CN114562902B - Automatic gravity low-temperature heat pipe working condition adjusting device and method based on stm32 - Google Patents
Automatic gravity low-temperature heat pipe working condition adjusting device and method based on stm32 Download PDFInfo
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- CN114562902B CN114562902B CN202210185774.0A CN202210185774A CN114562902B CN 114562902 B CN114562902 B CN 114562902B CN 202210185774 A CN202210185774 A CN 202210185774A CN 114562902 B CN114562902 B CN 114562902B
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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
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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
- F28D15/0283—Means for filling or sealing heat pipes
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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
- F28D15/06—Control arrangements therefor
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Life Sciences & Earth Sciences (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a gravity low-temperature heat pipe working condition automatic regulating device and a method based on stm32, which are characterized in that: the heat pipe comprises a heat pipe, the top and the bottom of the heat pipe are respectively connected with an air pipeline and a flue gas pipeline in a sliding manner, a steering engine is arranged in the middle of the heat pipe and used for adjusting the inclination angle of the heat pipe, wherein 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 through the liquid pump from the liquid storage bin, a control module is used for controlling the liquid filling amount in the heat pipe according to a calculated power transmission instruction after calculating the heat exchange power of the heat pipe, and a steering engine positive angle conversion instruction is sent out after the optimal liquid filling amount is reached. The gravity low-temperature heat pipe technology is used for low-temperature flue gas heat recovery, and the heat transfer efficiency can be greatly improved, so that the low-temperature flue gas is really changed into a recyclable resource. In most of 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
Technical Field
The invention relates to the technical field of low-temperature gravity heat pipes, in particular to an automatic regulating device and method for the working condition of a low-temperature gravity heat pipe based on stm 32.
Background
The heat pipe type heat collector has two kinds of heat pipe flat plate type heat collector and heat pipe vacuum tube heat collector, its working principle is to utilize the phase change circulation heat transfer of working medium in the heat pipe, it is widely used in solar water heating system and solar heating air conditioning system etc. therefore the efficiency of improving heat pipe heat exchange can effectively improve the efficiency of heat collector, and the heat pipe heat exchange efficiency and its gradient, liquid filling volume even relate to the external environment of heat pipe. The existing flue gas recovery through the fin-tube heat exchanger only uses a high-potential heat source on kitchen flue gas, reduces the temperature of the flue gas as an added value, neglects the essence of waste heat recovery to utilize the recovered heat, not only prevents the influence of the heat on the surrounding environment, but also has the defects of excessively high cost and maintenance cost when a large amount of space is occupied by using the compressor and the fin heat exchanger.
Therefore, the invention provides the gravity low-temperature heat pipe working condition automatic adjusting device which can be applied to most scenes.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an automatic gravity low-temperature heat pipe working condition adjusting device and method based on stm32, which ensure heat transfer efficiency and improve working efficiency of the device.
In order to solve the technical problems, the invention provides the following technical scheme:
an automatic gravity low-temperature heat pipe working condition adjusting device based on stm32 is characterized in that: the heat pipe comprises a heat pipe, the top and the bottom of the heat pipe are respectively connected with an air pipeline and a flue gas pipeline in a sliding manner, a steering engine is arranged in the middle of the heat pipe and used for adjusting the inclination angle of the heat pipe, wherein 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 through the liquid pump from the liquid storage bin, a control module is used for controlling the liquid filling amount in the heat pipe according to a calculated power transmission instruction after calculating the heat exchange power of the heat pipe, and a steering engine positive angle conversion instruction is sent out after the optimal liquid filling amount is reached.
Further, 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.
Further, a heat exchange fin is arranged at the joint of the heat pipe and the flue gas pipeline, and the heat exchange fin is directly connected with the arc sliding rail.
Further, electromagnetic flow meters are respectively arranged on the air pipeline and the flue gas pipeline, and temperature sensors are respectively arranged at the top end and the bottom end of the heat pipe.
