Simulation calculation method, device and equipment of flow path combination and medium

Abstract

The application discloses a kind of flow path combination simulation calculation method, device, equipment and medium, the method includes: obtaining the structure parameter, working condition parameter and inlet and outlet water pipe installation requirement information of fan-coil heat exchanger;Determine flow path number value range based on structure parameter and working condition parameter;According to flow path number value range and inlet and outlet water pipe installation requirement information, determine flow path combination information;Calculate the heat exchange capacity and water side pressure drop value of fan-coil heat exchanger under different flow path combination information;Based on heat exchange capacity and water side pressure drop value, determine target flow path combination from flow path combination information.The application determines flow path number value range, and determines flow path combination information according to flow path number value range and inlet and outlet water pipe installation requirement information, realizes to narrow the design range of flow path combination, reduces simulation calculation amount, is favorable for improving the determination efficiency of flow path combination in fan-coil heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a simulation calculation method, apparatus, equipment and medium for flow path combination. Background Technology

[0002] Fan coil units, as a semi-centralized air-water air conditioning system, are widely used in public buildings such as hotels, office buildings, and hospitals due to their advantages such as small size, convenient and flexible installation, and individual controllability. Traditional fan coil unit heat exchanger design methods rely heavily on extensive experimental data. To reduce experiments and tedious calculations, engineers often use approximation methods and empirical formulas for fan coil unit heat exchanger design calculations, resulting in discrepancies between the calculated results and actual test results. With the development of computer technology, using simulation technology to model and calculate heat exchangers has become an important method for the rapid and efficient design of fan coil unit heat exchangers, significantly improving calculation accuracy. This method is now widely used in the design and optimization of fan coil unit heat exchangers.

[0003] The existing method for simulating the flow path of fan coil heat exchangers involves inputting various flow path combination design schemes one by one into simulation software for simulation calculations, and then comparing and analyzing the simulation results to select the optimal scheme. However, this method lacks precise design of the flow path combination schemes, requiring simulation design for numerous flow path combination schemes, thus resulting in low efficiency in determining the final flow path combination scheme. Summary of the Invention

[0004] This invention provides a simulation calculation method, apparatus, equipment, and medium for flow path combinations to improve the efficiency of determining flow path combinations in fan coil heat exchangers.

[0005] In a first aspect, embodiments of the present invention provide a simulation calculation method for flow path combinations, comprising:

[0006] Obtain information on the structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of the fan coil heat exchanger.

[0007] The range of values ​​for the number of flow paths is determined based on the structural parameters and the operating condition parameters.

[0008] The combination information of the number of flow paths is determined based on the range of values ​​for the number of flow paths and the installation requirements of the inlet and outlet water pipes.

[0009] Calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different combinations of the number of flow paths;

[0010] Based on the heat exchange and the water-side pressure drop, the target flow path combination is determined from the flow path combination information.

[0011] Secondly, embodiments of the present invention provide a simulation computing device for flow path combination, comprising:

[0012] The heat exchanger information acquisition unit is used to acquire information on the structural parameters, operating parameters, and inlet and outlet water pipe installation requirements of the fan coil heat exchanger.

[0013] The flow path number range determination unit is used to determine the flow path number range based on the structural parameters and the operating condition parameters;

[0014] A flow path number combination information generation unit is used to determine the flow path number combination information based on the flow path number value range and the inlet and outlet water pipe installation requirements information;

[0015] The water-side pressure drop calculation unit is used to calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different combinations of the number of flow paths.

[0016] The target flow path combination determination unit is used to determine the target flow path combination from the flow path combination information based on the heat exchange and the water-side pressure drop value.

[0017] Thirdly, embodiments of the present invention provide a computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the simulation calculation method for flow path combination described in the first aspect.

[0018] Fourthly, embodiments of the present invention also provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, causes the processor to perform the simulation calculation method for flow path combination described in the first aspect.

