CN114562902A - Automatic regulating device and method for working condition of gravity low-temperature heat pipe based on stm32 - Google Patents

Automatic regulating device and method for working condition of gravity low-temperature heat pipe based on stm32 Download PDF

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CN114562902A
CN114562902A CN202210185774.0A CN202210185774A CN114562902A CN 114562902 A CN114562902 A CN 114562902A CN 202210185774 A CN202210185774 A CN 202210185774A CN 114562902 A CN114562902 A CN 114562902A
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heat pipe
heat
temperature
heat exchange
flue gas
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CN114562902B (en
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郑银环
周洲
刘叙
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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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
    • 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
    • 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
    • F28D15/0283—Means for filling or sealing heat pipes
    • 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
    • F28D15/06—Control arrangements therefor
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention discloses a device and a method for automatically adjusting the working condition of a gravity low-temperature heat pipe based on stm32, which is characterized by comprising the following steps: the heat pipe heat exchanger comprises a heat pipe, the top and the bottom of the heat pipe are respectively in sliding connection with an air pipeline and a flue gas pipeline, a steering engine is arranged in the middle of the heat pipe and used for adjusting the inclination angle of the heat pipe, the top and the bottom of the heat pipe are sealed, the middle of the heat pipe is connected with a liquid storage bin and a liquid pump, a heat exchange working medium is pumped into the heat pipe from the liquid storage bin through the liquid pump, the control module calculates the heat exchange power of the heat pipe and then sends an instruction to control the liquid filling amount in the heat pipe according to the calculated power, the heat exchange power is recalculated after the optimal liquid filling amount is reached, and a steering engine positive angle conversion instruction is sent out. The invention applies the gravity low-temperature heat pipe technology to low-temperature flue gas heat recovery and can greatly improve the heat transfer efficiency, so that the low-temperature flue gas is really changed into a recyclable resource. In most applications of the gravity low-temperature heat pipe, the heat transfer efficiency of the heat pipe can be further improved by adjusting the working condition of the heat pipe.

Description

Automatic regulating device and method for working condition of gravity low-temperature heat pipe based on stm32
Technical Field
The invention relates to the technical field of gravity low-temperature heat pipes, in particular to a device and a method for automatically adjusting the working condition of a gravity low-temperature heat pipe based on stm 32.
Background
The heat pipe type heat collector has two types, namely a heat pipe flat plate type heat collector and a heat pipe vacuum tube heat collector, and the working principle is that phase change circulation heat transfer of working media in heat pipes is utilized, so that the heat pipe type heat collector is widely applied to a solar hot water system, a solar heating air conditioning system and the like, the heat exchange efficiency of the heat pipes is improved, the efficiency of the heat collector can be effectively improved, and the heat exchange efficiency of the heat pipes is related to the inclination degree and the liquid filling amount of the heat pipes, even to the external environment of the heat pipes. The existing finned tube type heat exchanger is used for recycling flue gas, only a high-potential heat source is used for kitchen flue gas, the temperature of the discharged flue gas is reduced to serve as an additional value, the nature of waste heat recycling is ignored, the recycled heat is utilized, the influence of the heat on the surrounding environment is not only prevented, and the cost and the maintenance cost are too high while a compressor and the finned heat exchanger occupy a large amount of space.
Therefore, the invention discloses an automatic adjusting device for the working condition of a gravity low-temperature heat pipe, which can be applied to most scenes.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the automatic regulating device and method for the working condition of the gravity low-temperature heat pipe based on stm32, so that the heat transfer efficiency is ensured, and the working efficiency of the device is improved.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a gravity low temperature heat pipe working condition automatic regulating apparatus based on stm32 which characterized in that: the heat pipe comprises a heat pipe, the top and the bottom of the heat pipe are respectively in sliding connection with an air pipeline and a flue gas pipeline, a steering engine is arranged in the middle of the heat pipe and used for adjusting the inclination angle of the heat pipe, the top and the bottom of the heat pipe are sealed, the middle of the heat pipe is connected with a liquid storage bin and a liquid pump, a heat exchange working medium is pumped into the heat pipe from the liquid storage bin through the liquid pump, after calculating heat exchange power of the heat pipe, a control module sends an instruction to control the liquid filling amount in the heat pipe according to the calculated power, recalculates the heat exchange power after the optimal liquid filling amount is reached, and sends an instruction for positive angle conversion of the steering engine.
