Method and system for providing information for energy-saving operation of fluid machine and computer-readable recording medium with program recorded therein

Abstract

To provide a technique capable of easily specifying a model of a fluid machine used by a user, and capable of providing the user with useful information for energy-saving operation of the fluid machine.SOLUTION: A method includes: transmitting at least a part of images of a fluid machine 5 from a terminal device 15 of a user of the fluid machine 5 to an information providing system 1; specifying a model of the fluid machine 5 from the image by the information providing system 1; and transmitting information contributing to energy-saving operation of the fluid machine 5 to the terminal device 15 of the user. Examples of the at least a part of images of the fluid machine 5 include an image of a name plate 10 of the fluid machine 5 and the whole image of the fluid machine 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a technology for providing a user with useful information for energy-saving operation of fluid machinery such as pumps and blowers, and in particular to a technology for providing information such as changes in performance of the fluid machinery when the fluid machinery is operated at variable speed. [Background technology]

[0002] Many fluid machines such as pumps and blowers are designed to operate at a constant rotational speed. For this reason, pumps are sometimes operated at a flow rate higher than the flow rate required by the user. In such cases, if the pump could be operated at a lower rotational speed, it is expected that the power consumption of the pump would be reduced.

[0003] Recently, therefore, there has been an increase in requests from users to combine inverters with fluid machinery to operate the fluid machinery at variable speeds. If a manufacturer of fluid machinery knows the specifications (or model) of the fluid machinery used by the user, it is possible to provide the user with useful information for the energy-saving operation of the fluid machinery. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-355577 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, since users are usually amateurs in the field of fluid machinery, they often do not know the specifications and models of the fluid machinery they are using, and it is often difficult for them to communicate this to the manufacturer of the fluid machinery, and as a result, the manufacturer of the fluid machinery is often unable to provide useful information to the user.

[0006] Therefore, the present invention provides a technique that enables a user to easily identify the type of fluid machinery being used and provides the user with useful information for energy-saving operation of the fluid machinery. [Means for solving the problem]

[0007] In one aspect, a method for providing information for energy-saving operation of fluid machinery is provided, the method including sending an image of at least a portion of the fluid machinery from a terminal device of a user of the fluid machinery to an information providing system, identifying the type of the fluid machinery from the image by the information providing system, and transmitting information contributing to energy-saving operation of the fluid machinery to the terminal device of the user.

[0008] In one aspect, the image of at least a portion of the fluid machinery is an image of a nameplate of the fluid machinery. In one aspect, the information providing system performs image processing on an image of the nameplate to identify at least the model of the fluid machinery indicated on the nameplate. In one aspect, the image of at least a portion of the fluid machinery is an image of the entire fluid machinery. In one aspect, the information provision system is configured to input an entire image of the fluid machinery into an estimation model and output the type of the fluid machinery from the estimation model, and the estimation model is a learned model constructed by machine learning using training data including a plurality of images of a plurality of different types of fluid machinery and the respective types of the plurality of fluid machinery.

[0009] In one aspect, the information contributing to energy-saving operation of the fluid machinery includes an estimated performance curve of the fluid machinery when the fluid machinery is combined with an inverter. In one aspect, the information that contributes to energy-saving operation of the fluid machinery includes candidates for inverters that can be combined with the fluid machinery. In one aspect, the information contributing to energy-saving operation of the fluid machinery includes a simulation result of energy-saving operation when the inverter candidate is combined with the fluid machinery. In one embodiment, the simulation results further include an installation cost of the inverter and an expected recovery period for the installation cost.

[0010] In one aspect, an information provision system is provided that provides information for energy-saving operation of fluid machinery, the information provision system comprising a storage device in which a program is stored and a processor that performs calculations in accordance with instructions contained in the program, the information provision system being configured to receive an image of at least a portion of the fluid machinery transmitted from a terminal device of a user of the fluid machinery, identify the type of the fluid machinery from the image, and transmit information that contributes to energy-saving operation of the fluid machinery to the terminal device of the user.

[0011] In one aspect, the image of at least a portion of the fluid machinery is an image of a nameplate of the fluid machinery. In one aspect, the information providing system is configured to perform image processing on an image of the nameplate to identify at least the model of the fluid machinery indicated on the nameplate. In one aspect, the image of at least a portion of the fluid machinery is an image of the entire fluid machinery. In one aspect, the information provision system is configured to input an entire image of the fluid machinery into an estimation model and output the type of the fluid machinery from the estimation model, and the estimation model is a learned model constructed by machine learning using training data including a plurality of images of a plurality of different types of fluid machinery and the respective types of the plurality of fluid machinery.

