Movable heat storage and supply system utilizing waste heat and valley electricity and regulation and control method

Abstract

The invention belongs to the technical field of waste heat utilization, and particularly relates to a movable heat storage and supply system utilizing waste heat and valley electricity and a regulation and control method, and the movable heat storage and supply system comprises a waste heat recovery unit used for recovering waste heat discharged in the industrial production process; the off-peak electricity heat supply unit is used for converting electric energy into heat energy in the off-peak electricity period; the movable heat storage unit comprises a phase change heat storage material and a conveyer; the phase change heat storage material absorbs heat energy from the waste heat recovery unit and / or the valley electricity heat supply unit, and the transporter transports the phase change heat storage material to a heat user; the heat user exchanges heat with the phase change heat storage material; and the intelligent regulation and control unit is in communication connection with the waste heat recovery unit, the valley electricity heat supply unit, the movable heat storage unit and the heat consumer to carry out heat supply regulation and control. Compared with the prior art, the defects that in the prior art, waste heat and off-peak electric energy are difficult to reasonably utilize, and the heat loss of pipeline heat supply is high are overcome, and full and reasonable utilization of the waste heat and the off-peak electric energy is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste heat utilization, and in particular relates to a movable heat storage heating system and a control method utilizing waste heat and valley electricity. Background Art

[0002] With the increase in energy consumption and the increasing severity of environmental problems, improving energy efficiency and reducing energy waste have become the focus of global attention. Traditional waste heat recovery heating systems and valley power heat storage systems have certain limitations in energy utilization. They can usually only achieve local heating or achieve heating through long-distance pipeline transportation. This method is not only costly, but also has poor flexibility and is difficult to adapt to changing heating needs and geographical restrictions. In addition, heat loss during long-distance transportation is also a problem that cannot be ignored. This not only reduces energy utilization efficiency, but also has a certain impact on the environment.

[0003] In order to solve these problems, the present invention proposes a movable heat storage heating system and method that can absorb waste heat and valley electricity. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the above problems and to provide a mobile heat storage heating system and control method utilizing waste heat and valley electricity, so as to solve the defects in the prior art that waste heat and valley electricity are difficult to reasonably utilize and the heat loss of pipeline heating is high. This scheme realizes the full and reasonable utilization of waste heat and valley electricity.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The first aspect of the present invention discloses a mobile heat storage heating system using waste heat and valley electricity, comprising a waste heat recovery unit, a valley electricity heating unit, a mobile heat storage unit, a heat user and an intelligent control unit;

[0007] The waste heat recovery unit is used to recover waste heat emitted during industrial production;

[0008] The valley power heating unit is used to convert low-cost electric energy into heat energy during valley power periods;

[0009] The movable heat storage unit comprises a phase change heat storage material and a transporter; the phase change heat storage material absorbs heat energy from the waste heat recovery unit and / or the valley power heating unit, and the transporter transports the phase change heat storage material to the heat user;

[0010] The heat user exchanges heat with the phase change heat storage material;

[0011] The intelligent control unit is respectively connected to the waste heat recovery unit, the valley power heating unit, the movable heat storage unit and the heat user for heat control.

[0012] Preferably, the waste heat includes waste heat of flue gas, cooling medium, waste water and waste gas.

[0013] Preferably, the transporter includes a land transporter, a sea transporter, an air transporter and an aerospace transporter.

[0014] Preferably, the heating system further comprises a power-waste recovery unit for recovering unusable electric energy from wind power, photovoltaic power and hydropower.

[0015] Preferably, the intelligent control unit includes a monitoring module, a metering module, a scheduling module, a prediction module and a reporting module;

[0016] The monitoring module is used to obtain the total heat and the partial heat generated by the waste heat recovery unit and the valley power heating unit, as well as the total heat and the partial heat required by the heat user;

[0017] The metering module performs heat pairing between the generated heat distribution and the required heat distribution based on the data obtained by the monitoring module, and plans the transportation route of the mobile heat storage unit according to the calculation results;

[0018] The scheduling module is used to allocate the transportation path planned by the metering module to each movable heat storage unit and obtain the real-time location information of each movable heat storage unit;

[0019] The prediction module is used to predict the total heat and the sub-heat generated by the waste heat recovery unit and the valley power heating unit, as well as the total heat and the sub-heat required by the heat users;

[0020] The reporting module is used to summarize and report the data obtained by the monitoring module, the results planned by the metering module, the information obtained by the scheduling module, and the data predicted by the prediction module.

