CN105241094A - Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector - Google Patents
Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector Download PDFInfo
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- CN105241094A CN105241094A CN201510615573.XA CN201510615573A CN105241094A CN 105241094 A CN105241094 A CN 105241094A CN 201510615573 A CN201510615573 A CN 201510615573A CN 105241094 A CN105241094 A CN 105241094A
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- cavity
- slide head
- cuplike
- cuplike cavity
- heat exchanger
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a solar autoexcitation oscillation enhancing heat exchanging device. The solar autoexcitation oscillation enhancing heat exchanging device is characterized by comprising a cuppy cavity with an opening formed in one end; a sliding head is arranged in the cuppy cavity; the sliding head is in water-stop with the cuppy cavity; a low-thermal capacity liquid heat-conducting medium and an air bag are contained in one side of the sliding head of the cuppy cavity; elastic clamping pillars and a spring are arranged in the other side of the sliding head of the cuppy cavity, and the elastic clamping pillars and the spring are matched with the sliding head; the spring is ejected between the sliding head and an opening part of the cuppy cavity. The invention further discloses a solar thermal collector. The solar thermal collector comprises row tubes and a lower collecting tube communicated with the row tubes. The solar thermal collector is characterized in that the autoexcitation oscillation enhancing heat exchanging device is arranged on the lower portion of each row tube and is located on the lower collecting tube.
Description
Technical field
The present invention relates to a kind of self-excited oscillation reinforced heat exchanger, relate generally to the enhanced heat exchange of flat-plate solar collector.
Background technology
As everyone knows, solar water heater is the device utilizing the energy of the sun water to be heated to high-temperature from low temperature, is widely used, and mainly contains solar vacuum-tube water heater and flat plate solar water heater at present, in China, vacuum tube type solar energy water heater obtains large-scale application.In recent years, along with the requirement of Urbanization Progress and architecture-integral, flat plate solar water heater obtains the development of advancing by leaps and bounds, and is the significant components of whole system as flat plate collector of paramount importance in flat plate solar water heater, and its performance directly determines the heat absorption capacity of system.
Current flat plate solar water heater is mainly divided into Natural Circulation and forced circulation two kinds, and wherein Natural Circulation flat plate solar water heater uses more.Forced circulation system drives the medium circulation in whole system to flow by pump according to temperature requirement, its heat transfer effect is better and controlled, and natural cycle system utilizes thermosiphon principle self-driven, its heat transfer effect is weaker than forced circulation system, therefore develops a kind of device that can strengthen natural cycle system heat transfer effect most important for the efficiency improving Natural Circulation flat plate solar water heater.
Based on above reason, the present invention by installing a device in flat plate collector, and this device has self-energizing function of being heated, and strengthened the disturbance of medium in heat collector passage, and then strengthen its exchange capability of heat by the excitation of this device.
Summary of the invention
The present invention is directed to flat-plate solar collector and design a kind of device, for strengthening the heat exchange efficiency of system.
The invention provides a kind of solar energy self-excited oscillation reinforced heat exchanger, it is characterized in that it comprises the cuplike cavity of one end open, in cuplike cavity, be provided with slide head, water-stop between slide head and cuplike cavity; Slide head side is positioned at built with low heat capacity liquid thermal conductivity media and air bag in cuplike cavity; In cuplike cavity, be positioned at slide head opposite side be provided with the elasticity card column and spring that coordinate with slide head, spring top is held between slide head and cuplike cavity opening portion.
The concrete feature of this programme also has, and described cuplike cavity is metallic cavity;
Cuplike cavity external diameter is 0.25-0.5 with the ratio of comb internal diameter, and air bag volume is 0.2-0.5 with the ratio of cuplike cavity cavity volume.
Described air bag is that polymeric material is made; Air sac sealing inner sealing has compressed gas; Gaseous species is the inert gas such as nitrogen or argon gas.
Described slide head is metal material.
