Energy supply system for ship, energy management method, and electronic device

Abstract

The present disclosure provides an energy supply system for a ship, an energy management method, and an electronic device. The energy supply system comprises: an energy output end configured to be externally connected to a ship load; at least two stages of energy subsystems configured to provide energy for the ship load by means of the energy output end, wherein at least one of the at least two stages of energy subsystems convert waste heat generated during the operation of a ship device into energy; and a processor, monitoring the energy requirements of the ship load, selecting, from among the at least two stages of energy subsystems, a target energy subsystem matching the energy requirements, and controlling the target energy subsystem to provide energy for the ship load. According to the present disclosure, the energy requirements of a ship load can be monitored in real time, and an energy subsystem matching the energy requirements is controlled to provide energy for the ship load, thereby satisfying the energy requirements of the ship load. In addition, the energy subsystem can convert waste heat generated by a ship device into energy, thereby fully utilizing the waste heat, and thus improving the overall thermal efficiency of the ship.

Description

Ship's energy supply system, energy management methods, and electronic equipment Technical Field

[0001] This disclosure relates to an energy supply system, and more particularly to an energy supply system, energy management method, and electronic equipment for ships. Background Technology

[0002] The requirements to reduce greenhouse gas emissions and the increasingly serious environmental pollution problem have put enormous pressure on the shipping industry. At the same time, reducing fuel consumption and saving energy are also receiving widespread attention as important means to control ship operating costs and achieve green and sustainable development.

[0003] Currently, ships, especially large ocean-going cruise ships, have high energy demands in terms of heat, cooling, and electricity. These demands vary significantly depending on the season and operating conditions, and ships also emit substantial amounts of waste heat. Improving the overall thermal efficiency of ships, enhancing the economic performance of ship propulsion, meeting EEDI (Energy Efficiency Design Index) requirements, and reducing carbon emissions are urgent issues that need to be addressed.

[0004] Summary of the Invention

[0005] The technical problem to be solved by this disclosure is to overcome the above-mentioned defects in the prior art and provide a ship energy supply system, energy management method, and electronic equipment.

[0006] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0007] Firstly, a ship energy supply system is provided, comprising:

[0008] Energy output end, used for connecting external ship loads;

[0009] At least two energy subsystems are provided for supplying energy to the ship's load through the energy output terminal, and at least one of the at least two energy subsystems converts waste heat generated during the operation of the ship's equipment into energy;

[0010] The processor monitors the energy demand of the ship's load, selects a target energy subsystem from the at least two energy subsystems that matches the energy demand, and controls the target energy subsystem to provide energy to the ship's load.

[0011] Optionally, the waste heat includes high-temperature flue gas with a temperature greater than a first temperature threshold and / or high-temperature water with a temperature greater than a second temperature threshold; the at least two-stage energy subsystem includes:

[0012] The first-stage energy subsystem has its input end connected to the high-temperature flue gas output end of the ship's equipment, and its output end connected to the energy output end; the first-stage energy subsystem is used to convert the high-temperature flue gas into energy.

[0013] And / or, a second-stage energy subsystem, wherein the input of the second-stage energy subsystem is connected to the high-temperature water output of the ship's equipment, and the output of the second-stage energy subsystem is connected to the energy output; the second-stage energy subsystem is used to convert the high-temperature water into energy;

[0014] And / or, a third-level energy subsystem, the output of which is connected to the energy output terminal; the third-level energy subsystem is used to output self-generated energy to the energy output terminal.

[0015] Optionally, the first-stage energy subsystem is also connected to the second-stage energy subsystem via a first heat exchanger and a first valve; the processor is electrically connected to the first valve.

[0016] Optionally, the first-level energy subsystem includes:

[0017] The first energy conversion branch includes a first pipeline and a waste heat power generation device disposed on the first pipeline; one end of the first pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the first pipeline is connected to the input end of the waste heat power generation device, which is also electrically connected to an energy output end; the waste heat power generation device is used to convert the high-temperature flue gas into electrical energy.

