CN113175835A - Heat storage device and method for waste heat of slag by using heat pipe - Google Patents

Heat storage device and method for waste heat of slag by using heat pipe Download PDF

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Publication number
CN113175835A
CN113175835A CN202110408997.4A CN202110408997A CN113175835A CN 113175835 A CN113175835 A CN 113175835A CN 202110408997 A CN202110408997 A CN 202110408997A CN 113175835 A CN113175835 A CN 113175835A
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heat
heat pipe
temperature
pipe
change material
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CN113175835B (en
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范利武
石洪旖
杨生
邵雪峰
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Research Institute of Zhejiang University Taizhou
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Research Institute of Zhejiang University Taizhou
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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
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • 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
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention discloses a slag waste heat storage device and a method thereof by utilizing heat pipes. The device comprises a heat accumulator body, a first high-temperature heat pipe set, a second high-temperature heat pipe set, a heat pipe head protective sleeve and the like. The device has three working states, namely a heat absorption state, a heat storage state and a heat release state. In the heat absorption state, the heat accumulator is inverted, and the heat pipe is used for absorbing heat from a waste heat source; in the heat storage state, the medium in the heat pipe is solidified at the head and is vertically placed; and in a heat release state, only the high-temperature heat pipe II works, and the heat in the heat accumulator is transferred to the upper end through the heat pipe. The device not only can effectively absorb the waste heat of the slag, but also utilizes the heat pipe to realize the high-efficiency heat absorption and heat release of the heat accumulator.

Description

Heat storage device and method for waste heat of slag by using heat pipe
Technical Field
The invention belongs to the technical field of waste heat utilization and new energy, and particularly relates to a slag waste heat storage device utilizing a heat pipe and a method thereof.
Background
The heat loss of the boiler mainly comprises smoke exhaust heat loss, heat dissipation loss, chemical incomplete combustion loss, mechanical incomplete combustion loss, pollution discharge heat loss, ash physical heat loss and the like. The physical heat loss of the ash is the ash discharged by the boiler, and has higher temperature and the physical sensible heat carried by the ash. The ash discharged from the boiler still has very high temperature (800-. This heat is not utilized on the boiler and is lost. Therefore, when the boiler discharges slag and ash, the temperature of fly ash and slag should be reduced as much as possible, physical sensible heat is reduced, and physical heat loss of ash slag is reduced.
Phase change heat storage has the following advantages compared with sensible heat storage: the heat storage and release processes are approximately isothermal, and the temperature control is convenient; the heat storage density is higher and is about 1.5 to 2 times of that of a sensible heat storage system. However, the problem of difficult heat release exists in the existing phase change heat storage, and the invention creatively utilizes the heat pipe to strengthen the heat conduction process of the phase change material.
Therefore, the heat storage device for absorbing the waste heat of the hearth by using the heat pipes can not only recycle the waste heat of the slag, but also realize the cascade utilization of energy by using the waste heat.
Disclosure of Invention
The invention discloses a temperature difference power generation device utilizing slag waste heat to store heat and a power generation method thereof, and aims to recycle the slag waste heat to realize energy gradient utilization.
The invention discloses a slag waste heat storage device utilizing heat pipes, which comprises a heat accumulator body, a first high-temperature heat pipe set, a second high-temperature heat pipe set and a protective sleeve, wherein the first high-temperature heat pipe set is arranged on the heat accumulator body;
the heat accumulator body is filled with a phase-change material, the first high-temperature heat pipe group is formed by arranging a plurality of first heat pipes, and the second high-temperature heat pipe group is formed by arranging a plurality of second heat pipes; the first heat pipe and the second heat pipe are vertically arranged, the tail ends of the first heat pipe and the second heat pipe are arranged inside the heat accumulator body and are in contact with the phase change material, and the head ends of the first heat pipe and the second heat pipe are positioned outside the heat accumulator body; the working temperature of the first high-temperature heat pipe set is higher than the phase-change temperature of the phase-change material, and the working temperature of the first high-temperature heat pipe set is lower than the phase-change temperature of the phase-change material;
the heat storage device is characterized in that the protective sleeve is provided with a plurality of heat conduction heat pipe sleeves, the number, the distribution form and the size of the heat conduction heat pipe sleeves are matched with those of heat pipes located outside the heat storage body, and the protective sleeve is detachably connected with the heat storage body.
