CN102865762A - Split type multi-stage heat pipe system - Google Patents
Split type multi-stage heat pipe system Download PDFInfo
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- CN102865762A CN102865762A CN2012104106580A CN201210410658A CN102865762A CN 102865762 A CN102865762 A CN 102865762A CN 2012104106580 A CN2012104106580 A CN 2012104106580A CN 201210410658 A CN201210410658 A CN 201210410658A CN 102865762 A CN102865762 A CN 102865762A
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Abstract
The invention discloses a split type multi-stage heat pipe system which mainly comprises a first-stage heat pipe group, a second-stage heat pipe group, a third-stage heat pipe group, heat pipe units and a connection pipeline, and an N-stage heat pipe group can be formed as required. The whole split type multi-stage heat pipe system is composed of condensers, evaporators, steam channels and liquid channels. The evaporators and the condensers of the first-stage heat pipe group, the second-stage heat pipe group and the third-stage heat pipe group are respectively a group of independent circulation loop formed by the heat pipe units with the same quantity in parallel connection mode. The evaporators of the system are arranged on the lower portions of the condensers, the steam channels enable the top ends of the first-stage heat pipe group, the second-stage heat pipe group and the third-stage heat pipe group to be respectively connected with the top ends of the condensers, and the liquid channels enable the bottom ends of the first-stage heat pipe group, the second-stage heat pipe group and the third-stage heat pipe group to be respectively connected with the bottom ends of the condensers. The evaporators and the condensers of the whole system are separated. The split type multi-stage heat pipe system can achieve remote heat transfer so that the system is large in process design flexibility and good conditions are created for device scaling-up, heat energy comprehensive utilization and heat energy utilization system optimization.
Description
Technical field
The present invention relates to technical field of heat exchange, specifically, relate to a kind of novel heat pipe heat exchanging system, particularly the independent heat-pipe apparatus of a kind of many groups is put the split type multi-stage heat pipe system that forms side by side.
Background technology
Heat pipe utilizes sweat cooling exactly, so that heat pipe two ends temperature difference is very large, heat is conducted fast, because its superior heat transfer property and technical characteristic are widely used in energy-saving field.At present, heat pipe is usually used in the fields such as equipment cooling, waste heat recovery and VMC.The temperature difference that total driving temperature difference of heat exchange of heat pipe is evaporator section and condensation segment, the thermostatic characteristics of single-stage heat exchange of heat pipe internal refrigeration storage agent causes the heat pipe heat loss large, and it is the effective way that realizes reducing the heat transfer temperature difference loss and improve total heat exchange efficiency that the application changes the medium with temperature-changing characteristic at the intermediary that will have thermostatic characteristics by increasing heat pipe progression.The single-stage heat exchange of heat pipe changes multistage form into, cold-producing medium in every one-level heat pipe all is considered as constant temperature fluid, then multi-stage heat pipe can be realized the heat-exchanger rig of alternating temperature effect, and the heat exchange area of every grade of heat exchanger is identical, final exhaust temperature is close to environment temperature, thereby improves to greatest extent heat utilization rate.
Get now the multi-stage heat pipe heat-exchange system total heat exchange area (identical input) identical with the single-stage hot-pipe system and analyze, the heat-transfer capability of every one-level (number of transfer units is NTU) is identical.The progression of supposing the multi-stage heat pipe heat-exchanger rig is n, and the heat exchange area of every grade of heat exchanger is identical, its number of transfer units is NTU/ n, then the efficient of every grade of heat exchange of heat pipe is all identical, η 1=η 2=...=η n=ε/2, ε=1-exp(-NTU/n), total heat exchange efficiency of multi-stage heat pipe heat-exchanger rig is η=(n* η 1)/[1+ (n-1) * η 1].
