CN106679477A - Method for collecting latent heat of solidification of cold water - Google Patents
Method for collecting latent heat of solidification of cold water Download PDFInfo
- Publication number
- CN106679477A CN106679477A CN201611267862.6A CN201611267862A CN106679477A CN 106679477 A CN106679477 A CN 106679477A CN 201611267862 A CN201611267862 A CN 201611267862A CN 106679477 A CN106679477 A CN 106679477A
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- Prior art keywords
- cold water
- heat
- ice
- water
- solidification
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a method for collecting the latent heat of solidification of cold water, belongs to the technical field of energy, and aims to provide a method for collecting the latent heat of solidification of the cold water, which realizes the purpose that the latent heat of solidification is extracted from the cold water and supplied to the outside. According to the method for collecting the latent heat of solidification of the cold water, two sides of a wide cold water runner are iced up, and then a scraper is continuously rotated to remove and discharge ice, so that unblocking of the cold water runner is guaranteed; and furthermore, by combination of thermal ice melting and mechanical ice discharging, continuous circulation of continuous icing, deicing, ice discharging and icing again of the cold water is guaranteed, and continuous and stable extraction of the latent heat of solidification of the cold water for external heat supplying is realized. The method has the outstanding advantages of simple process form, reliability and stability, and is applicable to a heat supply system of a heat pump using the latent heat of solidification.
Description
Technical field
The present invention relates to a kind of extract the cold water latent heat of solidification acquisition method that latent heat external heat supply is discharged when cold water freezes, category
In energy technology field.
Background technology
Adopt heat pump techniques that low-grade cold and hot amount is extracted from water source for space heating cooling, with huge energy-conservation,
Environmental protection and economic worth, are one of important channels of energy-saving and emission-reduction.But limited by water source, do not have where needing heat supply
Water source, where having a large amount of water sources, may no building, this causes the application of water resource heat pump to be restricted.If can
The latent heat of solidification discharged when cold water freezes is extracted effectively, then water consumption can be greatly reduced, because 0 DEG C of water becomes 0 DEG C
Ice, reduces about 80 DEG C equivalent to the temperature of water, and the latent heat of solidification of water is huge.It is space heating to extract cold water latent heat of solidification,
With three advantages：(1) water source consumption can be reduced, or equal water source can increases more than 10 times of area of heat-supply service；(2) when with water
After amount is greatly reduced, water can be carried out long-distance sand transport；(3), when condition is suitable, artificial lake heat supply can be built.
But extract the technical barrier of cold water latent heat of solidification be how to realize under the conditions of low input, high efficiency it is continuous freeze,
Deicing and ice discharging process, in the continuous repetitive process of the process, source pump persistently runs without interruption.The technical barrier not yet has
Effect is solved, and extracts the heat pump heat distribution system also non-practical application of cold water latent heat of solidification.
Although extracting cold water latent heat of solidification and ice making or ice storage technology all producing ice, substantially there is larger difference, it is front
Person is to extract the external heat supply of latent heat, and the latter is that, for ice making, its purpose is entirely different, and the former needs continual external heat supply
(freeze, take during deicing and ice discharging hot uninterrupted), the latter can intermittent ice making, it is entirely different that this just determines that both need
Technical scheme.
Patent No. " 200610009616.0 ", entitled " a kind of harvester of cold water solidification heat ", Publication No.
The patent of " CN11800746A ", arranges flood dragon scraper plate, in the heat exchanger tube for freezing using mechanical deicing.The technical scheme is present
Mechanical technology is complicated, and requirement on machining accuracy is higher, in addition, scraping ice by machinery completely, not only needs mechanical work big, and energy consumption is big, after
The operation maintenance difficulty of phase is also larger.
Patent No. " 201210436817.4 ", entitled " ice cold water storage heat storage system ", Publication No.
The patent of " CN102927638A ", its evening are freezed, and daytime uses, and discontinuously, and efficiency is very low, different from extracting cold water solidification
Latent heat, needs continuous operation.
The patent of inventor's application, Application No. " 201610701458.9 ", title are " a kind of to extract heat of solidification or ice making
Heat pump heating and cooling system ", the patent is to carry out online ice making and deicing using liquid-solid fluidized bed and sand removing process using vortex flow,
As ice sheet is formed comparatively fast in actual motion, ice sheet is under the shock of sand, it is impossible to timely and effectively peel off, and can't realize continuous
Latent heat of solidification is extracted stably.
