CN102654369A - Heat tube internally filled with phase-change liquid and solar heat-collecting tube - Google Patents

Heat tube internally filled with phase-change liquid and solar heat-collecting tube Download PDF

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Publication number
CN102654369A
CN102654369A CN2012101543237A CN201210154323A CN102654369A CN 102654369 A CN102654369 A CN 102654369A CN 2012101543237 A CN2012101543237 A CN 2012101543237A CN 201210154323 A CN201210154323 A CN 201210154323A CN 102654369 A CN102654369 A CN 102654369A
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China
Prior art keywords
heat
phase
pipe
tube
organic solvent
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CN2012101543237A
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CN102654369B (en
Inventor
侯乃升
史继富
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Shandong Haisheng Solar Energy Research Institute Co ltd
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QINGDAO HAIZHICHUAN RENEWABLE ENERGY RESEARCH INSTITUTE
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Priority to CN201210154323.7A priority Critical patent/CN102654369B/en
Publication of CN102654369A publication Critical patent/CN102654369A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

The invention relates to the field of solar heat utilization, and particularly relates to a heat tube internally filled with phase-change liquid and a solar heat-collecting tube. The invention provides the phase-change liquid formed by dispersing nano-molecular sieves in an organic solvent, solves the problem that gas in an aluminium heat tube and a steel heat tube can not be condensed by combining the phase-change liquid with the aluminium heat tube, and effectively decreases the cost of the heat tube. The phase-change liquid is filled in the heat tube disclosed by the invention, the phase-change liquid comprises an organic solvent, and a nano-molecular sieve fluid with water-absorbing capacity, wherein the nano-molecular sieve fluid with the water-absorbing capacity is uniformly dispersed in the organic solvent; and the heat tube is arranged as the aluminium heat tube. According to the heat tube and a solar heat-collecting tube, the molecular sieves are added in the phase-change liquid of the heat tube at the first time, and water in the phase-change liquid of the heat tube is absorbed by utilizing the molecular sieves, thus opening up a new research direction for research on a waterfree heat tube; additionally, the molecular sieves are nano-sized and dispersed in the phase-change liquid to form nano-fluid, thus being capable of improving the heat-transferring effect. Therefore, two advantages are realized according to the heat tube and the solar heat-collecting tube.

Description

The heat pipe of built-in phase-transition liquid and solar energy heat collection pipe
 
