CN203240792U - Thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device - Google Patents
Thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device Download PDFInfo
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- CN203240792U CN203240792U CN2013202540310U CN201320254031U CN203240792U CN 203240792 U CN203240792 U CN 203240792U CN 2013202540310 U CN2013202540310 U CN 2013202540310U CN 201320254031 U CN201320254031 U CN 201320254031U CN 203240792 U CN203240792 U CN 203240792U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device which comprises a thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection element and a thermal-insulated water tank. The thermal-insulated water tank is heat-transferring connection with the thin-strip capillary liquid-suction working medium high concentration eccentric direct heating pipe vacuum heat-collection element. The thin-strip capillary liquid-suction working medium high concentration eccentric direct heating pipe vacuum heat-collection element comprises an eccentric full-glass vacuum heat-collection pipe and an inserting type glass heating pipe inserted into an eccentric glass pipe inner cavity of the full-glass vacuum heat-collection pipe, and the thin-strip capillary liquid-suction working medium high concentration eccentric direct heating pipe vacuum heat-collection element is characterized in that a thin-strip capillary liquid-suction core with width from 2 to 30 millimeters is arranged inside the hot end of the heating pipe. The eccentric inner glass pipe of the eccentric full-glass vacuum heat-collection pipe is arranged in an eccentric mode relative to a cover glass pipe, and the eccentric inner glass pipe is in concentrated connection with a semicircular mirror face on the cover glass pipe. The thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device can accelerate the starting of the heating pipe to the greatest extent, and enables the internal pressure of the glass heating pipe to keep at a low position during air drying.
Description
Technical field
The utility model relates to a slice capillary wick working medium high position and gathers eccentric directly-heated pipe vacuum heat collecting device.
Background technology
Vacuum heat collection element arranges a vacuum heat-insulating layer between its cover glass tube and inner glass tube, can make the vacuum solar water heater that also can provide the domestic hot-water winter.With the solar water heater of heat-pipe vacuum heat collecting pipe manufacturing have more in the pipe anhydrous Energy Efficiency Ratio high, meet safe drinking water standard, single tube and damage the advantage such as in the same old way work.Therefore.Anhydrous solar energy evacuated water-both with hot pipe might capture the increasing market share in the pipe.
Existing a kind of workload fills eccentric all-glass heat pipe vacuum collector tube solar water heater seldom, and heat pipe inner wall adopts light-pipe structure, heat-pipe vacuum heat collecting pipe 45 degree that tilt approximately to install.Under non-heat exchange state, can observe the heat pipe bottom has liquid refrigerant to gather.
It is carried out and the eccentric all-glass vacuum thermal-collecting tube solar water heater check experiment of managing interior water, find that the intensification situation of heat pipe solar energy water heater is slow soon rear first.Judgement is that the heat pipe start-up course is long, the startup stage of heat pipe, the heat collector tube element can not Operation at full power thereby heat up slow, heat collector tube element Operation at full power thereby quick heating after heat pipe starts.
The heat pipe of investigating eccentric all-glass heat pipe vacuum collector tube starts: usually rise slowly because of its temperature of the minute surface shading that is formed by getter owing to being collected in the working medium of heat pipe bottom, so that these liquid refrigerants can not participate in rapidly the two phase flow heat transfer circulation.Simultaneously, though because the temperature at inner other positions, heat pipe hot junction is high is in dry state and can not contributes to thermal-arrest within a very long time.Rely on later on the glass heat pipe tube wall heat transfer near the bottom to make gradually liquid refrigerant vaporization and circulation participate in two phase flow heat transfer, heat pipe is finished start-up course and is entered normal operating conditions.Problem is in the winter time, and the start-up course of heat pipe may continue more than two hours, and this is so that the performance of some glass heat pipe thermal-collecting tube can not be obviously good than the eccentric all-glass vacuum thermal-collecting tube of managing interior water, and the advantage of heat pipe fails to give full play to.
Glass surface is not suitable for processing stria to form larger capillary lift.
