CN104019686A - Efficient phase change cold storage heat exchange tube - Google Patents
Efficient phase change cold storage heat exchange tube Download PDFInfo
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- CN104019686A CN104019686A CN201410247054.8A CN201410247054A CN104019686A CN 104019686 A CN104019686 A CN 104019686A CN 201410247054 A CN201410247054 A CN 201410247054A CN 104019686 A CN104019686 A CN 104019686A
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- cold
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- storage
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
An efficient phase change cold storage heat exchange tube comprises a central tube, an outer shell, a transverse annular rib, a longitudinal straight rib, phase change cold storage materials and a heat preservation layer, wherein the transverse annular rib and the longitudinal straight rib which are arranged in a perpendicular and staggered mode are welded in the space between the central tube and the outer shell, and the transverse annular rib and the longitudinal straight rib play a role of fins. A fan-shaped section formed by the central tube, the outer shell, the transverse annular rib and the longitudinal straight rib is filled with the phase change cold storage materials, the heat exchange effect is enhanced due to the arrangement of the fan-shaped section, and through the heat conduction performance of the phase change cold storage materials, cold storage power and cold release power of the cold storage heat exchange tube are greatly improved. The heat preservation layer made of polyurethane materials cover the outer shell so as to play a role in preventing the cold amount from being leaked. According to an efficient phase change cold storage heat exchange device and the corresponding phase change cold storage materials with the high heat conduction coefficient, the cold storage power and the cold release power of the cold storage heat exchange tube are greatly improved, the cold storage time and the cold release time of the cold storage heat exchange tube are short, the cold storage amount is large, the structure is simple, and use and popularization are facilitated.
Description
Technical field
The present invention relates to heat exchange equipment field, relate in particular to a kind of high temperature cooling phase-change cold-storage device for air conditioner equipment.
Background technology
Cool Storage Technology can play the effect of balancing power network load in air-conditioning system, common Cool Storage Technology refers to the electrical network low ebb time at night of utilizing, cold is stored, and air-conditioning peak hours by day, institute's cold storage capacity is discharged to meet to the technology of air-conditioning peak load needs, and for high temperature cooling air-conditioning systems such as solar airconditionings, Cool Storage Technology not only can store unnecessary cold, can also play the effect of systems stabilisation.
At patent name, be: a kind of efficient three media have phase transformation coupling storage cooling heat-exchanger, and the patent No. is CN
In the patent of invention of 102080906B, disclose a kind of efficient three media and had phase transformation coupling storage cooling heat-exchanger, it adopts the latent heat of phase change storage of low temperature solid-liquid phase change material and regulates the storage cooling heat-exchanger of the low temperature cold of liquefied gas at low temp vaporization rewarming process release, guaranteed continuation and the stability of cryogenic energy utilization system for cold, the central tube that includes circulation refrigerating medium in its structure, refrigerating medium is delivered to cold in air-conditioning system to reach refrigeration by central tube.
Yet the heat exchange property of these at present common storage cooling heat-exchangers is generally not good.On the one hand, conventional cold accumulation system is mostly ice-storage system, because the phase transition temperature of ice is low, need refrigeration unit to move at lower temperature, significantly reduced the COP coefficient (the obtainable cold of the COP coefficient unit's of referring to power consumption) of air-conditioning system, and large with circumstance of temperature difference, also strengthened loss of refrigeration capacity simultaneously.Moreover, Cold-storage using ice, as the cold-storage of cold-storage ball etc. and to release cooling rate rate slower, the cold storage capacity of unit mass or volume is little etc., and problem also has to be solved.
In the prior art, for the problems referred to above of conventional air-conditioning and high temperature cooling air-conditioning, industry generally adopts phase change cold-storage technology; The cold storage capacity of phase-change material for cold storage is large, and is applicable to cold-storage under the chilled water of higher temperature, thereby the system COP of making significantly improves.
Yet, it will be apparent to those skilled in the art that prior art, the thermal conductivity factor of phase-change material for cold storage is generally lower, cause the cold-storage of regenerator and release cooling rate rate slow, thereby affected popularization and the use of this technology.
Therefore, those skilled in the art is devoted to develop a kind of efficient phase change cold-storage heat-exchanger rig and corresponding high thermal conductivity coefficient phase-change material for cold storage, significantly to improve the cold-storage of cold-storage heat exchanger tube and to release cold power.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is a kind of efficient phase change cold-storage heat-exchanger rig of exploitation and corresponding high thermal conductivity coefficient phase-change material for cold storage, significantly improve the cold-storage of cold-storage heat exchanger tube and release cold power, so that its cold-storage is released cool time is short, cold storage capacity is large, and simple in structure, be easy to promote and use.
