the molecule, and c is the speed of light.

[0098] (3) Based on the molecular structure data and thermodynamic property data, molecular dynamics simulation (chemical kinetics simulation) is performed on the refrigerant to calculate the combustion equivalence ratio θ and then determine the adiabatic flame temperature T f . Adiabatic flame temperature T f It is a function of the combustion equivalence ratio θ, expressed as: T f =f(θ).

[0099] In some embodiments, molecular dynamics simulations can be performed using molecular dynamics software.

[0100] (4) Calculate the fluorine content of the refrigerant molecules. The calculation expression is:

[0101]

[0102] Among them, n F is the number of fluorine atoms, M F is the atomic mass of the fluorine atom, M w is the molecular mass of the molecule.

[0103] (5) Calculate the fluorine-hydrogen ratio of the refrigerant molecules. The calculation expression is:

[0104]

[0105] Among them, n H is the number of hydrogen atoms, M H is the atomic mass of a hydrogen atom.

[0106] (6) Calculate the intermolecular potential energy V, the calculation expression is:

[0107]

[0108] Among them, ∈ is the potential well depth; σ is the collision diameter, which represents the distance between two molecules when the interaction is zero; r is the average molecular spacing.

[0109] Specifically, for the collision diameter σ, the average value can be directly used, that is, for two molecules with different collision diameters, their collision diameters are σ i and σ j ,but:

[0110]

[0111] Similarly, if there are different potential well depths ∈, assuming that they are ∈ i and ∈ j ,but:

[0112]

[0113] The potential well depth ∈ and collision diameter σ of each molecule can be obtained by searching literature or public databases.

[0114] For the molecular distance, it can be directly estimated by the van der Waals radius. For example, when the two molecular radii are r i and r j When , the molecular distance r can be calculated as:

[0115] r=r i +r j ;

[0116] Another estimation method is to directly use r = 1.5σ (1.5 times the collision diameter).

[0117] (7) Calculate the Euclidean distance and further calculate the flammability index. The calculation process is as follows:

[0118]

[0119] Where, Ω represents the Euclidean distance; Fm represents the flammability index; a 1 and a 2 is a fitting constant. The current research on 7 common refrigerants on the market shows that a 1 is 1200, a 2 It is also 1200. It should be noted that a 1 and a 2 It can be set according to actual fitting requirements, and the embodiments of the present application are not limited to this.

[0120] Using Euclidean distance to calculate the flammability index can improve the calculation speed of the flammability index, and using a 1 and a 2 The two fitting constants are helpful to compensate for the effects of carbon-hydrogen bonds and chemical bonds between carbon atoms on flammability, correct calculation errors, and improve calculation accuracy. In addition, by adding E(J) as the coefficient of the fluorine-hydrogen ratio, the calculation accuracy can be further improved.

[0121] (8) Determine the flammability of the refrigerant based on the flammability index.

[0122] Specifically, it can be determined as follows:

[0123] ②Fm<0: non-flammable;

[0124] ②Fm>0: flammable, and the higher the Fm, the higher the flammability.

[0125] In some embodiments, Fm between 0 and 5 or close to 5 can be classified as "slightly flammable" with a safety rating of 2L, and Fm greater than 5 can be classified as "flammable" with a safety rating of 2.

[0126] The following is an example of an evaluation result table, please refer to Table 1:

[0127] Table 1

[0128]

[0129]

[0130] In Table 1, the flammability of five refrigerants was evaluated using the method of the embodiment of the present application to obtain the flammability index of each refrigerant. Based on the flammability index, the flammability evaluation results of each refrigerant were obtained.

[0131] In summary, the embodiments of the present application have at least the following beneficial effects:

[0132] 1. Evaluate the flammability of refrigerants based on molecular structure and thermodynamic properties. By calculating the adiabatic flame temperature, fluorine content and fluorine-hydrogen ratio of the refrigerant, and combining molecular rotation constants and molecular dynamics simulation, the flammability of the refrigerant can be quickly predicted, which can replace the traditional experimental measurement method and break through the limitations of experimental conditions, thereby saving time and cost. In addition, by introducing molecular structure and thermodynamic properties, this application can also provide a scientific basis for the development and optimization of refrigerants and ensure the safety of new refrigerants in application.

[0133] 2. By quickly evaluating the flammability of refrigerants, the embodiments of the present application are conducive to significantly shortening the research and development cycle of new refrigerants, and can identify high-risk refrigerant combinations in the early stages of refrigerant research and development, thereby reducing safety hazards.

[0134] 3. Rapid screening of refrigerant combinations with reduced global warming potential (GWP) helps reduce greenhouse gas emissions and protect the environment.

[0135] See also Figure 3 The embodiment of the present application further provides a system for evaluating the flammability of a refrigerant, which can implement the above-mentioned method for evaluating the flammability of a refrigerant. The system includes:

[0136] The first module 101 is used to obtain molecular structure data and thermodynamic property data of the refrigerant;

[0137] The second module 102 is used to calculate the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data;

[0138] The third module 103 is used to calculate the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic characteristic data;

[0139] A fourth module 104 is used to calculate the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy;

[0140] A fifth module 105 is used to calculate a flammability index according to the Euclidean distance;

[0141] The sixth module 106 is used to evaluate the flammability of the refrigerant according to the flammability index.