[0019] This invention provides a simulation calculation method, apparatus, equipment, and medium for flow path combinations. The method includes: acquiring structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of a fan coil heat exchanger; determining the range of flow path number values ​​based on the structural parameters and operating parameters; determining flow path number combination information based on the flow path number range and inlet / outlet water pipe installation requirements; calculating the heat exchange and water-side pressure drop of the fan coil heat exchanger under different flow path number combination information; and determining the target flow path number combination from the flow path number combination information based on the heat exchange and water-side pressure drop. This invention, through determining the range of flow path numbers and the combination information of flow path numbers based on the range of flow path numbers and the installation requirements of inlet and outlet water pipes, narrows the design range of flow path combinations, reduces the amount of simulation calculations, and calculates the heat exchange and water-side pressure drop values ​​under different flow path combination information. This allows for the selection of target flow path combinations, achieving the goal of reducing the amount of calculations while ensuring that the designed flow path combinations meet the flow path design requirements of fan coil heat exchangers. This, in turn, helps to improve the efficiency of determining flow path combinations in fan coil heat exchangers. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A flowchart illustrating the simulation calculation method for flow path combination provided in an embodiment of the present invention;

[0022] Figure 2 This is a flowchart illustrating a simulation calculation method for flow path combination provided in an embodiment of the present invention.

[0023] Figure 3 A flowchart illustrating a simulation calculation method for flow path combination provided in another embodiment of the present invention;

[0024] Figure 4 A flowchart illustrating a simulation calculation method for flow path combination provided in another embodiment of the present invention;

[0025] Figure 5 A flowchart illustrating a simulation calculation method for flow path combination provided in another embodiment of the present invention;

[0026] Figure 6 A schematic block diagram of a simulation computing device for flow path combination provided in an embodiment of the present invention;

[0027] Figure 7 A schematic block diagram of a computer device provided for an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] Please see Figure 1 , Figure 1 This is a flowchart illustrating the simulation calculation method for flow path combinations provided in an embodiment of the present invention. The simulation calculation method for flow path combinations provided in this embodiment of the present invention is applied to computer equipment.

[0033] S1. Obtain the structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of the fan coil heat exchanger.

[0034] In this embodiment, the structural parameters include the total length of the heat exchange tubes in the flow path, the length of a single heat exchange tube, the inner diameter of the heat exchange tube, the flow area, the number of tube rows in the fan coil heat exchanger, and the number of tubes per row of the fan coil heat exchanger, etc. The operating parameters include the preset heat exchange capacity, the preset water-side pressure drop, the flow area, and the water flow rate, etc. The preset heat exchange capacity refers to the achievable heat exchange capacity in the flow path design of the fan coil heat exchanger. The preset water-side pressure drop is the water-side pressure drop value that cannot be exceeded in the flow path design of the fan coil heat exchanger.

[0035] S2. Determine the range of flow path numbers based on structural parameters and operating parameters.

[0036] In this embodiment, the number of flow paths is calculated based on a preset formula using the input structural parameters and operating parameters, thereby determining the range of flow path values. This avoids the need to input the flow path number into the simulation software starting from 1, reducing the amount of calculation and improving the efficiency of flow path design.

[0037] Please see Figure 2 , Figure 2 A specific implementation of step S2 is shown below:

[0038] S21: Calculate the estimated water-side pressure drop based on structural parameters and operating parameters using the first preset formula.

[0039] The first preset formula is:

[0040]

[0041] Wherein, ΔP 估 Here is the estimated pressure drop on the water side, f is the friction factor, u is the flow velocity, ρ is the density, and A is the pressure drop on the water side. i Where L is the flow area, L is the total length of the heat exchange tubes in the flow path, and d is the flow area. i V is the inner diameter of the heat exchange tube, m is the water flow rate, n is the number of rows of heat exchange tubes in the fan coil heat exchanger, l is the length of a single heat exchange tube, and N is the total number of flow paths.

[0042] In this embodiment, the estimated water-side pressure drop is calculated starting from the total number of flow paths N of 1 using a first preset formula, so that each total number of flow paths corresponds to one estimated water-side pressure drop value. Subsequently, by determining whether the estimated water-side pressure drop value is within a preset range, the total number of flow paths that meet the conditions is obtained, and thus the range of flow path values ​​is determined.