For achieving the above object, the invention provides a kind of efficient phase change cold-storage heat exchanger tube, this phase change cold-storage heat exchanger tube is in refrigeration during operation, can realize fast cold-storage and release coldly, and cold storage capacity is large.Concrete scheme of the present invention is as described below:
Efficient phase change cold-storage heat exchanger tube, comprises central tube, in described central tube, walks refrigerating medium; The structure further adopting has, and also comprises shell, transverse ring and longitudinally straight rib; The cylindrical shape of described shell, described transverse ring and described longitudinally straight rib are arranged between described central tube and described shell; Described transverse ring is annular plate and perpendicular to described central tube, the inner edge of described transverse ring is fixedly connected on the outer wall of described central tube, and the outer rim of described transverse ring is fixedly connected on the inwall of described shell; Described longitudinally straight rib is rectangular slab, and two opposite side of described longitudinally straight rib are fixedly connected on respectively on the outer wall of described central tube and the inwall of described shell; Described transverse ring and described longitudinally straight rib are mutually vertical and be fixedly connected with in its crossover sites.
Preferably, the outside of described shell is coated with heat-insulation layer.
Preferably, described heat-insulation layer is polyurethane material.
Purpose of design is herein, and the space between central tube and shell is welded with transverse ring and the longitudinally straight rib being vertically staggered; Transverse ring and longitudinally straight rib play the effect of fin, between the fan section being formed by central tube, shell, transverse ring and longitudinally straight rib in filling phase-change material for cold storage; Between fan section, arrange and strengthened heat transfer effect, in conjunction with phase-change material for cold storage heat conductivility, make cold-storage heat exchanger tube cold-storage and release cold power and significantly improve; In housing exterior, be coated with polyurethane material heat-insulation layer and play the effect that prevents that cold from revealing.
Preferably, comprise a plurality of described transverse rings and a plurality of described longitudinally straight rib, described each transverse ring is along the axial distribution of described central tube, and described each longitudinally straight rib is along the radial distribution of described central tube.
Preferably, in the fan annular space forming at described central tube, described shell, described transverse ring and described longitudinally straight rib, be filled with phase-change material for cold storage.
Preferably, described phase-change material for cold storage is that to take capric acid and laurate be base fluid, and first adds the congruent melting phase-change material for cold storage of oleic acid, and then it is formed to add nano composite material; In the shared weight ratio of nano composite material described in described phase-change material for cold storage, be 0.004%, described nano composite material is that particle diameter is the hydrophilic and oleophilic type titanium dioxide nanoparticle of 5～10nm.
Preferably, between described central tube, described shell, described transverse ring and described longitudinally straight rib, adopt the mode that is fixedly connected with of full weld.
Preferably, described central tube is coaxial with described shell, and the length of described central tube is greater than the length of described shell.
Preferably, the spacing of any two adjacent described transverse rings equates.
Preferably, the angle of any two adjacent described longitudinally straight ribs equates.
Purpose of design is herein, described phase-change material for cold storage is that to take capric acid, laurate be base fluid, and first add the congruent melting phase-change material for cold storage of oleic acid, and then the nano composite material that interpolation weight ratio is 0.004% is formed, described nano composite material is that particle diameter is the hydrophilic and oleophilic type titanium dioxide nanoparticle of 5～10nm, to realize cold-storage fast, release cold, in process of cool, in central tube, refrigerant temperature is lower than phase-change material freezing point, phase-change material discharges sensible heat and latent heat, by liquid state, changed into solid-stately, realize quick cold-storage effect; In releasing cold process, in central tube, refrigerant temperature is higher than phase-change material freezing point, and it is liquid that phase-change material undergoes phase transition by Solid State Transformation, and released cold quantity is realized fast quick-release cold-working and used; Transverse ring is uniform on central tube length direction, and longitudinally the intersection of straight rib and transverse ring is uniform on the circumferencial direction of transverse ring, to improve the utilization rate of phase-change material for cold storage, avoids occurring that cold-storage releases the problem of speed of cooling inequality; And can make easily a plurality of phase change cold-storage heat exchanger tubes use in groups specifically according to the requirement of system cold storage capacity, guaranteeing that cold-storage releases under the fast prerequisite of cooling rate rate, to improve its cold storage capacity.