[0021] The second aspect of the present invention discloses a control method for a mobile heat storage heating system using waste heat and valley electricity as described above, wherein the intelligent control unit obtains the total heat and the partial heat generated by the waste heat recovery unit and the valley electricity heating unit, as well as the total heat and the partial heat required by the heat user; heat pairing is performed according to the generated partial heat and the required partial heat, and a transportation path of the mobile heat storage unit is planned based on the heat pairing result; the transportation path is then allocated to each mobile heat storage unit, and the intelligent control unit also obtains the real-time location information of each mobile heat storage unit;

[0022] The intelligent control unit also predicts the total heat and partial heat generated by the waste heat recovery unit and the valley power heating unit, as well as the total heat and partial heat required by heat users.

[0023] Preferably, the intelligent control unit also obtains real-time weather conditions, weather forecasts and surrounding traffic conditions throughout the transportation route, and performs heat matching and plans the transportation route by combining heat information, weather information and traffic information.

[0024] Preferably, the intelligent control unit performs path planning through a genetic algorithm with the shortest transportation time as the optimization goal.

[0025] Preferably, the intelligent control unit also predicts the generated heat and the required heat, thereby pre-scheduling the idle movable heat storage units and pre-planning the next round of transportation of the movable heat storage units.

[0026] Preferably, the real-time location information is a GNSS signal.

[0027] The working principle of the present invention is:

[0028] Through the intelligent control unit, heat production, heat demand and heat transportation are reasonably and efficiently dispatched and regulated to achieve full utilization of waste heat and off-peak electricity and reduce heating costs.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1) The system can achieve efficient utilization of waste heat resources and rational utilization of valley electricity. Under the peak-valley electricity price mechanism, the electricity during the night "valley electricity" period is converted into heat energy and stored in phase change thermal storage materials. In addition, the electricity from "abandoned wind, solar and water" can be converted into heat energy and stored in phase change thermal storage materials. This can not only smooth out the power fluctuations that may exist when the grid is connected, but also realize the consumption of renewable energy that was originally wasted.

[0031] 2) The heat storage unit is designed to be mobile. This flexibility reduces the inconvenience of heating caused by geographical restrictions. It not only eliminates the disadvantages of pipeline transportation, but also can effectively respond to emergencies such as extreme weather or equipment failure, ensuring the continuity and stability of heating, while also improving the response speed of the heating system.

[0032] 3) The mobile heat storage heating system can also dynamically adjust the operating mode according to energy supply and demand to achieve optimal energy configuration and improve energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural diagram of the heating system;

[0034] In the figure: 1-waste heat recovery unit; 2-valley electricity heating unit; 3-mobile heat storage unit; 4-heat user. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example

[0037] A mobile heat storage heating system using waste heat and valley electricity, such as Figure 1 As shown, it includes a waste heat recovery unit 1, a valley power heating unit 2, a movable heat storage unit 3, a heat user 4 and an intelligent control unit;

[0038] The waste heat recovery unit 1 is used to recover waste heat emitted during industrial production;

[0039] The valley power heating unit 2 is used to convert low-cost electric energy into heat energy during valley power periods;

[0040] The movable heat storage unit 3 includes a phase change heat storage material and a transporter; the phase change heat storage material absorbs heat energy from the waste heat recovery unit 1 and / or the valley power heating unit 2, and the transporter transports the phase change heat storage material to the heat user 4;

[0041] The heat user 4 exchanges heat with the phase change heat storage material;

[0042] The intelligent control unit is respectively connected to the waste heat recovery unit 1, the valley power heating unit 2, the movable heat storage unit 3 and the heat user 4 for heat supply control.

[0043] More specifically, in this embodiment:

[0044] The heating system comprises at least one waste heat recovery unit 1, at least one valley power heating unit 2, a plurality of movable heat storage units 3, at least one heat user 4 and an intelligent control unit.

[0045] The waste heat recovery unit 1 is mainly used to recover waste heat in the industrial production process, including waste heat contained in exhaust flue gas, cooling medium, waste water and waste gas; its main structure can be a heat exchanger or other heat exchange / heat storage equipment to transfer the waste heat to the phase change heat storage material of the movable heat storage unit 3 for storage.

[0046] The valley power heating unit 2 mainly converts electrical energy into thermal energy during valley power periods and transfers the thermal energy to the phase change thermal storage material of the movable thermal storage unit 3 for storage; and during peak power periods, the conversion of electrical energy into thermal energy is suspended. Specifically, an electric heater or heat pump system can be used to convert electrical energy into thermal energy, and then the converted thermal energy is transferred to the phase change thermal storage material for storage through a heat exchanger or other heat exchange / heat storage equipment.

[0047] The waste heat recovery unit 1 and the valley power heating unit 2 can each be provided with at least one heat storage device to store the recovered and generated heat therein, and then the heat storage device transfers the heat to the mobile heat storage unit 3 to form a relay transmission. This can better adapt to the intermittent heat exchange situation of the mobile heat storage unit 3, further reduce the waste of heat, and better provide more accurate data information for heating scheduling.