[0043] S22: Determine the range of water-side pressure drop based on the preset upward and downward floating ratio and the preset water-side pressure drop value in the operating parameters.

[0044] S23: Obtain the water-side pressure drop value within the water-side pressure drop range and use it as the target water-side pressure drop value.

[0045] S24: Determine the range of flow path numbers based on the number of flow paths corresponding to the water-side pressure drop.

[0046] In this embodiment, the water-side pressure drop range is determined based on a preset upward and downward fluctuation ratio and a preset water-side pressure drop value in the operating parameters. In this embodiment, (1+t1)*△P is used as the lower limit of the water-side pressure drop range, and (1+t2)*△P is used as the upper limit. Here, t1 and t2 are preset upward and downward fluctuation ratios, and △P is a preset water-side pressure drop value. It should be noted that the values ​​of t1 and t2 can be selected based on experience. In this embodiment, the preferred range for t1 is (-35%, -10%), and the preferred range for t2 is (0, +15%).

[0047] Furthermore, since the above steps have already yielded an estimated water-side pressure drop value corresponding to each total number of flow paths, the water-side pressure drop value within the specified range is obtained as the target water-side pressure drop value. Then, the total number of flow paths corresponding to the target water-side pressure drop value is obtained, thereby confirming the range of flow path values. The flow path value range refers to the range of total flow paths that meet the specified conditions. For example, if the total number of flow paths corresponding to the target water-side pressure drop values ​​are 10, 11, and 12, then the flow path value range is [10, 12].

[0048] S3. Determine the combination information of the number of flow paths based on the range of values ​​for the number of flow paths and the installation requirements of the inlet and outlet water pipes.

[0049] In this embodiment, the flow path combination information includes the quantity of various flow paths and the number of flow pipes for each flow path. For example, if the flow path count includes {6, 4, 2}, and the corresponding number of flow pipes is {2, 1, 7}, then the flow path combination information is 2*6+1*4+7*2. In this embodiment, various flow path combination information will be determined based on the range of flow path count values ​​and the installation requirements of the inlet and outlet water pipes.

[0050] Please see Figure 3 , Figure 3 A specific implementation of step S3 is shown below:

[0051] S31: Based on the range of flow path numbers and structural parameters, calculate the average number of tubes in each flow path of the fan coil heat exchanger.

[0052] Specifically, if the number of flow paths ranges from [a, b], and the structural parameters include the number of fan coil heat exchanger tube rows m and the number of tubes per row n, then the average number of tubes in each flow path of the fan coil heat exchanger can be calculated using the following formula:

[0053] Where, N i The number of flow paths can be any integer within the range of possible values.

[0054] Furthermore, the average number of tubes is rounded down. Ensure that the calculated average number of pipes is a positive integer. For example, if the number of flow paths ranges from [10, 12], m is 3, and n is 10, then the calculated average number of pipes is... The values ​​are 3, 30 / 11, and 2.5, respectively, after rounding. The numbers are 3, 2, and 2 respectively.

[0055] S32: Based on the installation requirements of the inlet and outlet water pipes and the average number of pipes, calculate the number of pipes in each flow path in the flow path combination information.

[0056] Please see Figure 4 , Figure 4 A specific implementation of step S32 is shown below:

[0057] S321: Determine the odd / even information of the number of flow path pipes based on the installation requirements of the inlet and outlet water pipes.

[0058] S322: If the odd / even information of the number of flow path tubes is even, the number of each flow path tube in the flow path number combination information is calculated based on the average number of tubes according to the first preset value method.

[0059] S323: If the odd / even information of the number of flow path tubes is odd, calculate the number of each flow path tube in the flow path number combination information based on the average number of tubes and according to the second preset value method.

[0060] S324: Determine if there are any flow path tubes less than or equal to zero in each flow path tube count. If so, delete the flow path tubes less than zero.