[0018] And / or, a second energy conversion branch, the second energy conversion branch including a second pipeline and an absorption chiller unit disposed on the second pipeline; one end of the second pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the second pipeline is connected to the output end of the second-stage energy subsystem; the absorption chiller unit is used to convert the high-temperature flue gas into cold gas;

[0019] And / or, a third energy conversion branch, the third energy conversion branch including a third pipeline and a heat storage tank disposed on the third pipeline; one end of the third pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the third pipeline is connected to the output end of the second-stage energy subsystem; the heat storage tank is used to store excess waste heat of the first-stage energy subsystem;

[0020] And / or, a fourth energy conversion branch, the fourth energy conversion branch including a fifth pipeline and an exhaust heat exchanger disposed on the fifth pipeline, one end of the fifth pipeline being connected to the input end of the first-stage energy subsystem, and the other end of the third pipeline being connected to the output end of the first-stage energy subsystem.

[0021] Optionally, if the first-level energy subsystem includes the third energy conversion branch, the energy supply system further includes a solar collector; the solar collector is used to collect solar heat and store it in the heat storage tank.

[0022] Optionally, if the first-stage energy subsystem includes the third energy conversion branch, the thermal storage tank is connected to the second-stage energy subsystem via a second heat exchanger;

[0023] And / or, the input end of the second heat exchanger is provided with a first pump; the processor is electrically connected to the first pump;

[0024] And / or, the output end of the second heat exchanger is provided with a second pump; the processor is electrically connected to the second pump;

[0025] And / or, the second energy conversion branch is connected to the waste heat power generation device via a second valve; the second valve is electrically connected to the processor.

[0026] Optionally, the second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger disposed on the fifth pipeline.

[0027] Optionally, the third energy conversion branch includes a sixth pipeline and a hot water heater, one end of the sixth pipeline is connected to the output end of the hot water heater, and the other end of the sixth pipeline is connected to the energy output end.

[0028] Optionally, the energy subsystem is assigned a priority; the processor selects a target energy subsystem that matches the energy requirement based on the priority.

[0029] In a second aspect, an energy management method is provided, applied to the energy supply system of the ship described in the first aspect; the energy management method includes:

[0030] Monitor the energy requirements of the ship's load;

[0031] Select a target energy subsystem from the at least two energy subsystems that matches the energy demand, and control the target energy subsystem to provide energy to the ship load.

[0032] Thirdly, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and for running on the processor, characterized in that the processor implements the energy management method described in the second aspect when executing the computer program.

[0033] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0034] The positive and progressive effects of this disclosure are as follows: This disclosure can detect the energy demand of the ship's load in real time and control an energy subsystem that matches the energy demand to provide energy to the ship's load, thus meeting the ship's energy requirements. Furthermore, the energy subsystem can convert waste heat generated during the operation of ship equipment into energy to provide to the ship's load, achieving full utilization of waste heat, thereby improving the ship's overall thermal efficiency and achieving the goal of reducing energy consumption and ship emissions. Attached Figure Description

[0035] Figure 1 is a schematic diagram of a ship's energy supply system provided in an exemplary embodiment of the present disclosure;

[0036] Figure 2 is a schematic diagram of the structure of a ship's energy supply system provided in an exemplary embodiment of the present disclosure;

[0037] Figure 3 is a schematic diagram of the structure of another ship energy supply system provided in an exemplary embodiment of the present disclosure;

[0038] Figure 4 is a flowchart of an energy management method provided by an exemplary embodiment of the present disclosure;

[0039] Figure 5 is a schematic diagram of the structure of an electronic device provided in an exemplary embodiment of this disclosure. Detailed Implementation

[0040] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0041] The prefixes such as "first" and "second" used in this disclosure are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this disclosure does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not be construed as an unnecessary limitation. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0042] Ships, especially large ocean-going cruise ships, have high energy demands for heat, cooling, and electricity, which vary significantly across different seasons and operating conditions. For example, peak hot water usage in cabins occurs early and late in the day, while hot water consumption in the galley and dining room is primarily during meal preparation, and laundry usage is mostly at night. Statistics show that waste heat loss from ship engines (ship equipment) can reach 30-50%, and this waste heat loss varies considerably across different seasons and operating conditions. The load on ship engines differs depending on whether they are waiting for passengers in port, departing for voyages, cruising at sea, or safely returning to port in an emergency, resulting in varying waste heat losses. New energy sources such as marine solar energy are widely distributed, easily accessible at sea, have enormous potential, and their related utilization technologies are becoming increasingly mature. Failure to rationally utilize marine solar energy leads to waste. Therefore, it is necessary to develop an intelligent, multi-level heat management energy supply system for ships to fully recover and utilize waste heat, achieving intelligent automatic control of graded recovery and management of waste heat, and intelligent switching between different operating modes.