[0048] The movable heat storage unit 3 is composed of a phase change heat storage material for storing heat and a transporter for loading and transporting the phase change heat storage material. The phase change heat storage material includes an inorganic phase change heat storage material and an organic phase change heat storage material. The inorganic phase change heat storage material includes an inorganic hydrated salt, a molten salt, a metal and an alloy, etc. The organic phase change heat storage material includes paraffin, an alkane, a salt or an alcohol, etc.

[0049] According to different modes of transportation, the transporter can be selected as a land transporter, a sea transporter, an air transporter and an aerospace transporter. The inner side of the transporter needs to be designed with an insulation structure (such as a composite insulation layer) to maintain a low level of heat loss during transportation. The transporter is provided with an interface for accessing the waste heat recovery unit 1, the valley power heating unit 2 and the heat user 4, which is used to exchange heat with the phase change heat storage material. Its heat exchange structure can be a heat exchanger structure, and the heat exchange between the cold source and the heat source is realized by circulating the heat exchange medium; during the heat exchange period, the temperature of the space where the phase change heat storage material is stored inside the transporter will also increase or decrease with the heat exchange, and the insulation structure is used to achieve the insulation inside the space. Furthermore, a heating structure (such as an electric heater) can be configured inside the space where the phase change heat storage material is stored as needed, or the engine waste heat of the transporter (using the engine cooling water) can be used for heating or insulation, so as to maintain the temperature of the space where the phase change heat storage material is stored, while reducing heat loss, and avoiding safety problems caused by the phase transformation of the phase change heat storage material during transportation.

[0050] In addition, the system can also be used in conjunction with at least one abandoned power recovery unit, which is mainly used to recover the unusable and grid-connected electric energy from wind power, photovoltaic power and hydropower. Its specific form is similar to the valley power heating unit 2, and can collect the unusable electric energy produced by wind turbines, photovoltaic generators and hydropower generators through at least one heat storage device, and provide heat to the movable heat storage unit 3 when it is connected to absorb heat.

[0051] The intelligent control unit mainly includes a monitoring module, a metering module, a scheduling module, a prediction module and a reporting module. Specifically, monitoring modules can be set at the waste heat recovery unit 1, the valley power heating unit 2 and the heat user 4 to obtain the heat supply of the waste heat recovery unit 1 and the valley power heating unit 2 and the heat demand of the heat user 4, and feed the monitoring data back to the metering module; the metering module performs heat pairing and plans the transportation route according to the data obtained by the monitoring module, and then the metering module transmits the heat pairing result and the planned route to the scheduling module; the scheduling module transmits the route to the corresponding movable heat storage unit 3, and continuously requests to obtain the real-time location information of the movable heat storage unit 3 for route comparison and real-time adjustment; the reporting module summarizes the results of each module and outputs a report. The prediction module will also predict the heat supply / heat consumption of the waste heat recovery unit 1, the valley power heating unit 2 and the heat user 4 in the next time period, and feed the prediction result back to the metering module to perform pre-pairing and pre-scheduling calculations for the next time period. In addition, the scheduling module will also request real-time weather conditions, weather forecasts and traffic conditions throughout the transportation route, and transmit the data to the metering module. The metering module can combine multiple factors for comprehensive planning to obtain a better route.

[0052] The metering module can use genetic algorithms for path planning. The genetic algorithm comprehensively considers the constraints such as heat pairing, transportation mode, performance of the transporter, weather and traffic conditions on the path, and plans the path with the shortest transportation time as the optimization goal. The prediction module can predict the heat supply and heat gap of the waste heat recovery unit 1, the valley power heating unit 2 and the heat user 4 based on the big data prediction method. The real-time location information of the mobile heat storage unit 3 is obtained as a GNSS signal, which can be a Beidou positioning signal, a GPS signal, etc.

[0053] In addition, the intelligent control unit is also equipped with a temperature sensor and a visual sensor in the internal space of the movable heat storage unit 3 to monitor the environmental conditions of the phase change heat storage material and the conditions of the phase change heat storage material. The temperature sensor and the visual sensor are respectively connected to the scheduling module for communication. At the same time, if a heating structure is configured in the internal space of the movable heat storage unit 3, it is also connected to the scheduling module for communication. Then, the scheduling module can also process and analyze the temperature data and image information fed back by the temperature sensor and the visual sensor to determine the internal space state of the movable heat storage unit 3, so as to instruct the start and stop of the heating structure according to the actual situation. On the basis of ensuring that the phase change heat storage material is in the target environmental state, the start-up time of the heating structure can be further reduced and the number of starts and stops can be controlled, so as to effectively improve the energy utilization efficiency and reduce unnecessary heat loss.

[0054] In summary, this solution uses intelligent control to dynamically adjust the operating mode according to energy supply and demand, achieve optimal energy configuration, improve energy utilization efficiency, reduce heating costs, and reduce environmental emissions.

