Waste heat recovery method, device, equipment and storage medium

Abstract

The present application discloses a waste heat recovery method, device, equipment, and storage medium. The waste heat recovery method includes: obtaining engine oil to be exchanged for heat; performing a heat exchange process on the engine oil to be exchanged for heat and water to be heated to obtain hot water at a first preset temperature; receiving water demand information of a water-using system; determining hot water distribution information based on the water demand information, and distributing the hot water to the corresponding water-using system based on the hot water distribution information. The present application belongs to the field of heat recovery, and the heat of the engine oil to be exchanged for heat is recycled and utilized to heat the water to be heated. The hot water is then distributed to the corresponding water-using system according to the water demand of the system, thereby improving the utilization rate of heat.

Description

Technical Field

[0001] The present application relates to the field of heat recovery, and in particular to a waste heat recovery method, device, equipment and storage medium. Background Art

[0002] During operation, a screw compressor consumes 15% to 20% of the electricity used to increase the potential energy of the air. Approximately 80% to 85% of this energy is converted into heat, which enters the compressed air and lubricating oil. This heat is then ventilated to cool the compressed air, cooled by air or water cooling, and discharged into the air. This heat, which is otherwise wasted and unused, can be recovered through heat exchange and other methods.

[0003] Currently, in the production process, the waste heat recovery device of the screw air compressor is only designed for waste heat recovery in open systems or closed systems, but cannot meet the heat demand of both open and closed systems at the same time, resulting in low heat utilization rate. Summary of the Invention

[0004] The main purpose of this application is to provide a waste heat recovery method, device, equipment and storage medium, aiming to solve the technical problem of low heat utilization in the prior art.

[0005] To achieve the above objectives, the present application provides a waste heat recovery method, which comprises:

[0006] Obtain the hot oil to be exchanged;

[0007] Performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature;

[0008] Receive water demand information of the water-waiting system;

[0009] Based on the water demand information, hot water distribution information is determined, and based on the hot water distribution information, the hot water is distributed to the corresponding water waiting system.

[0010] Optionally, the standby water system includes an open system and a closed system, the water demand information includes single-system water demand information and dual-system water demand information, and the step of determining hot water distribution information based on the water demand information includes:

[0011] If the water demand information is for a single system, the distribution information is determined to distribute the hot water to the corresponding single system waiting for water use;

[0012] If the water demand information is dual-system water demand, the distribution information is determined to distribute hot water to the open system until the open system stops demanding water, and then distribute the hot water to the closed system.

[0013] Optionally, the radiator of the closed system is arranged in the return branch of the open system, wherein the radiator is used to transfer heat to the closed system, and the return branch is a branch passage in the reflux passage.

[0014] Optionally, the step of performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature includes:

[0015] performing heat exchange on the oil to be heat exchanged to determine the heat amount of the oil to be heat exchanged;

[0016] The water to be heated is heated based on the heat to obtain hot water of the first preset temperature.

[0017] Optionally, the water to be heated includes water to be heated on a first side and water to be heated on a second side, and the step of heating the water to be heated based on the heat to obtain hot water at a first preset temperature includes:

[0018] heating the water to be heated on the first side based on the heat to obtain first-side hot water;

[0019] performing heat exchange on the first-side hot water to determine the heat amount of the first-side hot water after the heat exchange;

[0020] Based on the heat of the hot water on the first side, the water to be heated on the second side is heated to obtain hot water at the first preset temperature.

[0021] Optionally, the step of obtaining the engine oil to be heat exchanged includes:

[0022] Extract the oil after oil and gas separation from the air compressor;

[0023] Measuring the temperature of the engine oil to obtain the temperature of the engine oil;

[0024] The engine oil having a temperature higher than the second preset temperature is determined as the engine oil to be heat exchanged.

[0025] Optionally, after the step of distributing the hot water to the corresponding water-waiting system based on the hot water distribution information, the method includes:

[0026] Obtain the temperature of the cooling water to be dissipated;

[0027] determining a heat dissipation frequency based on the temperature of the cooling water to be dissipated;

[0028] Based on the heat dissipation frequency, the cooling water to be dissipated is cooled.

