CN105157460A - Pulsating heat pipe heat exchanger with ammonia water as media and stainless steel as materials - Google Patents
Pulsating heat pipe heat exchanger with ammonia water as media and stainless steel as materials Download PDFInfo
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- CN105157460A CN105157460A CN201510524080.5A CN201510524080A CN105157460A CN 105157460 A CN105157460 A CN 105157460A CN 201510524080 A CN201510524080 A CN 201510524080A CN 105157460 A CN105157460 A CN 105157460A
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- pulsating heat
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Abstract
The invention provides a pulsating heat pipe heat exchanger. The pulsating heat pipe heat exchanger is characterized in that the pulsating heat pipe heat exchanger comprises a pulsating heat pipe which is made of stainless steel materials; and the pulsating heat pipe is filled with an ammonia water solution which serves as work media. Compared with other media, the pulsating heat pipe heat exchanger with the ammonia water as the media can be fast started; and because stainless steel and ammonia water are compatible, a chemical reaction of ammonia water with copper is avoided, the temperature jump starting characteristic is avoided, and the problem that the pulsating heat pipe heat exchanger cannot be used in some occasions is solved.
Description
Technical field
What the present invention relates to is a kind of pulsating heat pipe heat exchanger utilizing ammoniacal liquor characteristic.Utilize pulsating heat pipe phase-change heat transfer and pulsation effect, the heat exchange efficiency of effective raising heat exchanger, form efficient pulsating heat pipe heat exchanger, utilize stainless steel to have the speciality such as corrosion resistance and thermal inertia simultaneously, pulsating heat pipe range of application is widened some limit fields.It is mainly used in boats and ships, automobile, space flight, electronics, waste heat recovery and the occasion such as solar energy and geothermal utilization.The features such as have heat exchange efficiency high, the pressure loss is few, less scaling, corrosion-resistant.
Background technology
In communications and transportation, Aero-Space and industrial processes, need to control between device systems and surrounding environment or between the different piece of same system or the transmission of strengthening heat.Heat exchanger is not only and is ensured one of requisite key equipment of normal productive life, simultaneously also in energy-saving and emission-reduction, serves irreplaceable effect among the secondary utilization of the energy.Pulsating heat pipe heat exchanger is in the market mainly the in the majority of material with red copper, as Cui Xiaoyu " nano-fluid oscillating heat pipe ", Yang Honghai " heat recovery device of pulsating hot pipe type air conditioner air exhausting system " etc. uses red copper as the making material of pulsating heat pipe, but the relative stainless steel of the character of red copper, perishable in the solution such as acid, alkali, and red copper pulsating heat pipe and ammonia spirit react, pulsating heat pipe was lost efficacy, so red copper be material pulsating heat pipe the filling of working medium and application in, there is certain limitation.
Pulsating heat pipe is a kind of new and effective heat-transfer equipment, mainly relies on vapour, the self-Oscillation Flows of liquid two-phase medium carrys out transferring heat during operation.Its operation principle is: fill a certain amount of working media by after being evacuated in pipe, because caliber is enough little, arranges and is the state of random distribution in pipe by forming bubble column and liquid column interval.At evaporation ends, working medium heat absorption produces bubble, undergoes rapid expansion and boosting, and promote working medium and flow to cryogenic condensation end, bubble cooling meat also breaks, pressure drop.Like this, owing to there is the pressure imbalance existed between pressure reduction and adjacent pipe between two ends, make working medium Oscillation Flows between evaporator section and condensation segment, thus realize the transmission of heat.In whole process, without the need to consuming exterior mechanical merit and electric work, be the oneself's concussion realizing working medium under thermal drivers completely.It is simple that pulsating heat pipe has structure, easy to manufacture, advantage with low cost, now successful Application in power equipment and microelectronic heat treatment.To in the research of pulsating heat pipe working media, be all utilize deionized water, ethanol, the working medium such as R134a or interpolation molecule are in working medium, so far still nobody proposes to rely on ammoniacal liquor, by changing the ratio that liquefied ammonia mixes with deionized water, improves the method for heat transfer property.
Summary of the invention
The object of the invention is using the ammoniacal liquor of different blended composition and division in a proportion as working media, by the corrosion resistant speciality of stainless steel, improve the heat transfer property of pulsating heat pipe further.
In order to achieve the above object, the invention provides a kind of pulsating heat pipe heat exchanger, it is characterized in that, comprise pulsating heat pipe, described pulsating heat pipe take stainless steel as material, is filled with ammonia spirit as working media in pulsating heat pipe.
Preferably, the volumetric concentration of described ammonia spirit is 25%-28%.
Preferably, the liquid filled ratio in described pulsating heat pipe is 55%.
