CN211476185U - Ice storage water tank based on flat heat pipe - Google Patents
Ice storage water tank based on flat heat pipe Download PDFInfo
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- CN211476185U CN211476185U CN201921641216.0U CN201921641216U CN211476185U CN 211476185 U CN211476185 U CN 211476185U CN 201921641216 U CN201921641216 U CN 201921641216U CN 211476185 U CN211476185 U CN 211476185U
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- 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 utility model relates to an ice storage water tank based on a flat heat pipe, which comprises a water tank shell and a heat exchange core body, the shell of the water tank is enclosed into a closed structure, the heat exchange core body is positioned in the shell, an ice storage working medium storage space is arranged between the heat exchange core body and the shell, the heat exchange core body comprises a plurality of ice storage units which are connected in series, each ice storage unit comprises a flat heat pipe, the two sides of the flat heat pipe are tightly attached to the finned pipe, the flat heat pipe is slightly longer than the finned pipe and is attached to the flat water pipe at the position longer than the finned pipe, the flat water pipes which are connected in parallel are converged to the main pipe, the main pipe comprises two inlets and two outlets to form a whole with two inlets and two outlets, the flat water pipe and the main pipe flow circulating working medium/refrigerating medium, one path of the main pipe is used for connecting the ice making and cold storage of the night unit, and the other path of the main pipe is used for melting ice and supplying cold in the daytime and/or supplying cold jointly. The water tank can meet the heat preservation of ice storage working medium and has the functions of seepage prevention and corrosion prevention.
Description
Technical Field
The utility model relates to a heating and refrigerating technology field, concretely relates to ice storage water tank based on flat heat pipe.
Background
Since ancient times, people have become aware of storing winter natural ice for refrigerating foods and improving the environment. Cold accumulation air conditioners adopting artificial refrigeration are around 1930. The cold accumulation air conditioner technology is started in the 70 th century, and is popularized and improved after the 80 th century. Since the taiwan province introduces ice storage and control equipment from abroad in 1984, the first ice storage air-conditioning system in taiwan is built, and the development of the ice storage air-conditioning system is fast. The ice storage equipment is used as a core component of an ice storage system, the research of developed western countries is early, the research on the ice storage equipment is continuous and deep, and the produced ice storage equipment is also diversified. In China, most of the research on ice storage equipment is still in a theoretical stage, and some manufacturers have ways of introducing, digesting and absorbing foreign ice storage equipment and do not have independent intellectual property rights. And because the machining capability of China is different from that of foreign countries, domestic manufacturers often adopt a manual machining mode, so that the cost of producing ice storage equipment is increased, and the performance of the ice storage equipment is not as good as that of foreign products.
The ice cold storage air conditioner adopts an electric refrigerator for refrigeration in a night electricity utilization valley period with low power load, stores cold energy in a certain mode by utilizing phase change latent heat of ice and water sensible heat with certain temperature difference, and releases the stored cold energy in a daytime with high power load, namely in an electricity utilization peak period, so as to meet the requirements of air conditioners or production processes of buildings. Therefore, most of the electricity consumption of the refrigeration system occurs in the low-valley period at night, and only auxiliary equipment with less energy consumption operates in the peak period of the electricity consumption in the daytime, so that the effect of balancing the load of a power grid by shifting peaks and filling valleys can be achieved.
The existing students research the household type ice cold accumulation system, the experiment adopts a household type central air conditioner produced by a certain company, and the cold accumulation system is added to realize three operation modes of ice making cold accumulation, ice melting cold supply and cold machine independent cold supply. Researches find that the scheme of directly evaporating a refrigerant to make ice and store cold, internally melting ice and taking cold and supercooling with large temperature difference is adopted, and the ice storage technology is effectively applied to small air-conditioning equipment such as a household air conditioner and the like. But because this system adopts the refrigerant direct evaporation system ice cold-storage, lead to the system refrigerant volume of filling big, inconvenient maintenance, the evaporating coil kneck reveals easily, has great potential safety hazard.
The prior scholars research novel vertical packaging plate ice storage equipment, and change the prior flat plate type ice storage equipment into a vertical type ice storage equipment, so that an air layer is concentrated in a smaller space above, and the influence of the air layer on heat exchange is reduced. However, the plastic is used as a packaging material, the heat conductivity coefficient is not high, and the plate thickness is thick, so that the heat exchange performance is rapidly deteriorated in the later stage of ice making and cold accumulation, and the heat exchange thermal resistance is large.
An existing external ice melting type system is also called a direct evaporation type ice storage system or a refrigerant coil type ice storage system, and an evaporator of a refrigerating system of the system is directly placed in an ice storage tank. When cold accumulation is carried out, the refrigerant flows through the evaporator coil pipe, and the outer surface of the coil pipe is frozen. When the air conditioner is in cold release, the chilled water flowing back from the air conditioner or the process equipment enters the ice storage tank, the ice on the outer surface of the evaporation coil is melted into chilled water with lower temperature, and the chilled water is sent to the air conditioner system through the heat exchange equipment.
