CN113237369A - Electrothermal transducing device and transducing method of integrated heat storage unit - Google Patents
Electrothermal transducing device and transducing method of integrated heat storage unit Download PDFInfo
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- CN113237369A CN113237369A CN202110336310.0A CN202110336310A CN113237369A CN 113237369 A CN113237369 A CN 113237369A CN 202110336310 A CN202110336310 A CN 202110336310A CN 113237369 A CN113237369 A CN 113237369A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention relates to an electrothermal transducing device and method of integrated heat storage unit, the device includes: the device comprises an external electric unit, an electric heating energy conversion unit and a heat supply system unit; the electrothermal transduction unit comprises a heat-insulating shell, a controller, an electric heating device, a heat storage material part, a framework and a preheating layer; the heat storage material part is a solid heat storage material; the electric heater element is inserted between the block heat storage materials; the heat supply system unit comprises a circulating variable frequency fan, a heat exchange channel, a heat exchange water tank and a heat exchange pipeline, wherein a preheating layer of the electric heat conversion device, the variable frequency circulating fan, the heat exchange channel, the heat exchange pipeline in the heat exchange water tank and a heat load are connected, and the heat load comprises steam heating and water heating; the heat exchange circulating medium output from the circulating variable frequency fan provides steam heating heat supply through the heat exchange channel, and the heat exchange channel is communicated with a heat exchange pipeline arranged in the heat exchange water tank and exchanges heat with water to provide water heating heat supply.
Description
Technical Field
The invention relates to the field of electric heat conversion devices in new energy heat supply technology, in particular to an electric heat energy conversion device integrated with a solid heat storage unit.
Background
At present, in winter, a plurality of areas still adopt the traditional coal-fired heating mode, so that the energy efficiency is low, the pollution is serious, and the coal resource is a non-renewable resource and is not beneficial to sustainable development. Clean heating based on electric power, a mode of 'electric energy substitution' is gradually emerging, and a reliable and effective solution is provided for alleviating the problems of resources and pollution. The electric energy is used for supplying heat in an 'electric energy replacement' mode, the energy structure can be changed, the use of energy with strong pollution such as coal is reduced, and clean electric energy is used for supplying heat. In the aspect of an electric power system, the electric heat energy conversion station is regarded as a special large electric load, and the solid-state heat storage device is adopted in the electric heat energy conversion station, so that the flexibility of the device is enhanced, and the peak regulation capacity of a power grid is enhanced. In addition, the electric heat conversion device is regarded as a controllable electric load, and is combined with a power grid, a power transmission line, a transformer substation and a heat supply system to form an electric heat energy conversion station of an integral system comprising power generation, power transmission, power transformation and power consumption, so that the electric heat energy conversion station has a remarkable contribution to improving the peak regulation capacity of the power grid.
In the existing technical scheme of electric heating and heat storage, patent [1] proposes an electric heating heat storage heat exchange device, which stores heat by adopting a phase change heat storage mode, but the cycle life of the heat storage material needs to be prolonged. Patent [2] has proposed a solar energy water wheel electricity generation heat-retaining integrated device of coupling compressed air energy storage, adopts compressed air energy storage to be a clean energy storage mode, but the operating stability of this mode is relatively poor.