Further, the shell of the heat accumulator body is a heat insulation shell.
Furthermore, the outer walls of the parts of the first high-temperature heat pipe group and the second high-temperature heat pipe group, which are positioned in the heat accumulator body, are provided with needle ribs, so that the contact area between the first high-temperature heat pipe group and the phase-change material is increased.
Further, the phase change temperature of the phase change material is 650-750 ℃; the working temperature of the first heat pipe is 40-80 ℃ higher than the phase change temperature of the phase change material, and the working temperature of the second heat pipe is 40-80 ℃ lower than the phase change temperature of the phase change material.
Furthermore, the first heat pipe and the second heat pipe are arranged in a crossed manner or are respectively arranged in different blocks of the heat accumulator body (1).
Further, the medium in the first heat pipe is sodium, potassium or steel; the medium in the second heat pipe is sodium, potassium or e.
Further, the phase change material is chloride or carbonate.
The invention further discloses a heat storage method of the waste heat storage device, which comprises the following steps:
during heat storage, firstly, the head parts of the first heat pipe and the second heat pipe, which are exposed outside the heat accumulator body, are worn with protective sleeves, the heat accumulator is integrally turned upside down, the head parts of the first heat pipe and the second heat pipe are inserted into slag, the protective sleeves keep the heat pipes clean and not damaged, working media in the first heat pipe and the second heat pipe flow to the head parts of the heat pipes due to gravity, the working media are heated by waste heat of the slag and then become saturated steam, heat is released to the tail ends of the heat pipes in the heat accumulator, and phase-change materials absorb heat at the tail ends of the heat pipes and melt the heat;
the completely melted heat accumulator moves out of the furnace slag in an inverted mode, at the moment, the working medium in the heat pipe is at the head, and the phase-change material in the heat accumulator cannot transfer heat to the working medium in the heat pipe, so that the heat pipe is in a non-working state and cannot radiate heat outwards;
when heat is released, the heat accumulator is arranged right, the working medium in the melting heat pipe is heated by an external heat source, the melted working medium flows to the tail part under the influence of gravity, and the working temperature of the high-temperature heat pipe I is higher than that of the phase-change material, so that the high-temperature heat pipe does not work together, the working medium in the high-temperature heat pipe II is heated by the phase-change material to be changed into saturated steam to enter the head part of the heat pipe, on one hand, the non-melting working medium is continuously heated, and on the other hand, the stable heat source is continuously output.
The invention also discloses a thermoelectric power generation device based on the waste heat storage device, which comprises the waste heat storage device, a cold water pool, a thermocouple, an inverter and a transformer;
the heat pipe head end of the second high-temperature heat pipe group is provided with the hot end of the thermocouple, and the hot end of the thermocouple is connected with the cold end of the thermocouple through a lead wire connected in parallel; the cold end of the thermocouple is arranged in the cold water pool; meanwhile, the hot end and the cold end of the thermocouple are respectively connected with the positive input end and the negative input end of the inverter, and the inverter is connected with the transformer.
Compared with the prior art, the phase-change material is used for absorbing the waste heat of the hearth for power generation peak shaving, so that the waste heat of the furnace slag can be recovered, the fuel utilization rate is improved, and the heat pipe is innovatively combined with the heat accumulator; the stored waste heat can be used at any time when needed, can be used for peak regulation, can be transported in different places, and is very convenient. The stored waste heat is released through the heat pipe during subsequent application, and a high-temperature, efficient and stable heat source can be obtained.