Further, the top and the bottom of the heat pipe are fixedly connected with arc-shaped sliding blocks, arc-shaped sliding rails are respectively connected to the air pipeline and the flue gas pipeline, and the arc-shaped sliding blocks are in sliding fit with the arc-shaped sliding rails.
Furthermore, heat exchange fins are arranged at the joint of the heat pipe and the flue gas pipeline, and the heat exchange fins are directly connected with the arc-shaped sliding rail.
Furthermore, the air pipeline and the flue gas pipeline are respectively provided with an electromagnetic flowmeter, and the top end and the bottom end of the heat pipe are respectively provided with a temperature sensor.
Further, a heat insulation structure is wrapped outside the heat pipe, and the heat insulation structure comprises a protection layer, a moisture-proof layer and a heat insulation layer; the protective layer adopts polytetrafluoroethylene to prevent the heat pipe from being polluted, the damp-proof layer adopts a damp-proof plate formed by wood chips in a pressing mode, and the heat insulation layer adopts PPS (polyphenylene sulfide) internally wrapped with a single-layer bubble aluminized film.
Furthermore, the heat exchange working medium is Freon, ammonia, alcohol, acetone, water or an organic compound with the working temperature of 200K-550K.
The invention also provides an adjusting method of the automatic adjusting device for the working condition of the stm32 gravity low-temperature heat pipe, which is characterized by comprising the following steps: the method comprises the following steps:
s1, initializing a liquid pump, and injecting a heat exchange working medium into a heat pipe;
s2, calculating heat obtained by the flue gas above according to the temperature rise of a temperature sensor of the air pipeline above in unit time and the flow of the air above, and calculating the heat exchange power of the heat pipe;
s3, calculating the volume of the liquid filling amount in the heat pipe according to the calculated initial power, and regulating the liquid filling amount in the heat pipe according to the calculated liquid filling amount;
step S4, recalculating the heat exchange power, sending a steering engine positive angle conversion instruction, calculating the heat exchange power again after conversion, if the heat exchange difference of the heat pipe is increased, namely the heat exchange power is increased, continuing to perform positive angle conversion, and if not, returning to the state of increased temperature to perform negative angle conversion; the heat exchange power can not be improved until the positive angle and the negative angle are changed.
Further, in step S2, the calculation formula of the heat exchange power of the heat pipe is as follows,
Figure BDA0003523354000000021
in the formula CAir (a)Specific heat capacity of air
qv-upper flue gas flow
ρAir (a)Density of air
T2Temperature of the air above one minute after the work collection point
T1-the temperature of the air above the working pick-up point.
Further, in the step S3,
the calculation formula of the filling liquid amount to be filled is
Figure BDA0003523354000000022
In the formula CWorking mediumSpecific heat capacity of the working fluid
ρWorking mediumDensity of the working fluid
TFBoiling point of heat exchange medium
T1The temperature of the air above the working collection point, i.e. the ambient temperature.