Namely by the efficient of multi-stage heat pipe heat-exchanger rig is analyzed, can obtain:
1), as given progression n, when NTU trends towards infinity, η 1=1/2, overall heat exchange efficiency eta=n/(n+1);
2), as given NTU, when progression n trends towards infinity, overall heat exchange efficiency eta=NTU/(NTU+2);
3), as progression n, when NTU is tending towards infinity, overall heat exchange efficiency eta → 1.
Can find out that by above-mentioned analysis the single-stage heat exchange of heat pipe changes multistage form into, in the identical situation of overall heat exchange area, reduce the heat transfer temperature difference loss, improve total heat exchange efficiency.
Summary of the invention
Exactly a kind of novel heat pipe technology provided by the invention---a kind of split type multi-stage heat pipe system is total the problem that the heat transfer temperature difference loss is large and heat exchange efficiency is low when solving present heat pipe work.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A kind of split type multi-stage heat pipe system comprises heat pipe unit, radiating fin, evaporator fan, condenser fan, by one-level heat pipe heat, secondary heat pipe group and three grades of heat pipe heat that a plurality of heat pipes form, can make as required N level heat pipe heat; Whole system has many heat pipe unit assembled arrangement to consist of like this, and total row determines the progression of multi-stage heat pipe heat-exchange system, and total columns determines the number of every one-level heat pipe of multi-stage heat pipe heat-exchange system; Described every one-level heat pipe heat all is comprised of evaporimeter, condenser, steam channel and four parts of fluid passage; The evaporimeter of described every one-level heat pipe heat all consists of by identical heat pipe unit is parallel with one another respectively, the independent input output that oneself is arranged respectively, and the evaporimeter of heat pipe heat at different levels is put mutually side by side, be assembled in the same housing, be positioned at the air channel that evaporator fan forms, share an evaporator fan; The condenser of described every one-level heat pipe heat all consists of by identical heat pipe unit is parallel with one another respectively, the independent input output that oneself is arranged respectively, and the condenser of heat pipe heat at different levels is put mutually side by side, be assembled in the same housing, be positioned at the air channel that condenser fan forms, share a condenser fan; Described evaporimeter will be positioned at the below of condenser, the top that steam channel makes every one-level evaporimeter is conducted with the top of corresponding condenser, the bottom that fluid passage makes every one-level condenser is conducted with the bottom of corresponding evaporimeter, the evaporimeter of whole system and condenser are arranged apart like this, can realize remotely transferring, this just brings larger flexibility to technological design, has created good condition also for maximization, the comprehensive utilization of heat energy and the optimization of heat energy utilization system of device.
The evaporimeter of the above every one-level heat pipe heat all consists of by identical heat pipe unit is parallel with one another respectively, top and the bottom of each root heat pipe unit that is the evaporimeter of every one-level heat pipe heat used respectively one with the successively conducting of heat-conducting metal transverse tube of an external-connected port, the evaporimeter that guarantees so every one-level heat pipe heat has a common pressure reduction, makes the total amount of the refrigeration working medium of each root heat pipe unit substantially keep equal.
The condenser of the above every one-level heat pipe heat all consists of by identical heat pipe unit is parallel with one another respectively, top and the bottom of each root heat pipe unit that is the condenser of every one-level heat pipe heat used respectively one with the successively conducting of heat-conducting metal transverse tube of an external-connected port, the condenser that guarantees so every one-level heat pipe heat has a common pressure reduction, makes the total amount of the refrigeration working medium of each root heat pipe unit substantially keep equal.
The above heat pipe unit is preferably metal tube of thermal conductivity.
The flow direction of wind is reverse in the above condenser and the air channel, evaporimeter place.
The flow direction of wind is opposite in the above condenser and the air channel, evaporimeter place, also can be other fluids in its passage, but the flow direction of fluid is reverse, and perpendicular direction is parallel to plane, radiating fin place in heat pipe unit.
The above each row's radiating fin can be that the independent radiating fin that separates fully between level and the level consists of, it also can be the radiating fin of an integral body, but separating with heat insulation seam between the radiating fin of heat pipe heat at different levels, mainly is the heat-blocking action that plays between the heat pipe heat at different levels.