The heat storage and heat release of the phase-change material are realized by rightly placing and inversely placing the heat accumulator main body; the phase-change material and the heat pipes work in a matched mode, the heat pipes are divided into two types, one type is a first heat pipe with the working temperature higher than the phase-change temperature, and the other type is a second heat pipe with the working temperature lower than the phase-change temperature. When the heat accumulator main body is vertically placed, the first heat pipe does not work, the second heat pipe works, at the moment, the lower end of the heat pipe is an evaporation section, and the upper end of the heat pipe is a condensation section; when the heat accumulator main body is placed in an inverted mode, the first heat pipe and the second heat pipe work, the lower end of the heat accumulator main body is an evaporation section, and the upper end of the heat accumulator main body is in the heat accumulator and is a condensation section. The invention skillfully utilizes the mode to realize the recycling of the waste heat of the slag.
The invention can further utilize the thermoelectric generation to realize the peak regulation, can simplify the peak regulation process, reduce the workload of the watch personnel and reduce the danger, and utilizes the thermoelectric generation to directly convert the waste heat energy stored in the heat accumulator into electric energy, thereby reducing the physical heat loss of ash slag, further widening the utilization range of the waste heat energy and improving the energy utilization rate.
Drawings
FIG. 1 is a schematic view of the entire apparatus;
FIG. 2 is a schematic view of a regenerator body;
FIG. 3 is a top view of the heat pipe arrangement of the heat accumulator;
FIG. 4 is a schematic view of a heat pipe head protective sheath.
In the figure, a heat accumulator body 1, a first high-temperature heat pipe group 2, a second high-temperature heat pipe group 3, a protective sleeve 4, a pin rib 5, a heat preservation layer or a heat insulation shell 6, a cold water pool 7, an inverter 8 and a transformer 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, an embodiment of a thermoelectric power generation device using slag waste heat to store heat includes a heat accumulator body 1, a first high-temperature heat pipe set 2, a second high-temperature heat pipe set 3, and a protective sleeve 4;
the heat accumulator body 1 is filled with a phase-change material, the first high-temperature heat pipe group 2 is formed by arranging a plurality of first heat pipes, and the second high-temperature heat pipe group 3 is formed by arranging a plurality of second heat pipes; the first heat pipe and the second heat pipe are vertically arranged, the tail ends of the first heat pipe and the second heat pipe are arranged inside the heat accumulator body 1 and are in contact with the phase-change material, and the head ends of the first heat pipe and the second heat pipe are located outside the heat accumulator body 1; the working temperature of the first high-temperature heat pipe set 2 is higher than the phase-change temperature of the phase-change material, and the working temperature of the first high-temperature heat pipe set 2 is lower than the phase-change temperature of the phase-change material;
as shown in fig. 3, a plurality of heat-conducting heat pipe sleeves are arranged on the protective sleeve, the number, distribution form and size of the heat-conducting heat pipe sleeves are all matched with those of the heat pipes located outside the heat accumulator body, and the heat-conducting heat pipe sleeves can be made of high-temperature-resistant metal or ceramic materials. The other parts of the protective sleeve except the heat-conducting heat pipe sleeve have little heat-conducting relation, and a heat-insulating material with high temperature resistance is recommended to be selected. The protective sheath can be dismantled with heat accumulator body 1 and be connected, perhaps the protective sheath design is for having enough space that holds the heat accumulator body to at the heat accumulation stage, lead to the back with the heat accumulator body, directly overlap and establish in the protective sheath.
In a preferred embodiment of the present invention, the medium in the first heat pipe and the second heat pipe can be selected from liquid metals, such as sodium, potassium, or steel; the phase change material is high temperature molten salt such as chloride, carbonate, etc., such as magnesium chloride, mixed salt of lithium hydroxide and lithium fluoride, Na2CO3-BaCO3and/MgO. In order to match the temperature of the residual heat of the slag, the phase-change temperature of the phase-change material is recommended to be 650-750 ℃; the working temperature of the first heat pipe is recommended to be 40-80 ℃ higher than the phase change temperature of the phase change material, and the working temperature of the second heat pipe is recommended to be 40-80 ℃ lower than the phase change temperature of the phase change material. In one embodiment of the invention, the working temperature of the first high-temperature heat pipe is controlled to be about 750 ℃, the phase change temperature of the phase change material is controlled to be about 700 ℃, and the working temperature of the second high-temperature heat pipe is controlled to be about 650 ℃ through the selection of materials. The heat pipe has very good heat transfer efficiency, and under the implemented material working condition, the waste heat storage device has very high efficiency in both a heat storage stage and a heat release stage.