[0043] Referring to Figures 1 and 2, the ship energy supply system provided in this embodiment includes an energy output terminal A, a processor 11, and at least two levels of energy subsystems 12. The processor 11 is connected to each level of energy subsystem 12, and specifically, the processor 11 is connected to the components and / or devices included in each level of energy subsystem 12. Components include, for example, valves and pumps. Devices include, for example, energy conversion devices.

[0044] Energy output terminal A is used to connect to external ship loads. Ship loads can be any load on the ship that requires energy supply, such as heating systems that require heat supply or electrical appliances that require electricity supply. The number of energy output terminals A included in the energy supply system can be set according to actual needs, and the interface type of energy output terminal A matches the interface type of the ship load.

[0045] At least two energy subsystems 12 are used to provide energy to the ship's load through the energy output terminal A, and at least one of the at least two energy subsystems converts the waste heat generated during the operation of the ship's equipment into energy.

[0046] The number of energy subsystems included in the energy supply system can be set according to actual needs, and can be two, three, four, or even more. All or some of the energy subsystems included in the energy supply system are equipped with energy conversion devices, capable of converting waste heat generated during the operation of ship equipment into energy to supply the ship's load. Of course, different energy subsystems can utilize the same or different sources of waste heat; this disclosure does not impose any particular limitation on this. Energy conversion devices include, for example, heat exchangers, generators, absorption chillers, and waste boilers.

[0047] In cases where some energy subsystems include energy conversion devices, the remaining energy subsystems may include energy-consuming power generation devices. These devices generate the energy required by the ship's load by consuming energy and then supply it to the load. Examples of energy-consuming power generation devices include hot water boilers and boilers.

[0048] Marine equipment may include, for example, engines and diesel engines. Waste heat includes high-temperature flue gas and / or high-temperature water emitted by marine equipment. High-temperature flue gas is flue gas with a temperature greater than a first temperature threshold, which can be set according to actual conditions, for example, 100°C. High-temperature water is water with a temperature greater than a second temperature threshold, which can be set according to actual conditions, for example, 80°C.

[0049] For example, the high-temperature flue gas emitted by the engine can reach [300℃, 400℃]. This high-temperature flue gas can be converted into saturated steam at 180℃ or high-pressure hot water at 120℃ for use by the ship's load / user through a waste boiler (energy conversion device). The high-temperature cooling water from the diesel engine's cylinder liners can be converted into high-temperature water at 90℃ through a heat exchanger (energy conversion device) for use by the ship's load / user. In this embodiment, waste heat of different temperatures and types can be recovered to the greatest extent possible, achieving cascaded recovery of waste heat and improving recovery efficiency.

[0050] The processor 11 monitors the energy demand of the ship's load, selects a target energy subsystem that matches the energy demand from at least two energy subsystems, and controls the target energy subsystem to provide energy to the ship's load.

[0051] The target energy subsystem is the selected energy subsystem that provides energy to the ship's load. Understandably, the choice of which energy subsystem to use to provide energy to the ship's load is determined by the energy supply capacity of the subsystem and the energy requirements of the ship's load. The processor can monitor the energy requirements of the ship's load in real time and intelligently switch between different operating modes to provide the necessary energy to the ship.

[0052] The energy supply system in this embodiment can detect the energy demand of the ship's load in real time and control the energy subsystem that matches the energy demand to provide energy to the ship's load, thus meeting the ship's energy requirements. Furthermore, the energy subsystem can convert waste heat generated during the operation of ship equipment into energy to supply the ship's load, achieving full utilization of waste heat, thereby improving the ship's overall thermal efficiency and achieving the goal of reducing energy consumption and ship emissions.

[0053] In one embodiment, the processor 11 is equipped with an intelligent control system, which enables intelligent automatic control of graded heat recovery and management, and intelligent switching between different operating modes.