Reference to the literature
[1] Liu Yong, an electric heating energy-storing heat-exchanging device, Beijing, CN108731264A P, 2018-11-02
[2] Wu Xiaoming, a solar water wheel power generation and heat storage integrated device for coupling compressed air energy storage, Jiangsu province, CN210317493U [ P ] 2020-04-14
[3] Yanghuomao, Zhendangzhen, guan, Guojian, Palii, Pagang, Sudehua solid heat-storage material and its preparation method and application, Liaoning province, CN106905929B [ P ] 2019-09-20
Disclosure of Invention
The invention aims to: the electric heating energy conversion device of the integrated heat storage unit is capable of improving the peak regulation capacity of a power grid, and a heat exchange method is provided. The heat storage part of the invention adopts the interpenetration type solid heat storage device to match with the heat preservation layer, has double-layer guarantee effects of fast heating, uniform heating and good heat preservation effect, can use the electrothermal transducing device as a controllable load with high flexibility to improve the peak regulation capability of a power grid, and adopts the following technical scheme:
an electrothermal transducer device integrated with a heat storage unit, comprising: the external electric unit is a bridge beam formed by connecting the electric heating transduction unit and an external power grid part, external electric energy is sent to a user side through the external electric unit, the external electric unit is also connected with the electric heating transduction unit through a solid relay, and the solid relay is controlled to be switched on and off by a controller to heat an electric heating device of the electric heating transduction unit;
it is characterized in that the preparation method is characterized in that,
the electrothermal transduction unit comprises a heat-insulating shell, a controller, an electric heating device, a heat storage material part, a framework and a preheating layer;
the electric heating device, the heat storage material part and the framework are positioned in the heat-insulating shell;
the heat storage material part is a solid heat storage material, and the framework is used for loading the solid heat storage material; a channel through which a heat exchange circulating medium can flow is arranged in the framework, the heat storage material part and the framework form a heat accumulator, a preheating layer is arranged between the heat accumulator and the heat-insulating shell, and the heat exchange circulating medium is arranged in the preheating layer;
the electric heater element is inserted between the block heat storage materials;
the heat supply system unit comprises a circulating variable frequency fan, a heat exchange channel, a heat exchange water tank and a heat exchange pipeline, wherein a preheating layer of the electric heat conversion device, the variable frequency circulating fan, the heat exchange channel, the heat exchange pipeline in the heat exchange water tank and a heat load are connected, and the heat load comprises steam heating and water heating; the heat exchange circulating medium output from the circulating variable frequency fan provides steam heating heat supply through the heat exchange channel, and the heat exchange channel is communicated with a heat exchange pipeline arranged in the heat exchange water tank and exchanges heat with water to provide water heating heat supply.
Furthermore, the electric heating device adopts an inductance-capacitance parallel resonance mode and comprises an inductance heater and a capacitor, and a coil of the inductance heater is inserted between the block heat storage materials.
Further, the heat storage material portion is a block-shaped heat storage material.
Furthermore, a temperature sensor is arranged in the heat-insulating shell.
Furthermore, the circulating variable frequency fan is connected with the upper part of the heat-insulating shell and used for conveying gaseous heat exchange circulating medium input from the lower part of the heat accumulator from bottom to top, passing through the heat accumulator to the preheating layer, carrying heat out and outputting the heat to the heat exchange channel from the upper part.
Furthermore, the channel which is arranged in the framework and can be used for circulating the heat exchange circulating medium is a small hole or a gap.
Furthermore, a heat exchange pipeline in the heat exchange water tank is connected with the lower part of the heat preservation shell, and the heat circulation medium cooled down from the heat exchange pipeline flows back into the preheating layer from the lower part.
Further, the framework is made of heat-resistant steel or cast iron.
The invention also provides a transduction method realized by using the electrothermal transduction device, which is characterized in that the working process of the electrothermal transduction device of the electrothermal transduction unit is as follows: the electric energy of a remote power grid is transmitted to an energy consumption end through a high-voltage transmission line and is changed into the electric energy grade capable of working for an electric heating device of an electric heating transduction unit through a transformer substation, in the low-ebb period of the electric load, the temperature sensor transmits the temperature information in the heat insulation layer to the controller, the controller controls the electric heating device to work, the electric energy is converted into heat energy and stored, at the moment, heat is not released, in the peak period of the electric load, the heat exchange circulation part works, and the heat energy in the heat storage material is released in the form of hot water and hot gas through the heat supply system unit to supply heat for the heat supply system unit.
The invention not only realizes the conversion of electric energy into heat energy, but also realizes the storage of the heat energy, and provides a solid-state heat storage device structure.
The electrothermal transducing device of the invention can provide heat loads of steam heating and cold and warm at the same time. The hot air output from the preheating layer firstly passes through the heat exchange channel to provide steam heating. Then through heat exchange water tank, provide hot-water heating, realize more high-efficient more nimble electric heat conversion function.
The invention adopts heat storage technology to consume electric energy, can reasonably arrange the electric heating time period, can utilize the off-peak electricity price time period as much as possible, can reduce the heat supply cost, and can enhance the peak regulation capacity of the power grid because the electric heating energy conversion station containing heat storage can be regarded as a flexible controllable electric load.
Drawings
FIG. 1 is a schematic view of an electrothermal transducer of an integrated heat storage unit of the present invention.