From technique scheme, can find out, a kind of efficient phase change cold-storage heat exchanger tube of the present invention, in the sector region forming by central tube, transverse ring, shell and longitudinally straight rib, fill phase-change material for cold storage, it is fast that cold-storage is released cooling rate rate, cold storage capacity is large, and can be specifically according to the requirement of system cold storage capacity, make easily a plurality of phase change cold-storage heat exchanger tubes use in groups, improve its power, this efficient phase change cold-storage heat exchanger tube can play the effect of balancing power network load, can also effectively improve air-conditioning system stability and COP coefficient.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the longitudinal profile schematic diagram of a kind of efficient phase change cold-storage heat exchange tube structure of the present invention;
Fig. 2 is the horizontal section schematic diagram of a kind of efficient phase change cold-storage heat exchange tube structure of the present invention.
In figure, pipe centered by 1,2 be heat-insulation layer, and 3 be transverse ring, and 4 is shell, and 5 is longitudinal directly rib, 6 is phase-change material for cold storage.
The specific embodiment
Below in conjunction with drawings and Examples, a kind of efficient phase change cold-storage heat exchanger tube of the present invention is further described.
Embodiment:
As shown in Figure 1 to Figure 2, Fig. 1 is the longitudinal profile schematic diagram of a kind of efficient phase change cold-storage heat exchange tube structure of the present invention; Efficient phase change cold-storage heat exchanger tube, comprises central tube 1, in described central tube 1, walks refrigerating medium; The structure further adopting has, and also comprises shell 4, transverse ring 3 and longitudinally straight rib 5; The cylindrical shape of described shell 4, described transverse ring 3 and described longitudinally straight rib 5 are arranged between described central tube 1 and described shell 4; Described transverse ring 3 is annular plates and perpendicular to described central tube 1, the inner edge of described transverse ring 3 is fixedly connected on the outer wall of described central tube 1, and the outer rim of described transverse ring 3 is fixedly connected on the inwall of described shell 4; Described longitudinally straight rib 5 is rectangular slabs, and two opposite side of described longitudinally straight rib 5 are fixedly connected on respectively on the outer wall of described central tube 1 and the inwall of described shell 4; Described transverse ring 3 and described longitudinally straight rib 5 are mutually vertical and be fixedly connected with in its crossover sites.
In an embodiment, the outside of described shell 4 is coated with heat-insulation layer 2.
In an embodiment, described heat-insulation layer 2 is polyurethane material.
Space between central tube 1 and shell 4 is welded with transverse ring 3 and the longitudinally straight rib 5 being vertically staggered; Transverse ring 3 and longitudinally straight rib 5 play the effect of fin, between the fan section being formed by central tube 1, shell 4, transverse ring 3 and longitudinally straight rib 5 in filling phase-change material for cold storage 6; Between fan section, arrange and strengthened heat transfer effect, in conjunction with phase-change material for cold storage 6 heat conductivilitys, make cold-storage heat exchanger tube cold-storage and release cold power and significantly improve; In shell 4 outsides, be coated with polyurethane material heat-insulation layer 2 and play the effect that prevents that cold from revealing.
In an embodiment, comprise a plurality of described transverse rings 3 and a plurality of described longitudinally straight rib 5, described each transverse ring 3 is along the axial distribution of described central tube 1, described each longitudinally straight rib 5 is along the radial distribution of described central tube 1, as Fig. 2, Fig. 2 is the horizontal section schematic diagram of a kind of efficient phase change cold-storage heat exchange tube structure of the present invention.
In an embodiment, in the fan annular space forming at described central tube 1, described shell 4, described transverse ring 3 and described longitudinally straight rib 5, be filled with phase-change material for cold storage 6.
In an embodiment, described phase-change material for cold storage 6 is that to take capric acid and laurate be base fluid, and first adds the congruent melting phase-change material for cold storage of oleic acid, and then it is formed to add nano composite material.In phase-change material for cold storage, the shared weight ratio of nano composite material is 0.004%, and this nano composite material is that particle diameter is the hydrophilic and oleophilic type titanium dioxide nanoparticle of 5～10nm.
In an embodiment, between described central tube 1, described shell 4, described transverse ring 3 and described longitudinally straight rib 5, adopt the mode that is fixedly connected with of full weld.
In an embodiment, described central tube 1 is coaxial with described shell 4, and the length of described central tube 1 is greater than the length of described shell 4.
In an embodiment, the spacing of any two adjacent described transverse rings 3 equates.
In an embodiment, the angle of any two adjacent described longitudinally straight ribs 5 equates.