[0054] In one embodiment, referring to Figure 2, the at least two-stage energy subsystem includes at least one of the following: a first-stage energy subsystem, a second-stage energy subsystem, and a third-stage energy subsystem. The input of the first-stage energy subsystem is connected to the high-temperature flue gas output of the ship's equipment, and its output is connected to an energy output terminal. The first-stage energy subsystem is capable of utilizing the high-temperature flue gas and converting it into energy. The input of the second-stage energy subsystem is connected to the high-temperature water output of the ship's equipment, and its output is connected to the energy output terminal. The second-stage energy subsystem is capable of converting the high-temperature water into energy. The output of the third-stage energy subsystem is connected to the energy output terminal. The third-stage energy subsystem requires energy to produce its own energy, which is then output to the energy output terminal. The energy consumed by the third-stage energy subsystem may include, but is not limited to, coal, carbon, and electricity.

[0055] Understandably, energy demand includes both energy type and demand quantity. Energy type can include, but is not limited to, heat, cooling, and electricity. Matching refers to matching both energy type and demand quantity. For example, suppose the first-level energy subsystem can provide heat, electricity, and cooling with a maximum heat supply of E1; the second-level energy subsystem can provide heat with a maximum heat supply of E2; and the third-level energy subsystem can provide heat with a maximum heat supply of E3, where E3 > E1 + E2. If the ship's load requires electricity, the first-level energy subsystem is controlled to convert high-temperature flue gas into electricity and supply it to the ship's load. If the ship's load requires heat, with a heat demand e > E1 and e < E1 + E2, the first-level energy subsystem is controlled to convert high-temperature flue gas into heat and supply it to the ship's load, while the second-level energy subsystem is controlled to convert high-temperature water into heat and supply it to the ship's load.

[0056] It should be noted that Figure 2 only shows a 3-level energy subsystem and 3 ship loads (ship load a, ship load b, and ship load c). In actual applications, the number of energy subsystems and ship loads can be set according to actual needs.

[0057] In this embodiment, on the one hand, the first-stage and second-stage energy subsystems convert the high-temperature flue gas and water discharged from the ship's equipment into energy, which is then supplied to the ship's load. This achieves the rational utilization of high-temperature flue gas and water, and improves the overall thermal efficiency of the ship by integrating multiple energy-saving methods. On the other hand, it realizes intelligent automatic control of the graded recovery and multi-level management of high-temperature flue gas and water, and intelligently switches different operating modes according to the needs of the ship's load to provide energy to the ship's load, achieving sufficient energy supply. This improves the economic performance of the ship's propulsion, meets the EEDI (Energy Efficiency Design Index) requirements, and reduces carbon emissions.

[0058] In other implementations, energy subsystems at different levels can also provide energy to each other. For example, the first-level energy subsystem can provide energy to the second-level and third-level energy subsystems.

[0059] In one embodiment, the first-level energy subsystem includes at least one of the following: a first energy conversion branch, a second energy conversion branch, a third energy conversion branch, and a fourth energy conversion branch.

[0060] The first energy conversion branch includes a first pipeline and a waste heat power generation device installed on the first pipeline. One end of the first pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the first pipeline is connected to the input end of the waste heat power generation device. The waste heat power generation device is also electrically connected to the energy output end. The waste heat power generation device is used to convert the high-temperature flue gas into electrical energy and supply power to the ship's loads through the energy output end. The waste heat power generation device can be integrated into the ship's power grid to supplement the ship's loads' power needs.

[0061] The second energy conversion branch includes a second pipeline and an absorption chiller unit installed on the second pipeline. One end of the second pipeline is connected to the input end of the first-stage energy subsystem, and the other end is connected to the output end of the second-stage energy subsystem. The absorption chiller unit is used to convert high-temperature flue gas into cool air. During summer operation, the absorption chiller unit starts up and converts high-temperature flue gas into cool air to supplement the ship's large demand for cool air supply.

[0062] The third energy conversion branch includes a third pipeline and a heat storage tank installed on the third pipeline; one end of the third pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the second-level energy subsystem; the heat storage tank is used to store excess waste heat from the first-level energy subsystem for outputting heat when the ship load or other energy subsystems have heat usage requirements.