The refrigeration working medium that fills in every one-level of the above one-level heat pipe heat, secondary heat pipe group, three grades of heat pipe heat and N level heat pipe heat is single refrigeration working medium, different levels can be filled with different refrigeration working mediums as required, and heat pipe heat at different levels are independent of each other mutually during its work operation.
During above-described a kind of split type multi-stage heat pipe system normal operation, evaporation and condensation are carried out continuously, are divided into following link from principle: gasification, and---condensation---is returned liquid---and is gasified; Be the effect of refrigeration working medium heated fluid and the evaporation gasification of absorbing heat in the evaporimeter of heat pipe heat at different levels of whole system, formed vapours expands, steam channel through every one-level enters the condenser of heat pipe heat at different levels, refrigeration working medium is subjected to the cold fluid effect in the condenser of heat pipe heat at different levels, condensation and the liquid refrigerating working medium that forms, because Action of Gravity Field liquid refrigerating working medium is transferred back evaporimeter through the fluid passage of every one-level, the work that goes round and begins again like this; The evaporimeter of heat pipe heat at different levels like this along wind direction heat-exchange temperatures at different levels from high to low, and the fluid temperature (F.T.) of the evaporimeter of process heat pipe heat at different levels also becomes staged to reduce, the condenser of heat pipe heat at different levels along wind direction heat-exchange temperatures at different levels from low to high, and the fluid temperature (F.T.) of the condenser of process heat pipe heat at different levels also becomes staged to raise, cold-producing medium in every like this one-level heat pipe all is considered as constant temperature fluid, then multi-stage heat pipe can be realized the heat-exchanger rig of alternating temperature effect, and the heat exchange area of every grade of heat exchanger is identical, final exhaust temperature is close to environment temperature, thereby improve to greatest extent heat utilization rate, solved the low problem of the large and total heat exchange efficiency of existing heat pipe heat exchanging temperature difference loss.
The present invention compared with prior art, by making single heat pipe unit, parallel connection is a row, form evaporimeter and the condenser of one-level heat pipe heat, then steam channel couples together the top external-connected port of the external-connected port on the top of evaporimeter and condenser, fluid passage couples together the bottom external-connected port of the external-connected port of the bottom of evaporimeter and condenser, the heat pipe unit unification of every one-level heat pipe heat is vacuumized, the unified refrigeration working medium that is filled with, and evaporimeter and the condenser of device are arranged apart, can realize remotely transferring, this just brings larger flexibility to technological design, also gives the maximization of device, good condition has been created in the comprehensive utilization of heat energy and the optimization of heat energy utilization system; Intermediary with thermostatic characteristics can be changed into the effective way that the medium with temperature-changing characteristic is realized reducing the heat transfer temperature difference loss and improved total heat exchange efficiency by the design that increases heat pipe progression, not only improved the circulate heat exchange efficiency in a week of every secondary device, and realized the stability that whole system circulates, increase substantially the heat exchange efficiency of heat pipe; Because heat pipe heat at different levels are separate, therefore, wherein one group or two groups of heat pipe heat are damaged or were lost efficacy and can not affect the safe operation of whole system, and used whole system apparatus structure is simple, and environmental friendliness is adapted to two kinds of heat exchange that temperature difference fluids is arranged.
Description of drawings
Fig. 1 is the structural representation of this system.
Fig. 2 is this system integration radiation fin structure schematic diagram.
Among the figure: (1) heat pipe unit; (11) one-level heat pipe heat; (12) secondary heat pipe group; (13) three grades of heat pipe heat; (2) radiating fin; (21) heat insulation seam; (22) perforation; (31) evaporimeter of one-level heat pipe heat; (32) evaporimeter of secondary heat pipe group; The evaporimeter of (33) three grades of heat pipe heat; (41) condenser of one-level heat pipe heat; (42) condenser of secondary heat pipe group; The condenser of (43) three grades of heat pipe heat; (51) steam channel of one-level heat pipe heat; (52) steam channel of secondary heat pipe group; The steam channel of (53) three grades of heat pipe heat; (61) fluid passage of one-level heat pipe heat; (62) fluid passage of secondary heat pipe group; The fluid passage of (63) three grades of heat pipe heat; (7) evaporator fan; (8) condenser fan.