Described phase-change material for cold storage 6 is that to take capric acid and laurate be base fluid, and first add the congruent melting phase-change material for cold storage of oleic acid, and then interpolation nano composite material is formed, wherein the shared weight ratio of nano composite material is 0.004%, described nano composite material is that particle diameter is the hydrophilic and oleophilic type titanium dioxide nanoparticle of 10nm, to realize cold-storage fast, release cold, in process of cool, in central tube 1, refrigerant temperature is lower than phase-change material freezing point, phase-change material discharges sensible heat and latent heat, by liquid state, changed into solid-stately, realize quick cold-storage effect; In releasing cold process, in central tube 1, refrigerant temperature is higher than phase-change material freezing point, and it is liquid that phase-change material undergoes phase transition by Solid State Transformation, and released cold quantity is realized fast quick-release cold-working and used; Transverse ring 3 is uniform on central tube 1 length direction, and longitudinally straight rib 5 is uniform on the circumferencial direction of transverse ring 3 with the intersection of transverse ring 3, to improve the utilization rate of phase-change material for cold storage 6, avoids occurring that cold-storage releases the problem of speed of cooling inequality; For example, 12 ℃ of the Temperature Settings of refrigerating medium, refrigerating medium flow is 300L/h, the initial temperature of phase-change material for cold storage 66 is under the operating mode of 20 ℃, experiment shows that the average cold-storage power of this efficient phase change cold-storage heat exchanger tube is 112.7W, far above the 70W of the average cold-storage power of encapsulation ball phase-change cold-storage device under identical operating mode.
In an embodiment, can at least by 2 described phase change cold-storage heat exchanger tubes, be used in groups; Make easily a plurality of phase change cold-storage heat exchanger tubes use in groups, with guaranteeing that cold-storage releases under the fast prerequisite of cooling rate rate, improve its cold storage capacity.
A kind of efficient phase change cold-storage heat-exchanger rig of developing according to the present invention and corresponding high thermal conductivity coefficient phase-change material for cold storage 6, significantly improved the cold-storage of cold-storage heat exchanger tube and released cold power, so that its cold-storage is released cool time is short, cold storage capacity is large, and simple in structure, be easy to promote and use.
From technique scheme, can find out, a kind of efficient phase change cold-storage heat exchanger tube of the present invention, in the sector region forming by central tube 1, transverse ring 3, shell 4 and longitudinally straight rib 5, fill phase-change material for cold storage 6, it is fast that cold-storage is released cooling rate rate, cold storage capacity is large, and can be specifically according to the requirement of system cold storage capacity, make easily a plurality of phase change cold-storage heat exchanger tubes use in groups, improve its power, this efficient phase change cold-storage heat exchanger tube can play the effect of balancing power network load, can also effectively improve air-conditioning system stability and COP coefficient.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. an efficient phase change cold-storage heat exchanger tube, comprises central tube, in described central tube, walks refrigerating medium; It is characterized in that, also comprise shell, transverse ring and longitudinally straight rib; The cylindrical shape of described shell, described transverse ring and described longitudinally straight rib are arranged between described central tube and described shell; Described transverse ring is annular plate and perpendicular to described central tube, the inner edge of described transverse ring is fixedly connected on the outer wall of described central tube, and the outer rim of described transverse ring is fixedly connected on the inwall of described shell; Described longitudinally straight rib is rectangular slab, and two opposite side of described longitudinally straight rib are fixedly connected on respectively on the outer wall of described central tube and the inwall of described shell; Described transverse ring and described longitudinally straight rib are mutually vertical and be fixedly connected with in its crossover sites.
2. efficient phase change cold-storage heat exchanger tube according to claim 1, is characterized in that, the outside of described shell is coated with heat-insulation layer.
3. efficient phase change cold-storage heat exchanger tube according to claim 2, is characterized in that, described heat-insulation layer is polyurethane material.
4. efficient phase change cold-storage heat exchanger tube according to claim 1, it is characterized in that, comprise a plurality of described transverse rings and a plurality of described longitudinally straight rib, described each transverse ring is along the axial distribution of described central tube, and described each longitudinally straight rib is along the radial distribution of described central tube.
5. efficient phase change cold-storage heat exchanger tube according to claim 4, is characterized in that, in the fan annular space forming, is filled with phase-change material for cold storage at described central tube, described shell, described transverse ring and described longitudinally straight rib.