Technical field
The present invention relates to solar energy heat utilization field, relate in particular to a kind of heat pipe and solar energy heat collection pipe of built-in phase-transition liquid.
Background technology
Heat pipe is to realize that heat transmits fast and the ideal of exchange is selected.Heat pipe is realized efficient heat conduction, exchange through phase transformation, utilizes the evaporation of airtight cavity internal working medium, condensation phase transformation to carry out the heat transmission, and its heat-transfer capability is dozens or even hundreds of a times of traditional metal materials.The most frequently used heat pipe is copper-aqueous systems at present.Yet the price comparison of copper is expensive, selects for use the aluminium substitution copper of cheap lightweight can practice thrift cost.Yet this tubing is to its sensitivity of water electrode, and at high temperature reaction produces hydrogen with water easily, and the hydrogen of generation is assembled at condensation segment, forms on-condensible gas, makes heat pipe failure, even can blast.Adopt the generation that to avoid hydrogen on organic solvent such as the replacement water theories such as methyl alcohol, ethanol, yet industrial methanol and ethanol inevitably can contain traces of moisture, have influenced the performance of heat pipe.As the moisture that the method that adopts chemical refining is removed trace in the organic solvent will inevitably increase cost, and together in the heat pipe process of making and atmospheric isolation, avoids the suction of organic solvent secondary, and this obviously is unpractical.
In addition, with the solar energy heat collection pipe that heat pipe is processed, heat transfer efficiency is high; Thermal shock is little, reduced all the time according to the time system reverse heat waste, and the supreme heat loss of circulation line down; The purposes of this thermal-collecting tube is not limited to provide the domestic hot-water, also is used for fields such as steam turbine power generation and accumulation of energy simultaneously.Therefore hot pipe type vacuum heat collection pipe has been represented the new developing direction of heat collector.Yet hot pipe type vacuum heat collection pipe does not also obtain general promotion and application, and this mainly is the price comparison costliness of this thermal-collecting tube.Therefore, if can make thermal-collecting tube, will help reducing the cost of heat collector tube pipe with cheap aluminothermy pipe Alloy instead of Copper heat pipe.
Summary of the invention
The heat pipe of built-in phase-transition liquid of the present invention and solar energy heat collection pipe overcome above-mentioned defective; Provide nano molecular sieve has been dispersed in the phase-transition liquid in the organic solvent; And with this phase-transition liquid and aluminothermy pipe jointing, solved the problem of on-condensible gas in aluminium and the steel heat pipe, and effectively reduced the heat pipe cost.
The technical scheme of the heat pipe of built-in phase-transition liquid of the present invention is such: phase-transition liquid is set in the heat pipe, and phase-transition liquid comprises organic solvent, and the nano molecular sieve fluid with water absorbing capacity is dispersed in the organic solvent; Heat pipe is set to the aluminothermy pipe.
The diameter of nano molecular sieve is 5nm ~ 1 μ m, and the aperture is 2.5 ~ 3.5.
Organic solvent is set to alcohols, alkane, nitrile.
Organic solvent is set to methyl alcohol or ethanol.
The technical scheme of solar energy heat collection pipe of the present invention is such: it comprises outer tube and heat pipe; Phase-transition liquid is set in the heat pipe; It comprises condensation segment and evaporator section heat pipe, and phase-transition liquid comprises organic solvent, and the nano molecular sieve fluid with water absorbing capacity is dispersed in the organic solvent; Heat pipe is set to the aluminothermy pipe.
The diameter of nano molecular sieve is 5nm ~ 1 μ m, and the aperture is 2.5 ~ 3.5.
Organic solvent is set to alcohols, alkane, nitrile.
Organic solvent is set to methyl alcohol or ethanol
Shell is set to fine aluminium or aluminium alloy.
The inwall of heat pipe is provided with groove.
The operation principle of aluminothermy pipe of the present invention is such: because the molecular diameter of water is 3, ethanol select the aperture be 2.5 ~ 3.5 molecular sieve as water absorbent, realize good absorption to water.In addition, molecular screen material can absorb water during less than 350 degrees centigrade in temperature, satisfies the requirement of solar energy heat collection pipe opposite heat tube.Nano molecular sieve is dispersed in the solvent, obtains nano-fluid, nano-fluid in liquid Brownian movement and be adsorbed on the capillary wick that the nano material on the tube wall forms and all help increasing heat-transfer effect.
Nano molecular sieve fluid among the present invention is done the aluminium and the steel heat pipe of phase-transition liquid and is realized through following method:
1) is dispersed in the organic solvent the molecular sieve of activation is ultrasonic, obtains phase-transition liquid;
2) aluminum pipe or steel pipe are cleaned oven dry, adopt high speed Oil-Filled Spinning method to squeeze out capillary groove;
The aluminum pipe or the steel pipe that 3) will have a capillary groove vacuumize can phase-transition liquid, finally sealed.
Then selective heat absorbing coating is ultrasonically welded within the evaporator section that the nano molecular sieve fluid is done the heat pipe of phase-transition liquid, and carries out sealing-in with the method and the high-boron-silicon glass of hot pressing envelope.High-boron-silicon glass pipe sealed after being vacuumized just obtains heat-pipe vacuum heat collecting pipe.
The present invention adds molecular sieve in the phase-transition liquid of heat pipe first, utilizes the moisture in the molecular sieve opposite heat tube phase-transition liquid to absorb, for new research direction has been opened up in the research of anhydrous heat pipe; In addition; Molecular sieve is nano level, is dispersed in the phase-transition liquid, forms nano-fluid; Can improve heat-transfer effect, be to kill two birds with one stone.
Description of drawings
Fig. 1 is the structural representation of aluminothermy pipe of the present invention.
1-condensation segment, 2-evaporator section, 3-phase-transition liquid.
The specific embodiment
Embodiment 1:
It comprises outer tube and heat pipe solar energy heat collection pipe of the present invention, and phase-transition liquid 3 is set in the heat pipe, and it comprises condensation segment 1 and evaporator section 2 heat pipe, and phase-transition liquid 3 comprises organic solvent, and the nano molecular sieve fluid with water absorbing capacity is dispersed in the organic solvent; Heat pipe is set to the aluminothermy pipe, at first is dispersed in the organic solvent the molecular sieve of activation is ultrasonic, obtains phase-transition liquid 3; Aluminum pipe is cleaned oven dry, adopt high speed Oil-Filled Spinning method to squeeze out capillary groove; The aluminum pipe or the steel pipe that will have capillary groove vacuumize, and can phase-transition liquid, finally sealed promptly obtain solar energy heat collection pipe.The diameter of the nano molecular sieve of present embodiment is 5nm, and the aperture is 2.5.
Embodiment 2:
The difference of present embodiment and embodiment 1 is that the diameter of the nano molecular sieve of present embodiment is 1 μ m, and the aperture is set to 3.5.
Embodiment 3:
The difference of present embodiment and embodiment 1 is that the diameter of the nano molecular sieve of present embodiment is 50nm, and the aperture is set to 3.