The specific embodiment
This embodiment simple structure schematic diagram as shown in Figure 1; The system and device agent structure that present embodiment relates to when realizing comprises heat pipe unit (1), one-level heat pipe heat (11), secondary heat pipe group (12), three grades of heat pipe heat (13), radiating fin (2), heat insulation seam (21), perforation (22), the evaporimeter of one-level heat pipe heat (31), the evaporimeter of secondary heat pipe group (32), the evaporimeter of three grades of heat pipe heat (33), the condenser of one-level heat pipe heat (41), the condenser of secondary heat pipe group (42), the condenser of three grades of heat pipe heat (43), the steam channel of one-level heat pipe heat (51), the steam channel of secondary heat pipe group (52), the steam channel of three grades of heat pipe heat (53), the fluid passage of one-level heat pipe heat (61), the fluid passage of secondary heat pipe group (62), the fluid passage of three grades of heat pipe heat (63), evaporator fan (7) and condenser fan (8), whole system can be made N level heat pipe heat as required;---again gasification that condensation---is returned liquid---that when this system worked, evaporation and condensation were carried out continuously, are divided into following link from principle: gasification.
1), liquid refrigerant is at the evaporimeter (31 of heat pipe heat at different levels; 32; 33) gasification of being heated in:
Hot fluid is through the evaporimeter (31 of heat pipe heat at different levels; 32; 33) behind the outer wall, the evaporimeter (31 of heat pipe heat at different levels; 32; 33) interior working media heat absorption becomes gaseous working medium by liquid refrigerant, and is full of whole evaporimeter (31; 32; 33), the steam expansion diffusion is through steam channel (51; 52; 53) to the condenser (41 of heat pipe heat at different levels; 42; 43).
2), steam is at the condenser (41 of heat pipe heat at different levels; 42; 43) condense in:
The condenser (41 of heat pipe heat at different levels; 42; 43) under the cold fluid effect, gaseous working medium is condensed to and is cooled to till the liquid state.
3), condensed hydraulic fluid is back to evaporating area:
The condenser (41 of heat pipe heat at different levels; 42; 43) interior working medium becomes drop or liquid film in cold fluid effect condensation, at the fluid passage (61 of the effects such as gravity, capillary force through every one-level; 62; 63) be back to the evaporimeter (31 of heat pipe heat at different levels; 32; 33).
4), the evaporimeter (31 of heat pipe heat at different levels; 32; 33) interior working medium is heated and is gasified:
The evaporimeter (31 of heat pipe heat at different levels; 32; 33) working medium in is heated and is gasified, moves in circles.
It is the evaporimeter (31 of the heat pipe heat at different levels of whole system; 32; 33) after the working medium (the general boiling temperature of this working medium is all lower) in the interior refrigeration working medium heated fluid effect heat pipe was absorbed heat and reached boiling point, working medium was evaporated to rapidly steam, and formed vapours expands, through the steam channel (51 of every one-level; 52; 53) enter the condenser (41 of heat pipe heat at different levels; 42; 43), the condenser (41 of heat pipe heat at different levels; 42; 43) interior refrigeration working medium is subjected to the cold fluid effect, and the cooling heat release also is condensed into liquid, because the liquid refrigerating working medium of Action of Gravity Field condensation is through the fluid passage (61 of every one-level; 62; 63) be transferred back evaporimeter (31; 32; 33), can again evaporate again; So constantly circulation, with heat from evaporimeter (31; 32; 33) pass to condenser (41; 42; 43).