Described elasticity card column embeds cuplike cavity inwall, and elasticity card column is along the uniform 3-5 of cuplike cavity inwall circumferencial direction, flexible, can limit slippage head within the scope of certain pressure, and elasticity card column is generally along the uniform 3-5 of cuplike cavity inwall circumferencial direction.
Be provided with the in-flanges of fixing spring in cuplike cavity opening portion, restraining spring ejects, and spring has the effect of limit slippage head.
The present invention also provides a kind of solar thermal collector, the lower collector pipe that it comprises comb and is communicated with comb, it is characterized in that in every root comb bottom and be positioned at above lower collector pipe being provided with self-excited oscillation reinforced heat exchanger, self-excited oscillation reinforced heat exchanger comprises the cuplike cavity of one end open, slide head is provided with, water-stop between slide head and cuplike cavity in cuplike cavity; Slide head side is positioned at built with low heat capacity liquid thermal conductivity media and air bag in cuplike cavity; In cuplike cavity, be positioned at slide head opposite side be provided with the elasticity card column and spring that coordinate with slide head, spring top is held between slide head and cuplike cavity opening portion.
Heat-conducting medium in heat collector is generally ethylene glycol or aqueous solution of propylene glycol, and around cuplike cavity inner chamber air bag, filling heat-conducting medium is then ethylene glycol or propane diols.
In the present invention, described self-excited oscillation reinforced heat exchanger outer wall welds with flat-plate solar collector comb inwall heat-absorbent surface, device cavity hatch direction is upwards axially consistent with comb, as shown in Figure 2, described self-excited oscillation reinforced heat exchanger is placed in the bottom of flat-plate solar collector comb, the top of lower collector pipe.When solar irradiation is mapped to heat collector surface time, heat-conducting medium heating temperature in the described autoexcitation reinforced heat exchanger of comb inwall and comb raises, low heat capacity liquid thermal conductivity media temperature subsequently in cuplike cavity and air bag crack also raises, and then the air-inflated pressure in the air bag of described self-excited oscillation reinforced heat exchanger enclosed inside increases, rising air bag and low heat capacity liquid thermal conductivity media when pressure reaches certain height along with temperature promote described slide head and break through elasticity card column, elasticity card column is pushed into cavity inner wall, slide head slides to rapidly the top of described self-excited oscillation reinforced heat exchanger, heat-conducting medium bottom described slide head promotion comb is rapidly along comb upwards disturbance, under the double action that this disturbance and medium reduce by heat density, heat-conducting medium in comb leaves bottom comb and upwards flows, flow through upper header finally to enter in the chuck of water tank along media outlet tube runs, the high temperature heat conducting medium entering water tank transfers heat to cold water in water tank and temperature reduces, heat-conducting medium density after cooling increases sinks, heat collector is flow back into along the media outlet on water tank, the position of the self-excited oscillation reinforced heat exchanger bottom comb is got back to through the lower collector pipe of heat collector, these cryogenic medias cool described self-excited oscillation reinforced heat exchanger, the gas in air bag is made to return to initial state by cold events, so complete a circulation.In this cyclic process, described self-excited oscillation reinforced heat exchanger produces the perturbation action of a reciprocation cycle to the heat-conducting medium in whole solar water heater system, greatly strengthen its heat transfer effect.
Beneficial effect of the present invention can be learnt according to describing of such scheme, it is a kind of device that can be carried out disturbance by self-excited oscillation to heat-conducting medium in solar thermal collector, by this disturbance and then the heat transfer effect enhancing heat-conducting medium, the advantage of this programme is as follows: (1) described self-excited oscillation device without the need to power, by photo-thermal Direct driver.(2) described self-excited oscillation device volume is little, lightweight, easy to install, can not produce other impact on system.(3) described self-excited oscillation device produces the wave of oscillation, and the wave of oscillation brings continuous disturbance can to intrasystem heat-conducting medium, and the disturbance of heat-conducting medium can improve the coefficient of heat transfer in medium and place runner.(4) described self-excited oscillation device makes the response time of whole solar water heating system to solar radiation shorter, relies on more merely the faster of the system heat of heat transfer free convection.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 self-excited oscillation reinforced heat exchanger structural representation; Fig. 2 self-excited oscillation reinforced heat exchanger course of work schematic diagram.