Further, the heat pipe is wrapped with a heat insulation structure, and the heat insulation structure comprises a protection layer, a dampproof layer and a heat insulation layer; wherein the protective layer adopts polytetrafluoroethylene to prevent the heat pipe from being polluted, the dampproof layer adopts a dampproof plate formed by wood dust lamination, and the heat insulating layer adopts PPS with a single-layer bubble aluminized film wrapped inside.
Further, 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 gravity low-temperature heat pipe of stm32, 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 the heat obtained by the upper smoke according to the temperature rise of a temperature sensor of an upper air pipeline and the flow of upper air in unit time, so as to calculate 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;
s4, recalculating 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, otherwise, returning to a state of temperature increase to perform negative angle conversion; the heat exchange power cannot be improved until the positive and negative angles are changed.
Further, in the step S2, the calculation formula of the heat exchange power of the heat pipe is as follows,
c in the formula Air-conditioner Specific heat capacity of air
qv-upper flue gas flow
ρ Air-conditioner Density of air
T 2 Temperature of the air above after one minute from the working collection point
T 1 -the temperature of the air above the working collection point.
Further, in the step S3,
the calculation formula of the filling amount to be filled is
C in the formula Working medium Specific heat capacity of working medium
ρ Working medium Density of working medium
T F -heat exchangerBoiling point of mass
T 1 The temperature of the air above the working collection point is the normal 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 gravity low-temperature heat pipe technology is used for recovering the heat of the low-temperature flue gas, so that the heat transfer efficiency can be greatly improved, and the low-temperature flue gas is really changed into a recoverable resource. In most of 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. Gravity low temperature heat pipes can also 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 the electromagnetic flowmeter and temperature sensor mounting locations of the present invention;
FIG. 3 is a schematic view of an insulation structure;
FIG. 4 is a schematic diagram of a control module
FIG. 5 is a schematic diagram of a fin structure;
FIG. 6 is a flowchart of an algorithm of the present invention;
in the accompanying 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 heat-insulating layer 11, a steering engine 12, a liquid storage bin 13, a liquid pump 14 and an air channel 15.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure 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, air pipe 5 and flue gas pipeline 6 are connected to heat pipe top and bottom sliding connection respectively, 1 middle part of heat pipe sets up steering wheel 12 is used for adjusting 1 inclination of heat pipe, wherein 1 top and bottom of heat pipe are sealed its middle part and are connected liquid storage storehouse and liquid pump 13, pump into heat transfer medium in the heat pipe 1 through the liquid pump by liquid storage storehouse, control module 4 is after calculating 1 heat transfer power of heat pipe, according to the power transmission instruction control heat pipe 1 that calculates liquid charge volume, calculate heat transfer power again after reaching the best liquid charge volume, and 12 positive angle transform instruction of steering wheel.
In the above embodiment, the air pipe 5 and the flue gas pipe 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 flowmeter 8 is used for detecting the flow rate of the 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 flowmeter work together to detect whether the temperature and the flow rate of the flue gas pipeline 6 reach the starting condition, namely, the temperature exceeds 60 ℃ and the flow rate is larger than the upper air flow rate. 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 an arc-shaped sliding block 2, an air pipeline 5 and a flue gas pipeline 6 are respectively connected with an arc-shaped sliding rail 3, and the arc-shaped sliding block 2 is in sliding fit with the arc-shaped sliding rail 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 track are both made of wear-resistant copper alloy, so that the relative movement can be performed while heat transfer is guaranteed, and the inclination angle of the heat pipe 1 is adjusted. Steering engine 12 adopts RDS5160 steering engine, steering engine 12 is directly connected with control module 4, contains lithium cell powered stm32f103 microprocessor in the control module 4. In the figure, a liquid storage bin and a liquid pump 13 are shown, and liquid exchange is carried out between the liquid pump and the heat pipe 1 when the control module 4 controls liquid adding and subtracting. Closing the valve when the control module 4 is not instructed prevents affecting the operation of the liquid.