The such evaporimeter (31 of the heat pipe heat at different levels of whole system; 32; 33) heated fluid effect, along wind direction heat-exchange temperatures at different levels from high to low, and the evaporimeter (31 of process heat pipe heat at different levels; 32; 33) fluid temperature (F.T.) also becomes staged to reduce the condenser (41 of heat pipe heat at different levels; 42; 43) be subjected to the cold fluid effect, along wind direction heat-exchange temperatures at different levels from low to high, and the condenser (41 of process heat pipe heat at different levels; 42; 43) fluid temperature (F.T.) also becomes staged to raise, and final exhaust temperature is close to environment temperature, thereby improves to greatest extent heat utilization rate.
Claims (8)
1. a split type multi-stage heat pipe system comprises heat pipe unit (1) and radiating fin (2); It is characterized in that, also comprise the one-level heat pipe heat (11), secondary heat pipe group (12) and the three grades of heat pipe heat (13) that are formed by many heat pipe unit, can make as required N level heat pipe heat; Described every one-level heat pipe heat (11; 12; 13) all by evaporimeter (31; 32; 33), condenser (41; 42; 43), steam channel (51; 52; 53) and fluid passage (61; 62; 63) four parts form; Described every one-level heat pipe heat (11; 12; 13) evaporimeter (31; 32; 33) all consist of by identical heat pipe unit is parallel with one another respectively, the independent input output of oneself is arranged respectively, and heat pipe heat at different levels (11; 12; 13) evaporimeter (31; 32; 33) mutually put side by side, be assembled in the same housing, be positioned at the air channel that evaporator fan (7) forms, share an evaporator fan (7); Described every one-level heat pipe heat (11; 12; 13) condenser (41; 42; 43) all consist of by identical heat pipe unit is parallel with one another respectively, the independent input output of oneself is arranged respectively, and heat pipe heat at different levels (11; 12; 13) condenser (41; 42; 43) mutually put side by side, be assembled in the same housing, be positioned at the air channel that condenser fan (8) forms, share a condenser fan (8); Described evaporimeter (31; 32; 33) to be positioned at condenser (41; 42; 43) below, steam channel (51; 52; 53) make every one-level evaporimeter (31; 32; 33) top and corresponding condenser (41; 42; 43) top is conducted, fluid passage (61; 62; 63) make every one-level condenser (41; 42; 43) bottom and corresponding evaporimeter (31; 32; 33) bottom is conducted; The evaporimeter of whole system and condenser are arranged apart like this, and it is connected by steam channel and fluid passage, can realize remotely transferring.
2. a kind of split type multi-stage heat pipe according to claim 1 system is characterized in that described every one-level heat pipe heat (11; 12; 13) evaporimeter (31; 32; 33) all consist of by identical heat pipe unit is parallel with one another respectively, i.e. every one-level heat pipe heat (11; 12; 13) evaporimeter (31; 32; The top of each root heat pipe unit 33) and bottom are used respectively one with the successively conducting of heat-conducting metal transverse tube of an external-connected port, guarantee so every one-level heat pipe heat (11; 12; 13) evaporimeter (31; 32; 33) a common pressure reduction is arranged, make the total amount of the refrigeration working medium of each root heat pipe unit substantially keep equal.
3. a kind of split type multi-stage heat pipe according to claim 1 system is characterized in that described every one-level heat pipe heat (11; 12; 13) condenser (41; 42; 43) all consist of by identical heat pipe unit is parallel with one another respectively, i.e. every one-level heat pipe heat (11; 12; 13) condenser (41; 42; The top of each root heat pipe unit 43) and bottom are used respectively one with the successively conducting of heat-conducting metal transverse tube of an external-connected port, guarantee so every one-level heat pipe heat (11; 12; 13) condenser (41; 42; 43) a common pressure reduction is arranged, make the total amount of the refrigeration working medium of each root heat pipe unit substantially keep equal.
4. a kind of split type multi-stage heat pipe according to claim 1 system is characterized in that described heat pipe unit (1) is preferably metal tube of thermal conductivity.