Fig. 2 is a schematic structural view of the electric heating device 22 of the present invention.
Detailed Description
The technical solution of the present invention is further explained below.
The external electric unit is a bridge beam which is connected with an electric heating transduction unit and an external power grid part and is equivalent to the action of a switch bus, external electric energy is firstly connected to the external electric unit when finally reaching a user end through power generation of the power grid, power transmission of a power transmission line and power transformation of a transformer substation, the other side of the external electric unit is connected with the electric heating transduction device through a solid relay switch device, the switch device and the electric heating transduction device both belong to the electric heating transduction unit, the solid relay is controlled to be switched off by a controller, and an electric heating part of the electric heating transduction device is heated at proper time, the electric heating transduction device designed by the patent is integrated with electric heating and heat storage, the electric heating device is embedded into a heat storage material in an embedded mode, heat storage is carried out while electric heating, the embedded mode adopts a penetrating and inserting type embedding mode, and the contact area between the electric heating device and the heat storage material is increased, the heat storage material is heated uniformly to store heat; the electric heat conversion device comprises a heat insulation shell, wherein the electric heating device and the heat storage material are contained in the heat insulation shell, a certain preheating buffer space is arranged between the heat insulation shell and the heat storage material and is called a preheating layer, preheating of a large number of heat exchange circulating media can be realized, the heat exchange circulating media are mainly air, heat exchange is carried out between the preheating buffer space and the heat storage material through flowing air, the heat exchange function is realized, the preheating layer is provided with a temperature sensor to feed back the temperature to a controller, and the whole functions of electric heat conversion, heat storage and heat exchange are integrally realized by the parts. The heat exchange circulating medium is an important medium for heat storage and heat supply to a heat load, a preheating layer of the electric heat conversion device, the variable-frequency circulating fan and the heat exchange water tank are connected with the tail end heat supply device, a heat exchange pipeline part in the heat exchange water tank exchanges heat with water, hot air is converted into hot water and can supply hot water load, the heat exchange pipeline penetrates through the preheating layer, the variable-frequency circulating fan and the heat exchange water tank in a connecting mode, the hot air load can be supplied by branching out of a branch pipeline and finally returns to the preheating layer, air cooled down after the heat exchange process returns to the heat exchange circulating device, and meanwhile, the supply of the circulating medium is guaranteed by matching with an.
The electric heating energy conversion unit is characterized in that the switch unit controller mainly controls the electric heating device, the temperature sensor transmits temperature information in the heat insulation layer to the controller, the controller transmits a control signal to the solid-state relay, and the electric heating device is controlled to convert electric energy into heat energy in a reasonable time.
The electric heating device in the electric heating transduction unit adopts an inductive heater as a material, namely a device for generating heat energy by utilizing electromagnetic induction. The working time of the inductive heater is controlled by the relay switch, when the inductive heater works, the relay is closed, alternating-current medium-high frequency electricity is applied to two ends of the inductive heater and is heated by electromagnetic induction, metal wound by the inductance coil is an electric heater and is inserted into the heat storage material, and in consideration of the problem that the electromagnetic induction of the pure inductance element has low power factor caused by different phases of voltage and current, capacitors are connected in parallel to two ends of the inductive heater to generate LC resonance and improve the heating efficiency and speed.
The heat storage part in the electrothermal transducing unit is composed of solid heat storage materials (including iron ore, magnesium iron brick and other materials) according to a certain proportion relation, is a block-shaped heat storage material, has low cost, high heat ratio and good air permeability, can adjust the heat conductivity coefficient to adapt to different heat storage requirements [ patent 3], and the heat storage materials are uniformly arranged in a framework in a square shape. The framework is made of heat-resistant metal and is made of heat-resistant steel or cast iron, so that the heat transfer performance is good. The framework is provided with small-hole gaps which can be ventilated, and a large amount of heat exchange circulating media in the preheating layer can take away heat in the heat storage material to exchange heat with the heat storage material. The circulating variable frequency fan inputs heat exchange circulating medium from the lower part of the heat accumulator, and the heat exchange circulating medium carries heat out from the lower part to the upper part through the heat accumulator and outputs the heat from the upper part.