In figure, 1-cuplike cavity; 2-air bag; 3-slide head; 4-elasticity card column; 5-spring; 6-low heat capacity liquid thermal conductivity media; 7-nitrogen; 8-self-excited oscillation reinforced heat exchanger; 9-comb; 10-upper header; 11-lower collector pipe; 12-heat-conducting medium; 13-water tank medium inlet; 14-water tank media outlet; 15-water tank; 16-water; 17-heat collector.
Detailed description of the invention
Embodiment 1: as shown in Figure 1, a kind of solar energy self-excited oscillation reinforced heat exchanger, it comprises the cuplike cavity 1 of one end open, is provided with slide head 3 in cuplike cavity 1, water-stop between slide head 3 and cuplike cavity 1; Slide head 3 side is positioned at built with low heat capacity liquid thermal conductivity media 6 and air bag 2 in cuplike cavity 1; In cuplike cavity 1, be positioned at slide head 3 opposite side be provided with the elasticity card column 4 and spring 5 that coordinate with slide head 3, spring 5 holds between slide head 3 and cuplike cavity 1 opening portion.
Described cuplike cavity 1 is metallic cavity; Cuplike cavity 1 external diameter is 0.25-0.5 with the ratio of comb 9 internal diameter, and air bag 2 volume is 0.2-0.5 with the ratio of cuplike cavity 1 cavity volume.
Described air bag 2 is made for polymeric material; Air bag 2 sealed inside sealing gas; Gas pressure is normal pressure; Gaseous species is the inert gas such as nitrogen or argon gas.
Described slide head 3 is metal material; Described elasticity card column 4 embeds cuplike cavity 1 inwall, and elasticity card column 4 is along the uniform 3-5 of cuplike cavity 1 inwall circumferencial direction, flexible, can limit slippage 3 within the scope of certain pressure; Be provided with the in-flanges of fixing spring 5 in cuplike cavity 1 opening portion, restraining spring 5 ejects, and spring 5 has the effect of limit slippage 3.
Embodiment 2: the present embodiment and embodiment 1 something in common repeat no more, difference is, as shown in Figure 2, the present invention also provides a kind of solar thermal collector, the lower collector pipe 11 that it comprises comb 9 and is communicated with comb 9, be positioned at above lower collector pipe 11 be provided with self-excited oscillation reinforced heat exchanger 8 in every root comb 9 bottom, self-excited oscillation reinforced heat exchanger 8 comprises the cuplike cavity 1 of one end open, slide head 3 is provided with, water-stop between slide head 3 and cuplike cavity 1 in cuplike cavity 1; Slide head 3 side is positioned at built with low heat capacity liquid thermal conductivity media 6 and air bag 2 in cuplike cavity 1; In cuplike cavity 1, be positioned at slide head 3 opposite side be provided with the elasticity card column 4 and spring 5 that coordinate with slide head 3, spring 5 holds between slide head 3 and cuplike cavity 1 opening portion.
Heat-conducting medium in heat collector is generally ethylene glycol or aqueous solution of propylene glycol, and the low heat capacity liquid thermal conductivity media of cuplike cavity inner chamber is then ethylene glycol or propane diols.