Employing arranges to have enough large-area core nets at the glass heat pipe inner surface, although can utilize capillarity to solve the long problem of heat pipe start-up course, but can make cost a larger increase, more seriously also can working medium is more, vapour pressure is too high when making air drying causes that having a big risk of bombing accident is large to be increased because inside fills.When 0.2% when for example working medium filling weight/heat pipe plot ratio is from 2 milliliters/1000 milliliters are brought up to 5 milliliters/1000 milliliters 0.5%, the highest saturated vapor pressure increases to approximately 10 atmospheric pressure of 180 ℃ from approximately 3.7 atmospheric pressure of 140 ℃, but inside heat pipe when approximately 3.7 atmospheric high-vapor-pressures continue to be warming up to 180 ℃ from 140 ℃ internal pressure only have about 4 atmospheric pressure.Because the glass voltage endurance capability is limited, so the liquid refrigerant position height start quickly in the time of should managing to raise heat pipe and start the least possiblely when heat pipe work is again held back liquid refrigerant with minimizing working medium filling weight.
The eccentric all-glass vacuum thermal-collecting tube of Chinese utility model patent 200410012193.9 explosion-proof solars has disclosed the eccentric all-glass vacuum thermal-collecting tube of a kind of explosion-proof solar, and the liquid refrigerant filling weight is 0.1～0.5%V in its heat pipe, and wherein V is the volume in the heat pipe.Off-centre all is converted into vapour phase when making it reach a certain critical-temperature, and when temperature continued to raise, pressure raise according to the rule of vapour phase, thereby has significantly reduced the operating pressure in the heat pipe under the condition of high temperature ...Simultaneously, in heat pipe, set up sorbing material, to guarantee that heat pipe quick starts again.But this utility model patent comprises that in heat pipe sorbing material sticking working medium that heat pipe evaporator section middle part arranges adds quick heating pipe and starts this mode and still can bring when increasing working medium filling weight and air drying internal pressure or start still slower problem.Suppose: originally set and be limited to 4 atmospheric pressure, 230 ℃ of air drying maximum temperatures, water on 44 millimeters of inner glass tube internal diameters, 58 millimeters of cover glass tube external diameters, long 2 meters the internal pressure of eccentric all-glass vacuum solar energy collection tube and make working medium, can be calculated approximately 3 liters of inner glass tube volumes.Look into the saturated vapor pressure table of water vapour as can be known: the working medium filling weight of eccentric all working medium vaporization just in the time of 135 ℃, its saturated vapor pressure is 3.2 atmospheric pressure and when 230 ℃ of the highest air drying temperature, internal pressure reaches 4 atmospheric pressure and namely equals the inner glass tube internal pressure limit.And the quality volumetric ratio of steam is 1.7 milliliters/liter can check in 135 ℃ the time.The working medium filling weight of this thermal-collecting tube is 1.7 milliliters/liter=5.1 milliliters of 3 liters of *.(5.1 milliliters of working medium are on the low side for existing thermal-collecting tube, can occur drying up in the bottom, hot junction, but this problem do not done expansion here).At this moment, quick heating pipe starts and imbibition material is set in the middle part of inside heat pipe in order to add.Suppose that the imbibition material that increases carries sticking altogether 1.5 milliliters of working medium have been arranged when heat pipe works, and therefore aggravate inside heat pipe hot junction dry-out, dry hot junction does not participate in heat exchange has a greatly reduced quality the efficient of thermal-collecting tube.For fear of the heat-collecting capacity loss that brings because the hot junction is dry.Must increase the working medium filling weight remedies heat pipe when work and is put forward the part working medium that sticking has by imbibition material.Suppose that the working medium filling weight that increases also is 1.5 milliliters, then working medium just the steam during eccentric all vaporizations the quality volumetric ratio from 1.7 milliliters/go up and rise to 2.2 milliliters/liter, the critical-temperature that the highest saturated vapor pressure at this moment is corresponding rises to 145 ℃ from 135 ℃; Correspondingly, when 230 ℃ of the highest air drying temperature, inside heat pipe pressure is increased to 5 atmospheric pressure from 4 atmospheric pressure.Conclusion is: increase imbibition material and increase the working medium filling weight in order to accelerate to be enabled in middle part, heat pipe hot junction, under the highest air drying temperature, the pressure of thermal-collecting tube inside can increase to 5 atmospheric pressure from 4 atmospheric pressure above original pressure of setting and exceed 25%; Be equivalent to reduce winter a day heat-collecting capacity 35% and will prolong two hours without imbibition material heat pipe start-up course.Also have, only 1.5 milliliters of working medium of sticking are still not enough for sorbing material.