The method that the present invention utilizes cold water width runner and hot ice-melt and mechanical ice discharging, under the conditions of low cost, high efficiency, protects
Card icing, deicing, ice discharging and the uninterrupted circulation for freezing again, realize the continuous and steady operation for extracting cold water latent heat of solidification.
The content of the invention
It is an object of the invention to provide a kind of cold water latent heat of solidification acquisition method, using cold water width runner and hot ice-melt and machine
The method of tool ice discharging, it is ensured that continuous icing, deicing and the uninterrupted circulation for freezing again of water, realizes extraction cold water latent heat of solidification
Continuous and steady operation.
The present invention is adopted the technical scheme that to solve above technical problem：
A kind of cold water latent heat of solidification acquisition method of the present invention, described method are comprised the following steps：
Step one：Many heat exchanger tubes come horizontal direction parallel cloth in vertical direction composition heat exchange bank of tubes, multiple heat exchanger tubes
Put, the two ends of many heat exchanger tubes are connected with left header and right header respectively, between each two heat exchange bank of tubes, leave 10~80mm
Spacing, cold water flows in the spacing, and the spacing is referred to as cold water width runner, and temperature is antifreeze between 0 DEG C~-6 DEG C
Bottomhole pressure of the aqueous solution in every heat exchanger tube, and by forming multitube distance flowing between left header and right header back and forth, prevent
Freeze aqueous solution to exchange heat with cold water by pipe wall of heat exchange pipe in flow process, after cold water release heat, portion of cold water is in cold water width
The heat exchanging pipe wall of runner both sides freezes, and realizes freezing process；
Step 2：After the heat exchanging pipe wall of cold water width runner both sides freezes reaches certain thickness (2~5mm), ice-melt control
Valve processed is opened, and part anti-freeze water solution carries out heat exchange in ice-melt heat exchanger with hot water, and anti-freeze water solution temperature brings up to 0 DEG C
After above, the ice sheet of the heat exchanging pipe wall of cold water width runner both sides is heated and comes off, and realizes ice detachment；
Step 3：Motor and speed reducer drives the round-the-clock rotation of scraper, scraper to rotate in cold water width runner, cold water
When not freezing, scraper disturbance current strengthen heat exchange, and after ice sheet comes off, ice sheet is crushed by scraper, and cold water drives trash ice in cold water width
Flowing in runner, finally flows out from cooling water outlet, realizes ice discharging process；
Step 4：After the heat exchanging pipe wall ice sheet of cold water width runner both sides comes off, ice-melt control valve cuts out, less than 0 DEG C
Anti-freeze water solution exchanged heat with cold water again, heat exchange tube wall freeze again, so repeatedly.
A kind of described cold water latent heat of solidification acquisition method, is characterized in that arranging anti-freeze water solution circulating pump and heat pump machine
Group, anti-freeze water solution iterative cycles between heat exchanger tube and source pump.
A kind of described cold water latent heat of solidification acquisition method, it is characterized in that two heat exchange bank of tubes between spacing be 20~
60mm。
A kind of described cold water latent heat of solidification acquisition method, it is characterized in that two heat exchange bank of tubes between spacing be 20~
30mm。
The present invention operation logic be：
Cold water flows in cold water width runner, is exchanged heat by the anti-freeze water solution in exchange heat tube wall and heat exchanger tube less than 0 DEG C,
Portion of cold water freezes in heat exchanging pipe wall after discharging latent heat of solidification, after cold water width runner both sides freeze reaches certain thickness,
Ice-melt control valve is opened, and part anti-freeze water solution is exchanged heat in ice-melt heat exchanger with hot water, and anti-freeze water solution temperature is lifted
To after more than 0 DEG C, the ice sheet of cold water width runner both sides is heated and comes off.Motor and speed reducer drives the scraper on main shaft successive
Rotation, when scraper is rotated in the cold water width runner, on the one hand play turbulent water and strengthen heat exchange acting on, on the other hand when ice sheet from
After wall comes off, ice sheet is crushed, stir cold water, allow cold water to flow out with trash ice.After ice sheet comes off, ice-melt control valve cuts out,
Cold water continues release heat and freezes in cold water width runner both sides again, so repeatedly.
The present invention has following features and its advantage relative to prior art：
First, the present invention takes and freezes in cold water width runner both sides, continuously rotates deicing and ice discharging using scraper, it is ensured that cold
Water flow passage it is unimpeded, deicing, ice discharging effect are good, and heat exchange efficiency can improve more than 30%.