The shell of the heat accumulator body is a heat insulation shell or is provided with a heat insulation layer 6. The outer walls of the parts, located in the heat accumulator body, of the first high-temperature heat pipe group 2 and the second high-temperature heat pipe group are provided with needle ribs 5, and the contact area between the needle ribs and the phase-change material is increased.
In a particular embodiment of the invention, as shown in fig. 2, the first and second heat pipe sets are arranged in different zones of the regenerator body 1.
The protective sleeve is integrally connected with the heat accumulator shell only in a heat accumulation stage, and the heat accumulator and the protective sleeve are connected with the supporting frame when the heat accumulator and the protective sleeve are inverted.
During heat storage, the protective sleeve is worn on the head of the heat pipe at first, the whole heat accumulator is inverted by using the turnover device (the turnover device can fix the protective sleeve and the heat accumulator body), the head of the heat pipe extends into slag, and the protective sleeve can keep the heat pipe clean and not damaged. Working media in the heat pipe flow to the head of the heat pipe due to gravity, are heated by waste heat of slag and then become saturated steam, and release heat to the tail of the heat pipe in the heat accumulator, and the tail of the heat pipe is provided with a pin rib to strengthen the heat dissipation of the heat pipe to the phase change material. The fully melted regenerator removes the slag in an inverted manner. At the moment, the working medium in the heat pipe is at the head, and the phase-change material in the heat accumulator can not transfer heat to the working medium in the heat pipe, so that the heat pipe is in a non-working state, heat can not be dissipated outwards, and heat accumulation can be carried out
The medium in the heat pipe can be gradually cooled and solidified in the normal temperature environment, and after the medium is completely solidified, the working medium can be attached to the head of the heat pipe, so that the working medium cannot fall off even if the working medium is rightly placed.
The regenerator is placed in an upright manner when the heat in the regenerator needs to be applied. When heat is released, the heat accumulator is arranged right, the working medium in the melting heat pipe is heated by an external heat source, the melted working medium flows to the tail part under the influence of gravity, the working temperature of the high-temperature heat pipe I is higher than that of the phase-change material, so that the first heat pipe does not work, the working medium in the second heat pipe is heated by the phase-change material to become saturated steam, the saturated steam enters the head part of the heat pipe, on one hand, the non-melting working medium is continuously heated, and on the other hand, the stable heat.
The waste heat stored in the slag waste heat storage device can be used at any time when in use, can be used for peak regulation, can be transported in different places, is very convenient, and can be released through the heat pipe when in subsequent application, so that a high-temperature, high-efficiency and stable heat source can be obtained. For example, the air, steam and other media can be heated, and the high-temperature air can be used for the occasions of sodium lauryl sulfate spray drying, kaolin spray drying and the like; the high-temperature steam can be used for occasions such as a steam turbine and the like; the present invention can also be used as a heat source of a rankine cycle.
Fig. 4 shows an application of the slag waste heat storage device of the present invention, which is a thermoelectric power generation device using slag waste heat for heat storage. The system comprises a waste heat storage device 1, a cold water pool 7, a thermocouple, an inverter 8 and a transformer 9;
the heat pipe head end of the second high-temperature heat pipe group 3 is provided with the hot end of the thermocouple, and the hot end of the thermocouple is connected with the cold end of the thermocouple through a parallel lead; the cold end of the thermocouple is arranged in the cold water pool; meanwhile, the hot end and the cold end of the thermocouple are respectively connected with the positive input end and the negative input end of the inverter, and the inverter is connected with the transformer.
The cold end is metal which can generate thermoelectrical potential with a thermocouple under different temperature conditions, and the cold end is immersed in a cold water pool when working. The cold end and the thermocouple are connected with the inverter in a parallel mode.