[0061] In this embodiment, the inlet and outlet water pipes of the fan coil unit can be installed on the same side or opposite sides. Therefore, the installation requirement information for the inlet and outlet water pipes is generated according to specific needs. If the installation requirement information for the inlet and outlet water pipes is same-side installation, then the odd / even information of the number of flow path pipes is determined to be even, that is, the value of the number of flow path pipes is always an even number. The value selection method is used to calculate the number of each flow path pipe in the flow path number combination information (i.e., the first preset value selection method); if the inlet and outlet water pipe installation requirements are for opposite-side installation, then the odd / even information of the flow path pipe number is determined to be odd, that is, the flow path pipe number value is always an odd number, which is determined by... The value selection method is used to calculate the number of pipes in each flow path combination information (i.e., the second preset value selection method). Finally, it is determined whether there are any flow path pipes less than or equal to zero. If so, the flow path pipes less than zero are deleted; otherwise, all flow path pipes are retained. Since only [the value] exists... and Only in these two cases is it possible for the number of flow path tubes to be less than or equal to zero, so it is only necessary to determine these two flow path tube numbers.

[0062] S33: Calculate the number of each flow path in the flow path combination information according to the number of each flow path tube using the second preset formula.

[0063] The second preset formula is:

[0064] p1*x1+p2*x2+p3*x3=m*n;

[0065] p1 + p2 + p3 = N;

[0066] Where p1, p2, and p3 are the number of each flow path in the flow path combination information, N is the total number of flow paths, m is the number of rows of fan coil heat exchanger tubes, n is the number of tubes in each row of fan coil heat exchanger tubes, and x1, x2, and x3 are the number of tubes in each flow path.

[0067] In this embodiment of the application, when the number of flow path tubes is odd, x1, x2, and x3 are respectively When the number of flow path tubes is even, x1, x2, and x3 are respectively... The values ​​of p1, p2, and p3 are obtained through iterative calculation using the second preset formula. A set of flow path tubes corresponds to a set of flow path numbers. Combining the two forms a set of flow path number combination information. However, since there are often more than one set of flow path number combination information, it is necessary to determine which set of flow path number combination information is the optimal combination in order to improve the heat exchange efficiency of the fan coil heat exchanger.

[0068] S4. Calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different combinations of flow path numbers.

[0069] In this embodiment, having obtained multiple flow path combinations in the above steps, the next step is to determine which flow path combination is the optimal one. In this embodiment, the multiple flow path combinations are sequentially input into simulation software to calculate the heat transfer and water-side pressure drop of the fan coil heat exchanger corresponding to each flow path combination.

[0070] S5. Based on the heat exchange and water-side pressure drop values, determine the target flow path combination from the flow path combination information.

[0071] Please see Figure 5 , Figure 5 A specific implementation of step S5 is shown below:

[0072] S51: Select water-side pressure drop values ​​that are lower than the preset water-side pressure drop value as the target water-side pressure drop value.

[0073] S52: Use the heat exchange corresponding to the target water-side pressure drop as the initial heat exchange.

[0074] S53: Obtain the preset heat exchange rate from the operating parameters, and select the heat exchange rate that is closest to the preset heat exchange rate from the initial heat exchange rate as the target heat exchange rate.

[0075] S54: Determine the target flow path combination from the flow path combination information based on the target heat exchange.

[0076] In this embodiment, the fan coil heat exchanger is designed with heat exchange capacity and water-side pressure drop value, which are the preset heat exchange capacity and preset water-side pressure drop value in this embodiment. In the flow path combination design of the fan coil heat exchanger, the calculated water-side pressure drop value is required to be lower than the preset water-side pressure drop value. After meeting this condition, the heat exchange capacity closest to the preset heat exchange capacity is selected from the initial heat exchange capacity as the target heat exchange capacity. Finally, the target flow path combination is determined from the flow path combination information based on the target heat exchange capacity.