[0012] In one aspect, the information contributing to energy-saving operation of the fluid machinery includes an estimated performance curve of the fluid machinery when the fluid machinery is combined with an inverter. In one aspect, the information that contributes to energy-saving operation of the fluid machinery includes candidates for inverters that can be combined with the fluid machinery. In one aspect, the information contributing to energy-saving operation of the fluid machinery includes a simulation result of energy-saving operation when the inverter candidate is combined with the fluid machinery. In one embodiment, the simulation results further include an installation cost of the inverter and an expected recovery period for the installation cost.

[0013] In one aspect, a computer-readable recording medium is provided that stores a program that causes a computer to execute the steps of receiving an image of at least a portion of a fluid machine transmitted from a terminal device of a user of the fluid machine, identifying the type of the fluid machine from the image, and transmitting information that contributes to energy-saving operation of the fluid machine to the user's terminal device. Effect of the Invention

[0014] The information providing system can identify the model of fluid machinery used by a user from an image (e.g., an image of the nameplate of the fluid machinery or an image of the entire fluid machinery) transmitted from the user's terminal device. Thus, a user can know the model of fluid machinery they are using by simply photographing the fluid machinery. Furthermore, the user can receive information that contributes to energy-saving operation of the identified fluid machinery from the information providing system. [Brief description of the drawings]

[0015] [Figure 1] 1 is a schematic diagram showing an embodiment of an information providing system for providing information for energy-saving operation of a fluid machine; [Diagram 2] FIG. 4 is a schematic diagram showing an example of a nameplate of the pump device. [Diagram 3] FIG. 13 is a schematic diagram showing an example of an image of a plurality of candidates for a pump device displayed on the screen of a user's terminal device. [Figure 4]FIG. 13 illustrates an example of a web page (or user interface) for informing a user of information regarding a identified pump device. [Diagram 5] FIG. 5(a) is a graph showing an example of a performance curve of a pump device before being combined with an inverter, and FIG. 5(b) is a graph showing an example of an estimated performance curve of the pump device when an inverter is combined with the pump device. [Figure 6] FIG. 13 is a schematic diagram showing an example of a simulation result of energy-saving operation. [Figure 7] 1 is a flowchart illustrating an embodiment of a method for providing information for energy-saving operation of a pump device by an information providing system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic diagram showing one embodiment of an information providing system that provides information for energy-saving operation of fluid machinery. Examples of fluid machinery include a pump device that transfers liquid, a pump device that compresses gas, and a blower that sends gas. In the following description, a pump device that transfers liquid is used as the fluid machinery, but the following description can also be applied to other types of pump devices and blowers.

[0017] The information providing system 1 is connected to the Internet. The information providing system 1 is composed of at least one computer. The information providing system 1 includes a storage device 1a that stores a program and an estimation model 2, and a processor 1b that executes calculations according to instructions included in the program and the algorithm of the estimation model 2. The storage device 1a includes a main storage device such as a random access memory (RAM), and an auxiliary storage device such as a hard disk drive (HDD) or a solid state drive (SSD). Examples of the processor 1b include a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit). However, the specific configuration of the information providing system 1 is not limited to these examples.

[0018] In one embodiment, the information providing system 1 is a cloud server. In another embodiment, the information providing system 1 may be composed of multiple computers. For example, the information providing system 1 may be a combination of a web server and a cloud server.

[0019] 1 has a pump section 6 with an impeller disposed therein, an electric motor 7 that rotates the impeller, and a base 8 on which the pump section 6 and the electric motor 7 are mounted. Furthermore, the pump section 5 has a nameplate 10 on which the serial number, manufacturing year, etc. of the pump section 5 are written. The nameplate 10 is attached to the electric motor 7 of the pump section 5, or to the pump section 6, or to the base 8.

[0020] The pump device 5 shown in FIG. 1 does not include an inverter and is configured to rotate at a predetermined constant rotation speed. As a result, the flow rate and / or head of this pump device 5 at a certain operating point may differ from the flow rate and / or head desired by the user. In such a case, the user may wonder whether it is possible to operate the pump device 5 at the desired flow rate and / or head by combining an inverter with the pump device 5, and whether it is possible to save on electricity bills. Recently, there have been an increasing number of cases in which users inquire of pump device manufacturers whether it is possible to combine an inverter with their pump device for the purpose of energy-saving operation.