The cold water pool is a normal-temperature water pool which is large enough; the normal temperature is consistent with the ambient temperature, and is not influenced by a heat accumulator or other possible heat sources; sufficiently large means that the pool can remain relatively constant and not warm up due to conduction of heat through the wires.
When power is generated, the heat accumulator body is rightly arranged, the protective sleeve is taken down, the working media in the first heat pipe and the second heat pipe flow to the tail part under the influence of gravity (if the working media are solidified, the working media are heated to be molten firstly), and the working temperature of the first heat pipe is higher than that of the phase-change material, so that the working media in the second heat pipe, which do not work at the moment, of the first heat pipe set are heated by the phase-change material to be changed into saturated steam to enter the head part of the second heat pipe; a thermocouple hot end patch on the second heat pipe group wraps the head of the second heat pipe; the thermocouple hot end patch is positioned at a stable hot end, the thermocouple negative metal is placed in a cold water pool, stable thermoelectric potential is generated at the cold end and the hot end at the moment, direct current can be generated constantly, the direct current is converted into alternating current through an inverter, and the alternating current is boosted through a transformer; and the thermocouple patch and the cold end of each second heat pipe are connected with the inverter in a parallel mode, and only the decreasing thermocouple pair is needed to be added during peak regulation.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention in any way, although the embodiment is only one of the better embodiments, and the structure or content of the present invention can be properly optimized or modified to be equivalent embodiments with equivalent changing effects without departing from the scope of the structural technical solution of the present invention. However, the above-mentioned cases are simply modified, optimized, changed and modified according to the technical essence of the present invention without departing from the technical scheme of the present invention, and all of them fall within the technical scope of the present invention.

Claims (9)

1. A slag waste heat storage device utilizing heat pipes is characterized by comprising a heat accumulator body (1), a first high-temperature heat pipe set (2), a second high-temperature heat pipe set (3) and a protective sleeve (4);
the heat accumulator body (1) is filled with a phase-change material, the first high-temperature heat pipe group (2) is formed by arranging a plurality of first heat pipes, and the second high-temperature heat pipe group (3) is formed by arranging a plurality of second heat pipes; the first heat pipe and the second heat pipe are vertically arranged, the tail ends of the first heat pipe and the second heat pipe are arranged inside the heat accumulator body (1) and are in contact with the phase-change material, and the head ends of the first heat pipe and the second heat pipe are located outside the heat accumulator body (1); the working temperature of the first high-temperature heat pipe set (2) is higher than the phase change temperature of the phase change material, and the working temperature of the first high-temperature heat pipe set (2) is lower than the phase change temperature of the phase change material;
the heat storage device is characterized in that the protective sleeve is provided with a plurality of heat conduction heat pipe sleeves, the number, the distribution form and the size of the heat conduction heat pipe sleeves are matched with those of heat pipes located outside the heat storage body, and the protective sleeve is detachably connected with the heat storage body (1).
2. The apparatus for storing heat by using slag remaining heat of a heat pipe according to claim 1, wherein the casing of the heat accumulator body is a heat insulating casing.
3. The slag waste heat storage device using heat pipes according to claim 1, wherein the first high temperature heat pipe group (2) and the second high temperature heat pipe group are provided with pin ribs on the outer wall of the portion inside the heat accumulator body to increase the contact area with the phase change material.
4. The slag waste heat storage device using the heat pipe as claimed in claim 1, wherein the phase change temperature of the phase change material is 650-750 ℃; the working temperature of the first heat pipe is 40-80 ℃ higher than the phase change temperature of the phase change material, and the working temperature of the second heat pipe is 40-80 ℃ lower than the phase change temperature of the phase change material.
5. A heat storage apparatus using slag waste heat by heat pipes according to claim 1, wherein the first heat pipe and the second heat pipe are arranged in a cross manner or are arranged in different blocks of the heat accumulator body (1).