[0077] In one specific embodiment, when the total number of flow paths N = 10, the calculated number of flow paths are {2,1,7}, {1,3,6}, and {0,5,5}, respectively, corresponding to 6, 4, and 2 flow path tubes. The flow path combinations for N = 11 and 12 are also calculated. After simulation calculations of each flow path combination, the following results are obtained:

[0078]

[0079]

[0080] If the preset heat exchange rate Q = 12600W and the preset water-side pressure drop ΔP = 50kPa, then the preferred embodiment of this application is f.

[0081] This application embodiment obtains the structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of a fan coil heat exchanger; determines the range of flow path numbers based on the structural and operating parameters; determines flow path number combinations based on the flow path number range and inlet / outlet water pipe installation requirements; calculates the heat exchange and water-side pressure drop of the fan coil heat exchanger under different flow path number combinations; and determines the target flow path number combination from the flow path number combination information based on the heat exchange and water-side pressure drop values. This embodiment of the invention, by determining the range of flow path numbers and determining the flow path number combinations based on the flow path number range and inlet / outlet water pipe installation requirements, narrows the design range of flow path combinations, reduces the amount of simulation calculation, and simultaneously calculates the heat exchange and water-side pressure drop values ​​under different flow path combination information, thereby selecting the target flow path number combination. This achieves the goal of reducing the amount of calculation while ensuring that the designed flow path combination meets the flow path design requirements of the fan coil heat exchanger, thus improving the efficiency of determining flow path combinations in fan coil heat exchangers.

[0082] This invention also provides a simulation calculation apparatus for flow path combinations, which is used to execute any embodiment of the aforementioned simulation calculation method for flow path combinations. Specifically, please refer to... Figure 6 , Figure 6 This is a schematic block diagram of a simulation computing device for flow path combination provided in an embodiment of the present invention.

[0083] Among them, such as Figure 6 As shown, the simulation calculation device 6 for flow path combination includes a heat exchanger information acquisition unit 61, a flow path number value range determination unit 62, a flow path number combination information generation unit 63, a water-side pressure drop value calculation unit 64, and a target flow path number combination determination unit 65.

[0084] The heat exchanger information acquisition unit 61 is used to acquire the structural parameters, operating parameters and inlet and outlet water pipe installation requirements of the fan coil heat exchanger.

[0085] The flow path number range determination unit 62 is used to determine the flow path number range based on structural parameters and operating parameters;

[0086] The flow path number combination information generation unit 63 is used to determine the flow path number combination information based on the flow path number value range and the inlet and outlet water pipe installation requirements.

[0087] The water-side pressure drop calculation unit 64 is used to calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different flow path combinations.

[0088] The target flow path combination determination unit 65 is used to determine the target flow path combination from the flow path combination information based on the heat exchange and water-side pressure drop values.

[0089] Furthermore, the unit 62 for determining the range of flow path numbers includes:

[0090] A calculation unit for estimating water-side pressure drop is used to calculate the estimated water-side pressure drop based on structural parameters and operating parameters using a first preset formula.

[0091] The water-side pressure drop range determination unit is used to determine the water-side pressure drop range value based on the preset upper and lower fluctuation ratio and the preset water-side pressure drop value in the operating condition parameters;

[0092] The target water-side pressure drop value generation unit is used to obtain water-side pressure drop values ​​within the water-side pressure drop range and use them as the target water-side pressure drop value.

[0093] The flow path number range generation unit is used to determine the flow path number range based on the flow path number corresponding to the water-side pressure drop value.

[0094] Furthermore, the first preset formula:

[0095]

[0096] Wherein, ΔP 估 Here is the estimated pressure drop on the water side, f is the friction factor, u is the flow velocity, ρ is the density, and A is the pressure drop on the water side. i Where L is the flow area, L is the total length of the heat exchange tubes in the flow path, and d is the flow area. i V is the inner diameter of the heat exchange tube, m is the water flow rate, n is the number of rows of heat exchange tubes in the fan coil heat exchanger, l is the length of a single heat exchange tube, and N is the total number of flow paths.