Compared with the prior art, the invention has the following beneficial effects:
the invention has low starting cost and maintenance cost and small occupied space, and the heat transfer efficiency can be greatly improved by applying the gravity low-temperature heat pipe technology to low-temperature flue gas heat recovery, so that the low-temperature flue gas is really changed into a recyclable resource. In most applications of the gravity low-temperature heat pipe, the heat transfer efficiency of the heat pipe can be further improved by adjusting the working condition of the heat pipe, so that more economic values are created. And the gravity low-temperature heat pipe can be applied to more fields with high heat transfer efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an electromagnetic flow meter and temperature sensor installation location of the present invention;
FIG. 3 is a schematic view of an insulation structure;
FIG. 4 is a control module schematic
FIG. 5 is a schematic view of a fin structure;
FIG. 6 is a flow chart of the algorithm of the present invention;
in the drawings:
the device comprises a heat pipe 1, an arc-shaped sliding block 2, an arc-shaped sliding rail 3, a control module 4, an air pipeline 5, a flue gas pipeline 6, a temperature sensor 7, an electromagnetic flowmeter 8, a protective layer 9, a moisture-proof layer 10, a thermal insulation layer 11, a steering engine 12, a liquid storage bin and a liquid pump 13, an air channel 14 and a connection part of the arc-shaped sliding rail 15 and the pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a gravity low temperature heat pipe working condition automatic regulating apparatus based on stm32, includes the heat pipe, heat pipe top and bottom sliding connection air conduit 5 and flue gas pipeline 6 respectively, 1 middle part of heat pipe sets up steering wheel 12 and is used for adjusting 1 inclination of heat pipe, wherein its middle part of its top of heat pipe 1 and bottom seal connects liquid storage storehouse and liquid pump 13, through the liquid pump by liquid storage storehouse to heat exchange medium is pumped into in the heat pipe 1, control module 4 calculates behind the heat exchange power of heat pipe 1 according to the power transmission instruction control heat pipe 1 in the liquid charge volume of calculating, recalculates heat transfer power after reaching the best liquid charge volume to send steering wheel 12 positive angle transform instruction.
In the above embodiment, the air duct 5 and the flue gas duct 6 are respectively provided with an electromagnetic flowmeter 8, and the top end and the bottom end of the heat pipe 1 are respectively provided with a temperature sensor 7. The electromagnetic flow meter 8 is used for detecting the flow of gas flowing through the flue gas channel, the upper temperature sensor 7 is used for detecting the temperature difference before and after heat transfer of the heat pipe 1, and the lower temperature sensor 7 and the flow meter act together to detect whether the temperature and the flow of the flue gas pipeline 6 reach starting conditions, namely the temperature exceeds 60 ℃ and the flow is larger than the upper air flow. The temperature sensor 7 adopts a PT100 patch type temperature sensor 7.
The top and the bottom of the heat pipe 1 are fixedly connected with arc-shaped sliding blocks 2, the air pipeline 5 and the flue gas pipeline 6 are respectively connected with arc-shaped sliding rails 3, and the arc-shaped sliding blocks 2 are in sliding fit with the arc-shaped sliding rails 3. The inclination angle of the heat pipe 1 can be adjusted by driving the steering engine 12 on the heat pipe 1. The arc-shaped sliding block 2 and the arc-shaped rail are both made of wear-resistant copper alloy, so that heat transfer is guaranteed, and relative movement can be performed at the same time, so that the inclination angle of the heat pipe 1 can be adjusted. The steering engine 12 adopts an RDS5160 steering engine, the steering engine 12 is directly connected with the control module 4, and the control module 4 is internally provided with a stm32f103 microprocessor powered by a lithium battery. In the figure 13, a liquid storage bin and a liquid pump 13 are used for exchanging liquid with the heat pipe 1 through the liquid pump when the control module 4 controls the liquid adding and reducing of the liquid. When the control module 4 has no instruction, the valve is closed to prevent the liquid work from being influenced.
The heat pipe 1 is externally wrapped with a heat insulation structure, and the heat insulation structure is composed of three layers, namely a protective layer 9, a moisture-proof layer 10 and a heat insulation layer 11, because the main factor influencing the heat transfer efficiency of the heat pipe 1 is external convection heat transfer thermal resistance. The protective layer 9 is used for protecting the heat pipe 1 from being polluted by external oil smoke, solid impurities and the like; the moisture-proof layer 10 is used for preventing the heat pipe 1 from being rusted due to moisture, so that the service life of the heat pipe 1 is shortened; the heat insulation layer 11 is used for isolating the inside and the outside of the heat pipe 1, reducing the heat resistance of external convection heat exchange when the heat pipe 1 is transferred, ensuring the heat transfer efficiency and improving the working efficiency of the device. The protective layer 9 is made of polytetrafluoroethylene and used for preventing the heat pipe 1 from being polluted, the moisture-proof layer 10 is a moisture-proof plate formed by wood chips in a pressing mode, and the heat insulation layer 11 is made of PPS (polyphenylene sulfide) with a single-layer bubble aluminized film wrapped inside.