[0021] In order for a manufacturer to provide a user with information on an inverter suitable for the pump device 5 used by the user, it is necessary to identify the model of the pump device 5 used by the user. However, it is common for users to not know the model or serial number of the pump device 5 they are using.

[0022] Therefore, the user captures an image of the nameplate 10 of the pump apparatus 5 with a camera, and transmits the image of the nameplate 10 captured by the camera from the user's terminal device 15 via the Internet to the information provision system 1 of the manufacturer of the pump apparatus 5. The information provision system 1 receives the image of the nameplate 10 of the pump apparatus 5 transmitted from the terminal device 15.

[0023] Examples of the terminal device 15 include a smartphone, a tablet type mobile device, and a personal computer (PC). In one example, the camera is a digital camera built into a smartphone, which is an example of the user's terminal device 15. When the terminal device 15 is a smartphone, the user can capture an image of the nameplate 10 with the smartphone and transmit the image of the nameplate 10 from the smartphone to the information providing system 1 via the Internet.

[0024] There is no particular limitation on the method for transmitting the image of the nameplate 10 from the user's terminal device 15 to the information providing system 1. For example, the user's terminal device 15 may access a web page in the information providing system 1, input the image of the nameplate 10 into the web page, and upload the image of the nameplate 10 to the information providing system 1 via the Internet. In another example, the image of the nameplate 10 may be transmitted from the terminal device 15 to the information providing system 1 by email.

[0025] FIG. 2 is a schematic diagram showing an example of a nameplate 10 of a pump device 5. The information provision system 1 is configured to execute image processing on an image of the nameplate 10, read characters such as the model and serial number of the pump device 5 written on the nameplate 10, and identify the model of the pump device 5. As shown in FIG. 1, the information provision system 1 has a database 20 stored in a storage device 1a, and information on various types of pump devices (including images and specifications of each pump device) is stored in the database 20. The information provision system 1 identifies the user's pump device 5 by searching for a pump device that matches the information obtained from the characters read from the image of the nameplate 10. Search methods include a search method using AI.

[0026] Since the nameplate 10 is usually made of metal, some of the characters may be lost due to rust, dust, peeling of the lettering paint, etc. Even in such a case, the information provision system 1 is configured to comprehensively analyze information appearing on the image of the nameplate 10, including the serial number, model, manufacturing year, flow rate (l / m), head (m), and rated output (kW) of the motor, to identify the model of the pump device 5.

[0027] There may be cases where the nameplate 10 of the pump device 5 is lost, or where the characters on the nameplate are unclear due to dirt or peeling paint on the nameplate, or where the location of the nameplate 10 of the pump device 5 is unknown. In such cases, the user takes an image of the entire pump device 5 with a camera, and transmits the image of the entire pump device 5 generated by the camera from the user's terminal device 15 to the information provision system 1 of the manufacturer of the pump device 5 via the Internet.

[0028] As shown in FIG. 1, the information providing system 1 has an estimation model 2 stored in its storage device 1a. The information providing system 1 is configured to input an image of the entire pump device 5 to the estimation model 2 and output the type of the pump device 5 from the estimation model 2. The estimation model 2 is a trained model constructed by machine learning using training data. The training data includes a plurality of images of a plurality of pump devices of different types and the respective types of the plurality of pump devices. The plurality of images of the plurality of pump devices of different types included in the training data are explanatory variables, and the respective types of the plurality of pump devices included in the training data are objective variables and correct answer labels. The machine learning for constructing the estimation model 2 may be executed by the information providing system 1 or may be executed by another computer. A specific example of the machine learning is not particularly limited, but may be deep learning using a neural network, for example.

[0029] When multiple candidates for pump equipment 5 are output from the estimation model 2, the information provision system 1 displays images of the multiple candidates on the screen 15a of the user's terminal device 15, as shown in Fig. 3. The user selects a candidate corresponding to the pump equipment 5 used by the user from the multiple candidates displayed on the screen 15a of the terminal device 15, and clicks a selection button corresponding to the selected candidate. The one candidate selected by the user is transmitted from the terminal device 15 to the information provision system 1.

[0030] As described above, the information providing system 1 can identify the model of the pump device 5 used by the user from an image (e.g., an image of the nameplate 10 of the pump device 5 or an image of the entire pump device 5) transmitted from the user's terminal device 15. Therefore, the user can know the model of the pump device 5 that the user is using by simply photographing the pump device 5. Furthermore, as described below, the user can receive information that contributes to energy-saving operation of the identified pump device 5 from the information providing system 1.