Summary of the invention
The purpose of this utility model is to provide a slice capillary wick working medium high position to gather eccentric directly-heated pipe vacuum heat collecting device.
The technical scheme in the invention for solving the technical problem: make a slice capillary wick working medium high position and gather eccentric directly-heated pipe vacuum heat collecting device, comprise that a slice capillary wick working medium high position gathers eccentric directly-heated pipe vacuum heat collection element, adiabatic water tank or connection collection box, tail box, support and auxiliary.Adiabatic water tank or connection collection box gather eccentric directly-heated pipe vacuum heat collection element heat transfer with a slice capillary wick working medium high position and are connected.A slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collection element and is comprised eccentric all-glass vacuum thermal-collecting tube and the insertion type glass heat pipe that inserts its eccentric inner glass tube inner chamber, and eccentric all-glass vacuum thermal-collecting tube cooperates with the insertion type glass heat pipe that inserts its eccentric inner glass tube inner chamber or low thermal resistance is connected.The insertion type glass heat pipe is in tilted layout and relies on gravity work.The outer surface that eccentric inner glass tube is glass heat pipe is provided with absorbing film.The slice capillary wick that contains 2 to 30 millimeters of width in inside, heat pipe hot junction, slice capillary wick adopt elastic circlip to overlay in heat pipe hot junction inwall; The length of slice capillary wick is 10 to 50% of heat pipe hot end length; The lower end of slice capillary wick is 0 to 200 millimeter from the distance of heat pipe bottom.The relative cover glass tube arranged off-centre of the eccentric inner glass tube of the eccentric all-glass vacuum thermal-collecting tube of described off-centre and eccentric inner glass tube be connected with semicircle minute surface optically focused on being made in cover glass tube or, eccentric inner glass tube is connected in the additional semicircle minute surface optically focused that connects on the cover glass tube with a cooperation and is connected.
Can also make 40 ± 5 ℃ of the water temperatures in 700 ± 50 watts/square metre of sunshine exposures, the heat pipe cold junction outside, described heat collecting element axial line be that the north-south is in tilted layout and the angle of its axial line and incident sunlight in 90 ± 20 ° of scopes under the condition: the slice capillary wick is held 25% of the quality of liquid refrigerant≤its maximum liquid refrigerant volume of holding.
Can also make: the maximum liquid refrigerant volume of holding of slice capillary wick 〉=4 milliliters; 40 ± 5 ℃ of the water temperatures in 700 ± 50 watts/square metre of sunshine exposures, the heat pipe cold junction outside, described heat collecting element axial line be that the north-south is in tilted layout and the angle of its axial line and incident sunlight in 90 ± 20 ° of scopes under the condition, the slice capillary wick is held the quality of liquid refrigerant≤0.9 milliliter.
The beneficial effects of the utility model: the utility model slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collecting device, in described heat collecting element glass heat pipe inside the slice capillary wick is set, when the sun sets, the reverse work of described glass heat pipe: the evaporation of the liquid refrigerant of the former heat pipe cold junction inner surface that is connected with the heating load low thermal resistance is also condensed at former heat pipe hot junction inner surface, thereby gathers more and held back the position of having raised working medium by sticking during downward trickling arrival slice capillary wick when former heat pipe hot junction inner surface liquid refrigerant.The second day sun is out the time, and in a single day the heat pipe hot junction is heated, rapidly evaporation and participate in two phase flow heat transfer of the liquid refrigerant that is held by the slice capillary wick.The slice capillary wick is carefully grown, because long, the wide startup of the solar energy heat absorbing area that relates to is rapid; Because thin and place the bottom in heat pipe hot junction, during the heat pipe normal operation, the liquid refrigerant that the slice capillary wick is held is less for example less than 0.3 milliliter, its during to air drying the increase of internal pressure very limited.The utility model slice capillary wick working medium high position is gathered the various solar energy heat collectors that eccentric heat-tube vacuum heat collecting element is made, its heat pipe start-up time was from more than 140 minute of original light pipe, foreshorten to more than 20 minute, be equivalent to many thermal-arrests more than hour every day in winter.Thereby both having accelerated to greatest extent heat pipe starts; The pressure of glass heat pipe inside keeps low level when making air drying again.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that a slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collecting device structural representation.