[0029] The present application also provides a waste heat recovery device, which includes:

[0030] An acquisition module, used for acquiring the engine oil to be heated;

[0031] a heat exchange module, configured to perform heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature;

[0032] A receiving module, used for receiving water demand information of a water-using system;

[0033] The distribution module is used to determine hot water distribution information based on the water demand information, and distribute the hot water to the corresponding water waiting system based on the hot water distribution information.

[0034] The present application also provides a waste heat recovery device, which includes: a memory, a processor, and a program stored in the memory for implementing the waste heat recovery method.

[0035] The memory is used to store a program for implementing the waste heat recovery method;

[0036] The processor is used to execute a program for implementing the waste heat recovery method to implement the steps of the waste heat recovery method.

[0037] The present application also provides a storage medium, on which is stored a program for implementing the waste heat recovery method, and the program for implementing the waste heat recovery method is executed by a processor to implement the steps of the waste heat recovery method.

[0038] The present application provides a waste heat recovery method, device, equipment, and storage medium. Compared to existing technologies that cannot meet the heat requirements of both open and closed systems, the present application comprises the following steps: obtaining engine oil to be exchanged; subjecting the engine oil to be exchanged to heat exchange with water to be heated to obtain hot water at a first preset temperature; receiving water demand information from the water-using system; determining hot water distribution information based on the water demand information; and distributing the hot water to the corresponding water-using system based on the hot water distribution information. In other words, the present application recycles the heat of the engine oil to be exchanged, heats the water to be heated, and distributes the hot water to the corresponding water-using system based on the water demand of the system, thereby improving heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work.

[0040] Figure 1 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiment of the present application;

[0041] Figure 2 This is a flow chart of the first embodiment of the waste heat recovery method of the present application;

[0042] Figure 3 This is a schematic diagram of the structure of the waste heat recovery method device of this application;

[0043] Figure 4 This is a schematic diagram of the waste heat recovery method system for this application.

[0044] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] like Figure 1 As shown, Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present application.

[0047] The terminal in the embodiment of the present application can be a PC, or it can be a smart phone, tablet computer, e-book reader, MP3 (Moving Picture Experts Group Audio Layer III, Moving Picture Experts Compression Standard Audio Layer 3) player, MP4 (Moving Picture Experts Group Audio Layer IV, Moving Picture Experts Compression Standard Audio Layer 4) player, portable computer and other portable terminal devices with display function.

[0048] like Figure 1 As shown, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0049] Optionally, the terminal may also include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, sensors include light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor may turn off the display screen and / or backlight when the mobile terminal is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; of course, the mobile terminal can also be configured with other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which will not be repeated here.

[0050] Those skilled in the art will understand that Figure 1 The terminal structure shown in the figure does not constitute a limitation to the terminal, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0051] like Figure 1 As shown, the memory 1005 as a computer storage medium may include an operating device, a network communication module, a user interface module and a waste heat recovery program.

[0052] exist Figure 1 In the terminal shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the client (user end) and communicate data with the client; and the processor 1001 can be used to call the waste heat recovery program stored in the memory 1005.

[0053] Reference Figure 2 , an embodiment of the present application provides a waste heat recovery method, the waste heat recovery method comprising:

[0054] Step S100, obtaining engine oil to be heat exchanged;

[0055] Step S200, performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water of a first preset temperature;

[0056] Step S300, receiving water demand information of a water-using system;

[0057] Step S400: Determine hot water distribution information based on the water demand information, and distribute the hot water to the corresponding water waiting system based on the hot water distribution information.

[0058] In this embodiment, the specific application scenario may be:

[0059] The factory's heat demand is divided between hot water for bathing and closed-loop heat systems. Before waste heat recovery, closed-loop heat systems relied primarily on hot air furnaces, consuming significant amounts of energy. Heat demand is twofold, and the requirements are fundamentally different: hot water for bathing represents an open system, while closed-loop heat systems dissipate heat through radiators, representing a closed system. System design must ensure the safe and stable operation of both systems. Conventional waste heat recovery typically only addresses a single heat demand, requiring systems to be either open or closed, unable to meet both requirements simultaneously.