[0063] The fourth energy conversion branch includes a fourth pipeline and an exhaust heat exchanger installed on the fourth pipeline. One end of the fourth pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the fourth pipeline is connected to the output end of the first-stage energy subsystem. The exhaust heat exchanger can convert the waste heat of high-temperature flue gas into thermal energy to provide power to at least one of the following: a waste heat power generation unit, an absorption chiller, a thermal storage tank, a second-stage energy subsystem, and a load vessel.

[0064] To enable the fourth energy conversion branch to supply energy to the second-stage energy subsystem, the first-stage energy subsystem is connected to the second-stage energy subsystem via a first heat exchanger and a first valve. The processor is electrically connected to the first valve, and by controlling the opening of the first valve, the processor enables the exhaust heat exchanger of the fourth energy conversion branch to supply heat energy to the second-stage energy subsystem.

[0065] In this embodiment, the energy requirements of various types of ship loads (thermal, electrical, and cooling) can be met, realizing the combined energy supply of thermal, electrical, and cooling systems, maximizing the overall thermal efficiency of the ship, and achieving the goal of reducing energy consumption and ship emissions.

[0066] In one embodiment, where the first-level energy subsystem includes a third energy conversion branch, the energy supply system further includes a solar collector; the solar collector is used to collect solar heat and store it in a heat storage tank.

[0067] In this embodiment, new clean energy sources are coupled and energy storage technology is combined to further reduce the total fuel consumption of ships, improve the overall thermal efficiency of ships, reduce energy consumption and reduce ship emissions.

[0068] In one embodiment, the thermal storage tank can be connected to the second-stage energy subsystem via a second heat exchanger. When the energy conversion devices of the first and second-stage energy subsystems cannot meet the energy demands of the ship's load, the thermal storage tank provides heat to the second-stage energy subsystem, which then supplies the heat to the ship's load. This compensates for the mismatch between the ship's load's changing thermal energy demands and the changes in waste heat from the ship's equipment, ensuring the stability of the heating capacity as much as possible.

[0069] In other implementations, solar collectors can also be combined with generators to generate solar power, which can then be used to power the ship's loads.

[0070] In one embodiment, the second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger (WHR heat exchanger) disposed on the fifth pipeline. The WHR heat exchanger is capable of recovering the waste heat of the high-temperature water discharged from the engine and converting it into heat, which is then supplied to various ship loads or other energy subsystems on board via the fifth pipeline.

[0071] In one embodiment, the third-level energy subsystem includes a sixth pipeline and a hot water heater, with one end of the sixth pipeline connected to the output end of the hot water heater and the other end of the sixth pipeline connected to the energy output end.

[0072] In this embodiment, the hot water boiler can supplement heat, thereby ensuring the stability of the heating capacity as much as possible when the changes in the heat energy demand of the ship's load and the changes in the waste heat of the ship's equipment do not match, thus meeting the heat energy demand of the ship's load and ensuring the stable operation of the system.

[0073] In one embodiment, energy subsystems are prioritized. The processor selects a target energy subsystem that matches the thermal energy demand based on the priority. The priority of each energy subsystem can be set according to the actual situation. For example, the priority of an energy subsystem containing an energy conversion device is higher than that of an energy subsystem containing a power consumption device. The processor prioritizes the operation of the energy subsystem containing the energy conversion device and provides energy to the ship's load.

[0074] For example, assuming the priority of the second-level energy subsystem, the first-level energy subsystem, and the third-level energy subsystem decreases in that order, the second-level energy subsystem is prioritized to provide energy to the ship's load. If the second-level energy subsystem cannot meet the energy demand of the ship's load, the first-level energy subsystem or a combination of the first-level and second-level energy subsystems is controlled to provide energy to the ship's load. If neither the second-level nor the first-level energy subsystem can meet the energy demand of the ship's load, the third-level energy subsystem is controlled to provide energy to the ship's load.

[0075] In one embodiment, the energy conversion branches included in the first-level energy subsystem are assigned priorities. The processor controls the operating state of the energy conversion branches according to their priorities. The priority of each energy conversion branch can be set according to the actual situation.