6. efficient phase change cold-storage heat exchanger tube according to claim 5, is characterized in that, described phase-change material for cold storage is that to take capric acid and laurate be base fluid, and first adds the congruent melting phase-change material for cold storage of oleic acid, and then it is formed to add nano composite material; In the shared weight ratio of nano composite material described in described phase-change material for cold storage, be 0.004%, described nano composite material is that particle diameter is the hydrophilic and oleophilic type titanium dioxide nanoparticle of 5～10nm.
7. according to the efficient phase change cold-storage heat exchanger tube described in claim 1 or 4, it is characterized in that, between described central tube, described shell, described transverse ring and described longitudinally straight rib, adopt the mode that is fixedly connected with of full weld.
8. efficient phase change cold-storage heat exchanger tube according to claim 1, is characterized in that, described central tube is coaxial with described shell, and the length of described central tube is greater than the length of described shell.
9. efficient phase change cold-storage heat exchanger tube according to claim 4, is characterized in that, the spacing of any two adjacent described transverse rings equates.
10. efficient phase change cold-storage heat exchanger tube according to claim 4, is characterized in that, the angle of any two adjacent described longitudinally straight ribs equates.
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| CN201410247054.8A CN104019686A (en) | 2014-06-05 | 2014-06-05 | Efficient phase change cold storage heat exchange tube |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296455A (en) * | 2014-10-29 | 2015-01-21 | 中国科学技术大学 | Refrigerator with double cold accumulation chambers |
| CN105115339A (en) * | 2015-09-08 | 2015-12-02 | 上海理工大学 | Quick response phase change heat accumulator |
| CN105349107A (en) * | 2015-10-13 | 2016-02-24 | 上海交通大学 | Preparation method for expandable graphite/capric acid-lauric acid-oleic acid composite phase change material |
| CN106940105A (en) * | 2017-05-09 | 2017-07-11 | 合肥天鹅制冷科技有限公司 | Phase change cold-storage and liquid cold-storage water tank |
| CN108151568A (en) * | 2017-11-21 | 2018-06-12 | 浙江大学 | A kind of combined type phase change heat accumulator |
| CN110030781A (en) * | 2019-04-16 | 2019-07-19 | 中车长江车辆有限公司 | It insulated container based on monoblock type hold-over plate and its fills cold for cooling method |
| CN110160181A (en) * | 2019-05-28 | 2019-08-23 | 国网甘肃省电力公司经济技术研究院 | Oval bend pipe cold-storage phase-change material device |
| CN113758338A (en) * | 2020-06-03 | 2021-12-07 | 浙江雪波蓝科技有限公司 | Energy storage device, cold charging and storage system, cold storage and supply system and refrigerator |
| CN115449350A (en) * | 2022-09-13 | 2022-12-09 | 中山大学 | Novel water-based sponge phase-change cold-storage composite material and effect verification method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296455A (en) * | 2014-10-29 | 2015-01-21 | 中国科学技术大学 | Refrigerator with double cold accumulation chambers |
| CN105115339A (en) * | 2015-09-08 | 2015-12-02 | 上海理工大学 | Quick response phase change heat accumulator |
| CN105349107A (en) * | 2015-10-13 | 2016-02-24 | 上海交通大学 | Preparation method for expandable graphite/capric acid-lauric acid-oleic acid composite phase change material |
| CN106940105A (en) * | 2017-05-09 | 2017-07-11 | 合肥天鹅制冷科技有限公司 | Phase change cold-storage and liquid cold-storage water tank |
| CN108151568A (en) * | 2017-11-21 | 2018-06-12 | 浙江大学 | A kind of combined type phase change heat accumulator |
| CN108151568B (en) * | 2017-11-21 | 2019-11-26 | 浙江大学 | A kind of combined type phase change heat accumulator |
| CN110030781A (en) * | 2019-04-16 | 2019-07-19 | 中车长江车辆有限公司 | It insulated container based on monoblock type hold-over plate and its fills cold for cooling method |
| CN110030781B (en) * | 2019-04-16 | 2024-04-05 | 中国国家铁路集团有限公司 | Heat preservation container based on integral cold accumulation plate and cold filling and supplying method thereof |
| CN110160181A (en) * | 2019-05-28 | 2019-08-23 | 国网甘肃省电力公司经济技术研究院 | Oval bend pipe cold-storage phase-change material device |
| CN113758338A (en) * | 2020-06-03 | 2021-12-07 | 浙江雪波蓝科技有限公司 | Energy storage device, cold charging and storage system, cold storage and supply system and refrigerator |
| CN115449350A (en) * | 2022-09-13 | 2022-12-09 | 中山大学 | Novel water-based sponge phase-change cold-storage composite material and effect verification method thereof |
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Application publication date: 20140903 |