[0097] Furthermore, the target flow path combination determination unit 65 includes:

[0098] The target water-side pressure drop value screening unit is used to screen out water-side pressure drop values ​​that are lower than the preset water-side pressure drop value as the target water-side pressure drop value.

[0099] The initial heat exchange screening unit is used to select the heat exchange corresponding to the target water-side pressure drop value as the initial heat exchange.

[0100] The target heat exchange determination unit is used to obtain the preset heat exchange from the operating parameters and select the heat exchange that is closest to the preset heat exchange from the initial heat exchange as the target heat exchange;

[0101] The target flow path combination filtering unit is used to determine the target flow path combination from the flow path combination information based on the target heat exchange.

[0102] Furthermore, the flow path combination information generation unit 63 includes:

[0103] The average tube count calculation unit is used to calculate the average tube count of each flow path in the fan coil heat exchanger based on the range of flow path count values ​​and structural parameters.

[0104] The flow path pipe count calculation unit is used to calculate the number of each flow path pipe in the flow path number combination information based on the inlet and outlet water pipe installation requirements and the average number of pipes.

[0105] The flow path number calculation unit is used to calculate the number of each flow path in the flow path number combination information according to the number of each flow path tube using a second preset formula.

[0106] Furthermore, the flow path tube count calculation unit includes:

[0107] The flow path pipe parity information determination unit is used to determine the parity information of the flow path pipe number based on the inlet and outlet water pipe installation requirements information.

[0108] The first calculation unit is used to calculate the number of each flow path tube in the flow path number combination information based on the average number of tubes and according to the first preset value method when the odd-even information of the number of flow path tubes is even.

[0109] The second calculation unit is used to calculate the number of each flow path tube in the flow path number combination information based on the average number of tubes and according to the second preset value method when the odd number of flow path tubes is odd.

[0110] The flow path deletion unit is used to determine whether there are flow path tubes less than or equal to zero in each flow path tube count. If so, the flow path tubes less than zero are deleted.

[0111] Furthermore, the second preset formula:

[0112] p1*x1+p2*x2+p3*x3=m*n;

[0113] p1 + p2 + p3 = N;

[0114] Where p1, p2, and p3 are the number of each flow path in the flow path combination information, N is the total number of flow paths, m is the number of rows of fan coil heat exchanger tubes, n is the number of tubes in each row of fan coil heat exchanger tubes, and x1, x2, and x3 are the number of tubes in each flow path.

[0115] This application embodiment obtains the structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of a fan coil heat exchanger; determines the range of flow path numbers based on the structural and operating parameters; determines flow path number combinations based on the flow path number range and inlet / outlet water pipe installation requirements; calculates the heat exchange and water-side pressure drop of the fan coil heat exchanger under different flow path number combinations; and determines the target flow path number combination from the flow path number combination information based on the heat exchange and water-side pressure drop values. This embodiment of the invention, by determining the range of flow path numbers and determining the flow path number combinations based on the flow path number range and inlet / outlet water pipe installation requirements, narrows the design range of flow path combinations, reduces the amount of simulation calculation, and simultaneously calculates the heat exchange and water-side pressure drop values ​​under different flow path combination information, thereby selecting the target flow path number combination. This achieves the goal of reducing the amount of calculation while ensuring that the designed flow path combination meets the flow path design requirements of the fan coil heat exchanger, thus improving the efficiency of determining flow path combinations in fan coil heat exchangers.

[0116] The simulation computing device for the above-mentioned flow path combination can be implemented in the form of a computer program, which can be used in, for example... Figure 7 It runs on the computer device shown.

[0117] Please see Figure 7 , Figure 7 This is a schematic block diagram of a computer device provided in an embodiment of the present invention. The computer device 500 includes a processor 502, a memory, and a network interface 505 connected via a device bus 501, wherein the memory may include a storage medium 503 and internal memory 504.

[0118] The storage medium 503 can store the operating device 5031 and the computer program 5032. When the computer program 5032 is executed, it causes the processor 502 to perform a simulation calculation method for flow path combination.