[0055] This solution integrates waste heat recovery unit 1, valley power heating unit 2, mobile heat storage unit 3, heating unit and intelligent control unit to achieve efficient use of waste heat resources and rational use of valley power, effectively reducing energy consumption costs and promoting energy conservation and emission reduction. The mobile heat storage unit 3 greatly enhances the flexibility and adaptability of the heating system, enabling the system to quickly respond to heating needs in different locations, whether in bustling urban commercial areas or remote industrial areas, and provide timely and efficient heating services. In addition, the system constitutes an Internet of Things architecture that can dynamically adjust the operating mode according to energy supply conditions and demand changes to achieve optimal energy configuration.

[0056] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A mobile heat storage heating system using waste heat and valley electricity, characterized in that: It includes a waste heat recovery unit (1), a valley power heating unit (2), a movable heat storage unit (3), a heat user (4) and an intelligent control unit; The waste heat recovery unit (1) is used to recover waste heat emitted during industrial production; The valley power heating unit (2) is used to convert low-cost electric energy into heat energy during valley power periods; The movable heat storage unit (3) comprises a phase change heat storage material and a transporter; the phase change heat storage material absorbs heat energy from the waste heat recovery unit (1) and / or the valley power heating unit (2), and the transporter transports the phase change heat storage material to a heat user (4); The heat user (4) exchanges heat with the phase change heat storage material; The intelligent control unit is respectively connected to the waste heat recovery unit (1), the valley power heating unit (2), the movable heat storage unit (3) and the heat user (4) for heat supply control.

2. The mobile heat storage heating system using waste heat and valley electricity according to claim 1 is characterized in that: The waste heat includes waste heat of flue gas, cooling medium, waste water and waste gas.

3. The mobile heat storage heating system using waste heat and valley electricity according to claim 1 is characterized in that: The transporters include land transporters, sea transporters, air transporters and space transporters.

4. The mobile heat storage heating system using waste heat and valley electricity according to claim 1 is characterized in that: The heating system also includes a power recovery unit for recovering unusable electric energy from wind power, photovoltaic power and hydropower.

5. The mobile heat storage heating system using waste heat and valley electricity according to claim 1 is characterized in that: The intelligent control unit includes a monitoring module, a metering module, a scheduling module, a prediction module and a reporting module; The monitoring module is used to respectively obtain the total heat and the partial heat generated by the waste heat recovery unit (1) and the valley power heating unit (2), as well as the total heat and the partial heat required by the heat user (4); The metering module performs heat pairing between the generated heat distribution and the required heat distribution based on the data acquired by the monitoring module, and plans the transportation route of the movable heat storage unit (3) according to the calculation result; The scheduling module is used to distribute the transport path planned by the metering module to each movable heat storage unit (3) and obtain the real-time location information of each movable heat storage unit (3); The prediction module is used to predict the total heat and the partial heat generated by the waste heat recovery unit (1) and the valley power heating unit (2), as well as the total heat and the partial heat required by the heat user (4); The reporting module is used to summarize and report the data obtained by the monitoring module, the results planned by the metering module, the information obtained by the scheduling module, and the data predicted by the prediction module.

6. A control method for a mobile heat storage heating system utilizing waste heat and valley electricity as claimed in any one of claims 1 to 5, characterized in that: The intelligent control unit obtains the total heat and the fractional heat generated by the waste heat recovery unit (1) and the valley power heating unit (2), as well as the total heat and the fractional heat required by the heat user (4); performs heat pairing according to the fractional heat generated and the fractional heat required, and plans the transportation path of the mobile heat storage unit (3) based on the heat pairing result; the transportation path is then allocated to each mobile heat storage unit (3), and the intelligent control unit also obtains the real-time location information of each mobile heat storage unit (3); The intelligent control unit also predicts the total heat and the partial heat generated by the waste heat recovery unit (1) and the valley power heating unit (2), as well as the total heat and the partial heat required by the heat user (4).

7. The control method of a mobile heat storage heating system using waste heat and valley electricity according to claim 6 is characterized in that: The intelligent control unit also obtains real-time weather conditions, weather forecasts and surrounding traffic conditions throughout the transportation route, and performs heat matching and plans the transportation route by combining heat information, weather information and traffic information.

8. The control method of a mobile heat storage heating system using waste heat and valley electricity according to claim 7 is characterized in that: The intelligent control unit performs path planning through a genetic algorithm with the shortest transportation time as the optimization goal.

9. The control method of a mobile heat storage heating system using waste heat and valley electricity according to claim 6, characterized in that: The intelligent control unit also predicts the generated heat and the required heat, thereby pre-scheduling the idle movable heat storage units (3) and pre-planning the next round of transportation of the movable heat storage units (3).

10. The control method of a mobile heat storage heating system using waste heat and valley electricity according to claim 6, characterized in that: The real-time location information is a GNSS signal.

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