[0076] For example, the first energy conversion branch has a higher priority than the second energy conversion branch, and the second energy conversion branch has a higher priority than the third energy conversion branch. When there is no heat demand or the heat demand is less than the heat that the second energy conversion branch can provide, the processor can control the operation of the second energy conversion branch to provide cooling for ship loads with cooling needs. When there is neither heat demand nor cooling demand, or when the waste heat required for both heat and cooling demands is less than the waste heat discharged by the engine (i.e., there is excess waste heat), the processor can store the excess waste heat in a heat storage tank for use when needed.

[0077] In one embodiment, to ensure the effective operation of the energy supply system, the system also includes a heat exchanger, and valves and pumps are installed on each pipeline. The processor, or an intelligent control system deployed within it, controls the energy subsystem by real-time assessment of waste heat emissions from ship equipment and the energy demands of the ship's load, and real-time monitoring of the physical properties of various locations within the energy supply system. This allows for the rational control of valve opening and closing and the start and stop of equipment on the pipelines, thereby enabling the switching of different operating modes. The working process of the energy supply system is further explained below with reference to Figure 3. In Figure 3, dashed lines represent electrical connections between components / devices, and solid lines represent pipeline connections.

[0078] Processor 11 prioritizes the control of the second-level energy subsystem to provide thermal energy for the ship's loads. The second-level energy subsystem includes a WHR heat exchanger 2 that recovers the waste heat from the engine's high-temperature flue gas to provide heat for the second-level energy subsystem. The second-level energy subsystem supplies heat to ship loads a, b, c, etc., to meet the thermal energy requirements of the ship's loads.

[0079] When the heat supply available from the second-stage energy subsystem is less than the energy demand of the ship's load, the processor 11 assesses the physical properties such as flow rate and temperature at various points in the first-stage energy subsystem and controls the exhaust heat exchanger of the fourth energy conversion branch to convert the high-temperature flue gas into heat energy, which is then supplied to the second-stage energy subsystem by the first-stage energy subsystem. Specifically, the processor 11 controls the opening of the first valve 14 so that the first-stage energy subsystem supplies heat energy to the second-stage energy subsystem through the first heat exchanger 7; and / or, the processor 11 activates the first pump 15 and the second pump 16 to supply heat from the heat storage tank 5 to the second-stage energy subsystem through the second heat exchanger 8.

[0080] When the ship's load heat energy demand is high in winter, the third pump 19 and hot water boiler 9 are turned on. At this time, the third-level energy subsystem is in operation, thereby ensuring that the system can meet the ship's load heat energy demand throughout the entire life cycle of the ship's operation.

[0081] The exhaust heat exchanger 1 recovers the waste heat from the high-temperature flue gas discharged from the engine to provide heat for the first-stage energy subsystem. The heat from the first-stage energy subsystem is distributed by the processor 11 according to the following priority:

[0082] a) The first-stage energy subsystem preferentially provides heat to the second-stage energy subsystem through the first heat exchanger 7.

[0083] b) In summer, the processor 11 detects that the first-level energy subsystem has thermal redundancy, opens the corresponding valve on the pipeline, and provides heat to the absorption chiller 4 to achieve cooling and meet the cooling needs of the ship.

[0084] c) If the processor 11 detects that the first-level energy subsystem still has thermal redundancy under the premise that (a) and (b) are satisfied, it opens valve 20 to provide heat to the waste heat power generation device and realizes waste heat power generation and connects it to the ship's power grid.

[0085] Waste heat power generation device 3 uses an organic Rankine cycle to recover and utilize waste heat and achieve thermoelectric conversion. Waste heat power generation device 3 includes a preheater 17 and an evaporator 18. Waste heat power generation device 3 heats the circulating working fluid to a gaseous state through the evaporator 18 to generate electricity.

[0086] When the second-stage energy subsystem still has heat redundancy after meeting the ship's load (a, b, c), it controls the second valve 21 to transfer heat to the circulating working fluid through the preheater 17 to generate electricity.