[0031] The information providing system 1 is configured to transmit information that contributes to energy-saving operation of the pump apparatus 5 identified from an image (an image of the nameplate 10 or an image of the entire pump apparatus 5) to the user's terminal apparatus 15. Specifically, in response to a request from the user's terminal apparatus 15, a web page as shown in Fig. 4 is displayed on the screen 15a of the terminal apparatus 15.

[0032] Fig. 4 is a diagram showing an example of a web page (or a user interface) for informing a user of information related to the identified pump device 5. In the example shown in Fig. 4, the information related to the identified pump device 5 includes the model, serial number, and specifications of the pump device 5, an external view of the pump device 5, a cross-sectional view of the pump device 5, a performance curve of the pump device 5, and a simulation result of an energy-saving operation.

[0033] On the web page (or user interface), there are buttons corresponding to an outline drawing of the pump apparatus 5, a cross-sectional view of the pump apparatus 5, a performance curve of the pump apparatus 5, and a simulation result of energy-saving operation. When a user clicks on each button, information corresponding to the button appears on the web page. For example, when a user clicks on the button corresponding to the outline drawing of the pump apparatus 5, the outline drawing of the pump apparatus 5 appears on the web page. A user can view the outline drawing of the pump apparatus 5 on the web page using a terminal device 15 such as a smartphone or a PC.

[0034] The performance curve of the pump device 5 and the simulation result of the energy-saving operation are information that contributes to the energy-saving operation of the identified pump device 5. The performance curve of the pump device 5 is an estimated performance curve of the pump device 5 when an inverter is combined with the identified pump device 5. The inverter that can be combined with the pump device 5 varies depending on the type of the pump device 5. Therefore, the inverter that can be combined is linked in advance to each type of pump device. As shown in FIG. 1, information (type, price, manufacturer, etc.) of multiple inverters that can be combined with multiple types of pump devices is stored in the database 20 of the information providing system 1. When the type of the pump device 5 is identified, the information providing system 1 determines at least one inverter suitable for the pump device 5 from the database 20.

[0035] When the user clicks on the button (see FIG. 4) corresponding to the performance curve of the pump device 5, an estimated performance curve of the pump device 5 when the determined inverter is combined with the pump device 5 is calculated by the information providing system 1 and appears on the web page. FIG. 5(a) is a graph showing an example of the performance curve of the pump device 5 before the inverter is combined with the pump device 5, and FIG. 5(b) is a graph showing an example of the estimated performance curve of the pump device 5 when the inverter is combined with the pump device 5. In FIGS. 5(a) and 5(b), the vertical axis represents the head of the pump device 5, and the horizontal axis represents the flow rate of the pump device 5.

[0036] In FIG. 5(a), the pump device 5 rotates at a constant rotation speed. Therefore, there is only one performance curve (QH curve), and the head and the flow rate correspond uniquely. In contrast, in FIG. 5(b), the rotation speed of the pump device 5 can be changed by an inverter. Therefore, there are multiple performance curves (QH curves) corresponding to each rotation speed. If the rotation speed corresponding to the performance curve in FIG. 5(a) is 100%, the rotation speed in FIG. 5(b) can be changed within a range of 60% to 100%.

[0037] In the example shown in FIG. 5(b), when the rotation speed of the pump device 5 is reduced from 100% to 80%, the operating point of the pump device 5 can be changed from the current operating point to the target operating point. In one example, by reducing the rotation speed of the pump device 5 from 100% to 80%, the power consumption of the pump device 5 is reduced from 5.0 kW to 2.6 kW. In this way, the pump device 5 combined with an inverter can be operated at a rotation speed that can achieve the head and flow rate desired by the user, so that the pump device 5 can be operated in an energy-saving manner. The information providing system 1 provides an estimated performance curve as shown in FIG. 5(b) to the user's terminal device 15, and the user can consider introducing an inverter based on the estimated performance curve.

[0038] In one embodiment, the information provision system 1 transmits a data sheet to the user's terminal device 15 inquiring about requirements regarding the conditions under which the user will use the pump device 5, and prompts the user to input the requirements into the data sheet. The requirements to be input into the data sheet include the current operating point (current flow rate and current head) of the pump device 5 used by the user, the target operating point (target flow rate and target head) desired by the user, the operating hours per day of the pump device 5, and the number of operating days per year of the pump device 5. The data sheet with the requirements inputted is transmitted from the user's terminal device 15 to the information provision system 1.