Shown in Fig. 2, solar energy is irradiated on heat collector, self-excited oscillation reinforced heat exchanger 8 is heated, air bag 2 expanded by heating in self-excited oscillation reinforced heat exchanger 8, along with continuation heating, time the pressure that air bag 2 expansion produces reaches the power that can overcome device elasticity card column 4, elasticity card column 4 can be advanced cavity inner wall by slide head 3 gradually, now slide head 3 can be broken through elasticity card column 4 and moves up, be pushed to and to a certain degree will be limited by the spring 5 in device, the movement of slide head 3 can make to produce a shock wave in heat-conducting medium, shock wave can strengthen the disturbance of heat-conducting medium, upper header 10 is entered after heat-conducting medium in each comb 9 is heated, water tank medium inlet 13 is entered along upper header 10, the thermal medium entering water tank 15 passes to heat in the water in water tank 15, after medium temperature reduces, density raises the lower collector pipe 11 entering heat collector through water tank media outlet 14, enter into bottom each comb 9 along lower collector pipe 11, cold medium cooling self-excited oscillation reinforced heat exchanger 8, cool the air bag 2 in self-excited oscillation reinforced heat exchanger simultaneously, air bag 2 pressure reduces, spring 5 promotes slide head 3 and sets back, now elasticity card column 4 returns to again original position limit slippage 3, and so forth, the generation perturbation wave that self-excited oscillation reinforced heat exchanger 8 can go round and begin again, this perturbation wave can aggravate the disturbance of heat-conducting medium and then strengthen heat exchange.
Select the flat plate solar water heater that two covers are same, solar heat-collection plate is of a size of 2.4 meters × 0.8 meter, water tank is 120 liters, wherein the comb of a heat collector is built with self-excited oscillation reinforced heat exchanger of the present invention, test two cover flat plate solar water heaters in July, follow-on test 7 days four days is wherein that whole day is sunny, within three days, be that half a day is sunny, all the other times are cloudy.Test finds, in four whole day fine days, illumination condition is better, the water temperature programming rate that be provided with the water-heater water tank of device of the present invention in the morning 7 o'clock to 9 o'clock is identical with the water temperature programming rate of the water-heater water tank not installing described device, within 9 o'clock to 15 o'clock, the former water temperature programming rate is greater than the latter, when 15, the former water tank water temperature reaches whole day peak, now the latter's 3-5 degree lower than the former water temperature, when 15 o'clock to 17 o'clock, the former no longer raises water tank water temperature, the latter's water temperature continues to raise, final the latter's water temperature 1-3 degree lower than the former water temperature.In its excess-three sky, water temperature in water-heater water tank that self-excited oscillation rifle of the present invention changes heat-exchanger rig is installed and can absorbs the temperature that more heat reaches higher in the short period of time, test result display in three days, the water-heater water tank water temperature of erecting device is than the water temperature height 5-8 degree do not installed.
In sum, the heat-exchanging state that self-excited oscillation reinforced heat exchanger of the present invention significantly can improve heat transfer free convection is installed, by substantially increasing its coefficient of heat transfer to the disturbance of heat-conducting medium in solar water heating system, improve the heat absorption efficiency of system, especially can promote the heat absorption capacity of water heater when deficiency of time at sunshine.
Claims (10)
1. a solar energy self-excited oscillation reinforced heat exchanger, is characterized in that it comprises the cuplike cavity of one end open, in cuplike cavity, is provided with slide head, water-stop between slide head and cuplike cavity; Slide head side is positioned at built with low heat capacity liquid thermal conductivity media and air bag in cuplike cavity; In cuplike cavity, be positioned at slide head opposite side be provided with the elasticity card column and spring that coordinate with slide head, spring top is held between slide head and cuplike cavity opening portion.
2. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, is characterized in that described cuplike cavity is metallic cavity.
3. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, it is characterized in that cuplike cavity external diameter is 0.25-0.5 with the ratio of comb internal diameter, air bag volume is 0.2-0.5 with the ratio of cuplike cavity cavity volume.
4. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, is characterized in that described air bag is that polymeric material is made; Air sac sealing inner sealing has compressed gas; Gaseous species is nitrogen or argon gas.
5. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, is characterized in that described slide head is metal material.
6. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, it is characterized in that described elasticity card column embeds cuplike cavity inwall, elasticity card column is along the uniform 3-5 of cuplike cavity inwall circumferencial direction.
7. solar energy self-excited oscillation reinforced heat exchanger according to claim 1, is characterized in that the in-flanges being provided with fixing spring in cuplike cavity opening portion.
8. a solar thermal collector, the lower collector pipe that it comprises comb and is communicated with comb, it is characterized in that in every root comb bottom and be positioned at above lower collector pipe being provided with self-excited oscillation reinforced heat exchanger, self-excited oscillation reinforced heat exchanger comprises the cuplike cavity of one end open, slide head is provided with, water-stop between slide head and cuplike cavity in cuplike cavity; Slide head side is positioned at built with low heat capacity liquid thermal conductivity media and air bag in cuplike cavity; In cuplike cavity, be positioned at slide head opposite side be provided with the elasticity card column and spring that coordinate with slide head, spring top is held between slide head and cuplike cavity opening portion.
9. solar thermal collector according to claim 8, it is characterized in that cuplike cavity external diameter is 0.25-0.5 with the ratio of comb internal diameter, air bag volume is 0.2-0.5 with the ratio of cuplike cavity cavity volume.
10. solar thermal collector according to claim 8, is characterized in that described air bag is that polymeric material is made; Air sac sealing inner sealing has compressed gas; Gaseous species is nitrogen or argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615573.XA CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615573.XA CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
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| Publication Number | Publication Date |
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| CN105241094A true CN105241094A (en) | 2016-01-13 |
| CN105241094B CN105241094B (en) | 2017-03-22 |
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| CN201510615573.XA Active CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308856A (en) * | 1978-05-25 | 1982-01-05 | S.A. Lipsudest | Protection against the freezing of solar collectors |
| CN201196514Y (en) * | 2007-12-28 | 2009-02-18 | 中国航天科技集团公司第五研究院第五一〇研究所 | Cool end heat exchanger of pulse tube refrigerator |
| CN201373603Y (en) * | 2009-02-25 | 2009-12-30 | 张培洲 | Solar collecting, transmitting and storing system |
| CN203349541U (en) * | 2013-06-12 | 2013-12-18 | 威海澳华新能源有限公司 | Split-type solar water heater with U-shaped pipe heat collector and built-in snakelike enamel heat exchanger |
| CN204285854U (en) * | 2014-12-01 | 2015-04-22 | 南京工业大学 | Oscillating heat pipe formula vacuum tube solar heating element |
-
2015
- 2015-09-24 CN CN201510615573.XA patent/CN105241094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308856A (en) * | 1978-05-25 | 1982-01-05 | S.A. Lipsudest | Protection against the freezing of solar collectors |
| CN201196514Y (en) * | 2007-12-28 | 2009-02-18 | 中国航天科技集团公司第五研究院第五一〇研究所 | Cool end heat exchanger of pulse tube refrigerator |
| CN201373603Y (en) * | 2009-02-25 | 2009-12-30 | 张培洲 | Solar collecting, transmitting and storing system |
| CN203349541U (en) * | 2013-06-12 | 2013-12-18 | 威海澳华新能源有限公司 | Split-type solar water heater with U-shaped pipe heat collector and built-in snakelike enamel heat exchanger |
| CN204285854U (en) * | 2014-12-01 | 2015-04-22 | 南京工业大学 | Oscillating heat pipe formula vacuum tube solar heating element |
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| CN105241094B (en) | 2017-03-22 |
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Effective date of registration: 20210126 Address after: 250101 room 2118, building 1, Shangri La, West Convention and Exhibition Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Kaifu new energy Co.,Ltd. Address before: No. 19, ASTRI Road, Lixia District, Shandong, Ji'nan Patentee before: SHANDONG ANNAJI ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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