The present invention utilizes ammoniacal liquor as medium, utilize the phase-state change of hydraulic fluid in pulsating heat pipe to strengthen heat exchange, enhance the heat-transfer character of pulsating heat pipe and further increase the heat transfer property of pulsating heat pipe, the liquefied ammonia of ammonia spirit and the mixing ratio of water, can determine according to actual demand.Utilize the speciality of ammonia spirit and stainless steel pipe compatibility, adopt stainless steel as the material of pulsating heat pipe, heat pipe upper end can strengthen heat exchange by free convection or forced convertion.
Liquefied ammonia commonly uses cold-producing medium as one, is very easily dissolved in the water.Find through repetition test, with deionized water, ethanol water compares as during medium, finds that ammoniacal liquor is as medium, when stainless steel is as material, pulsating heat pipe starts steadily, avoid pulsating heat pipe temperature jump type to start, decrease the probability of the high-temperature damage that heat dissipation element is suddenlyd change by pulsating heat pipe, the startup load of pulsating heat pipe reduces simultaneously, power limit increases, and increases the scope of pulsating heat pipe application.
During use, this heat pipe lower end is placed in need heat radiation components and parts among, upper end is placed in air or forced cooling device.When elbow number is abundant, heat pipe can be inverted or horizontal positioned.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is that the pulsating heat pipe heat exchanger of medium compares other media with ammoniacal liquor, starts rapidly, again because stainless steel and ammoniacal liquor compatibility, avoids the chemical reaction of ammoniacal liquor to copper, avoids temperature jump type and start feature, solve the non-serviceable problem of some occasion.
Accompanying drawing explanation
Fig. 1 is open type pulsating heat pipe heat exchanger structural representation;
Fig. 2 is closed-loop pulsating heat pipe heat exchanger structure schematic diagram.
Fig. 3 is that forced convertion starts characteristic pattern;
Fig. 4 is that free convection starts characteristic pattern;
In Fig. 1 and Fig. 2,1 is condensation segment, and 2 is adiabatic section, and 3 is evaporator section.
In Fig. 3 and Fig. 4, transverse axis is the time, and unit is s, and the longitudinal axis is the temperature that the thermocouple being welded in evaporator section records, and unit is DEG C.
Curve a is the startup indicatrix of the pulsating heat pipe heat exchanger taking deionized water as medium,
Curve b is the startup indicatrix of the pulsating heat pipe heat exchanger taking ammonia spirit as medium,
Curve c is the startup indicatrix of the pulsating heat pipe heat exchanger taking absolute ethyl alcohol as medium,
Curve d is the startup indicatrix of the pulsating heat pipe heat exchanger taking alcoholic solution as medium,
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
As shown in Figure 1, be open type pulsating heat pipe heat exchanger structural representation, described pulsating heat pipe heat exchanger, comprises 6 loop pulsating heat pipes, and described pulsating heat pipe is material with stainless steel, is filled with ammonia spirit as working media in pulsating heat pipe.Described ammonia spirit is mixed by liquefied ammonia and water.The volumetric concentration of ammonia spirit is 25%-28%, and liquid filled ratio is 55%.
Measuring above-mentioned take ammoniacal liquor as medium, stainless steel is the startup feature of the pulsating heat pipe heat exchanger of material, simultaneously and with the alcoholic solution being 25%-28% with deionized water, absolute ethyl alcohol, concentration be medium, the startup feature of the stainless steel pulsating heat pipe heat exchanger that is material as a comparison.Concrete determination step is as follows:
(1) electrical heating wire is adopted to be wrapped in evaporator section 3 to simulate the operating mode that pulsating heat pipe is in the components and parts of heat radiation, when electrical heating wire is wound around, pulsating heat pipe first wraps up in layer of glass cotton outward, uniform winding electrical heating wire again, ensure the uniformity of heat flow density, outside is wrapped up with glass fibre cotton again, finally by rubber and plastic heat-preservation cotton, Surgery therapy process is carried out to evaporator section 3, reduce heat loss), electrical heating wire and power supply, voltage-stablizer, pressure regulator and power meter (± 0.1W) are connected into heating system.Condensation segment 1 is placed in the air of free convection or forced convertion, and thermocouple is welded in the copper tube surface of condensation segment 1 and evaporator section 3 respectively, in test process, surveys the surface temperature of condensation segment and evaporator section respectively.The other end connection data Acquisition Instrument of thermocouple.
(2) first checking experiment platform before experiment, opens data collecting instrument after confirmation, carries out temperature acquisition, run 300s without under heated condition, also needs to open fan during forced convertion cooling simultaneously;
(3) after 300s, the electrical heating wire starting pre-set heating power (20W) heats evaporator section 3, and experiment needs about continuous collecting 3600s;
(4) to be evaporated section 3, stop after condensation segment 1 temperature stabilization gathering, preserve data;
(5) power is transferred to the required operating mode of experiment next time, closes heating system and carry out pressure cooling.