[0039] The information providing system 1 executes a simulation of energy-saving operation based on the requirements entered in the data sheet. When the user clicks a button (see FIG. 4) corresponding to the energy-saving operation simulation result, the energy-saving operation simulation result is sent to the user's terminal device 15 and appears on a web page in the screen 15a of the terminal device 15. In one embodiment, the simulation result includes the installation cost of the inverter and the expected period for recovering the installation cost.

[0040] Fig. 6 is a schematic diagram showing an example of a simulation result of energy-saving operation. In the example shown in Fig. 6, three plans A, B, and C are shown as the simulation result. Plans A and B include the type of inverter recommended to be combined with the user's pump device 5, the installation cost of the inverter, and the expected recovery period of the inverter installation cost. In one embodiment, plans A and B may further include information related to each candidate inverter, such as not only the type of inverter, but also the manufacturer, indoor installation type, outdoor installation type, size, weight, etc.

[0041] In one embodiment, the information providing system 1 calculates the expected period for recovering the installation cost of the inverter as follows: The information providing system 1 calculates the amount of reduction in power consumption and electricity charge per year and the expected period for recovering the installation cost of the inverter from the power consumption at the current operating point of the pump device 5 before the inverter is combined, the power consumption at the target operating point of the pump device 5 combined with the inverter, the electricity charge per kWh, the operating hours per day of the pump device 5, the number of operating days per year of the pump device 5, and the installation cost of the inverter.

[0042] For example, the information providing system 1 calculates the expected period for recovering the installation cost of an inverter under the following conditions. Power consumption at the current operating point of the pump device 5 (100% rotation speed): 5.0 kW Power consumption at the target operating point of the pump device 5 (rotation speed 80%): 2.6 kW Electricity cost per kWh: XX yen Working hours per day: 10 hours Number of working days per year: 300 days Annual electricity reduction: 7,200kW Amount of electricity bill reduction per year: ○○△△ yen Inverter installation cost: △△○○ yen Expected recovery period for inverter installation costs: XX years XX months

[0043] Plan C is a plan that presents an alternative to the pump device 5 instead of the inverter. Specifically, if there is a pump device whose rated operating point is the target operating point desired by the user, the information provision system 1 may present the model of that pump device as an alternative. As in the case of presenting the inverter, the information provision system 1 may present the installation cost of the alternative to the pump device 5 and the expected period for recovering the installation cost of the alternative.

[0044] FIG. 7 is a flowchart showing an embodiment of a method for providing information for energy-saving operation of the pump device 5 by the information providing system 1. In step 1, an image of the pump apparatus 5 is generated by a camera. The image of the pump apparatus 5 is an image of the nameplate 10 of the pump apparatus 5, or an image of the entire pump apparatus 5. The camera may be a smartphone with a camera, a dedicated digital camera, or the like, and is not particularly limited.

[0045] In step 2, an image of the pump device 5 is transmitted from the user's terminal device 15 to the information providing system 1 via the Internet. The terminal device 15 may be a smartphone used to generate the image of the pump device 5, or may be the user's personal computer (PC), or may be a tablet-type mobile device.

[0046] In step 3 , the information providing system 1 receives the image of the pump device 5 sent from the terminal device 15 . In step 4, the information providing system 1 identifies the type of the pump device 5 used by the user from the image of the pump device 5. In step 5, the information providing system 1 transmits information contributing to energy-saving operation of the pump device 5 to the user's terminal device 15. The information contributing to energy-saving operation of the pump device 5 includes at least one of an estimated performance curve of the pump device 5 calculated when an inverter is combined with the pump device 5, candidates for inverters that can be combined with the pump device 5, and a simulation result of energy-saving operation when the candidate inverters are combined with the pump device 5.

[0047] A program for causing the information provision system 1 to execute steps 3 to 5 is recorded in a computer-readable recording medium, which is a non-transitory tangible item, and is provided to the information provision system 1 via the recording medium. Alternatively, the program may be input to the information provision system 1 via a communication network such as the Internet or a local area network.

[0048] As described above, the information providing system 1 can identify the model of the pump device 5 used by the user from an image (e.g., an image of the nameplate 10 of the pump device 5 or an image of the entire pump device 5) transmitted from the user's terminal device 15. Therefore, the user can know the model of the pump device 5 that the user is using by simply photographing the pump device 5. Furthermore, the user can receive information that contributes to energy-saving operation of the identified pump device 5 from the information providing system 1.