[0060] The specific steps are as follows:

[0061] Step S100, obtaining engine oil to be heat exchanged;

[0062] In this embodiment, the device draws out the engine oil and then exchanges heat through a heat exchanger. The engine oil to be exchanged is high-temperature engine oil. The device transfers the heat of the high-temperature engine oil by exchanging heat with the high-temperature engine oil to recover waste heat. The high-temperature engine oil is engine oil with a temperature higher than 70°C.

[0063] In this embodiment, the device may obtain the oil to be heat exchanged by receiving the high-temperature oil after oil and gas separation from the air compressor.

[0064] Specifically, the step S100 includes the following steps S110-S130:

[0065] Step S110, extracting the oil after oil and gas separation from the air compressor;

[0066] In this embodiment, after the oil and gas are separated in the air compressor, the separated high-temperature gas is directly led to the original water cooling system to extract the separated high-temperature oil. The air compressor can be a screw air compressor, a rotary compressor, or any other air compressor, and no specific limitation is made here.

[0067] Step S120, measuring the temperature of the engine oil to obtain the temperature of the engine oil;

[0068] In this embodiment, the temperature of the high-temperature oil is detected by a temperature sensing element to obtain the high-temperature oil temperature, wherein the temperature sensing element is disposed in a three-way temperature control valve.

[0069] Step S130: determining the engine oil having a temperature higher than a second preset temperature as the engine oil to be heat exchanged.

[0070] In this embodiment, if the high-temperature oil temperature is higher than a second preset temperature, heat exchange is performed before entering the oil circulation system. Preferably, the second preset temperature is 70°C. It should be noted that the second preset temperature can also be set arbitrarily and is not limited here. If the high-temperature oil temperature is lower than the second preset temperature, heat exchange is not performed and the oil is directly passed through the filter to the oil circulation system.

[0071] Step S200, performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water of a first preset temperature;

[0072] In this embodiment, the heat of the oil to be heated is transferred to the water to be heated, heating the water to a first preset temperature, preferably 60°C. It should be noted that the second preset temperature can also be set arbitrarily and is not limited here. The water to be heated is the water in the circulating water tank; the oil to be heated transfers heat to the water to be heated through a heat exchanger, which can be a plate heat exchanger, a shell and tube heat exchanger, or a volumetric heat exchanger.

[0073] In this embodiment, heat transfer blocks are evenly arranged on the water pipe where the water to be heated is located to improve the heat transfer efficiency of the oil to be heated. The water pipe is composed of multiple spherical tubes connected in sequence from top to bottom, which increases the heat transfer area between the oil to be heated and the water to be heated, thereby improving the heat exchange efficiency.

[0074] In this embodiment, the oil to be exchanged for heat in the air compressor is injected into the circulation pipe, which is spirally distributed on the inner wall of the waste heat recovery device, so that the oil to be exchanged for heat can fully contact the water to be heated, so that the water to be heated can be quickly heated. At the same time, the driving shaft and the stirring rod are turned on to rotate, stirring the water to be heated, thereby accelerating the heat absorption efficiency of the water to be heated.

[0075] In this embodiment, the upper portion of the inner wall of the waste heat recovery device is stepped, thereby reducing the space in which the high-temperature oil can flow and avoiding excessive heat loss in other parts of the waste heat recovery tank device.

[0076] In this embodiment, the water to be heated enters the water storage tank from the water tank, and then under the action of the water pump, the water to be heated in the water storage tank enters the water pipe and moves from bottom to top, and then the oil to be heat exchanged passes through the outer wall of the water pipe from top to bottom, thereby performing uniform heat exchange with the water to be heated in the water pipe, greatly improving the heat transfer between the high-temperature oil and water, thereby increasing the temperature of the hot water.

[0077] Specifically, the step S200 includes the following steps S210-S220:

[0078] Step S210, performing heat exchange on the oil to be heat exchanged, and determining the heat amount of the oil to be heat exchanged after the heat exchange;

[0079] In this embodiment, the oil to be heat-exchanged passes through a heat exchanger to obtain the heat of the oil to be heat-exchanged.