2nd, the present invention adopts hot ice-melt and mechanical ice discharging to combine, and not only increases heat exchange efficiency, and due to machinery row
The wasted work of ice and abrasion reach minimum state, not only extend the service life of mechanical part, and later maintenance is overhauled into
Originally substantially reduce, its operating cost will reduce 20% or so.
3rd, the present invention is capable of achieving continuous icing, deicing, ice discharging and the uninterrupted circulation for freezing again of cold water, general ice making
Or ice cold-storage technique need shut down ice-melt, and the present invention can continuous-stable extract cold water latent heat of solidification, in low input, high efficiency bar
Under part, the external heat supply of extraction cold water latent heat of solidification is realized, it is practical.
The present invention and Publication No. CN11800746A, Publication No. CN102927638A and Application No.
201610701458.9 and its difference of similar patent is：
(1) principle of method is different.This method is taken in the icing of cold water width runner both sides, deicing and ice discharging, by heat
Ice-melt and mechanical ice discharging combine, and realize icing, deicing, ice discharging and the uninterrupted circulation for freezing again.And Publication No.
The single machinery of patent utilization of CN11800746A scrapes ice method；The patent utilization solid-liquid stream of Application No. 201610701458.9
Changing bed and sand removing process using vortex flow carries out online ice making and deicing.
(2) function of method is different.Although being all to extract cold water latent heat of solidification heat supply, the present invention can be realized continuously not
Interruption heat supply.And the patent of Publication No. CN11800746A, with the carrying out of heat supply, the thickening of ice sheet, it needs shutdown to melt
Ice, the patent of Publication No. CN102927638A, evening refrigeration are used, discontinuously daytime.Application No. 201610701458.9
Patent, the impulsive force of sand is not enough to peel off ice sheet, also needs to shut down.
(3) effect of method is different.Deicing of the present invention thoroughly, is covered without ice sheet residual, and heat exchange efficiency is high, the efficiency of system
Greatly improve.And the single machinery of patent utilization of Publication No. CN11800746A scrapes ice method, it is impossible to effective and thorough deicing,
Heat exchange efficiency is low；The patent refrigerating efficiency of Publication No. CN102927638A is very low；Application No. 201610701458.9 it is special
Not in time, heat exchange efficiency is low for sharp deicing, greatly reduces the efficiency of system.
Description of the drawings
Fig. 1 is the schematic diagram of the inventive method；
Fig. 2 is the sectional view of the Section A-A of Fig. 1；
Fig. 3 is the schematic diagram of specific embodiment two.
It is in figure, heat exchanger tube 1, the heat exchange wide runner 3 of bank of tubes 2, cold water, left header 4, right header 5, anti-freeze water solution entrance 6, anti-
Freeze aqueous solution outlet 7, cooling water inlet 8, cooling water outlet 9, motor 10, decelerator 11, main shaft 12, scraper 13, ice-melt heat exchanger 14,
Ice-melt control valve 15, source pump 16, anti-freeze water solution circulating pump 17, end water circulating pump 18.
Specific embodiment
Specific embodiment one, as shown in Fig. 1~2, present embodiment is made up of following steps：(1) many heat exchanger tubes 1
In vertical direction composition heat exchange bank of tubes 2, multiple heat exchange bank of tubes 2 are arranged in parallel in the horizontal direction, the two ends difference of many heat exchanger tubes 1
It is connected with left header 4 and right header 5, between each two heat exchange bank of tubes 2, leaves the spacing of 10~80mm, cold water is in the spacing
Flowing, the spacing are referred to as the wide runner 3 of cold water, and anti-freeze water solution of the temperature between 0 DEG C~-6 DEG C is in every heat exchanger tube
Bottomhole pressure, and by forming multitube distance flowing between left header 4 and right header 5 back and forth, anti-freeze water solution is in flow process
In exchanged heat by pipe wall of heat exchange pipe and cold water, after cold water release heat, heat exchange tube wall of the portion of cold water in wide 3 both sides of runner of cold water
Face freezes, and realizes freezing process；(2) certain thickness (2~5mm) is reached when the heat exchanging pipe wall of wide 3 both sides of runner of cold water freezes
Afterwards, ice-melt control valve 15 is opened, and part anti-freeze water solution carries out heat exchange, anti-freeze water solution with hot water in ice-melt heat exchanger 14
After temperature brings up to more than 0 DEG C, the ice sheet of the heat exchanging pipe wall of wide 3 both sides of runner of cold water is heated and comes off, and realizes ice detachment；
(3) motor 10 and reductor 11 drive 13 round-the-clock rotation of scraper, and, in the wide 3 interior rotation of runner of cold water, cold water is not for scraper 13
During icing, the disturbance current of scraper 13 strengthen heat exchange, and after ice sheet comes off, ice sheet is crushed by scraper, and cold water drives trash ice in cold water width
In runner 3, flowing, finally flows out from cooling water outlet 9, realizes ice discharging process；(4) when the heat exchange tube wall of wide 3 both sides of runner of cold water
After face ice sheet comes off, ice-melt control valve 15 cuts out, and the anti-freeze water solution less than 0 DEG C is exchanged heat again with cold water, and heat exchange tube wall is again
Freeze, so repeatedly.