[0119] The processor 502 provides computing and control capabilities to support the operation of the entire computer device 500.

[0120] The internal memory 504 provides an environment for the operation of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can perform a simulation calculation method for flow path combination.

[0121] The network interface 505 is used for network communication, such as providing data information transmission. Those skilled in the art will understand that the structures shown in the embodiments of this application are merely block diagrams of some structures related to the present invention and do not constitute a limitation on the computer device 500 to which the present invention is applied. A specific computer device 500 may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements.

[0122] The processor 502 is used to run the computer program 5032 stored in the memory to implement the simulation calculation method for flow path combination disclosed in the embodiments of the present invention.

[0123] Those skilled in the art will understand that the embodiments of the computer device shown in this application do not constitute a limitation on the specific configuration of the computer device. In other embodiments, the computer device may include more or fewer components than shown, or combine certain components, or have different component arrangements. For example, in some embodiments, the computer device may include only a memory and a processor. In such embodiments, the structure and function of the memory and processor are consistent with those shown in the above embodiments, and will not be repeated here.

[0124] It should be understood that, in this embodiment of the invention, the processor 502 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0125] In another embodiment of the present invention, a computer-readable storage medium is provided. This computer-readable storage medium may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. The computer-readable storage medium stores a computer program, wherein when executed by a processor, the computer program implements the simulation calculation method for flow path combination disclosed in the embodiments of the present invention.

[0126] Those skilled in the art will readily understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0127] In the embodiments provided by this invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Units with the same function may be grouped into one unit. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, or may be electrical, mechanical, or other forms of connection.

[0128] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0129] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0130] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this invention, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a backend server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks.

[0131] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A simulation calculation method for flow path combination, characterized in that, include: Obtain information on the structural parameters, operating parameters, and inlet / outlet water pipe installation requirements of the fan coil heat exchanger. The range of values ​​for the number of flow paths is determined based on the structural parameters and the operating condition parameters. The combination information of the number of flow paths is determined based on the range of values ​​for the number of flow paths and the installation requirements for the inlet and outlet water pipes. Calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different combinations of the number of flow paths; Based on the heat exchange and the water-side pressure drop, the target flow path combination is determined from the flow path combination information; The determination of the range of flow path numbers based on the structural parameters and the operating condition parameters includes: Based on the structural parameters and the operating parameters, the estimated value of water-side pressure drop is calculated using a first preset formula. Based on the preset upward and downward fluctuation ratios and the preset water-side pressure drop value in the operating parameters, the range of water-side pressure drop values ​​is determined. Obtain the water-side pressure drop value that falls within the specified water-side pressure drop range, and use it as the target water-side pressure drop value; The range of values ​​for the number of flow paths is determined based on the number of flow paths corresponding to the water-side pressure drop value. The step of determining the target flow path combination from the flow path combination information based on the heat exchange and the water-side pressure drop includes: Select water-side pressure drop values ​​that are lower than the preset water-side pressure drop value as target water-side pressure drop values; The heat exchange corresponding to the target water-side pressure drop value is used as the initial heat exchange. The preset heat exchange rate is obtained from the operating parameters, and the heat exchange rate that is closest to the preset heat exchange rate is selected from the initial heat exchange rate as the target heat exchange rate. The target flow path combination is determined from the flow path combination information based on the target heat exchange. The process of determining the combination information of the number of flow paths based on the range of values ​​for the number of flow paths and the installation requirements of the inlet and outlet water pipes includes: Based on the range of the number of flow paths and the structural parameters, the average number of tubes in each flow path of the fan coil heat exchanger is calculated. Based on the inlet and outlet water pipe installation requirements and the average number of pipes, calculate the number of pipes for each flow path in the flow path combination information; The number of each flow path in the flow path combination information is calculated based on the number of each flow path tube using a second preset formula.

