CN102788524A - Multistage power heat pipe system - Google Patents
Multistage power heat pipe system Download PDFInfo
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- CN102788524A CN102788524A CN2012103193882A CN201210319388A CN102788524A CN 102788524 A CN102788524 A CN 102788524A CN 2012103193882 A CN2012103193882 A CN 2012103193882A CN 201210319388 A CN201210319388 A CN 201210319388A CN 102788524 A CN102788524 A CN 102788524A
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Abstract
The invention discloses a multistage power heat pipe system which is mainly composed of a first stage power heat pipe unit, a second stage power heat pipe unit, a third stage power heat pipe unit, an evaporator fan, a condenser fan, a heat exchanger and a circuit control element which can be manufactured into a 4-N stage power heat pipe. Each stage of power heat pipe unit is an independent circulation loop, all evaporators are arranged side by side and assembled in an air flue of a same casing and share one evaporator fan, and all condensers are arranged side by side and assembled in the air flue of the same casing and share one condenser fan. Therefore, the multistage power heat pipe system is formed, and refrigerating fluid in each stage of the heat pipe is regarded as constant temperature fluid, so that the multistage heat pipe can achieve the effect of alternating temperature. Heat exchange areas of each stage of the heat exchanger are same, and final discharge temperature is close to ambient temperature, so that heat using ratio is improved to the maximum limit, and problems that the existing heat pipe heat exchange temperature difference is big in loss and low in total heat exchange efficiency.
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, the multistage power hot-pipe system that particularly a kind of a plurality of independent power heat-pipe apparatus are formed in parallel.
Background technology
In information machine room, the base station class building, the caloric value of indoor equipment is very big, reaches 200 ~ 1000W/ m
2And the annual 8760h operation of indoor IT equipment, therefore in most cases needing cooling the whole year, its air conditioning energy consumption is very big, often accounts for 40% ~ 50% of information machine room, the whole energy consumption in base station.The tradition air conditioner in machine room adopts compressor cooling mode whole year operation, and in fact when winter or transition season outdoor temperature are lower than indoor temperature, can utilize fully outdoor Cryogenic air as low-temperature receiver to indoor cooling, and do not need compressor.Heat exchange of heat pipe is exactly that a kind of temperature difference of utilizing drives the equipment that the cold-producing medium circulation realizes the heat transmission; Because it does not need compressor; Can rely on the evaporation and the condensation process of cold-producing medium to transmit heat; Have superior heat conductivity and isothermal characteristics, be widely used in fields such as space flight and aviation, air-conditioning, chemical industry, oil refining.Heat exchange of heat pipe is applied in the letter that has only sensible heat transfer
In the breath machine room, can reduce the running time of compression-type refrigeration air-conditioning in a large number, its annual fractional energy savings can reach 50%.
The number of patent application of applicant's previous application be 201210247844.7,201210254213.8,201210257903.9,201210259692.2 and the patent of 201210279193.X provided the gas-liquid separation that exists when solving the work of current driving force heat pipe not thoroughly and several kinds of single-stage heat pipe structures of the not enough problem of circulation power; The exhaust temperature of exhaust outlet is very high, and heat loss is still very big.
Total driving temperature difference of heat exchange of heat pipe is an indoor/outdoor temperature-difference; The thermostatic characteristics of single-stage heat exchange of heat pipe internal refrigeration storage agent causes the heat pipe heat loss big; On the application basis in front, can to change the media with alternating temperature characteristic into be the effective way that realizes reducing the heat transfer temperature difference loss and improve total heat exchange efficiency through increasing intermediary that heat pipe progression will have thermostatic characteristics.The single-stage heat exchange of heat pipe changes multistage form into; Cold-producing medium in each grade heat pipe all is regarded 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, and final exhaust temperature approaches environment temperature, thereby improves the heat energy utilization rate to greatest extent.