Specific embodiment two, as shown in figure 3, a kind of cold water latent heat of solidification acquisition method of present embodiment, is in tool
Anti-freeze water solution circulating pump 17 and source pump 16 are set on the basis of body embodiment one, and anti-freeze water solution is in 1 He of heat exchanger tube
Iterative cycles between source pump 16.
Specific embodiment three, it is 20~60mm that present embodiment is the spacing between two heat exchange bank of tubes 2.
Specific embodiment four, it is 20~30mm that present embodiment is the spacing between two heat exchange bank of tubes 2.
Operation principle
Anti-freeze water solution enters back into heat exchanger tube 1 into left header 4 from anti-freeze water solution import 6, and cold water is in the wide runner of cold water 3
Middle flowing, by exchanging heat, tube wall is exchanged heat with the 1 interior anti-freeze water solution less than 0 DEG C of heat exchanger tube, and portion of cold water discharges latent heat of solidification
Freeze in wide 3 both sides of runner of cold water afterwards, after icing reaches certain thickness, ice-melt control valve 15 is opened, part anti-freeze water solution
Exchanged heat in ice-melt heat exchanger 14 with hot water, anti-freeze water solution temperature is lifted to after more than 0 DEG C, wide 3 both sides of runner of cold water
Ice sheet be heated and come off.Motor 10 and decelerator 11 drive scraper 13 continuously to rotate and crush ice sheet, and cold water is with broken
Ice is flowed out from cooling water outlet 9.After ice sheet comes off, ice-melt control valve 15 cuts out, and cold water continues heat exchange and freezes, so repeatedly.Anti-
In the presence of freezing water solution cycle pump 17, anti-freeze water solution Jing enters source pump 16, in source pump 16 discharges heat
Heat exchanger tube 1 is entered afterwards, and anti-freeze water solution enters back into source pump 16 after the latent heat of solidification of water is absorbed in heat exchanger tube 1 and completes closed
Circulation.In the case where end water circulating pump 18 is acted on, end water enters source pump 16, is sent after temperature rise of absorbing heat in source pump 16
To user to heat supply.
Claims (4)
1. a kind of cold water latent heat of solidification acquisition method, is characterized in that described method is comprised the following steps：(1) many heat exchanger tubes
(1) in vertical direction composition heat exchange bank of tubes (2), multiple heat exchange bank of tubes (2) are arranged in parallel in the horizontal direction, many heat exchanger tubes (1)
Two ends be connected with left header (4) and right header (5) respectively, leave between 10~80mm between each two heat exchange bank of tubes (2)
Flow in the spacing away from, cold water, the spacing is referred to as cold water width runner (3), anti-freezing water of the temperature between 0 DEG C~-6 DEG C
Bottomhole pressure of the solution in every heat exchanger tube, and by forming multitube distance stream back and forth between left header (4) and right header (5)
Dynamic, anti-freeze water solution is exchanged heat with cold water by pipe wall of heat exchange pipe in flow process, and after cold water release heat, portion of cold water is cold
The heat exchanging pipe wall of water width runner (3) both sides freezes, and realizes freezing process；(2) when the heat exchanger tube of cold water width runner (3) both sides
Wall freezes after reaching certain thickness (2~5mm), and ice-melt control valve (15) is opened, and part anti-freeze water solution is with hot water in ice-melt
Heat exchange is carried out in heat exchanger (14), after anti-freeze water solution temperature brings up to more than 0 DEG C, the heat exchange of cold water width runner (3) both sides
The ice sheet in tube wall face is heated and comes off, and realizes ice detachment；(3) motor (10) and reductor (11) drive scraper (13) continuous not
The rotation for stopping, scraper (13) are rotated in cold water width runner (3), and when cold water does not freeze, scraper (13) disturbance current are strengthened changing
Heat, after ice sheet comes off, ice sheet is crushed by scraper, and cold water drives trash ice to flow in cold water width runner (3), finally from cooling water outlet
(9) flow out, realize ice discharging process；(4) after the heat exchanging pipe wall ice sheet of cold water width runner (3) both sides comes off, ice-melt control valve
(15) close, the anti-freeze water solution less than 0 DEG C is exchanged heat again with cold water, heat exchange tube wall freezes again, so repeatedly.