[0080] Step S220: heating the water to be heated based on the heat to obtain hot water of the first preset temperature.

[0081] In this embodiment, the heat of the oil to be heat-exchanged is used to heat the water to be heated by a circulating water pump to obtain hot water of the first preset temperature.

[0082] Specifically, the step S220 includes the following steps S221-S223:

[0083] Step S221: heating the first-side water to be heated based on the heat to obtain first-side hot water;

[0084] In this embodiment, the device heats the water to be heated on the first side based on the heat to obtain first-side hot water.

[0085] Step S222, performing heat exchange on the first-side hot water to determine the heat amount of the first-side hot water after the heat exchange;

[0086] In this embodiment, the first-side hot water passes through the secondary heat exchanger to undergo heat exchange processing to obtain the heat of the first-side hot water.

[0087] Step S223: heating the water to be heated on the second side based on the heat of the hot water on the first side to obtain hot water at the first preset temperature.

[0088] In this embodiment, the heat from the hot water on the first side is transferred to the circulating water tank, which heats the water to be heated on the second side, producing hot water at the first preset temperature. When the water in the circulating water tank reaches the set temperature and there is water demand at the terminal, the hot water is automatically delivered to the water point.

[0089] In this embodiment, the device is provided with a secondary heat exchange system to isolate the terminal water from the air compressor oil system for a second time, thereby ensuring the cleanliness of the terminal water.

[0090] It should be noted that the device can also be equipped with multiple heat exchange systems to perform secondary isolation of the terminal water and the air compressor oil system, thereby ensuring the isolation of the air compressor oil and the terminal water and improving the safety of the water source.

[0091] Step S300, receiving water demand information of a water-using system;

[0092] In this embodiment, the standby water system includes an open system and a closed system. When the standby water system opens the hot water valve, water demand information is sent to the device, and the device receives the water demand information of the standby water system.

[0093] Step S400: Determine hot water distribution information based on the water demand information, and distribute the hot water to the corresponding water waiting system based on the hot water distribution information.

[0094] In this embodiment, the device determines hot water distribution information according to the water demand information, that is, the device determines how to distribute hot water to the waiting water system, and then the device distributes the hot water to the corresponding waiting water system.

[0095] Specifically, the step S400 includes the following steps S410-S420:

[0096] Step S410: If the water demand information is for a single system, the distribution information is determined to distribute hot water to the corresponding single system waiting for water use;

[0097] In step S420, if the water demand information indicates dual-system water demand, the distribution information is determined as distributing hot water to the open system until the open system stops demanding water, and then distributing hot water to the closed system.

[0098] The water demand information includes single-system water demand and dual-system water demand. The water-using system includes an open system and a closed system. Single-system water demand means that one of the open system or the closed system sends water demand information to the device. Dual-system water demand means that the open system and the closed system send water demand information to the device at the same time.

[0099] If the water demand information is for a single system, the distribution information is determined to distribute hot water to the corresponding single system waiting to use water. For example, if the open system sends the demand water and the closed system does not send the demand water, the distribution information is determined to distribute the hot water to the open system.

[0100] If the water demand information indicates dual-system water demand, the distribution information determines that hot water will be distributed to the open system until the open system stops demanding water, and then the hot water will be distributed to the closed system. For example, if both the open and closed systems send water demands, hot water will be supplied to the open system. When the open system stops demanding water, the closed system will receive the hot water distributed by the device. The water use of the open and closed systems does not affect each other.

[0101] In this embodiment, the closed system's heat sink is installed in the open system's return water branch, ensuring that the open system always has hot water. Heat usage by the heat sink has no impact on the open system's heat usage. When the open system is using heat, almost no hot water flows through the radiator branch. After the open system is shut down, the radiator branch remains in normal use. This approach improves hot water utilization and reduces overall energy costs.