The heat pipe 1 with flue gas pipeline 6 junction is equipped with heat transfer fin, heat transfer fin lug connection arc slide rail 3. The part of the heat pipe 1 close to the heat transfer module is designed with a fin structure for enhancing heat exchange. The fin is aluminium system, and aluminium system fin direct connection copper alloy slide rail is used for the transmission heat. The specific connection mode is liquid in the heat pipe 1, the outer wall of the heat pipe 1, the copper alloy slide rail, the outer wall of the pipeline and the fins. The 15 is the junction of arc slide rail and pipeline, and the fin centre is air channel 14, and the air can absorb the heat that comes from the heat pipe to the utmost extent when passing through the passageway, also can transmit the heat in the flue gas to the heat pipe 1 to the utmost extent simultaneously. The amount of heat transferred through the heat pipe 1 to other parts of the device is reduced, thereby further increasing the heat transfer efficiency of the heat pipe 1.
The liquid filling amount is controlled through calculation after the liquid pump is initialized, the heat exchange power is recalculated after the optimal liquid filling amount is reached, a positive angle conversion instruction of the steering engine 12 is sent, the angle converted every time is 2 degrees, the heat exchange power is calculated again after conversion, if the heat exchange difference of the heat pipe is increased (namely the heat exchange power is increased), the positive angle conversion is continued, and if not, the heat pipe returns to the state with the increased temperature to perform negative angle conversion. The heat exchange power can not be improved until the positive angle and the negative angle are changed. The purpose is to control the steering engine 12 in the operation module on the basis of ensuring the improvement of the heat exchange power of the heat pipe.
In this embodiment, the control module 4 is equipped with an stm32f103 microprocessor, and the two temperature sensors 7 and the two electromagnetic flow meters 8 exchange data with the control module 4 through the ESP-01 wireless module and the processor in the arithmetic module. The invention utilizes the liquid working medium in the gravity low-temperature heat pipe to transfer heat, the working medium of the low-temperature heat pipe comprises Freon, ammonia, alcohol, acetone, water and certain organic compounds with the temperature of 200K-550K, wherein the working temperature of the acetone is 0-120 ℃, and the low-temperature heat pipe is relatively suitable for transferring heat of a kitchen. The invention takes acetone as an example for calculation. The diameter of a single heat pipe used by the invention is 16mm, and the heat conduction effect of the heat pipe is better.
In the initial state, the steering engine 12 of the operating module is at an angle of 0 °, and the liquid pump is initialized, which is defined as 60% of the maximum charge, which is about 643mL if a heat pipe with a diameter of 16mm and a length of 800mm is used. After initialization is finished, after the flue gas pipeline 6 which is positioned below and receives heat enters a working state, the temperature of the upper temperature sensor 7 rises, the air density is 1.293g/L under standard atmospheric pressure, the specific heat capacity of the air is approximately regarded as 1.005 kJ/(kg.K), at the moment, the microprocessor can calculate the heat obtained by the upper flue gas according to the temperature rise of the temperature sensor 7 of the upper flue gas pipeline 6 and the flow of the upper flue gas in unit time (one minute is taken here), and then the heat exchange power of the heat pipe is calculated, wherein the calculation formula is as follows
Figure BDA0003523354000000051
In the formula CAir (a)Specific heat capacity of air
qv-upper flue gas flow
ρAir (a)Density of air
T2Temperature of the air above one minute after the working collection point
T1Temperature of air above the working collection point
After the initial power is calculated, the operation module can be controlled according to the power sending instruction to change the liquid filling amount, and the specific calculation formula of the liquid filling amount to be filled is
Figure BDA0003523354000000052
In the formula CAcetone (II)Specific heat capacity of acetone
ρAcetone (II)Density of acetone
TFBoiling point of acetone
T1The temperature of the air above the working collection point, i.e. the ambient temperature.