2. a kind of cold water latent heat of solidification acquisition method as claimed in claim 1, it is characterised in that anti-freeze water solution circulation is set
Pump (17) and source pump (16), anti-freeze water solution iterative cycles between heat exchanger tube (1) and source pump (16).
3. a kind of cold water latent heat of solidification acquisition method as claimed in claim 1, it is characterised in that between two heat exchange bank of tubes (2)
Spacing be 20~60mm.
4. a kind of cold water latent heat of solidification acquisition method as claimed in claim 3, it is characterised in that between two heat exchange bank of tubes (2)
Spacing be 20~30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267862.6A CN106679477A (en) | 2016-12-31 | 2016-12-31 | Method for collecting latent heat of solidification of cold water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267862.6A CN106679477A (en) | 2016-12-31 | 2016-12-31 | Method for collecting latent heat of solidification of cold water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106679477A true CN106679477A (en) | 2017-05-17 |
Family
ID=58848902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611267862.6A Pending CN106679477A (en) | 2016-12-31 | 2016-12-31 | Method for collecting latent heat of solidification of cold water |
Country Status (1)
| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088119A (en) * | 2018-01-09 | 2018-05-29 | 青岛科创蓝新能源股份有限公司 | A kind of cold water phase-change energy heat pump ice discharge apparatus and system |
| CN109579603A (en) * | 2018-12-28 | 2019-04-05 | 杨胜东 | A kind of heat-exchanger rig extracting cold water solidification heat |
| CN111947364A (en) * | 2020-09-15 | 2020-11-17 | 中交第四航务工程勘察设计院有限公司 | Slice ice maker and heat pump heating system thereof |
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| JPS5880498A (en) * | 1981-11-06 | 1983-05-14 | Hitachi Ltd | Thawing method of frozen heat transfer medium |
| CN1800749A (en) * | 2006-01-12 | 2006-07-12 | 哈尔滨工业大学 | solidification latent heat type heat pump utilizing low-level heat source water supply sensible heat to defrost |
| CN1800746A (en) * | 2006-01-12 | 2006-07-12 | 哈尔滨工业大学 | Collection device for cold water solidification heat |
| CN2805665Y (en) * | 2005-07-07 | 2006-08-16 | 陈振圳 | Vehicular ice-melting water wiper |
| CN201724490U (en) * | 2010-06-24 | 2011-01-26 | 上海弗格森制冷设备有限公司 | Tubular ice-making machine |
| CN104197749A (en) * | 2014-09-04 | 2014-12-10 | 哈尔滨工业大学 | Cold water freezing latent heat extraction device based on outside-tube continuous mechanical ice scraping |
-
2016
- 2016-12-31 CN CN201611267862.6A patent/CN106679477A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5880498A (en) * | 1981-11-06 | 1983-05-14 | Hitachi Ltd | Thawing method of frozen heat transfer medium |
| CN2805665Y (en) * | 2005-07-07 | 2006-08-16 | 陈振圳 | Vehicular ice-melting water wiper |
| CN1800749A (en) * | 2006-01-12 | 2006-07-12 | 哈尔滨工业大学 | solidification latent heat type heat pump utilizing low-level heat source water supply sensible heat to defrost |
| CN1800746A (en) * | 2006-01-12 | 2006-07-12 | 哈尔滨工业大学 | Collection device for cold water solidification heat |
| CN201724490U (en) * | 2010-06-24 | 2011-01-26 | 上海弗格森制冷设备有限公司 | Tubular ice-making machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088119A (en) * | 2018-01-09 | 2018-05-29 | 青岛科创蓝新能源股份有限公司 | A kind of cold water phase-change energy heat pump ice discharge apparatus and system |
| CN109579603A (en) * | 2018-12-28 | 2019-04-05 | 杨胜东 | A kind of heat-exchanger rig extracting cold water solidification heat |
| CN111947364A (en) * | 2020-09-15 | 2020-11-17 | 中交第四航务工程勘察设计院有限公司 | Slice ice maker and heat pump heating system thereof |
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