[0102] After the step S400 of determining hot water distribution information based on the water demand information and distributing the hot water to the corresponding water-using system based on the hot water distribution information, the method includes the following steps A100-A300:

[0103] Step A100, obtaining the temperature of the cooling water to be dissipated;

[0104] In this embodiment, after the device completes waste heat recovery of the oil to be heat-exchanged, it is necessary to dissipate heat from the cooling water. First, the temperature of the cooling water to be dissipated is obtained through a temperature sensor.

[0105] Step A200, determining a heat dissipation frequency based on the temperature of the cooling water to be dissipated;

[0106] In this embodiment, the device dissipates heat from the cooling water to be dissipated through a cooling tower, and the device determines the heat dissipation frequency of the cooling tower based on the acquired temperature of the cooling water to be dissipated.

[0107] Step A300: Cooling the cooling water to be cooled based on the cooling frequency.

[0108] In this embodiment, the cooling tower's heat dissipation frequency is set to dissipate heat from the cooling water to be dissipated. Specifically, since heat dissipation from the cooling system decreases when the air compressor is recovering waste heat, the device controls the cooling tower's frequency based on the compressor's cooling water inlet temperature. This not only ensures the amount of heat recovered from waste heat, but also reduces the cooling tower's operating energy consumption.

[0109] In another embodiment, the device controls the number of cooling towers by adjusting the inlet temperature of the cooling water of the air compressor to dissipate heat from the cooling water to be dissipated, thereby reducing the operating energy consumption of the cooling towers.

[0110] The present application provides a waste heat recovery method, device, equipment, and storage medium. Compared to existing technologies that cannot meet the heat requirements of both open and closed systems, the present application comprises the following steps: obtaining engine oil to be exchanged; subjecting the engine oil to be exchanged to heat exchange with water to be heated to obtain hot water at a first preset temperature; receiving water demand information from the water-using system; determining hot water distribution information based on the water demand information; and distributing the hot water to the corresponding water-using system based on the hot water distribution information. In other words, the present application recycles the heat of the engine oil to be exchanged, heats the water to be heated, and distributes the hot water to the corresponding water-using system based on the water demand of the system, thereby improving heat utilization.

[0111] Based on the above first embodiment, the present application also provides another embodiment, referring to Figure 3 and Figure 4 The present application also provides a waste heat recovery method, which includes: the waste heat recovery device is respectively connected to the screw air compressor, the cooling system, the starting system and the closed system, wherein the bathroom is the open system in this embodiment, and the outdoor pipeline containing the radiator system is the closed system in this embodiment. The device is designed as a secondary heat exchange system, and a set of waste heat recovery devices is added at the outlet of the crude oil line system of each screw air compressor. When the air compressor is running, the waste heat recovery device detects that the oil temperature of the air compressor reaches the set value of 70°C, and the circulating water pump on the primary side and the circulating water pump on the secondary side of the plate heat exchanger are started at the same time to circulate hot water in the heating water tank. When the circulating water tank temperature reaches the set point of 60°C, the primary and secondary circulating water pumps stop running, and the air compressor heat continues to be dissipated through the existing cooling system. When the temperature of the water to be heated in the tank falls below 60°C, the primary and secondary circulating water pumps restart until the temperature reaches the set point again. Two primary and secondary circulating water pumps are installed, one in use and one in backup. When the water in the circulating water tank reaches the set point and there is water demand at the terminal, hot water is automatically delivered to the point of use. Hot water is consumed at the terminal in two distinct ways: for the open system and for the radiators in the closed system. To ensure safe and stable water supply for both types of hot water, the closed system's heat dissipation device is installed in the open system's return branch, ensuring that the open system always has hot water and that heat dissipation by the heat dissipation device has no impact on the open system's heat consumption. When the open system is in use, almost no hot water flows through the radiator branch. After the open system stops, the radiator branch resumes normal use. This approach improves hot water utilization and reduces overall energy costs.

[0112] If the water demand information is for a single system, the distribution information is determined to distribute hot water to the corresponding single system waiting to use water. For example, if the open system sends the demand water and the closed system does not send the demand water, the distribution information is determined to distribute the hot water to the open system.