The purpose of the calculation is to ensure that the heat exchange power just can completely evaporate the working medium in the heat pipe, and the reason is that when the heat input value of the evaporation section does not reach the value of completely evaporating the working medium, liquid residue always exists in the heat pipe, and the residual liquid cannot be evaporated to participate in heat exchange, so that the heat exchange efficiency is reduced; when the heat input value of the evaporation section exceeds the value of completely evaporating the working medium, the gas occupies most space in the heat pipe, the liquid only exists in the flowing part of the heat pipe, and the liquid at the bottom of the heat pipe cannot transfer heat in time. And after the liquid filling amount with the highest power is found, sending the instruction again to change the inclination angle, wherein under the condition of the same liquid filling amount, the relation between the inclination angle and the power does not change linearly, and the microprocessor controls the inclination angle to change in a trial mode until the maximum power of the current liquid filling amount is found.
The liquid filling pump and the steering engine 12 which are positioned outside the heat pipe can receive signals of the microprocessor through wireless transmission to control the liquid filling pump to fill or discharge liquid, the liquid filling pump adopts a KLP180 series diaphragm pump, the liquid volume of liquid filling and liquid pumping can be controlled by controlling the starting time in the pump, the liquid filling or the liquid pumping is controlled by controlling the positive and negative rotation of a motor in the pump, and the steering engine 12 is controlled to rotate at a specified angle.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a gravity low temperature heat pipe working condition automatic regulating apparatus based on stm32 which characterized in that: the heat pipe heat exchanger comprises a heat pipe, the top and the bottom of the heat pipe are respectively in sliding connection with an air pipeline and a flue gas pipeline, a steering engine is arranged in the middle of the heat pipe and used for adjusting the inclination angle of the heat pipe, the top and the bottom of the heat pipe are sealed, the middle of the heat pipe is connected with a liquid storage bin and a liquid pump, a heat exchange working medium is pumped into the heat pipe from the liquid storage bin through the liquid pump, the control module calculates the heat exchange power of the heat pipe and then sends an instruction to control the liquid filling amount in the heat pipe according to the calculated power, the heat exchange power is recalculated after the optimal liquid filling amount is reached, and a steering engine positive angle conversion instruction is sent out.
2. The automatic regulating device for the working condition of the stm 32-based gravity low-temperature heat pipe according to claim 1, wherein: the top and the bottom of the heat pipe are fixedly connected with arc-shaped sliding blocks, the air pipeline and the flue gas pipeline are respectively connected with arc-shaped sliding rails, and the arc-shaped sliding blocks are in sliding fit with the arc-shaped sliding rails.
3. The automatic regulating device for the working condition of the stm 32-based gravity low-temperature heat pipe according to claim 1, wherein: and heat exchange fins are arranged at the joint of the heat pipe and the flue gas pipeline and are directly connected with the arc-shaped sliding rail.
4. The automatic regulating device for the working condition of the stm 32-based gravity low-temperature heat pipe as claimed in claim 1, wherein: and the air pipeline and the flue gas pipeline are respectively provided with an electromagnetic flowmeter, and the top end and the bottom end of the heat pipe are respectively provided with a temperature sensor.
5. The automatic regulating device for the working condition of the stm 32-based gravity low-temperature heat pipe according to claim 1, wherein: the heat pipe is externally wrapped with a heat insulation structure, and the heat insulation structure comprises a protective layer, a moisture-proof layer and a heat insulation layer; the protective layer adopts polytetrafluoroethylene to prevent the heat pipe from being polluted, the damp-proof layer adopts a damp-proof plate formed by pressing sawdust, and the heat insulation layer adopts PPS (polyphenylene sulfide) internally wrapped with a single-layer bubble aluminized film.
6. The automatic regulating device for the working condition of the stm 32-based gravity low-temperature heat pipe according to claim 1, wherein: the heat exchange working medium is Freon, ammonia, alcohol, acetone, water or an organic compound with the working temperature of 200-550K.