[0049] The above-described embodiment can also be applied to fluid machines other than a pump device, such as a blower.

[0050] The above-described embodiments have been described for the purpose of enabling a person having ordinary skill in the art to practice the present invention. Various modifications of the above-described embodiments are naturally possible for a person skilled in the art, and the technical idea of ​​the present invention can be applied to other embodiments. Therefore, the present invention is not limited to the described embodiments, but is to be interpreted in the broadest scope according to the technical idea defined by the claims. [Explanation of symbols]

[0051] 1 Information provision system 1a Storage device 1b Processor 5. Pumping equipment 6 Pump section 7 Electric motor 8 Base 10 Nameplate 15 Terminal Equipment 20 Database

Claims

1. A method for providing information for energy-saving operation of a fluid machine, comprising: transmitting an image of at least a part of the fluid machinery from a terminal device of a user of the fluid machinery to an information providing system; Identifying a type of the fluid machinery from the image by the information providing system; A method for transmitting information that contributes to energy-saving operation of the fluid machinery to the terminal device of the user.

2. The method of claim 1 , wherein the image of at least a portion of the fluid machinery is an image of a nameplate of the fluid machinery.

3. The method according to claim 2 , wherein the information providing system performs image processing on the image of the nameplate to identify at least the type of the fluid machinery indicated on the nameplate.

4. The method of claim 1 , wherein the image of at least a portion of the fluid machinery is an image of the entire fluid machinery.

5. The method according to claim 4, wherein the information providing system is configured to input an entire image of the fluid machinery into an estimation model and output the type of the fluid machinery from the estimation model, and the estimation model is a learned model constructed by machine learning using training data including a plurality of images of a plurality of different types of fluid machinery and the respective types of the plurality of fluid machinery.

6. The method according to claim 1 , wherein the information contributing to energy-saving operation of the fluid machinery includes an estimated performance curve of the fluid machinery when combined with an inverter.

7. The method according to claim 1 , wherein the information contributing to energy-saving operation of the fluid machinery includes candidates for inverters that can be combined with the fluid machinery.

8. The method according to claim 7 , wherein the information contributing to energy-saving operation of the fluid machinery includes a simulation result of energy-saving operation when the inverter candidate is combined with the fluid machinery.

9. The method of claim 8 , wherein the simulation results further include an installation cost of the inverter and an expected payback period for the installation cost.

10. An information providing system for providing information for energy-saving operation of a fluid machine, comprising: A storage device in which a program is stored and a processor that executes operations according to instructions included in the program, The information providing system includes: receiving an image of at least a part of the fluid machinery transmitted from a terminal device of a user of the fluid machinery; Identifying a type of the fluid machinery from the image; An information providing system configured to transmit information contributing to energy-saving operation of the fluid machinery to the terminal device of the user.

11. The information providing system according to claim 10 , wherein the image of at least a portion of the fluid machinery is an image of a nameplate of the fluid machinery.

12. The information provision system according to claim 11 , wherein the information provision system is configured to perform image processing on an image of the nameplate to identify at least the model of the fluid machinery indicated on the nameplate.

13. The information providing system according to claim 10 , wherein the image of at least a portion of the fluid machinery is an image of the entire fluid machinery.

14. The information provision system of claim 13, wherein the information provision system is configured to input an entire image of the fluid machinery into an estimation model and output the type of the fluid machinery from the estimation model, and the estimation model is a learned model constructed by machine learning using training data including a plurality of images of a plurality of different types of fluid machinery and the respective types of the plurality of fluid machinery.

15. The information providing system according to claim 10 , wherein the information contributing to energy-saving operation of the fluid machinery includes an estimated performance curve of the fluid machinery when the fluid machinery is combined with an inverter.

16. The information providing system according to claim 10 , wherein the information contributing to energy-saving operation of the fluid machinery includes candidates for inverters that can be combined with the fluid machinery.

17. 17. The information providing system according to claim 16, wherein the information contributing to energy-saving operation of the fluid machinery includes a simulation result of energy-saving operation when the inverter candidate is combined with the fluid machinery.

18. The information providing system according to claim 17 , wherein the simulation result further includes an installation cost of the inverter and an expected period for recovering the installation cost.

19. receiving an image of at least a portion of the fluid machinery transmitted from a terminal device of a user of the fluid machinery; Identifying a type of the fluid machinery from the image; A computer-readable recording medium storing a program for causing a computer to execute a step of transmitting information that contributes to energy-saving operation of the fluid machinery to the terminal device of the user.

Images