[0087] d) The thermal storage tank 5 serves to store heat. After the first-stage energy subsystem meets the above-mentioned supply requirements, the control valve 22 stores the remaining heat in the thermal storage tank. The solar collector 6 can collect solar heat from the sea and store it in the thermal storage tank 5. The thermal storage tank 5 supplies heat to the second-stage supply system through the second heat exchanger 8.

[0088] The waste heat emissions from ship equipment can be generated by the equipment itself, or predicted based on the correlation between season, ship equipment operating conditions, environmental information (including temperature, humidity, etc.), and waste heat. This correlation can be represented by a curve or function fitted based on historical operating data of the ship equipment, or by a model trained on a neural network based on historical operating data. This historical operating data includes the following parameters: season, ship equipment operating conditions, environmental information, and waste heat.

[0089] The energy demand of a ship's load can be provided by the ship itself, or predicted based on the correlation between season, ship's operating conditions, environmental information, and energy consumption (characterizing energy demand). This correlation can be represented by a curve or function fitted based on historical operating data of the ship's load, or by a model trained on a neural network based on historical operating data of the ship's load. This historical operating data includes the following parameters: season, ship's operating conditions, environmental information, and energy consumption.

[0090] In this embodiment, a multi-stage heating system is set up. By intelligently switching between different modes, it ensures that the real-time heat energy demand of the ship's load is met under different operating conditions. While meeting the ship's load heat energy demand, it fully saves energy consumption, supplements the ship's electricity and cooling capacity, and simultaneously evaluates and displays the energy consumption of the entire system in real time. This makes the entire system stable, intelligent, and highly operable and intuitive.

[0091] This disclosure also provides an energy management method, as shown in Figure 4, which is applied to the energy supply system of a ship provided in any of the above embodiments; the energy management method includes:

[0092] Step 401: Monitor the energy demand of the ship's load.

[0093] Step 402: Select a target energy subsystem that matches the energy demand from at least two energy subsystems, and control the target energy subsystem to provide energy to the ship's load.

[0094] In one embodiment, each energy subsystem is assigned a priority. In step 102, a target energy subsystem that matches the thermal energy demand is selected based on the priority of the energy subsystem.

[0095] In one embodiment, the energy conversion branches included in the first-level energy subsystem are prioritized. In step 102, a target energy conversion branch that matches the thermal energy demand is selected based on the priority of the energy conversion branch to provide energy to the load or other energy subsystems.

[0096] Figure 5 is a schematic diagram of an electronic device according to an example embodiment of this disclosure. The electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the computer program, it implements the energy management method described in any of the above embodiments. The electronic device 50 shown in Figure 5 is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this disclosure.

[0097] As shown in Figure 5, the electronic device 50 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 50 may include, but are not limited to: at least one processor 51, at least one memory 52, and a bus 53 connecting different system components (including memory 52 and processor 51).

[0098] Bus 53 includes a data bus, an address bus, and a control bus.

[0099] The memory 52 may include volatile memory, such as random access memory (RAM) 521 and / or cache memory 522, and may further include read-only memory (ROM) 523.

[0100] The memory 52 may also include a program tool 525 (or utility) having a set (at least one) program module 524, such program module 524 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0101] The processor 51 executes various functional applications and data processing by running computer programs stored in the memory 52, such as the energy management method provided in any of the above embodiments.

[0102] Electronic device 50 can also communicate with one or more external devices 54 (e.g., keyboard, pointing device, etc.). This communication can be performed through input / output (I / O) interface 55. Furthermore, electronic device 50 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) via network adapter 56. As shown, network adapter 56 communicates with other modules of electronic device 50 via bus 53. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with electronic device 50, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0103] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0104] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the energy management method provided in any of the above embodiments.

[0105] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0106] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the energy management method described in any of the preceding embodiments.

[0107] The program code for executing the computer program product of this disclosure can be written in any combination of one or more programming languages, and the program code can be executed entirely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0108] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. An energy supply system of a marine vessel, characterized in that, include: Energy output end, used for connecting external ship loads; At least two energy subsystems are provided for supplying energy to the ship's load through the energy output terminal, and at least one of the at least two energy subsystems converts waste heat generated during the operation of the ship's equipment into energy; The processor monitors the energy demand of the ship's load, selects a target energy subsystem from the at least two energy subsystems that matches the energy demand, and controls the target energy subsystem to provide energy to the ship's load.