1. cover glass tubes among the figure; 2. eccentric inner glass tube; 3. heat pipe; 4. slice capillary wick; 5. elastic circlip; 6. eccentric all-glass vacuum thermal-collecting tube; 7. semicircle minute surface; 8. adiabatic water tank; 9. tail box.
The specific embodiment
Fig. 1 provides embodiment of the utility model.
Among Fig. 1, gather eccentric directly-heated pipe vacuum heat collection element, adiabatic water tank 8 and slice capillary wick working medium high position of tail box 9 compositions with a slice capillary wick working medium high position and gather eccentric directly-heated pipe vacuum heat collecting device.Adiabatic water tank 8 gathers eccentric directly-heated pipe vacuum heat collection element heat transfer with a slice capillary wick working medium high position and is connected.A slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collection element and is connected with insertion type glass housing heat pipe 3 low thermal resistances that insert its eccentric inner glass tube 2 inner chambers by eccentric all-glass vacuum thermal-collecting tube 6 and makes.The length in heat pipe 3 hot junctions is 1.8 meters.The outer surface that eccentric inner glass tube 2 is heat pipe 3 is made absorbing film.Described heat collecting element is vertical or tilt to install.Heat pipe 3 relies on gravity work.Inside, heat pipe 3 hot junction arranges the slice capillary wick 4 of 2 to 30 millimeters of width, and slice capillary wick 4 usefulness elastic circlips 5 overlay in heat pipe 3 hot junction inwalls.Slice capillary wick 4 adopts glass fabric to make; Elastic circlip 5 is made for the phosphor-copper material.The length of slice capillary wick 4 is 20% of heat pipe 3 hot end lengths; The lower end of slice capillary wick 4 is from 50 millimeters of the distances of heat pipe 3 bottoms.At heat collecting element label is set, during convenient the installation slice capillary wick 4 is placed bottom the heat collecting element.Eccentric inner glass tube 2 relative cover glass tube 1 arranged off-centre and the eccentric inner glass tube 2 of eccentric all-glass vacuum thermal-collecting tube 6 are connected with semicircle minute surface 7 optically focused that are made in cover glass tube 1 inwall.Side by side outside arrow represents the cold junction position of heat pipe 3 among Fig. 1.
When the heat collecting element of Fig. 1 embodiment turned clockwise approximately 45 degree inclination installation, heat pipe 3 can rely on gravity to realize the two phase flow cycle heat exchange, and solar thermal energy is passed to heating load by cold junction continuously.During heat pipe 3 work, because slice capillary wick 4 can not held working medium, so the working medium filling weight does not increase, heat pipe 3 inner saturated vapor pressures are in low-level when being conducive to limit air drying.
When the heat collecting element of Fig. 1 embodiment turns clockwise that approximately 45 degree tilt to install, slice capillary wick 4 can be when heat pipe 3 not be worked a large amount of sticking liquid refrigerants, improve the position that former light pipe heat pipe is collected in the working medium of heat pipe 3 bottoms.When slice capillary wick 4 is conducive to heat pipe 3 and starts from 50 millimeters of heat pipe 3 bottom spacing distances from top and below absorb simultaneously solar thermal energy and accelerate startup.
Among Fig. 1 embodiment, so allow during heat pipe 3 normal operation below it dry or dry slice capillary wicks 4 of part of tens of millimeters sections when heat pipe 3 work, usually not hold working medium.When the sun set, the evaporation of the condensate water of heat pipe 3 cold junction inner surfaces comprised that the eccentric whole or most working medium of all working medium of this part working medium are by slice capillary wick 4 stickings.