An internal ice melting system is also a completely freezing ice storage system, and is a heat exchange device formed by a coil immersed in a storage tank filled with water. When the water is filled for cooling, the low-temperature glycol water solution (or called secondary refrigerant) produced by the water chilling unit enters the coil pipe for circulation, so that the water outside the pipe is frozen (the water in the ice storage tank can be completely frozen). When the cooling is performed, the glycol solution with higher temperature which flows back from the load end of the air conditioner also enters the coil pipe for circulation, and the ice on the outer surface of the coil pipe is gradually melted; meanwhile, the temperature of the glycol aqueous solution is reduced, and the glycol aqueous solution is supplied to the user again. The system has the advantages of low failure rate, high ice storage rate, easy maintenance due to the adoption of steel pipes or plastic pipes, small capacity, high flow rate, good heat transfer due to the fact that the glycol solution is in the pipes, small possibility of leakage, small storage tank volume and the like, but the thermal efficiency is low due to the fact that the system needs low cold storage temperature and supplies air conditioning load through a heat exchanger.
There is a packaged ice thermal storage system in which a thermal storage medium is packaged in small spherical or plate-shaped containers, and a plurality of such small containers are densely stacked in a sealed can or an open tank, thereby forming a packaged thermal storage device. The pressure type storage tank can be designed into vertical or horizontal various specifications according to different building sites, can also be arranged indoors and outdoors, saves floor area under the ground or on a roof, and even can be used as a building ornament.
SUMMERY OF THE UTILITY MODEL
To prior art's defect, the utility model provides an ice storage water tank based on dull and stereotyped heat pipe to solve the big and ice storage later stage ice formation thickening of the big and ice storage working medium of the upper and lower difference in temperature in the current ice storage device and lead to the problem that the heat transfer performance of ice storage equipment worsens sharply.
The technical scheme of the utility model:
an ice storage water tank based on a flat heat pipe is characterized by comprising a water tank shell and a heat exchange core body, wherein the water tank shell is enclosed into a closed structure, the heat exchange core body is positioned in the shell, an ice storage working medium space is arranged between the heat exchange core body and the shell,
the heat exchange core body comprises a plurality of serially connected ice storage units, each ice storage unit comprises flat heat pipes, finned pipes are tightly attached to two sides of each flat heat pipe, the flat heat pipes are slightly longer than the finned pipes and flat water pipes attached to the positions of the finned pipes and connected in parallel with each other, the flat water pipes converge on a main pipe, the main pipe comprises two inlets and two outlets to form a whole with two inlets and two outlets, circulating working media/secondary refrigerant flows in the flat water pipes and the main pipe, the main pipe is used for being connected with a night unit for ice making and cold storage, and the other main pipe is used for ice melting and cold supply in daytime and/or combined cold supply.
The ice storage units are divided into a plurality of groups, each group comprises a plurality of ice storage units and is connected in series through one flat water pipe at the upper end and one flat water pipe at the lower end, and the groups are arranged in parallel through a plurality of flat water pipes. The specific connection mode is as follows: each ice storage unit comprises a flat heat pipe, two finned pipes and two flat water pipes, wherein the flat heat pipes in each group are connected in series through the flat water pipes at the upper end and the lower end, and the flat water pipes are connected in parallel and converge through the round main pipes at the two sides.
The ice storage units are uniformly distributed in the water tank shell, and the upper end and the lower end of the flat heat pipe are tightly attached to the cold fluid flat water pipe channel and the hot fluid flat water pipe channel respectively.
The flat water pipe is a multi-channel flat water pipe.
The finned tubes are rectangular finned tubes, each rectangular finned tube comprises a plurality of rectangular channels, and two ends of each finned tube are not sealed.
The attaching is welding or bonding of heat conducting media.
The ice storage working medium is tap water or other substances capable of condensing, releasing heat and freezing.
The utility model has the advantages of:
the utility model discloses an ice storage water tank based on dull and stereotyped heat pipe, water tank shell are used for holding heat transfer core and storage ice storage working medium, satisfy the heat preservation of ice storage working medium, have prevention of seepage anticorrosion function simultaneously. The heat exchange core body comprises a plurality of serially connected ice storage units, each heat storage unit comprises a flat heat pipe and a fluid channel communicated with an external circulating working medium/secondary refrigerant, the heat exchange core bodies are connected in parallel through the multi-channel flat water pipe circulation channels and converged on the round main pipe to form a whole with two inlets and two outlets, one of the two inlets and the two outlets is used for ice making and cold storage of the unit at night, and the other inlet and the two outlets are used for ice melting and cold supply in the daytime and combined cold supply. The flat water pipe and the main pipe of the heat exchange core body are internally circulated with refrigerant media (secondary refrigerant) which flow in the same way.