Experiment principle is as follows:
1) before each experiment condition carries out, need calibrate thermocouple, with definitely its accuracy;
2), after starting collection, need at least continue 1 hours, treat that stable conditions runs;
3) at least 4 hours, adjacent two operating mode intervals, are convenient to experiment and reply initial state;
4) heating power described in can be selected in 0 ~ 100W.
As shown in Figure 3 and Figure 4, in whole start-up course, pulsating heat pipe shows as slow smooth type and starts feature test result all the time; When identical heating power is as 20W, no matter be forced convertion or free convection, when ammonia spirit is as working medium, the startup of pulsating heat pipe all presents lower hot junction running temperature, in whole start-up course, present slow smooth type all the time and start feature continuously, because this result proposes on the basis of a large amount of experimental datas, being difficult to represent one by one, under 20W operating mode, starting special disease as illustrating so secondary.
Embodiment 2
As shown in Figure 2, be closed-loop pulsating heat pipe heat exchanger structure schematic diagram, described pulsating heat pipe heat exchanger, is similar to embodiment 1, and difference is that head and the tail two pulsating heat pipes are interconnected, and forms closed loop.
Claims (3)
1. a pulsating heat pipe heat exchanger, is characterized in that, comprises pulsating heat pipe, and described pulsating heat pipe is material with stainless steel, is filled with ammonia spirit as working media in pulsating heat pipe.
2. pulsating heat pipe heat exchanger as claimed in claim 1, it is characterized in that, the volumetric concentration of described ammonia spirit is 25%-28%.
3. pulsating heat pipe heat exchanger as claimed in claim 1, it is characterized in that, the liquid filled ratio in described pulsating heat pipe is 55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524080.5A CN105157460A (en) | 2015-08-24 | 2015-08-24 | Pulsating heat pipe heat exchanger with ammonia water as media and stainless steel as materials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510524080.5A CN105157460A (en) | 2015-08-24 | 2015-08-24 | Pulsating heat pipe heat exchanger with ammonia water as media and stainless steel as materials |
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| CN105157460A true CN105157460A (en) | 2015-12-16 |
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| CN201510524080.5A Pending CN105157460A (en) | 2015-08-24 | 2015-08-24 | Pulsating heat pipe heat exchanger with ammonia water as media and stainless steel as materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546117A (en) * | 2016-11-25 | 2017-03-29 | 宁波诺丁汉大学 | A kind of flat plate heat tube heat exchanger and its manufacture craft |
| CN107215880A (en) * | 2017-05-13 | 2017-09-29 | 莫家群 | - kind of the New Regenerated energy |
| CN109945703A (en) * | 2019-02-28 | 2019-06-28 | 北京建筑大学 | Phase-change microcapsule fluid pulsation heat pipe and its system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677043A (en) * | 2004-04-03 | 2005-10-05 | 鸿富锦精密工业（深圳）有限公司 | Heat tube and its preparing method |
| US20050284616A1 (en) * | 2001-08-28 | 2005-12-29 | Advanced Materials Technology Pte. Ltd. | Advanced microelectronic heat dissipation package and method for its manufacture |
| CN1884954A (en) * | 2005-06-24 | 2006-12-27 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe |
| CN102338580A (en) * | 2010-07-15 | 2012-02-01 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe processing method |
| CN102692087A (en) * | 2012-06-06 | 2012-09-26 | 长春工程学院 | Flat plate type solar thermal collector with composite pulsating heat pipe |
| CN104197760A (en) * | 2014-08-15 | 2014-12-10 | 东华大学 | Pipeline type pulse heat pipe heat exchanger |
-
2015
- 2015-08-24 CN CN201510524080.5A patent/CN105157460A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050284616A1 (en) * | 2001-08-28 | 2005-12-29 | Advanced Materials Technology Pte. Ltd. | Advanced microelectronic heat dissipation package and method for its manufacture |
| CN1677043A (en) * | 2004-04-03 | 2005-10-05 | 鸿富锦精密工业（深圳）有限公司 | Heat tube and its preparing method |
| CN1884954A (en) * | 2005-06-24 | 2006-12-27 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe |
| CN102338580A (en) * | 2010-07-15 | 2012-02-01 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe processing method |
| CN102692087A (en) * | 2012-06-06 | 2012-09-26 | 长春工程学院 | Flat plate type solar thermal collector with composite pulsating heat pipe |
| CN104197760A (en) * | 2014-08-15 | 2014-12-10 | 东华大学 | Pipeline type pulse heat pipe heat exchanger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546117A (en) * | 2016-11-25 | 2017-03-29 | 宁波诺丁汉大学 | A kind of flat plate heat tube heat exchanger and its manufacture craft |
| CN107215880A (en) * | 2017-05-13 | 2017-09-29 | 莫家群 | - kind of the New Regenerated energy |
| CN109945703A (en) * | 2019-02-28 | 2019-06-28 | 北京建筑大学 | Phase-change microcapsule fluid pulsation heat pipe and its system |
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Application publication date: 20151216 |