Get the multistage power heat pipe heat exchanging system total heat exchange area (identical input) identical with single-stage power hot-pipe system now and analyze, evaporimeter is identical with the heat-transfer capability (number of transfer units is NTU) of condenser.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, and its number of transfer units is NTU/ n, and then the efficient of every grade of heat exchange of heat pipe is all identical, η
1=η
2=...=η
n=ε/2, (NTU/n), total heat exchange efficiency of multi-stage heat pipe heat-exchanger rig is η=(n* η to ε=1-exp
11+)/[(n-1) * η
1].
Promptly, can obtain through the efficient of multi-stage heat pipe heat-exchanger rig is analyzed:
1) as given progression n, when NTU trends towards infinity, η
1=1/2, whole heat exchange efficiency η=n/(n+1);
2) as given NTU, when progression n trends towards infinity, whole heat exchange efficiency η=NTU/(NTU+2);
3) as progression n, when NTU is tending towards infinity, whole heat exchange efficiency η → 1.
Can find out that through above-mentioned analysis the single-stage heat exchange of heat pipe changes multistage form into, under the identical situation of whole 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 multistage power hot-pipe system is total the problem that the heat transfer temperature difference loss is big and heat exchange efficiency is low when solving the work of current driving force heat pipe.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is following:
A kind of multistage power hot-pipe system; Comprise one-level power heat pipe unit, second motive force heat pipe unit, three grades of power heat pipe unit, evaporator fan, condenser fan, heat exchanger, connection pipeline and circuit controling elements, can make 4-N level power heat pipe unit as required; Wherein one-level power heat pipe unit, second motive force heat pipe unit and three grades of power heat pipe unit all are an independently closed circuit respectively, and are parallel with one another; Said one-level power heat pipe unit comprises evaporimeter one, condenser one, liquid storage flow straightener one and circulating pump one; Said second motive force heat pipe unit comprises evaporimeter two, condenser two, liquid storage flow straightener two and circulating pump two; Said three grades of power heat pipe unit comprise evaporimeter three, condenser three, liquid storage flow straightener three and circulating pump three; The evaporimeter of said one-level power heat pipe unit, second motive force heat pipe unit and three grades of power heat pipe unit is put mutually side by side; The independent input/output terminal that oneself is arranged respectively; Be assembled in the same housing and be positioned at the air channel that evaporator fan forms, a shared evaporator fan; The condenser of said one-level power heat pipe unit, second motive force heat pipe unit and three grades of power heat pipe unit is put mutually side by side; The independent input/output terminal that oneself is arranged respectively; Be assembled in the same housing and be positioned at the air channel that condenser fan forms, a shared condenser fan.
The evaporimeter of the above one-level power heat pipe unit, second motive force heat pipe unit and three grades of power heat pipe unit and condenser all are heat exchanger or the micro-channel heat exchangers that the coil pipe fin is formed; Its structure is identical, and the heat exchanger of each grade all has input and output port separately.
The above one-level power heat pipe unit, second motive force heat pipe unit and three grades of power heat pipe unit all are respectively independently closed circuits, and they have independently circulating pump, are independent of each other mutually during its work operation.
The above circuit controling element; Mainly be some variations in temperature of monitoring hot environment and low temperature environment through some temperature testing equipments; When the temperature difference between hot environment end and the low temperature environment end surpasses certain value, will control the unlatching of circulating pump automatically, this system has just begun work, when the temperature difference between hot environment end and the low temperature environment end will controlled closing of circulating pump during less than certain value automatically; Owing to do not satisfied condition of work, this system just quits work.
The present invention compared with prior art; Design through increasing heat pipe progression can change the intermediary with thermostatic characteristics into effective way that the media with alternating temperature characteristic is realized reducing the heat transfer temperature difference loss and improved total heat exchange efficiency; Not only improved the heat exchange efficiency in each one week of equipment circulation, and realized the whole system cycle stability, again gas-liquid circulating pump through adding in the system; Operation power is provided for whole hot-pipe system; This is high and low position difference and the fed distance problem of two heat exchangers when having solved the operation of conventional heat pipe system also, thereby has reduced the service condition restriction of equipment, increases substantially the heat exchange efficiency of heat pipe; And used whole system apparatus structure is simple, environmental friendliness.