5. a kind of split type multi-stage heat pipe according to claim 1 system is characterized in that described condenser (41; 42; 43) and evaporimeter (31; 32; 33) flow direction of wind is reverse in the air channel, place.
6. a kind of split type multi-stage heat pipe according to claim 5 system is characterized in that described condenser (41; 42; 43) and evaporimeter (31; 32; 33) flow direction of wind is opposite in the air channel, place, also can be other fluids in its passage, but the flow direction of fluid is reverse, and perpendicular direction is parallel to plane, radiating fin place in heat pipe unit.
7. a kind of split type multi-stage heat pipe according to claim 1 system, it is characterized in that, described each row's radiating fin (2) can be that the independent radiating fin that separates fully between level and the level consists of, it also can be the radiating fin of an integral body, but separating with heat insulation seam (21) between the radiating fin of heat pipe heat at different levels, mainly is the heat-blocking action that plays between the heat pipe heat at different levels.
8. a kind of split type multi-stage heat pipe according to claim 1 system, it is characterized in that, the refrigeration working medium that fills in every one-level of described one-level heat pipe heat (11), secondary heat pipe group (12), three grades of heat pipe heat (13) and N level heat pipe heat is single refrigeration working medium, different levels can be filled with different refrigeration working mediums as required, and heat pipe heat at different levels are independent of each other mutually during its work operation.
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| CN2012104106580A CN102865762A (en) | 2012-10-25 | 2012-10-25 | Split type multi-stage heat pipe system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697372A (en) * | 2015-03-25 | 2015-06-10 | 北京德能恒信科技有限公司 | Separating type efficient heat pipe exchanger |
| CN108267037A (en) * | 2018-03-08 | 2018-07-10 | 广州华钻电子科技有限公司 | A kind of loop soaking plate of multiple-limb condensation heat pipe |
| CN110822958A (en) * | 2019-10-17 | 2020-02-21 | 山东科技大学 | Long-distance separated heat pipe heat exchange system |
| CN113758324A (en) * | 2020-06-03 | 2021-12-07 | Abb瑞士股份有限公司 | Loop type heat pipe for low-voltage driver |
| WO2024031318A1 (en) * | 2022-08-09 | 2024-02-15 | 浙江大学 | Stepped natural-convection condenser |
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| JPS6080089A (en) * | 1983-10-07 | 1985-05-07 | Furukawa Electric Co Ltd:The | Controlling method of heat exchanging amount in multi-stage system separate type heat exchanger |
| JPS62131199A (en) * | 1985-12-02 | 1987-06-13 | Fujikura Ltd | Air preheater using separate type heat pipe |
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| CN202915780U (en) * | 2012-10-25 | 2013-05-01 | 北京德能恒信科技有限公司 | Split type multi-level heat pipe system |
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| JPS602890A (en) * | 1983-06-21 | 1985-01-09 | Babcock Hitachi Kk | Separated type heat exchanging device |
| JPS6080089A (en) * | 1983-10-07 | 1985-05-07 | Furukawa Electric Co Ltd:The | Controlling method of heat exchanging amount in multi-stage system separate type heat exchanger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697372A (en) * | 2015-03-25 | 2015-06-10 | 北京德能恒信科技有限公司 | Separating type efficient heat pipe exchanger |
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| CN110822958A (en) * | 2019-10-17 | 2020-02-21 | 山东科技大学 | Long-distance separated heat pipe heat exchange system |
| WO2021072965A1 (en) * | 2019-10-17 | 2021-04-22 | 山东科技大学 | Long-distance separation type heat pipe heat exchange system |
| CN113758324A (en) * | 2020-06-03 | 2021-12-07 | Abb瑞士股份有限公司 | Loop type heat pipe for low-voltage driver |
| WO2024031318A1 (en) * | 2022-08-09 | 2024-02-15 | 浙江大学 | Stepped natural-convection condenser |
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Application publication date: 20130109 |