The heat exchange circulating medium is air fluid, and due to the existence of the variable frequency circulating fan, the circulation direction of the heat exchange circulating medium is from bottom to top, the air inlet is arranged below the heat exchange circulating medium, the air outlet is arranged above the heat exchange circulating medium, and the circulation direction of the medium is controlled by the variable frequency circulating fan. Under the action of the variable-frequency circulating fan, the flowability of the upper air is stronger than that of the lower air, so that the pressure intensity of the upper air is small, and the air circulation direction is from bottom to top.
The electric heating device in the electric heating transduction unit is characterized in that the inductive heaters of the electric heating device are uniformly distributed in the heat storage material in an inserting mode.
The heat insulation shell in the electric heating transduction unit is a heat insulation shell, and the electric heating part and the heat storage part are contained in the electric heating transduction unit to play a role in heat insulation.
The solid-state relay switch in the electrothermal transducing unit is arranged outside the heat preservation part.
The heat supply system unit comprises a heat exchange circulating medium, a circulating variable frequency fan, a heat exchange pipeline, a heat exchange water tank and a tail end heat supply device.
The heat exchange circulating medium is an important medium for heat storage and heat supply to a heat load, the preheating layer of the electric heating energy conversion device, the variable frequency circulating fan and the heat exchange water tank are connected with the tail end heat supply device, a heat exchange pipeline in the heat exchange water tank exchanges heat with water, hot air is changed into hot water, the hot water load can be supplied to the hot water through the water outlet, and cooled cold water is conveyed to the water return tank through the water inlet to realize hot water circulation. The heat exchange pipeline is connected with and penetrates through the preheating layer, the variable-frequency circulating fan and the heat exchange water tank, meanwhile, the branch pipeline branches out to supply hot gas load, and finally returns to the preheating layer, air media cooled in the heat exchange process are returned to the heat exchange circulating device, and meanwhile, the heat exchange circulating device is matched with an external air inlet to ensure the supply of heat exchange circulating media.
The heat supply system unit is internally provided with a heat exchange controller, and the working state of the circulating variable frequency fan is controlled according to the requirements of hot water and hot gas by transmitting a fan control signal to the fan frequency converter, so that the output hot gas and hot water are controlled.
The heat storage part in the electric heat transduction unit is matched with the heat preservation layer through the interpenetration type model, so that the double-layer guarantee effect that the heating is fast, the heating is uniform and the heat preservation effect is good is achieved.
The following describes in detail an embodiment of the electrothermal transducer device integrated with a heat storage unit and a specific structure of a solid-state heat storage model, with reference to the accompanying drawings of the present invention.
Fig. 1 is a schematic view of an electrothermal transducer device of an integrated heat storage unit of the present invention. As can be seen from the figure: the invention provides an electrothermal transducing device of an integrated heat storage unit, which consists of an external electric unit 1, an electrothermal transducing unit 2 and a heat supply system unit 3, wherein the electrothermal transducing unit 2 comprises a controller 21, an electric heating device 22, a heat storage material part 23, a heat insulation shell 24, a preheating layer 25 and a framework 26; the heating system unit comprises a circulating variable frequency fan 31, a heat exchange water tank 32, a heat exchange pipeline 33, an air inlet 34, an air outlet 35, a water inlet 321 and a water outlet 322.
Fig. 2 shows a specific configuration of the electric heating device 22, which adopts an inductance-capacitance parallel resonance mode, including an inductance heater 221 and a capacitor 222. The cuboid structure is a placement position of the inductive heater in the framework; the induction heater 221 is connected in parallel with the capacitor 222 as the electric heating device 22 in fig. 1.
The external electric unit 1 is a bridge beam formed by connecting the electrothermal transducing unit 2 with an external power grid.
The heat storage material part 23 is composed of solid heat storage materials (including iron ore, magnesium iron brick and other materials) according to a certain proportion relationship, is a block heat storage material, has low cost, high heat ratio and good air permeability, and can adjust the heat conductivity coefficient to adapt to different heat storage requirements. The framework loaded with the heat storage material is made of heat-resistant metal bodies and is made of heat-resistant steel or cast iron, so that the heat transfer performance is good. The heat storage material part is evenly distributed in the framework, small hole gaps exist in the framework and can ventilate, and a large amount of heat exchange circulating media in the preheating layer can take away heat in the heat storage material and exchange heat with the heat storage material. The circulating variable frequency fan inputs heat exchange circulating medium from the lower part of the heat accumulator, and the heat exchange circulating medium carries heat out from the lower part to the upper part through the heat accumulator and outputs the heat from the upper part.