Description of drawings
Fig. 1 is this system implementation mode structural representation.
[0026] among the figure: (11) one-level power heat pipe unit; (12) second motive force heat pipe unit; (13) three grades of power heat pipe unit; (2) evaporator fan; (3) condenser fan; (41) evaporimeter one; (42) evaporimeter two; (43) evaporimeter three; (51) condenser one; (52) condenser two; (53) condenser three; (61) circulating pump one; (62) circulating pump two; (63) circulating pump three; (71) the liquid storage flow straightener one; (72) the liquid storage flow straightener two; (73) the liquid storage flow straightener three.
The specific embodiment
This embodiment simple structure sketch map is as shown in Figure 1; The system and device agent structure that present embodiment relates to when realizing comprises one-level power heat pipe unit (11); Second motive force heat pipe unit (12); Three grades of power heat pipe unit (13); Evaporator fan (2); Condenser fan (3); Evaporimeter one (41); Evaporimeter two (42); Evaporimeter three (43); Condenser one (51); Condenser two (52); Condenser three (53); Circulating pump one (61); Circulating pump two (62); Circulating pump three (63); Liquid storage flow straightener one (71); Liquid storage flow straightener two (72); Liquid storage flow straightener three (73); Circulation equipment needed thereby and circuit controling element; Whole system can be made 4-N level power heat pipe unit as required, during this system works, and circulating pump (61; 62; 63), condenser fan (3) and evaporator fan (2) are opened power unit entry into service work at different levels simultaneously; During the work of one-level power heat pipe unit; Circulating pump one (61) extracts refrigeration working medium from liquid storage flow straightener one (71) and is sent to the evaporimeter (41); Evaporimeter (41) contacts with high temperature heat source; Liquid working media receives the heating of high temperature heat source and is evaporated to gas in evaporimeter (41), and absorbs heat, and the gas of evaporation formation does not have the evaporated liquid intermediate medium in flow at high speed, to mix formation gas-liquid two-phase flow body each other with part; They enter into condenser (1) from evaporimeter (41) through middle transport; Condenser (51) contacts with low-temperature heat source, and gaseous working medium receives the cooling of low-temperature heat source and is partially condensated as liquid refrigerating working medium, and emits heat in condenser (51); Refrigeration working medium is under the drive of delivery pump (61); They get into the liquid storage flow straightener one (71) from condenser (51), and gas-liquid refrigeration intermediate medium basis physical property is separately separated in liquid storage flow straightener one, has so just accomplished the whole circulation process of one-level power heat pipe unit (11); Second motive force heat pipe unit (12) is identical with one-level power heat pipe unit (11) with three grades of power heat pipe unit (13) circulation pattern.
The poling of room air and evaporimeter and fin carry out heat exchange like this, evaporimeter (41; 42; 43) heating temperature along wind direction from high to low, indoor air temperature also becomes staged to reduce; The poling of outdoor air and condenser and fin carry out heat exchange, condenser (53; 52; 51) heating temperature along wind direction from low to high, final exhaust temperature approaches environment temperature, thereby improves the heat energy utilization rate to greatest extent.
After system's welded and installed finishes, earlier this system is hunted leak, if find to reveal part, just this system is vacuumized, exhaust after the vacuum just to its inner adding cold-producing medium, the preliminary preparation of system has been accomplished like this.
When the hot environment end did not reach the required environment of system works than the low temperature environment end temperature scope that differs, circuit controling element was closed circulating pump (61 through the signal that temperature detection part spreads out of; 62; 63), this system is in halted state; When the hot environment end exceeds certain value than low temperature environment end temperature, partly detect signal by detected temperatures in the circuit control, controlling circulating pump (61 by control circuit again; 62; 63) open automatically, whole system just is in normal operating condition.