[0113] If the water demand information indicates dual-system water demand, the distribution information determines that hot water will be distributed to the open system until the open system stops demanding water, and then the hot water will be distributed to the closed system. For example, if both the open and closed systems send water demands, hot water will be supplied to the open system. When the open system stops demanding water, the closed system will receive the hot water distributed by the device. The water use of the open and closed systems does not affect each other.

[0114] The water tank supplies water to the open system and the closed system radiator system. Two water pumps are set up, one for use and one for backup, and variable frequency constant pressure control is adopted to ensure stable water use at the water points.

[0115] After the waste heat of the air compressor is recovered, the amount of heat dissipated by the air compressor to the cooling water system is reduced. In order to further reduce the overall energy consumption of the system, the air compressor cooling water system is controlled and modified so that the number of cooling towers can be adjusted according to the air compressor cooling water inlet temperature and the frequency conversion operation can be carried out to reduce the overall energy consumption of the air compressor system.

[0116] The present application also provides a waste heat recovery device, which includes:

[0117] An acquisition module, used for acquiring the engine oil to be heated;

[0118] a heat exchange module, configured to perform heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature;

[0119] A receiving module, used for receiving water demand information of a water-using system;

[0120] The distribution module is used to determine hot water distribution information based on the water demand information, and distribute the hot water to the corresponding water waiting system based on the hot water distribution information.

[0121] Optionally, the distribution module includes:

[0122] A first distribution module is configured to determine the distribution information as distributing hot water to a corresponding single system waiting for water use if the water demand information is a single system water demand;

[0123] The second distribution module is used to determine the distribution information as distributing hot water to the open system if the water demand information is dual-system water demand, until the open system stops demanding water, and then distribute the hot water to the closed system.

[0124] Optionally, the heat exchange module includes:

[0125] a heat exchange processing module, configured to perform heat exchange on the oil to be heat exchanged and determine the heat amount of the oil to be heat exchanged;

[0126] The heating module is used to heat the water to be heated based on the heat to obtain hot water at the first preset temperature.

[0127] Optionally, the heating module includes:

[0128] a first heating module, configured to heat the water to be heated on the first side based on the heat to obtain first-side hot water;

[0129] A first-side heat exchange module is configured to perform heat exchange on the first-side hot water and determine the heat amount of the first-side hot water after the heat exchange;

[0130] The second heating module is used to heat the water to be heated on the second side based on the heat of the hot water on the first side, so as to obtain hot water at the first preset temperature.

[0131] Optionally, the acquisition module includes:

[0132] Extraction module, used to extract the oil after oil and gas separation from the air compressor;

[0133] A temperature measurement module, used to measure the temperature of the engine oil to obtain the temperature of the engine oil;

[0134] The determination module is configured to determine the engine oil having a temperature higher than a second preset temperature as the engine oil to be heat exchanged.

[0135] The waste heat recovery device further comprises:

[0136] A cooling water temperature acquisition module is used to obtain the temperature of the cooling water to be dissipated;

[0137] A frequency determination module, configured to determine a heat dissipation frequency based on the temperature of the cooling water to be dissipated;

[0138] The heat dissipation module is used to dissipate heat for the cooling water to be dissipated based on the heat dissipation frequency.

[0139] The specific implementation of the waste heat recovery device of the present application is basically the same as the above-mentioned embodiments of the waste heat recovery method, and will not be repeated here.

[0140] The present application also provides a waste heat recovery device, which includes: a memory, a processor, and a program stored in the memory for implementing the waste heat recovery method.

[0141] The memory is used to store a program for implementing the waste heat recovery method;

[0142] The processor is used to execute a program for implementing the waste heat recovery method to implement the steps of the waste heat recovery method.

[0143] The specific implementation of the waste heat recovery equipment of the present application is basically the same as the above-mentioned embodiments of the waste heat recovery method, and will not be repeated here.

[0144] The present application also provides a storage medium, on which is stored a program for implementing the waste heat recovery method, and the program for implementing the waste heat recovery method is executed by a processor to implement the steps of the waste heat recovery method.