Optically focused connect refer to the eccentric inner glass tube 2 of absorbing film mobile near semicircle minute surface 7 but do not contact in order to avoid form heat bridge with semicircle minute surface 7 and cause heat-energy losses from the top down along the symmetrical plane of semicircle minute surface 7 with its axial line.As seen from Figure 1: enter the sunlight of cover glass tube 1, mid portion directly changes into heat energy at the absorbing film of eccentric inner glass tube 2; The overwhelming majority in the two side portions arrives on the absorbing film through the reflection of semicircle minute surface 7 once or repeatedly and changes into heat energy.The sunlight that passes from the gap between eccentric inner glass tube 2 and the cover glass tube 1 might pass through the reflection of semicircle minute surface 7 cover glass tube 1 and escape.Gap width between eccentric inner glass tube 2 and the cover glass tube 1 is about 2 millimeters.
Claims (3)
1. a slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collecting device, comprises that a slice capillary wick working medium high position gathers eccentric directly-heated pipe vacuum heat collection element, adiabatic water tank or connection collection box, tail box, support and auxiliary; Adiabatic water tank or connection collection box gather eccentric directly-heated pipe vacuum heat collection element heat transfer with a slice capillary wick working medium high position and are connected; A slice capillary wick working medium high position is gathered eccentric directly-heated pipe vacuum heat collection element and is comprised eccentric all-glass vacuum thermal-collecting tube and the insertion type glass heat pipe that inserts its eccentric inner glass tube inner chamber, eccentric all-glass vacuum thermal-collecting tube cooperates with the insertion type glass heat pipe that inserts its eccentric inner glass tube inner chamber or low thermal resistance is connected, the insertion type glass heat pipe is in tilted layout and relies on gravity work, the outer surface that eccentric inner glass tube is glass heat pipe contains absorbing film, it is characterized in that containing in inside, heat pipe hot junction the slice capillary wick of 2 to 30 millimeters of width, the slice capillary wick adopts elastic circlip to overlay in heat pipe hot junction inwall; The length of slice capillary wick is 10 to 50% of heat pipe hot end length; The lower end of slice capillary wick is 0 to 200 millimeter from the distance of heat pipe bottom; The relative cover glass tube arranged off-centre of the eccentric inner glass tube of described eccentric all-glass vacuum thermal-collecting tube and eccentric inner glass tube be connected with semicircle minute surface optically focused on being made in cover glass tube or, eccentric inner glass tube is connected in the additional semicircle minute surface optically focused that connects on the cover glass tube with a cooperation and is connected.
2. according to heat collector claimed in claim 1, it is characterized in that 700 ± 50 watts/square metre of sunshine exposures, 40 ± 5 ℃ of the water temperatures in the heat pipe cold junction outside, described heat collecting element axial line be that the north-south is in tilted layout and the angle of its axial line and incident sunlight in 90 ± 20 ° of scopes under the condition: the slice capillary wick is held 25% of the quality of liquid refrigerant≤its maximum liquid refrigerant volume of holding.
3. according to claim 1 or 2 described heat collectors, it is characterized in that: the maximum liquid refrigerant volume of holding of slice capillary wick 〉=4 milliliters; 40 ± 5 ℃ of the water temperatures in 700 ± 50 watts/square metre of sunshine exposures, the heat pipe cold junction outside, described heat collecting element axial line be that the north-south is in tilted layout and the angle of its axial line and incident sunlight in 90 ± 20 ° of scopes under the condition, the slice capillary wick is held the quality of liquid refrigerant≤0.9 milliliter.
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| CN2013202540310U CN203240792U (en) | 2013-05-09 | 2013-05-09 | Thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device |
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| CN2013202540310U CN203240792U (en) | 2013-05-09 | 2013-05-09 | Thin-strip capillary liquid-suction core working medium high concentration eccentric direct heating pipe vacuum heat-collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI701418B (en) * | 2018-04-13 | 2020-08-11 | 奇鋐科技股份有限公司 | Heat dissipation unit connection reinforcement structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI701418B (en) * | 2018-04-13 | 2020-08-11 | 奇鋐科技股份有限公司 | Heat dissipation unit connection reinforcement structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140509 |