Claims (3)
1. multistage power hot-pipe system; Comprise one-level power heat pipe unit (11), evaporator fan (2), condenser fan (3), heat exchanger and connect pipeline; It is characterized in that; Also comprise second motive force heat pipe unit (12) and three grades of power heat pipe unit (13); Can make 4-N level power heat pipe unit as required, wherein one-level power heat pipe unit (11), second motive force heat pipe unit (12) and three grades of power heat pipe unit (13) all are an independently closed circuit respectively, and are parallel with one another; Said one-level power heat pipe unit (11) comprises evaporimeter one (41), condenser one (51), liquid storage flow straightener one (71) and circulating pump one (61); Said second motive force heat pipe unit (12) comprises evaporimeter two (42), condenser two (52), liquid storage flow straightener two (72) and circulating pump two (62); Said three grades of power heat pipe unit (13) comprise evaporimeter three (43), condenser three (53), liquid storage flow straightener three (73) and circulating pump three (63); The evaporimeter (41 of said one-level power heat pipe unit (11), second motive force heat pipe unit (12) and three grades of power heat pipe unit (13); 42; 43) put side by side each other, the independent input/output terminal of oneself is arranged respectively, be assembled in the same housing and be positioned at the air channel that evaporator fan (2) forms, a shared evaporator fan (2); The condenser (51 of said one-level power heat pipe unit (11), second motive force heat pipe unit (12) and three grades of power heat pipe unit (13); 52; 53) put side by side mutually, the independent input/output terminal of oneself is arranged respectively, be assembled in the same housing and be positioned at the air channel that condenser fan (3) forms, a shared condenser fan (3).
2. a kind of multistage power hot-pipe system according to claim 1 is characterized in that, the evaporimeter (41 of said one-level power heat pipe unit (11), second motive force heat pipe unit (12) and three grades of power heat pipe unit (13); 42; 43) and condenser (51; 52; 53) all be heat exchanger or the micro-channel heat exchanger that the coil pipe fin is formed, its structure is identical, and the heat exchanger of each grade all has input and output port separately.
3. a kind of multistage power hot-pipe system according to claim 1; It is characterized in that; Said one-level power heat pipe unit (11), second motive force heat pipe unit (12) and three grades of power heat pipe unit (13) all are respectively independently closed circuits; They have independently circulating pump, are independent of each other mutually during its work operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103193882A CN102788524A (en) | 2012-09-03 | 2012-09-03 | Multistage power heat pipe system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103193882A CN102788524A (en) | 2012-09-03 | 2012-09-03 | Multistage power heat pipe system |
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| CN102788524A true CN102788524A (en) | 2012-11-21 |
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| CN2012103193882A Pending CN102788524A (en) | 2012-09-03 | 2012-09-03 | Multistage power heat pipe system |
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Cited By (1)
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886836A (en) * | 2010-06-29 | 2010-11-17 | 清华大学 | Machine room heat removal device for evaporation cooling type heat-pipe heat exchange |
| KR101063248B1 (en) * | 2011-06-03 | 2011-09-07 | (주)동양테크놀로지 | Waste heat recovery system using separated heat-pipe |
| CN102519288A (en) * | 2012-01-10 | 2012-06-27 | 青岛大学 | Method for transporting energy of gas-liquid two-phase flow |
| CN202719908U (en) * | 2012-09-03 | 2013-02-06 | 北京德能恒信科技有限公司 | Multilevel dynamic heat pipe system |
-
2012
- 2012-09-03 CN CN2012103193882A patent/CN102788524A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886836A (en) * | 2010-06-29 | 2010-11-17 | 清华大学 | Machine room heat removal device for evaporation cooling type heat-pipe heat exchange |
| KR101063248B1 (en) * | 2011-06-03 | 2011-09-07 | (주)동양테크놀로지 | Waste heat recovery system using separated heat-pipe |
| CN102519288A (en) * | 2012-01-10 | 2012-06-27 | 青岛大学 | Method for transporting energy of gas-liquid two-phase flow |
| CN202719908U (en) * | 2012-09-03 | 2013-02-06 | 北京德能恒信科技有限公司 | Multilevel dynamic heat pipe system |
Cited By (1)
| 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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Application publication date: 20121121 |