The electric heating device 22 is an inductive heater, i.e. a device for generating heat energy by electromagnetic induction. The work time of the inductive heater is controlled by the relay switch, when the inductive heater works, the relay is closed, alternating-current medium-high frequency electricity is applied to two ends of the inductive heater and is heated by electromagnetic induction, metal wound by the inductance coil is an electric heater and is inserted into the heat storage material, and in consideration of the problem that the electromagnetic induction of the pure inductance element has low power factor caused by different phases of voltage and current, capacitors are connected in parallel to two ends of the inductive heater to generate LC resonance and improve the heating efficiency and speed.
The heat exchange circulating medium is air fluid, due to the existence of the variable frequency circulating fan, the circulating direction of the heat exchange circulating medium is from bottom to top, the air inlet is arranged at the lower part, the air outlet is arranged at the upper part, the variable frequency circulating fan 31 can control the circulating direction of the internal heat exchange circulating medium in the electric heating energy conversion unit 2, the flowability of the air at the upper part is stronger than that of the air at the lower part under the action of the variable frequency circulating fan 31, the pressure intensity at the upper part is small, and the air circulating direction is from bottom to top.
The heat-insulating shell 24 surrounds the heat storage material part 23 and the electric heating device 22 inside, so that the heat loss in the electric heating process, the heat storage and heat release process and the heat exchange process of fluid can be reduced, the waste heat is surrounded inside the heat-insulating layer, and a preheating layer is formed between the heat-insulating part and the heat-storing part, so that the internal fluid has a higher initial temperature and the heat release rate is higher.
The heat exchange circulating medium is an important medium for heat storage and heat supply to a heat load, the preheating layer 25 of the electric heat conversion device, the variable frequency circulating fan 31 and the heat exchange water tank 32 are connected with the tail end heat supply device, a heat exchange pipeline 33 in the heat exchange water tank 32 exchanges heat with water, hot air is changed into hot water, the hot water load can be supplied through a water outlet, the cooled water is conveyed into a water inlet tank through a water inlet, the heat exchange pipeline 33 is connected and penetrates through the preheating layer 25, the variable frequency circulating fan 31 and the heat exchange water tank 32, meanwhile, the hot air load can be supplied through a branch air outlet 34 of the heat exchange branch pipeline, the hot water finally returns to the preheating layer 25, the air medium cooled down after the heat exchange process returns to the heat exchange circulating device, and meanwhile, an external air inlet 35 is matched to ensure the.
A heat exchange controller is arranged in the heat supply system unit, a fan control signal is transmitted to the fan frequency converter through the heat exchange controller, and the working state of the circulating frequency conversion fan 31 and the working state of the circulating water tank 32 are controlled according to the requirements of hot water and hot air, so that the output hot air and hot water are controlled.
The working process of the electrothermal transducing device of the electrothermal transducing unit is as follows: the electric energy of a remote power grid is transmitted to an energy using end through a high-voltage transmission line and is changed into an electric energy grade capable of working for an electric heating and solid-state heat storage unit through a transformer substation, a controller controls an electric heating part to work in a low-ebb period of an electric load, the electric energy is converted into heat energy and stored, heat is not released at the moment, the heat load is supplied by other heat supply modes (an electric boiler, a heat pump and the like), the other heat supply modes stop working in a high-ebb period of the electric load, a heat exchange circulation part works, and the heat energy in the heat storage material is released in the form of hot water and hot gas through a heat supply system unit to supply heat for a heat supply system.
In the coupling form of the heat storage part and the electric heating device, the material of the electric heating device is not limited to an inductive heater, and different materials can be changed for electric heating and heat storage in practical engineering as long as the model provided by the invention is in a protection range.