[0145] The specific implementation of the storage medium of the present application is basically the same as the above-mentioned embodiments of the waste heat recovery method, and will not be repeated here.

[0146] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0147] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0149] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A waste heat recovery method, characterized in that: The waste heat recovery method comprises: Obtain the hot oil to be exchanged; Performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature; Receive water demand information of a standby water system, wherein the standby water system includes an open system and a closed system, and the water demand information includes single-system water demand information and dual-system water demand information; Determining hot water distribution information based on the water demand information, and distributing the hot water to corresponding water-using systems based on the hot water distribution information; If the water demand information is for a single system, the distribution information is determined to distribute the hot water to the corresponding single system waiting for water use; If the water demand information is for dual-system water demand, the distribution information is determined to distribute hot water to the open system until the open system stops demanding water, and then distribute the hot water to the closed system, wherein the radiator of the closed system is arranged in the return branch of the open system, the radiator is used to transfer heat to the closed system, and the return branch is a branch passage in the reflux passage.

2. The waste heat recovery method according to claim 1, characterized in that: The step of performing heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature includes: Performing heat exchange on the oil to be heat exchanged, and determining the heat amount of the oil to be heat exchanged after the heat exchange; The water to be heated is heated based on the heat to obtain hot water of the first preset temperature.

3. The waste heat recovery method according to claim 2, characterized in that: The water to be heated includes water to be heated on a first side and water to be heated on a second side. The step of heating the water to be heated based on the heat to obtain hot water at a first preset temperature includes: heating the water to be heated on the first side based on the heat to obtain first-side hot water; performing heat exchange on the first-side hot water to determine the heat amount of the first-side hot water after the heat exchange; Based on the heat of the hot water on the first side, the water to be heated on the second side is heated to obtain hot water at the first preset temperature.

4. The waste heat recovery method according to claim 1, wherein: The step of obtaining the engine oil to be heat exchanged comprises: Extract the oil after oil and gas separation from the air compressor; Measuring the temperature of the engine oil to obtain the temperature of the engine oil; The engine oil having a temperature higher than the second preset temperature is determined as the engine oil to be heat exchanged.

5. The waste heat recovery method according to claim 1, characterized in that: After the step of distributing the hot water to the corresponding water-waiting system based on the hot water distribution information, the method includes: Obtain the temperature of the cooling water to be dissipated; determining a heat dissipation frequency based on the temperature of the cooling water to be dissipated; Based on the heat dissipation frequency, the cooling water to be dissipated is cooled.

6. A waste heat recovery device, characterized in that: The waste heat recovery device comprises: An acquisition module, used for acquiring the engine oil to be heated; a heat exchange module, configured to perform heat exchange processing on the oil to be exchanged with the water to be heated to obtain hot water at a first preset temperature; A receiving module, configured to receive water demand information of a standby water system, wherein the standby water system includes an open system and a closed system, and the water demand information includes single-system water demand information and dual-system water demand information; a distribution module, configured to determine hot water distribution information based on the water demand information, and distribute the hot water to corresponding water-waiting systems based on the hot water distribution information; If the water demand information is for a single system, the distribution information is determined to distribute the hot water to the corresponding single system waiting for water use; If the water demand information is for dual-system water demand, the distribution information is determined to distribute hot water to the open system until the open system stops demanding water, and then distribute the hot water to the closed system, wherein the radiator of the closed system is arranged in the return branch of the open system, the radiator is used to transfer heat to the closed system, and the return branch is a branch passage in the reflux passage.

7. A waste heat recovery device, characterized in that: The waste heat recovery device includes: a memory, a processor, and a program stored in the memory for implementing the waste heat recovery method. The memory is used to store a program for implementing the waste heat recovery method; The processor is used to execute a program for implementing the waste heat recovery method to implement the steps of the waste heat recovery method according to any one of claims 1 to 5.

8. A storage medium, characterized in that: The storage medium stores a program for implementing the waste heat recovery method, and the program for implementing the waste heat recovery method is executed by a processor to implement the steps of the waste heat recovery method according to any one of claims 1 to 5.

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