7. An adjusting method of the automatic adjusting device for the working condition of stm32 based on the gravity force low temperature heat pipe of any one of claims 1-6, wherein the adjusting method comprises the following steps: the method comprises the following steps:
s1, initializing a liquid pump, and injecting a heat exchange working medium into a heat pipe;
s2, calculating heat obtained by the flue gas above according to the temperature rise of a temperature sensor of the air pipeline above in unit time and the flow of the air above, and calculating the heat exchange power of the heat pipe;
s3, calculating the volume of the liquid filling amount in the heat pipe according to the calculated initial power, and regulating the liquid filling amount in the heat pipe according to the calculated liquid filling amount;
step S4, recalculating the heat exchange power, sending a steering engine positive angle conversion instruction, calculating the heat exchange power again after conversion, if the heat exchange difference of the heat pipe is increased, namely the heat exchange power is increased, continuing to perform positive angle conversion, and if not, returning to the state of increased temperature to perform negative angle conversion; the heat exchange power can not be improved until the positive angle and the negative angle are changed.
8. The method for adjusting an automatic regulator of stm32 gravity-assisted low temperature heat pipe operation according to claim 7, wherein: in step S2, the calculation formula of the heat exchange power of the heat pipe is as follows,
Figure FDA0003523353990000021
in the formula CAir (a)Specific heat capacity of air
qv-upper flue gas flow
ρAir (W)Density of air
T2Temperature of the air above one minute after the work collection point
T1-the temperature of the air above the working pick-up point.
9. The method for adjusting an automatic operating condition adjusting device for stm32 gravity low temperature heat pipe according to claim 7, wherein: in the step S3, in the above step,
the calculation formula of the filling liquid amount to be filled is
Figure FDA0003523353990000022
In the formula CWorking mediumSpecific heat capacity of acetone
ρWorking mediumDensity of acetone
TFBoiling point of heat exchange medium
T1The temperature of the air above the working collection point, i.e. the ambient temperature.
CN202210185774.0A 2022-02-28 2022-02-28 Automatic gravity low-temperature heat pipe working condition adjusting device and method based on stm32 Active CN114562902B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205448287U (en) * 2016-01-07 2016-08-10 山东双力现代农业装备有限公司 Many fuel heat pipe indirect heating hot -blast furnace
CN208547134U (en) * 2018-03-29 2019-02-26 广东努谢尔环境科技有限公司 Geothermal energy collects heat pipe and heat pipe-type geothermal energy collection system
CN109539851A (en) * 2018-12-25 2019-03-29 陕西大秦环境科技有限公司 A kind of modularization self-interacting type heat-pipe flue gas waste heat recovery
CN110118502A (en) * 2019-04-11 2019-08-13 广东绿建联节能服务有限公司 A kind of boiler afterheat reclaiming system
CN110425510A (en) * 2019-08-26 2019-11-08 南京工业大学 Parallel small-diameter heat pipe enhanced heat exchange device for recycling waste heat of medium-low temperature flue gas and preparation method thereof
CN110521628A (en) * 2019-10-22 2019-12-03 临沂大学 A kind of farm's temperature control device with various temperature regulative mode

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205448287U (en) * 2016-01-07 2016-08-10 山东双力现代农业装备有限公司 Many fuel heat pipe indirect heating hot -blast furnace
CN208547134U (en) * 2018-03-29 2019-02-26 广东努谢尔环境科技有限公司 Geothermal energy collects heat pipe and heat pipe-type geothermal energy collection system
CN109539851A (en) * 2018-12-25 2019-03-29 陕西大秦环境科技有限公司 A kind of modularization self-interacting type heat-pipe flue gas waste heat recovery
CN110118502A (en) * 2019-04-11 2019-08-13 广东绿建联节能服务有限公司 A kind of boiler afterheat reclaiming system
CN110425510A (en) * 2019-08-26 2019-11-08 南京工业大学 Parallel small-diameter heat pipe enhanced heat exchange device for recycling waste heat of medium-low temperature flue gas and preparation method thereof
CN110521628A (en) * 2019-10-22 2019-12-03 临沂大学 A kind of farm's temperature control device with various temperature regulative mode

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