The heat pipe 1 is wrapped with a heat insulation structure, and the heat insulation structure is composed of three layers of a protective layer 9, a dampproof layer 10 and a heat insulation layer 11 because the main factor affecting the heat transfer efficiency of the heat pipe 1 is external convection heat exchange resistance. The protective layer 9 is used for protecting the heat pipe 1 from being polluted by external oil smoke, solid sundries and the like; the moisture-proof layer 10 is used for preventing the heat pipe 1 from being wetted and rusted, so that the service life of the heat pipe 1 is reduced; the heat insulation layer 11 is used for isolating the inside and the outside of the heat pipe 1, reducing the external convection heat exchange thermal resistance during the heat pipe 1 transfer, ensuring the heat transfer efficiency and improving the working efficiency of the device. Wherein the protection layer 9 adopts polytetrafluoroethylene for preventing the heat pipe 1 from being polluted, the dampproof layer 10 adopts a dampproof plate formed by pressing wood chips, and the heat insulation layer 11 adopts PPS with a single-layer bubble aluminized film wrapped inside.
The joint of the heat pipe 1 and the flue gas pipeline 6 is provided with heat exchange fins, and the heat exchange fins are directly connected with the arc sliding rail 3. The portion of the heat pipe 1 close to the heat transfer module is designed with a fin structure for enhancing heat exchange. The fins are made of aluminum, and the aluminum fins are directly connected with the copper alloy sliding rail and are used for transferring heat. The concrete connection mode is that liquid in the heat pipe 1, the outer wall of the heat pipe 1, a copper alloy slide rail, the outer wall of a pipeline and fins. 15 are arc slide rail and pipeline junction, the fin is the air channel 14 in the middle, and the heat from the heat pipe can be absorbed to the maximum degree when the air passes through the passageway, also can transfer the heat in the flue gas to heat pipe 1 to the maximum degree simultaneously. Reducing the amount of heat transferred through the heat pipe 1 to other parts of the device, thereby further increasing the heat transfer efficiency of the heat pipe 1.
After the liquid pump is initialized, the liquid filling amount is controlled through calculation, the heat exchange power is recalculated after the optimal liquid filling amount is reached, and a steering engine 12 positive angle conversion instruction is sent out, wherein the angle of each conversion 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 continuously carried out, and otherwise, the state of temperature increase is returned to carry out the negative angle conversion. The heat exchange power cannot be improved until the positive and negative angles are changed. The steering engine 12 in the operation module is controlled based on the improvement of heat exchange power of the heat pipe.
In this embodiment, the control module 4 is equipped with a stm32f103 microprocessor, and the two temperature sensors 7 and the two electromagnetic flowmeters 8 exchange data with the control module 4 through an ESP-01 wireless module and a processor in the operation module. The invention uses 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 invention is more suitable for transferring heat of a kitchen. The invention is calculated using acetone as an example. The diameter of the single heat pipe used by the invention is 16mm, and the heat pipe has better heat conduction effect.
In the initial state, the steering engine 12 angle of the operation module is 0 degrees, the liquid pump is initialized, the liquid pump is defined as filling 60% of the maximum liquid filling amount, and if a heat pipe with the diameter of 16mm and the length of 800mm is used, the liquid filling amount is about 643mL. After the initialization is completed, the temperature of the upper temperature sensor 7 rises after the flue gas pipeline 6 which is positioned below and receives heat enters into a working state, 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 (taking one minute), thereby calculating the heat exchange power of the heat pipe, and the calculation formula is as follows
C in the formula Air-conditioner Specific heat capacity of air
qv-upper flue gas flow
ρ Air-conditioner Density of air
T 2 Temperature of the air above after one minute from the working collection point
T 1 -temperature of air above the working collection point
After the initial power is calculated, the operation module can be controlled to change the liquid filling amount according to the power transmission instruction, and the calculation formula of the liquid filling amount to be filled specifically is as follows
C in the formula Acetone (acetone) Specific heat capacity of acetone
ρ Acetone (acetone) Density of acetone
T F Boiling point of acetone
T 1 The temperature of the air above the working collection point is the normal temperature.
