CN105115086A - Natural cold source heat pipe type cold accumulation system of water chilling unit - Google Patents
Natural cold source heat pipe type cold accumulation system of water chilling unit Download PDFInfo
- Publication number
- CN105115086A CN105115086A CN201510600846.3A CN201510600846A CN105115086A CN 105115086 A CN105115086 A CN 105115086A CN 201510600846 A CN201510600846 A CN 201510600846A CN 105115086 A CN105115086 A CN 105115086A
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- heat pipe
- pipe array
- evaporation
- condensation
- heat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
Abstract
The invention discloses a natural cold source heat pipe type cold accumulation system of a water chilling unit. The natural cold source heat pipe type cold accumulation system comprises a cold accumulation heat exchanger and a condensation heat pipe array. The cold accumulation heat exchanger comprises a closed water tank with refrigerant and an evaporation heat pipe array, and the closed water tank is connected with a cold water pipeline in parallel. The evaporation heat pipe array is adopted as an evaporation segment of heat pipes, and an evaporation pipe is communicated with the condensation heat pipe array in the outer environment. The condensation heat pipe array is adopted as a condensation segment of the heat pipes, the bottom is connected with the evaporation heat pipe array through a liquid return pipe, the condensation heat pipe array achieves spraying washing and air cooler cooling, and the liquid return pipe is provided with a refrigerating fluid pump for forcing condensate to flow back. The heat pipe arrays are formed by vertically arranging a plurality of lines of spiral heat pipes, each line of spiral heat pipes is formed by winding two spiral heat pipes, and liquid absorption core layers are arranged on the inner walls of the spiral heat pipes. The system is small in size, a natural cold source in the outer environment is stored in the phase change refrigerant through the efficient heat transfer performance of the heat pipes, and the latent heat of the refrigerant is effectively utilized.
Description
Technical field
The invention belongs to the refrigeration technology field of air-conditioner set, particularly relate to the data center machine room refrigeration and cold accumulation system utilizing natural cooling source.
Background technology
The lasting refrigerating capacity of data center to refrigeration plant requires very high, when after external power source power-off, UPS may be used for information technoloy equipment and powers, but is typically not enough to and powers to the air-conditioning equipment that same power consumption is huge, only can power by the less equipment of the power consumption such as fan, water pump.Therefore, after power-off appears in data center, the conveying sink temperature of air conditioner in machine room equipment 2, can rapidly increase to about 40 DEG C in 3 minutes, cannot provide enough low-temperature receivers for machine room, easily causes machine of delaying or the damage of machine room electronic equipment.The power-off relay of current air conditioner in machine room is all adopt large-scale water system cold-storage tank, bulky, take up space large, makes troubles, cause energy saving of system inefficiency to heat insulation work.
Summary of the invention
Goal of the invention: for above-mentioned existing Problems existing and deficiency, the object of this invention is to provide a kind of handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system, small volume, utilize the efficient heat transfer performance of gravity assisted heat pipe to be stored in phase transformation refrigerant by the natural cooling source of external environment, effectively make use of the latent heat of refrigerant.
Technical scheme: for achieving the above object, the technical solution used in the present invention is: a kind of handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system, described handpiece Water Chilling Units is provided with the cold water pipes for cold water, comprise cold-storage heat-exchanger and the condensation heat pipe array being placed in external environment, described cold-storage heat-exchanger comprises the evaporation heat pipe array storing and have the airtight water tank of refrigerant He be located at airtight water tank inside, described airtight water tank is provided with import and outlet, and import and outlet are connected in parallel by the cold water pipes of pipeline and handpiece Water Chilling Units, and by being located at being incorporated to of Valve controlling cold-storage heat-exchanger on pipeline, evaporation heat pipe array in described airtight water tank is as the evaporator section of heat pipe, and the steam (vapor) outlet at top is communicated with the condensation heat pipe array of external environment by evaporation tube, described condensation heat pipe array is as the condensation segment of heat pipe, and bottom is connected to form circulation with evaporation heat pipe array again by liquid back pipe, and described condensation heat pipe array is also furnished with spray washing and air-cooler cools, and described liquid back pipe is provided with refrigerated medium pump, described evaporation heat pipe array and condensation heat pipe array vertically rearrange by multiple row spiral heat pipe, and two helical form heat pipes that often row spiral heat pipe is 3 ~ 8cm by internal diameter are entwined, and the inwall of spiral heat pipe is provided with wick layer.
Further improvement, described airtight water tank is also connected with refrigerant buffer container, thus can prevent refrigerant freezing and expansion from overflowing.