Claims (10)

1. the heat pipe of a built-in phase-transition liquid is provided with phase-transition liquid in the heat pipe, it is characterized in that phase-transition liquid comprises organic solvent, and the nano molecular sieve fluid with water absorbing capacity is dispersed in the organic solvent; Heat pipe is set to the aluminothermy pipe.
2. the heat pipe of built-in phase-transition liquid according to claim 1, it is characterized in that: the diameter of nano molecular sieve is 5nm ~ 1 μ m, and the aperture is 2.5 ~ 3.5.
3. the heat pipe of built-in phase-transition liquid according to claim 1, it is characterized in that: organic solvent is set to alcohols, alkane, nitrile.
4. the heat pipe of built-in phase-transition liquid according to claim 2, it is characterized in that: organic solvent is set to methyl alcohol or ethanol.
5. solar energy heat collection pipe, it comprises outer tube and heat pipe, and phase-transition liquid is set in the heat pipe, and it comprises condensation segment and evaporator section heat pipe, it is characterized in that, and phase-transition liquid comprises organic solvent, and the nano molecular sieve fluid with water absorbing capacity is dispersed in the organic solvent; Heat pipe is set to the aluminothermy pipe.
6. solar energy heat collection pipe according to claim 5 is characterized in that: the diameter of nano molecular sieve is 5nm ~ 1 μ m, and the aperture is 2.5 ~ 3.5.
7. solar energy heat collection pipe according to claim 5 is characterized in that: organic solvent is set to alcohols, alkane, nitrile.
8. solar energy heat collection pipe according to claim 7 is characterized in that: organic solvent is set to methyl alcohol or ethanol.
9. solar energy heat collection pipe according to claim 5 is characterized in that: shell is set to fine aluminium or aluminium alloy.
10. solar energy heat collection pipe according to claim 5 is characterized in that: the inwall of heat pipe is provided with groove.
CN201210154323.7A 2012-05-18 2012-05-18 Heat tube internally filled with phase-change liquid and solar heat-collecting tube Expired - Fee Related CN102654369B (en)

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CN201210154323.7A CN102654369B (en) 2012-05-18 2012-05-18 Heat tube internally filled with phase-change liquid and solar heat-collecting tube

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CN102654369B CN102654369B (en) 2015-07-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613659A (en) * 2015-01-28 2015-05-13 上海交通大学 Solar energy photothermal device combined with photothermal conversion and thermotube effect

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1595039A (en) * 2003-09-13 2005-03-16 鸿富锦精密工业(深圳)有限公司 Heat pipe
JP2007315663A (en) * 2006-05-25 2007-12-06 Sanden Corp Refrigeration system
CN201672716U (en) * 2010-05-11 2010-12-15 昆明理工大学 Heat collection and heating integrated solar heat utilization device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1595039A (en) * 2003-09-13 2005-03-16 鸿富锦精密工业(深圳)有限公司 Heat pipe
JP2007315663A (en) * 2006-05-25 2007-12-06 Sanden Corp Refrigeration system
CN201672716U (en) * 2010-05-11 2010-12-15 昆明理工大学 Heat collection and heating integrated solar heat utilization device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吴东义等: "纳米分子筛/聚丙烯酰胺复合材料的制备", 《化工新型材料》, vol. 37, no. 07, 15 July 2009 (2009-07-15), pages 98 - 2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613659A (en) * 2015-01-28 2015-05-13 上海交通大学 Solar energy photothermal device combined with photothermal conversion and thermotube effect

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