2. Energy supply system of a ship according to claim 1, characterized in that The waste heat includes high-temperature flue gas with a temperature greater than a first temperature threshold and / or high-temperature water with a temperature greater than a second temperature threshold. The at least two-level energy subsystem includes: The first-stage energy subsystem has its input end connected to the high-temperature flue gas output end of the ship's equipment, and its output end connected to the energy output end; the first-stage energy subsystem is used to convert the high-temperature flue gas into energy. And / or, a second-stage energy subsystem, wherein the input of the second-stage energy subsystem is connected to the high-temperature water output of the ship's equipment, and the output of the second-stage energy subsystem is connected to the energy output; the second-stage energy subsystem is used to convert the high-temperature water into energy; And / or, a third-level energy subsystem, the output of which is connected to the energy output terminal; the third-level energy subsystem is used to output self-generated energy to the energy output terminal.

3. Energy supply system of a ship according to claim 2, characterized in that, The first-stage energy subsystem is also connected to the second-stage energy subsystem via a first heat exchanger and a first valve; the processor is electrically connected to the first valve.

4. The energy supply system of a ship according to claim 2, characterized in that, The first-level energy subsystem includes: The first energy conversion branch includes a first pipeline and a waste heat power generation device disposed on the first pipeline; one end of the first pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the first pipeline is connected to the input end of the waste heat power generation device, which is also electrically connected to an energy output end; the waste heat power generation device is used to convert the high-temperature flue gas into electrical energy. And / or, a second energy conversion branch, the second energy conversion branch including a second pipeline and an absorption chiller unit disposed on the second pipeline; one end of the second pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the second pipeline is connected to the output end of the second-stage energy subsystem; the absorption chiller unit is used to convert the high-temperature flue gas into cold gas; And / or, a third energy conversion branch, the third energy conversion branch including a third pipeline and a heat storage tank disposed on the third pipeline; one end of the third pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the third pipeline is connected to the output end of the second-stage energy subsystem; the heat storage tank is used to store excess waste heat of the first-stage energy subsystem; And / or, a fourth energy conversion branch, the fourth energy conversion branch including a fifth pipeline and an exhaust heat exchanger disposed on the fifth pipeline, one end of the fifth pipeline being connected to the input end of the first-stage energy subsystem, and the other end of the third pipeline being connected to the output end of the first-stage energy subsystem.

5. Energy supply system of a ship according to claim 4, characterized in that, In the case where the first-level energy subsystem includes the third energy conversion branch, the energy supply system further includes a solar collector; the solar collector is used to collect solar heat and store it in the heat storage tank.

6. Energy supply system of a ship according to claim 4, characterized in that In the case where the first-stage energy subsystem includes the third energy conversion branch, the thermal storage tank is connected to the second-stage energy subsystem via a second heat exchanger; And / or, the input end of the second heat exchanger is provided with a first pump; the processor is electrically connected to the first pump; And / or, the output end of the second heat exchanger is provided with a second pump; the processor is electrically connected to the second pump; And / or, the second energy conversion branch is connected to the waste heat power generation device via a second valve; the second valve is electrically connected to the processor.

7. Energy supply system of a vessel according to any one of claims 2-6, characterized in that, The second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger installed on the fifth pipeline.

8. The energy supply system of a marine vessel according to claim 4, characterized in that, The third energy conversion branch includes a sixth pipeline and a hot water heater. One end of the sixth pipeline is connected to the output end of the hot water heater, and the other end of the sixth pipeline is connected to the energy output end.

9. Energy supply system of a vessel according to any of claims 1-6, 8, characterized in that, The energy subsystem is assigned a priority; the processor selects a target energy subsystem that matches the energy requirement based on the priority.

10. An energy management method, characterized by, The energy supply system applied to the ship according to any one of claims 1-9; The energy management method includes: Monitor the energy requirements of the ship's load; Select a target energy subsystem from the at least two energy subsystems that matches the energy demand, and control the target energy subsystem to provide energy to the ship load.

11. An electronic device comprising a memory, a processor, and a computer program stored on the memory for running on the processor, characterized in that, When the processor executes the computer program, it implements the energy management method of claim 10.

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