Further improvement, described airtight water tank outer wall is provided with coil pipe layer, and the outer of coil pipe layer is arranged with heat-insulation layer.When in water tank, refrigerant freezes excessive, can circulate in coil pipe in coil pipe layer machine room hot blast or other thermals source carry out heat exchange; When refrigerant in water tank also needs further cold-storage, coil pipe layer can be used as the effect that thermal insulation layer and heat-insulation layer play insulation jointly.
Further improvement, the outer wall at 1/2 ~ 2/3 position of the upper end of described evaporation heat pipe array is smooth, and the outer wall at residue position is provided with ring fin.The spiral heat pipe adopting two strands to be wound around due to heat pipe in the present invention also to immerse in refrigerant heat absorption working medium is evaporated, and pipe range is at about 1m, evaporation endothermic Duan Guan top in this process, therefore first heat pipe outer wall freezes from middle and upper part, only the icing rate that ring fin is conducive to hypomere is set at hypomere and catches up with upper position, thus reach and evenly freeze.In addition, the more important thing is and make to keep more Large space between two of middle epimere strands of heat pipes, be beneficial to heat transfer.
Further improvement, the spacing of each heat pipe in described evaporation heat pipe array and condensation heat pipe array is 8 ~ 30cm, preferred 15cm.
Further improvement, described refrigerant is water, the calcium chloride water of 30% ~ 45% or the aqueous solution containing 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 25% sodium acetate trihydrate, or containing the aqueous solution of 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 30% calcium chloride.Phase transition temperature at there are 5 ~ 20 DEG C, thus its latent heat of phase change is effectively utilized under the environment that temperature is higher.
Further improvement, described spiral heat pipe adopts copper pipe, and the wick layer on inwall is porous foam layers of copper, has micropore capillarity and to be refluxed by working fluid condenses liquid absorptive collection efficiently evaporation endothermic again, and sintering cost is low.
Further improvement, the junction of the cold water pipes of described airtight water tank and handpiece Water Chilling Units is provided with triple valve, thus can control cold accumulation system and whether access handpiece Water Chilling Units, also can access simultaneously.
Further, the outsourcing footpath of described often row spiral heat pipe is 14 ~ 45cm, and the caliber of every root spiral heat pipe is 5 ~ 15cm, and helical pitch is 5 ~ 12cm; The winding direction of two row spiral heat pipes often in row spiral heat pipe is identical or contrary.
Beneficial effect: compared with prior art, the present invention has the following advantages: pass through cold accumulation system, the auxiliary equipment of blower fan, water pump is only opened when power-off, also can be continuously data center module and cold is provided, as long as cold accumulation system can provide the cold of 10-15 minute, thus enough time is had to start the stand-by power supply of data center module; The pattern can opening cold-storage and compression refrigeration mixed running provides larger cold in a short time, thus the sudden load change of reply machine room.
Accompanying drawing explanation
Fig. 1 is the structural representation of cold accumulation system of the present invention;
Fig. 2 is the principle schematic of cold accumulation system of the present invention;
The structural representation of Fig. 3 position spiral heat pipe of the present invention.
Wherein, handpiece Water Chilling Units 1, cold-storage heat-exchanger 2, condensation heat pipe array 3, airtight water tank 4, evaporation heat pipe array 5, cold water pipes 6, refrigerant surge tank 7, valve 8, spiral heat pipe 9, blower fan 10, refrigerated medium pump 11.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
As shown in Figure 1, handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system of the present invention, mainly comprise: cold-storage heat-exchanger and the condensation heat pipe array being placed in external environment, described cold-storage heat-exchanger comprises the evaporation heat pipe array storing and have the airtight water tank of refrigerant He be located at airtight water tank inside, import and the outlet of described airtight water tank are connected in parallel by the cold water pipes of pipeline and handpiece Water Chilling Units, and by being located at being incorporated to of Valve controlling cold-storage heat-exchanger on pipeline, water tank is also connected with refrigerant surge tank and cushions refrigerant freezing and expansion simultaneously.Evaporation heat pipe array in described airtight water tank is as the evaporator section of heat pipe, and the steam (vapor) outlet at top is communicated with the condensation heat pipe array of external environment by evaporation tube; Described condensation heat pipe array is as the condensation segment of heat pipe, and bottom is connected to form circulation with evaporation heat pipe array again by liquid back pipe, described condensation heat pipe array is also furnished with spray washing and air-cooler cools, and refrigerated medium pump is set on liquid back pipe (due to some place demand, condensation heat pipe array is distant, working fluid condenses liquid reflux, now by refrigerated medium pump by worker quality liquid forced refluence); Described evaporation heat pipe array and condensation heat pipe array vertically rearrange by multiple row spiral heat pipe, and two helical form heat pipes that often row spiral heat pipe is 3 ~ 8cm by internal diameter are entwined, and the inwall of spiral heat pipe is provided with wick layer.The stroke of helix tube is longer relative to straight tube, has larger heat exchange area and working medium capacity, especially when two-tube helically coiling arrange time, larger heat exchange area can be exchanged for less space.