[0142] It can be understood that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0143] The embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned method for evaluating the flammability of a refrigerant when executing the computer program. The electronic device can be any smart terminal including a tablet computer, a car computer, etc.

[0144] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0145] See also Figure 4 , Figure 4 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0146] The processor 201 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0147] The memory 202 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 202 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 202, and the processor 201 calls and executes a method for evaluating the flammability of a refrigerant in the embodiment of this application;

[0148] Input / output interface 203, used to implement information input and output;

[0149] The communication interface 204 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0150] Bus 205 , which transmits information between various components of the device (e.g., processor 201 , memory 202 , input / output interface 203 , and communication interface 204 );

[0151] The processor 201 , the memory 202 , the input / output interface 203 and the communication interface 204 are connected to each other in communication within the device via the bus 205 .

[0152] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the above-mentioned method for evaluating the flammability of a refrigerant is implemented.

[0153] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0154] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0155] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0156] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0157] The system embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0158] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0159] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0160] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0161] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0162] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0163] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0164] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes multiple instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store programs.

[0165] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A method for evaluating the flammability of a refrigerant, characterized in that: The following steps are involved: Obtain molecular structure data and thermodynamic property data of refrigerants; Calculating the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data; Calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data; calculating the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy; Calculating a flammability index based on the Euclidean distance; Based on the flammability index, the flammability of the refrigerant is evaluated.

2. The method according to claim 1, characterized in that The step of obtaining the molecular structure data and thermodynamic property data of the refrigerant comprises the following steps: Obtain the molecular formula and molecular mass of the refrigerant and obtain the molecular structure data; The enthalpy and entropy of the refrigerant are obtained as thermodynamic property data.

3. The method according to claim 1, characterized in that: The method of calculating the molecular rotation energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data comprises the following steps: Determine the molecular rotation constant, the molecular rotation quantum number, the number of hydrogen atoms, and the number of fluorine atoms according to the molecular formula and molecular mass of the refrigerant; Determining the molecular rotational energy level according to the molecular rotational constant and the molecular rotational quantum number; Determining the molecular rotational energy level energy according to the molecular rotational energy level; Calculating the fluorine content according to the number of fluorine atoms, the molecular mass and the mass of fluorine atoms; Calculating a fluorine-hydrogen ratio according to the number of hydrogen atoms, the number of fluorine atoms, the molecular mass, the mass of hydrogen atoms and the mass of fluorine atoms; The intermolecular potential energy is calculated based on the potential well depth, collision diameter and average molecular distance.

4. The method according to claim 1, characterized in that: The step of calculating the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data comprises the following steps: Using molecular dynamics software, a dynamic simulation is performed on the refrigerant according to the molecular structure data and the thermodynamic property data to calculate the combustion equivalence ratio of the refrigerant; Based on the combustion equivalence ratio, the adiabatic flame temperature is determined.

5. The method according to claim 1, characterized in that The step of evaluating the flammability of the refrigerant according to the flammability index comprises the following steps: When the flammability index is less than zero, it is determined that the refrigerant is non-flammable; When the flammability index is greater than zero, the refrigerant is determined to be flammable, and the larger the flammability index is, the higher the flammability is determined to be.

6. The method according to claim 1, characterized in that The calculation expression of Euclidean distance is: Where Ω represents the Euclidean distance; T f represents the adiabatic flame temperature; F represents the fluorine content; V represents the intermolecular potential energy; FH represents the fluorine-hydrogen ratio; E(J) represents the molecular rotational energy level energy; a1 represents the first fitting constant; and a2 represents the second fitting constant.

7. The method according to claim 1, characterized in that The calculation expression of the flammability index is: Wherein, Ω represents the Euclidean distance; and Fm represents the flammability index.

8. A system for evaluating the flammability of a refrigerant, characterized in that: include: The first module is used to obtain the molecular structure data and thermodynamic property data of the refrigerant; The second module is used to calculate the molecular rotational energy level, fluorine content, fluorine-hydrogen ratio and intermolecular potential energy of the refrigerant according to the molecular structure data; A third module is used to calculate the adiabatic flame temperature of the refrigerant according to the molecular structure data and the thermodynamic property data; A fourth module is used to calculate the Euclidean distance according to the molecular rotation energy level, the adiabatic flame temperature, the fluorine content, the fluorine-hydrogen ratio and the intermolecular potential energy; A fifth module is used to calculate a flammability index according to the Euclidean distance; The sixth module is used to evaluate the flammability of the refrigerant according to the flammability index.

9. An electronic device, characterized in that: including a processor and a memory; The memory is used to store programs; The processor executes the program to implement the method according to any one of claims 1 to 7.

10. A computer storage medium storing a program executable by a processor, characterized in that: The program executable by the processor is used to implement the method according to any one of claims 1 to 7 when executed by the processor.

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