6. A slag waste heat storage device using a heat pipe according to claim 1, wherein the medium in the first heat pipe is sodium, potassium or strong; the medium in the second heat pipe is sodium, potassium or e.
7. The thermoelectric power generation device utilizing the residual heat of the slag to accumulate heat according to claim 1, wherein the phase-change material is chloride or carbonate.
8. A heat storage method of the waste heat storage device according to any one of claims 1 to 7, characterized by:
during heat storage, firstly, the head parts of the first heat pipe and the second heat pipe, which are exposed outside the heat accumulator body, are worn with protective sleeves, the heat accumulator is integrally turned upside down, the head parts of the first heat pipe and the second heat pipe are inserted into slag, the protective sleeves keep the heat pipes clean and not damaged, working media in the first heat pipe and the second heat pipe flow to the head parts of the heat pipes due to gravity, the working media are heated by waste heat of the slag and then become saturated steam, heat is released to the tail ends of the heat pipes in the heat accumulator, and phase-change materials absorb heat at the tail ends of the heat pipes and melt the heat;
the completely melted heat accumulator moves out of the furnace slag in an inverted mode, at the moment, the working medium in the heat pipe is at the head, and the phase-change material in the heat accumulator cannot transfer heat to the working medium in the heat pipe, so that the heat pipe is in a non-working state and cannot radiate heat outwards;
when heat is released, the heat accumulator is arranged right, the working medium in the melting heat pipe is heated by an external heat source, the melted working medium flows to the tail part under the influence of gravity, and the working temperature of the high-temperature heat pipe I is higher than that of the phase-change material, so that the high-temperature heat pipe does not work together, the working medium in the high-temperature heat pipe II is heated by the phase-change material to be changed into saturated steam to enter the head part of the heat pipe, on one hand, the non-melting working medium is continuously heated, and on the other hand, the stable heat source is continuously output.
9. A thermoelectric power generation device based on the residual heat storage device of any one of claims 1 to 7, characterized by comprising the residual heat storage device of any one of claims 1 to 7, and a cold water pool (7), a thermocouple, an inverter (8) and a transformer (9);
the heat pipe head end of the second high-temperature heat pipe group (3) is provided with the hot end of the thermocouple, and the hot end of the thermocouple is connected with the cold end of the thermocouple through a lead wire connected in parallel; the cold end of the thermocouple is arranged in the cold water pool; meanwhile, the hot end and the cold end of the thermocouple are respectively connected with the positive input end and the negative input end of the inverter, and the inverter is connected with the transformer.
CN202110408997.4A 2021-04-16 2021-04-16 Heat storage device and method for waste heat of slag by using heat pipe Active CN113175835B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058325A (en) * 1979-07-04 1981-04-08 Daimler Benz Ag Heat exchangers using heat pipes
CN201594801U (en) * 2010-01-12 2010-09-29 重庆大学 Heat accumulating type temperature difference power generation device based on thermotube thermoswitch
CN203671960U (en) * 2013-11-17 2014-06-25 成都奥能普科技有限公司 Two-cavity fluid focusing solar optothermal heating, heat transfer and heat storage system
CN106225238A (en) * 2016-08-30 2016-12-14 浙江特富锅炉有限公司 Boiler flue waste heat recovery device
CN108150986A (en) * 2017-12-27 2018-06-12 东南大学 A kind of fuse salt phase-transition heat-storage electric boiler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058325A (en) * 1979-07-04 1981-04-08 Daimler Benz Ag Heat exchangers using heat pipes
CN201594801U (en) * 2010-01-12 2010-09-29 重庆大学 Heat accumulating type temperature difference power generation device based on thermotube thermoswitch
CN203671960U (en) * 2013-11-17 2014-06-25 成都奥能普科技有限公司 Two-cavity fluid focusing solar optothermal heating, heat transfer and heat storage system
CN106225238A (en) * 2016-08-30 2016-12-14 浙江特富锅炉有限公司 Boiler flue waste heat recovery device
CN108150986A (en) * 2017-12-27 2018-06-12 东南大学 A kind of fuse salt phase-transition heat-storage electric boiler

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