Claims (10)
1. An electrothermal transducer device integrated with a heat storage unit, comprising: an external electric unit, an electric heating energy conversion unit and a heating system unit, which is characterized in that,
the electrothermal transduction unit comprises a heat-insulating shell, a controller, an electric heating device, a heat storage material part, a framework and a preheating layer;
the electric heating device, the heat storage material part and the framework are positioned in the heat-insulating shell;
the heat storage material part is a solid heat storage material, and the framework is used for loading the solid heat storage material; a channel through which a heat exchange circulating medium can flow is arranged in the framework, the heat storage material part and the framework form a heat accumulator, a preheating layer is arranged between the heat accumulator and the heat-insulating shell, and the heat exchange circulating medium is arranged in the preheating layer;
the electric heater element is inserted between the block heat storage materials;
the heat supply system unit comprises a circulating variable frequency fan, a heat exchange channel, a heat exchange water tank and a heat exchange pipeline, wherein a preheating layer of the electric heat conversion device, the variable frequency circulating fan, the heat exchange channel, the heat exchange pipeline in the heat exchange water tank and a heat load are connected, and the heat load comprises steam heating and water heating; the heat exchange circulating medium output from the circulating variable frequency fan provides steam heating heat supply through the heat exchange channel, and the heat exchange channel is communicated with a heat exchange pipeline arranged in the heat exchange water tank and exchanges heat with water to provide water heating heat supply.
2. The electrothermal transducer device of claim 1, wherein the electric heating means is in the form of an inductive-capacitive parallel resonance comprising an inductive heater and a capacitor, the coil of the inductive heater being interposed between the solid heat storage materials.
3. The electrothermal transducer device of claim 1, wherein the portion of heat storage material is a bulk heat storage material.
4. The electrothermal transducer device of claim 1, wherein a temperature sensor is disposed within the insulated housing.
5. The electrothermal transducer device according to claim 1, wherein the circulation variable frequency fan is connected to the upper part of the heat-insulating casing, and is used for conveying the gaseous heat exchange circulation medium, which is fed from the lower part of the heat storage body, from bottom to top, through the heat storage body to the preheating layer, and then carrying out the heat to be fed from the upper part to the heat exchange channel.
6. The electrothermal transducer device according to claim 1, wherein the external electrical unit is connected between the electrothermal transducer unit and an external power grid part, and the external electrical unit is further connected with the electrothermal transducer unit through a solid-state relay, and the solid-state relay is controlled by the controller to be turned on and off to heat the electric heating device of the electrothermal transducer unit.
7. The electrothermal transducer device according to claim 1, wherein a heat exchange pipe in the heat exchange water tank is connected to a lower portion of the heat insulating housing, and the heat circulation medium cooled down from the heat exchange pipe flows back into the preheating layer from below.
8. The electrothermal transducer device according to claim 1, wherein the skeleton is heat-resistant steel or cast iron.
9. The transduction method achieved by the electrothermal transducer device according to claim 1, wherein a temperature sensor is provided in the heat-insulating case; the working process of the electrothermal transducing device of the electrothermal transducing unit is as follows: the electric energy of a remote power grid is transmitted to an energy consumption end through a high-voltage transmission line and is changed into the electric energy grade capable of working for an electric heating device of an electric heating transduction unit through a transformer substation, in the low-ebb period of the electric load, the temperature sensor transmits the temperature information in the heat insulation layer to the controller, the controller controls the electric heating device to work, the electric energy is converted into heat energy and stored, at the moment, heat is not released, in the peak period of the electric load, the heat exchange circulation part works, and the heat energy in the heat storage material is released in the form of hot water and hot gas through the heat supply system unit to supply heat for the heat supply system unit.
10. The method of claim 9, wherein the electrical heating element is in the form of an inductive-capacitive parallel resonance comprising an inductive heater and a capacitor, the coil of the inductive heater being interposed between the bulk heat storage material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353569A (en) * | 2022-02-08 | 2022-04-15 | 西安慧金科技有限公司 | Direct electric heat conversion type efficient energy storage and release system |
| IE20220047A1 (en) * | 2022-03-14 | 2023-10-25 | Timothy Patrick Cooper | Thermal Energy Storage System |
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2021
- 2021-03-29 CN CN202110336310.0A patent/CN113237369A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353569A (en) * | 2022-02-08 | 2022-04-15 | 西安慧金科技有限公司 | Direct electric heat conversion type efficient energy storage and release system |
| CN114353569B (en) * | 2022-02-08 | 2023-10-20 | 西安慧金科技有限公司 | Direct electric heat transfer type high-efficiency energy storage and release system |
| IE20220047A1 (en) * | 2022-03-14 | 2023-10-25 | Timothy Patrick Cooper | Thermal Energy Storage System |
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