2. The simulation calculation method for flow path combination according to claim 1, characterized in that, First preset formula: ； in, This is the estimated value of the water-side pressure drop. For friction factor, For flow rate, For density, Where L is the flow area and L is the total length of the heat exchange tubes in the flow path. Where V is the inner diameter of the heat exchange tube, m is the water flow rate, m is the number of rows of tubes in the fan coil heat exchanger, and n is the number of tubes per row of the fan coil heat exchanger. Where N is the length of a single heat exchange tube, and N is the total number of flow paths.

3. The simulation calculation method for flow path combination according to claim 1, characterized in that, The step of calculating the number of pipes in each flow path in the flow path combination information based on the inlet and outlet water pipe installation requirements information and the average number of pipes includes: Determine the odd / even information of the number of flow path pipes based on the installation requirements of the inlet and outlet water pipes; If the odd / even information of the number of flow path tubes is even, the number of each flow path tube in the flow path number combination information is calculated based on the average number of tubes according to the first preset value method. If the odd / even information of the number of flow path tubes is odd, the number of each flow path tube in the flow path number combination information is calculated based on the average number of tubes according to the second preset value method. Determine whether there are any flow path tubes less than or equal to zero among the various flow path tube counts. If so, delete the flow path tubes less than zero.

4. The simulation calculation method for flow path combination according to claim 1, characterized in that, The second preset formula: in, , , These represent the number of each flow path in the flow path combination information, where N is the total number of flow paths, m is the number of tube rows in the fan coil heat exchanger, and n is the number of tubes in each row of the fan coil heat exchanger. , , The number of each flow path tube is specified.

5. A simulation computing device for flow path combination, characterized in that, include: The heat exchanger information acquisition unit is used to acquire information on the structural parameters, operating parameters, and inlet and outlet water pipe installation requirements of the fan coil heat exchanger. The flow path number range determination unit is used to determine the flow path number range based on the structural parameters and the operating condition parameters; A flow path number combination information generation unit is used to determine the flow path number combination information based on the flow path number value range and the inlet and outlet water pipe installation requirements information; The water-side pressure drop calculation unit is used to calculate the heat exchange capacity and water-side pressure drop of the fan coil heat exchanger under different combinations of the number of flow paths. The target flow path combination determination unit is used to determine the target flow path combination from the flow path combination information based on the heat exchange and the water-side pressure drop value. The unit for determining the range of the number of flow paths includes: A calculation unit for estimating water-side pressure drop is used to calculate the estimated water-side pressure drop based on the structural parameters and the operating parameters using a first preset formula. The water-side pressure drop range determination unit is used to determine the water-side pressure drop range value based on a preset upper and lower fluctuation ratio and a preset water-side pressure drop value in the operating condition parameters. The target water-side pressure drop value generation unit is used to obtain the water-side pressure drop value within the water-side pressure drop range value, and use it as the target water-side pressure drop value. A flow path number range generation unit is used to determine the flow path number range based on the flow path number corresponding to the water-side pressure drop value. The target flow path combination determination unit includes: The target water-side pressure drop value screening unit is used to screen out water-side pressure drop values ​​that are lower than the preset water-side pressure drop value as target water-side pressure drop values. An initial heat exchange screening unit is used to select the heat exchange corresponding to the target water-side pressure drop value as the initial heat exchange. The target heat exchange determination unit is used to obtain a preset heat exchange from the operating parameters and select the heat exchange that is closest to the preset heat exchange from the initial heat exchange as the target heat exchange; A target flow path combination filtering unit is used to determine the target flow path combination from the flow path combination information based on the target heat exchange. The flow path combination information generation unit includes: The average tube count calculation unit is used to calculate the average tube count of each flow path in the fan coil heat exchanger based on the range of flow path count values ​​and the structural parameters. The flow path pipe count calculation unit is used to calculate the number of each flow path pipe in the flow path count combination information based on the inlet and outlet water pipe installation requirements information and the average pipe count; The flow path number calculation unit is used to calculate the number of each flow path in the flow path number combination information according to the number of each flow path tube using a second preset formula.

6. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the simulation calculation method for flow path combination as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, causes the processor to perform the simulation calculation method for flow path combination as described in any one of claims 1 to 4.

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