And during ice storage, the low-temperature secondary refrigerant enters the cold fluid flat water pipe channel, and the cold fluid channel and the flat heat pipe exchange heat. The gas working medium in the condensation end of the flat heat pipe is cooled to release heat and condense into liquid, the liquid working medium returns to the evaporation end through the micro-channel, the liquid working medium in the evaporation end exchanges heat with ice storage working medium with high temperature outside the heat pipe, such as water, and absorbs the heat of the water to vaporize into gas working medium, the gas working medium flows upwards under the action of pressure difference to continue condensing, and the heat pipe works all the time. At the same time, the water outside the heat pipe loses heat all the time, and the temperature is reduced all the time until the water freezes. The flat heat pipe has good temperature equalizing performance, the temperature difference between the upper part and the lower part of an ice storage working medium in the ice storage water tank is small, and meanwhile, the thickest part of an ice layer at the later stage of ice storage is only the thickness of a pore passage of the rectangular finned tube due to the limiting effect of the rectangular finned tube tightly attached to the two sides of the flat heat pipe. When the ice storage water tank melts ice, the high-temperature secondary refrigerant enters the hot fluid flat water pipe channel, and the hot fluid channel exchanges heat with the flat heat pipe. The liquid working medium in the evaporation end of the flat heat pipe absorbs heat and is vaporized into gas working medium, the gas working medium flows upwards to exchange heat with ice outside the heat pipe, the gas working medium releases heat and is condensed into liquid working medium, the liquid working medium returns to the evaporation end through the micro-channel, and the heat pipe works all the time. And meanwhile, the ice outside the flat plate heat pipe absorbs heat and melts until the water in the ice storage water tank is melted completely.
The volume of the ice storage water tank and the size of the heat exchange core body are matched according to the cold load of a user, the icing thickness of the heat exchange core body can be controlled without an additional control system in the later stage of cold accumulation, and the heat exchange performance of the heat exchange core body is stable in the whole cold accumulation process.
The multi-channel flat water pipe is tightly attached to the upper end and the lower end of the heat pipe of the ice storage unit, and the attachment can be achieved through welding or bonding of a heat-conducting medium.
The round main pipe is used as a main pipe of the water inlet and outlet tank, and the circulating working media (secondary refrigerant) in the flat water pipes are converged.
The ice storage working medium is tap water or other substances capable of condensing, releasing heat and freezing.
The ice storage unit comprises a flat heat pipe, the two sides of the flat heat pipe are tightly attached to (welded or bonded by a heat conducting medium) finned pipes, the flat heat pipe is slightly longer than the rectangular finned pipes on the two sides, the length of the flat heat pipe and the two ends of the rectangular finned pipes are tightly attached to (welded or bonded by the heat conducting medium) a multi-channel flat water pipe, the ice storage unit is uniformly distributed in the ice storage water tank, and the uniform stress of the water tank shell can be ensured when ice storage working medium is condensed; the upper part and the lower part of the flat heat pipe are tightly attached to the cold fluid channel and the hot fluid channel.
Each of the rectangular finned tubes comprises a certain number of rectangular channels, and two ends of each finned tube are not sealed.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an ice storage water tank based on a flat heat pipe according to the present invention;
FIG. 2 is a front view of an ice storage unit in the ice storage water tank;
FIG. 3 is a top plan view of an ice storage unit in the ice storage water tank;
FIG. 4 is a schematic view of the ice storage unit attached to a flat water pipe.
Reference numerals: the heat exchange device comprises a water tank shell 1, a heat exchange core 2, an ice storage unit 21, an ice storage working medium space 3, a first inlet 4, a second inlet 5, a first outlet 6, a second outlet 7, a flat water pipe 8, a round dry pipe 9, a flat heat pipe 10 and a finned pipe 11.
Detailed Description
For a detailed description of the present invention, reference will now be made to figures 1-4 and the accompanying detailed description of the preferred embodiments.