The purpose of the calculation is to enable the heat exchange power to enable the working medium in the heat pipe to be completely evaporated, because when the heat input value of the evaporation section does not reach the value for enabling the working medium to be completely evaporated, liquid residues always exist 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 for completely evaporating the working medium, the gas occupies most of the space in the gate, the liquid only exists in the flowing part of the heat pipe, and the bottom of the heat pipe cannot be timely heat-transferred by the liquid. When the highest power filling amount is found, the instruction is sent again to change the inclination angle, and the relation between the inclination angle and the power is not changed linearly under the condition of the same filling amount, so that the microprocessor can control the inclination angle to perform trial change until the highest power of the current 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, the liquid filling pump is controlled to fill or discharge liquid, the liquid filling pump adopts KLP180 series diaphragm pumps, the liquid volume of liquid filling and liquid drawing can be controlled by controlling the starting time in the pump, the liquid filling or liquid drawing 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 embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (7)
1. An automatic gravity low-temperature heat pipe working condition adjusting device based on stm32 is characterized in that: the heat pipe comprises a heat pipe, wherein the top and the bottom of the heat pipe are respectively and slidably connected 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 the heat exchange power of the heat pipe is calculated by a control module, the liquid filling quantity in the heat pipe is controlled according to a calculated power transmission instruction, the heat exchange power is recalculated after the optimal liquid filling quantity is reached, and a steering engine positive angle conversion instruction is sent;
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;
and the joint of the heat pipe and the flue gas pipeline is provided with heat exchange fins, and the heat exchange fins are directly connected with the arc sliding rail.
2. The stm 32-based automatic gravity low temperature heat pipe operation condition adjusting device according to claim 1, wherein: electromagnetic flow meters are respectively arranged on the air pipeline and the flue gas pipeline, and temperature sensors are respectively arranged at the top end and the bottom end of the heat pipe.
3. The stm 32-based automatic gravity low temperature heat pipe operation condition adjusting device according to claim 1, wherein: the heat pipe is wrapped with a heat insulation structure, and the heat insulation structure comprises a protection layer, a dampproof layer and a heat insulation layer; wherein the protective layer adopts polytetrafluoroethylene to prevent the heat pipe from being polluted, the dampproof layer adopts a dampproof plate formed by wood dust lamination, and the heat insulating layer adopts PPS with a single-layer bubble aluminized film wrapped inside.
4. The stm 32-based automatic gravity low temperature heat pipe operation condition adjusting device 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 200K-550K.
5. A method for adjusting an stm 32-based gravity low temperature heat pipe operation condition automatic adjusting device according to any one of claims 1 to 4, wherein: the method comprises the following steps:
s1, initializing a liquid pump, and injecting a heat exchange working medium into a heat pipe;
s2, calculating the heat obtained by the upper smoke according to the temperature rise of a temperature sensor of an upper air pipeline and the flow of upper air in unit time, so as to calculate 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;
s4, recalculating 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, otherwise, returning to a state of temperature increase to perform negative angle conversion; the heat exchange power cannot be improved until the positive and negative angles are changed.
6. A method for adjusting an stm 32-based gravity low temperature heat pipe operation condition automatic adjusting device according to claim 5, wherein: in the step S2, the calculation formula of the heat exchange power of the heat pipe is as follows,
c in the formula Air-conditioner Specific heat capacity of air
qv-upper flue gas flow
ρ Air-conditioner Density of air
T 2 Temperature of the air above after one minute from the working collection point
T 1 -the temperature of the air above the working collection point.
7. A method for adjusting an stm 32-based gravity low temperature heat pipe operation condition automatic adjusting device according to claim 5, wherein: in the step S3 of the above-mentioned process,
the calculation formula of the filling amount to be filled is
C in the formula Working medium Specific heat capacity of acetone
ρ Working medium Density of acetone
T F Boiling point of heat exchange medium
T 1 The temperature of the air above the working collection point is the normal temperature.
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| 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 |
| CN109539851B (en) * | 2018-12-25 | 2023-04-14 | 陕西大秦环境科技有限公司 | Modularized self-adjusting heat pipe flue gas waste heat recovery system |
| 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 |
| CN110425510B (en) * | 2019-08-26 | 2020-11-10 | 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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