Preferably, deliver to the manifold trunk of condensation heat pipe array after evaporation heat pipe array collects working substance steam by manifold trunk, described working medium generally adopts freon.
In such scheme, refrigerant directly can adopt water, or adopts the calcium chloride water that latent heat is large.Preferably, the aqueous solution of 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 25% sodium acetate trihydrate can also be contained, or contain the aqueous solution of 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 30% calcium chloride, because the icing phase transition temperature of above-mentioned mixing refrigerant can reach 5 ~ 25 DEG C, thus effectively can utilize ambient temperature in the summer that temperature is higher by its latent heat of phase change, the spray washing cold wind function outside especially supporting condensation heat pipe effectively utilizes Environmental cold source.
Preferably, the outer wall at 1/2 ~ 2/3 position of the upper end of evaporation heat pipe array is smooth, and the outer wall at residue position is provided with ring fin.The spiral heat pipe adopting two strands to be wound around due to heat pipe in the present invention also to immerse in refrigerant heat absorption working medium is evaporated, and pipe range is at about 1m, evaporation endothermic Duan Guan top in this process, therefore first heat pipe outer wall freezes from middle and upper part, only the icing rate that ring fin is conducive to hypomere is set at hypomere and catches up with upper position, thus reach and evenly freeze.In addition, the more important thing is and make to keep more Large space between two of middle epimere strands of heat pipes, be beneficial to heat transfer.Further, the spacing of evaporating each heat pipe in heat pipe array and condensation heat pipe array is 8 ~ 30cm, preferred 15cm, thus under the prerequisite ensureing certain refrigeration density, prevents water tank completely icing.
Further, described spiral heat pipe adopts copper pipe, and the wick layer on inwall is porous foam layers of copper, has micropore capillarity and to be refluxed by working fluid condenses liquid absorptive collection efficiently evaporation endothermic again.Sodium chloride and electrolytic copper powder can be sintered under a shielding gas during production and form mesh-structured fine-celled foam layers of copper, be conducive to the backflow of condensed water.In addition, the junction of the cold water pipes of described airtight water tank and handpiece Water Chilling Units is provided with triple valve, thus can control cold accumulation system and whether access handpiece Water Chilling Units, also can access simultaneously.
While data center's refrigeration system normally works, the condensation heat pipe array of heat pipe is by spray washing evaporation and the heat exchange of blower fan cold wind, constantly the freon steam of evaporation heat pipe array evaporation release is carried out being cooled to liquid working substance, and be back to evaporation heat pipe array by gravitational difference effect, and the heat of vaporization again absorbed in water tank refrigerant, thus constantly from external environment condition, obtain low-temperature receiver and to the refrigerant cooling in water tank, and be cooled to mixture of ice and water or other liquid-solid mixtures gradually.When power-off occurs in data center, UPS starts drive blower fan and circulating pump, and by-pass valve control makes the low-temperature receiver of handpiece Water Chilling Units switch, for data center continues cooling.
Claims (10)
1. a handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system, described handpiece Water Chilling Units is provided with the cold water pipes for cold water, it is characterized in that: comprise cold-storage heat-exchanger and the condensation heat pipe array being placed in external environment, described cold-storage heat-exchanger comprises the evaporation heat pipe array storing and have the airtight water tank of refrigerant He be located at airtight water tank inside, described airtight water tank is provided with import and outlet, and import and outlet are connected in parallel by the cold water pipes of pipeline and handpiece Water Chilling Units, and by being located at being incorporated to of Valve controlling cold-storage heat-exchanger on pipeline; Evaporation heat pipe array in described airtight water tank is as the evaporator section of heat pipe, and the steam (vapor) outlet at top is communicated with the condensation heat pipe array of external environment by evaporation tube; Described condensation heat pipe array is as the condensation segment of heat pipe, and bottom is connected to form circulation with evaporation heat pipe array again by liquid back pipe, and described liquid back pipe is provided with the backflow of refrigerated medium pump forced condensation liquid.
2. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, it is characterized in that: described condensation heat pipe array is also furnished with spray washing and air-cooler cools, described evaporation heat pipe array and condensation heat pipe array vertically rearrange by multiple row spiral heat pipe, often row spiral heat pipe is entwined by two helical form heat pipes, and the inwall of spiral heat pipe is provided with wick layer.
3. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, is characterized in that: described airtight water tank is also connected with refrigerant buffer container.
4. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, it is characterized in that described airtight water tank outer wall is provided with coil pipe layer, the outer of coil pipe layer is arranged with heat-insulation layer.
5. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 4, is characterized in that: the outer wall at 1/2 ~ 2/3 position of the upper end of described evaporation heat pipe array is smooth, and the outer wall at residue position is provided with ring fin.
6. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, is characterized in that: the spacing of each heat pipe in described evaporation heat pipe array and condensation heat pipe array is 8 ~ 30cm.
7. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, it is characterized in that: described refrigerant is water, the calcium chloride water of 30% ~ 45% or the aqueous solution containing 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 25% sodium acetate trihydrate, or containing the aqueous solution of 20% ~ 40% Disodium sulfate decahydrate and 15% ~ 30% calcium chloride.
8. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, it is characterized in that: described spiral heat pipe adopts copper pipe, and the wick layer on inwall is porous foam layers of copper.
9. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, is characterized in that: the junction of the cold water pipes of described airtight water tank and handpiece Water Chilling Units is provided with triple valve.
10. handpiece Water Chilling Units natural cooling source heat pipe-type cold accumulation system according to claim 1, is characterized in that: the outsourcing footpath of described often row spiral heat pipe is 14 ~ 45cm, and the caliber of every root spiral heat pipe is 5 ~ 15cm, and helical pitch is 5 ~ 12cm; The winding direction of two row spiral heat pipes often in row spiral heat pipe is identical or contrary.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510600846.3A CN105115086A (en) | 2015-09-18 | 2015-09-18 | Natural cold source heat pipe type cold accumulation system of water chilling unit |
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| CN201510600846.3A CN105115086A (en) | 2015-09-18 | 2015-09-18 | Natural cold source heat pipe type cold accumulation system of water chilling unit |
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| CN201510600846.3A Pending CN105115086A (en) | 2015-09-18 | 2015-09-18 | Natural cold source heat pipe type cold accumulation system of water chilling unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758062A (en) * | 2016-03-01 | 2016-07-13 | 上海东方低碳科技产业股份有限公司 | High-efficiency energy-saving double-source cold-hot water machine for hotels |
| CN112503663A (en) * | 2020-12-04 | 2021-03-16 | 依米康科技集团股份有限公司 | Double-power heat pipe system and control method |
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| JPH03294730A (en) * | 1990-04-10 | 1991-12-25 | Furukawa Electric Co Ltd:The | Heat accumulation type air-conditioning and cooling method |
| CN1789877A (en) * | 2004-12-17 | 2006-06-21 | 尹学军 | Heat pipe device utilizing natural cold energy and application thereof |
| CN101082434A (en) * | 2007-07-05 | 2007-12-05 | 南京大学 | Self circulation type cold storage air conditioner system |
| CN201218577Y (en) * | 2008-05-14 | 2009-04-08 | 张建瓴 | Exhaust heat recovery and cold accumulation apparatus |
| CN102573420A (en) * | 2012-01-05 | 2012-07-11 | 南京佳力图空调机电有限公司 | Embedded cabinet air-conditioning refrigeration system |
| CN205048615U (en) * | 2015-09-18 | 2016-02-24 | 南京佳力图空调机电有限公司 | Cooling water set nature cold source heat pipe formula cold -storage system |
-
2015
- 2015-09-18 CN CN201510600846.3A patent/CN105115086A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03294730A (en) * | 1990-04-10 | 1991-12-25 | Furukawa Electric Co Ltd:The | Heat accumulation type air-conditioning and cooling method |
| CN1789877A (en) * | 2004-12-17 | 2006-06-21 | 尹学军 | Heat pipe device utilizing natural cold energy and application thereof |
| CN101082434A (en) * | 2007-07-05 | 2007-12-05 | 南京大学 | Self circulation type cold storage air conditioner system |
| CN201218577Y (en) * | 2008-05-14 | 2009-04-08 | 张建瓴 | Exhaust heat recovery and cold accumulation apparatus |
| CN102573420A (en) * | 2012-01-05 | 2012-07-11 | 南京佳力图空调机电有限公司 | Embedded cabinet air-conditioning refrigeration system |
| CN205048615U (en) * | 2015-09-18 | 2016-02-24 | 南京佳力图空调机电有限公司 | Cooling water set nature cold source heat pipe formula cold -storage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758062A (en) * | 2016-03-01 | 2016-07-13 | 上海东方低碳科技产业股份有限公司 | High-efficiency energy-saving double-source cold-hot water machine for hotels |
| CN112503663A (en) * | 2020-12-04 | 2021-03-16 | 依米康科技集团股份有限公司 | Double-power heat pipe system and control method |
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Application publication date: 20151202 |