As shown in fig. 1-4, the ice storage water tank based on the flat heat pipe in this embodiment includes a water tank shell 1 and a heat exchange core 2, the water tank shell 1 encloses a closed structure to surround the heat exchange core 2, an ice storage working medium space 3 is between the heat exchange core and the shell for accommodating an ice storage working medium, and the ice storage working medium is tap water or other substances capable of condensing, releasing heat and freezing. The heat exchange core body 2 comprises a plurality of ice storage units 21 which are connected in series, the ice storage units 21 comprise flat heat pipes 10, the two sides of the flat heat pipe 10 are tightly attached to the finned tube 11, the flat heat pipe 10 is slightly longer than the finned tube 11, the flat heat pipe 10 is attached to the flat water pipe 8 at the position longer than the finned tube 11, the flat water pipes 8 which are connected in parallel are converged on two round main pipes 9, the circular main pipe 9 comprises two inlets, namely a first inlet 4 and a second inlet 5, and two outlets, namely a first outlet 6 and a second outlet 7, which form a whole with two inlets and two outlets, circulating working medium/secondary refrigerant flows in the flat water pipe 8 and the round main pipe 9, one path of the round main pipe 9 is used for connecting the night machine set for ice making and cold storage through the first inlet 4 and the first outlet 6, and the other path of the round main pipe 9 is used for ice melting and cold supply in daytime and/or combined cold supply through the first inlet 5 and the first outlet 7.
The ice storage units 21 are uniformly distributed in the water tank shell 1, the ice storage units are divided into multiple groups, each group comprises multiple ice storage units 21 and is connected in series through one flat water pipe 8, and the groups are arranged in parallel through the flat water pipes 8. The specific connection mode is as follows: each ice storage unit 21 comprises a flat heat pipe 10, two finned pipes 11 and two flat water pipes 8, wherein the flat heat pipes 10 of each group are connected in series through the flat water pipes 8 at the upper end and the lower end, the flat water pipes 8 are connected in parallel, and the water is converged through the round main pipes 9 at the two sides. The flat water pipe 8 is a multi-channel flat water pipe; each finned tube 11 comprises a plurality of rectangular channels, and the two ends of the finned tube 11 are not sealed. The upper end and the lower section of the flat heat pipe 10 are respectively and tightly attached to the cold fluid flat water pipe channel and the hot fluid flat water pipe channel. The attaching is welding or bonding of heat conducting media.
The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes and the like that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An ice storage water tank based on a flat heat pipe is characterized by comprising a water tank shell and a heat exchange core body, wherein the water tank shell is enclosed into a closed structure, the heat exchange core body is positioned in the shell, an ice storage working medium space is arranged between the heat exchange core body and the shell and is used for containing ice storage working medium,
the heat exchange core body comprises a plurality of serially connected ice storage units, each ice storage unit comprises flat heat pipes, finned pipes are tightly attached to two sides of each flat heat pipe, the flat heat pipes are slightly longer than the finned pipes and flat water pipes attached to the positions of the finned pipes and connected in parallel with each other, the flat water pipes converge on a main pipe, the main pipe comprises two inlets and two outlets to form a whole with two inlets and two outlets, circulating working media/secondary refrigerant flows in the flat water pipes and the main pipe, the main pipe is used for being connected with a night unit for ice making and cold storage, and the other main pipe is used for ice melting and cold supply in daytime and/or combined cold supply.
2. The flat heat pipe-based ice storage water tank as claimed in claim 1, wherein the ice storage units are divided into a plurality of groups, each group comprises a plurality of ice storage units and is connected in series through a flat water pipe at the upper end and the lower end, and the groups are arranged in parallel through a plurality of flat water pipes.
3. The ice-storage water tank based on flat heat pipes as claimed in claim 2, wherein each ice-storage unit comprises a flat heat pipe, two finned pipes and two flat water pipes, the flat heat pipes in each group are connected in series through the flat water pipes at the upper and lower ends, and the flat water pipes are connected in parallel and converged through the round main pipes at the two sides.
4. The ice-storage water tank based on the flat heat pipe as claimed in claim 1, wherein the ice-storage units are uniformly distributed in the water tank shell, and the upper end and the lower end of the flat heat pipe are respectively closely attached to the flat cold fluid water pipe channel and the flat hot fluid water pipe channel.
5. The flat heat pipe-based ice-storage water tank as claimed in claim 1, wherein said flat water pipe is a multi-channel flat water pipe.
6. The flat heat pipe-based ice storage water tank as claimed in claim 1, wherein the finned tubes are rectangular finned tubes each comprising a plurality of rectangular channels, the finned tubes being unsealed at both ends.
7. The flat heat pipe based ice storage water tank as claimed in claim 1, wherein said bonding is welding or heat conducting medium bonding.
8. The ice-storage water tank based on the flat heat pipe as claimed in claim 1, wherein the ice-storage working medium is tap water or other substances capable of condensing, releasing heat and freezing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921641216.0U CN211476185U (en) | 2019-09-29 | 2019-09-29 | Ice storage water tank based on flat heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921641216.0U CN211476185U (en) | 2019-09-29 | 2019-09-29 | Ice storage water tank based on flat heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211476185U true CN211476185U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921641216.0U Active CN211476185U (en) | 2019-09-29 | 2019-09-29 | Ice storage water tank based on flat heat pipe |
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| CN (1) | CN211476185U (en) |
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2019
- 2019-09-29 CN CN201921641216.0U patent/CN211476185U/en active Active
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