CN113915699A - Compact cold accumulation device - Google Patents
Compact cold accumulation device Download PDFInfo
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- CN113915699A CN113915699A CN202111197590.8A CN202111197590A CN113915699A CN 113915699 A CN113915699 A CN 113915699A CN 202111197590 A CN202111197590 A CN 202111197590A CN 113915699 A CN113915699 A CN 113915699A
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- cold
- cold accumulation
- phase change
- secondary refrigerant
- accumulation
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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
- F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—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 cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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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
- F24F13/20—Casings or covers
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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
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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 invention relates to a compact cold accumulation device. The device takes water as a phase change cold accumulation medium and comprises a shell cavity, a plate type fin cold accumulation structure, a secondary refrigerant channel, a secondary refrigerant flow divider, a phase change cold accumulation medium, a spraying device, a temperature sensor and the like. The invention adopts water as a phase change cold accumulation medium and provides a cold source through a refrigerating unit or other cold supply devices. During cold accumulation, the low valley electricity can be utilized to reasonably regulate peak to convert the electric energy into cold energy. The low-temperature secondary refrigerant provided by the cold supply device enters the secondary refrigerant inlet, and is uniformly distributed to each heat exchange channel through the flow divider, so that the cold energy is conveyed to the cold accumulation medium. When releasing cold, high-temperature water is sprayed by the spraying device above to melt the cold storage medium, and meanwhile, the melted low-temperature water can be directly sent to the tail end of a user at the side of the building for cooling. The invention can effectively solve the problem of the overlapping of the peak heights of the building load and the power grid load, and can construct a compact, low-cost and high-efficiency building side cold accumulation device.
Description
Technical Field
The invention relates to the technical field of ice cold accumulation, in particular to a compact cold accumulation device.
Background
The energy consumption of the building air conditioner accounts for 40% -50% of the energy consumption of the building, under the policy of renewable energy power development, the development prospect of electric energy utilization facing the energy consumption of the building side is wide, but the energy consumption terminal usage of most buildings is mainly concentrated in one or two time periods every day, the air conditioner load is overlapped with the peak energy consumption of a power grid and the time period of high electricity price, and the peak load demand of the power grid and the energy consumption cost of the building are improved. The cold accumulation technology is applied as a powerful measure for load demand side peak clipping and valley filling, is an effective method for balancing the peak-valley load of the power grid, and has remarkable social and economic benefits. The existing cold accumulation device has the problems of low energy storage density, poor cold accumulation/release rate, low energy utilization efficiency and the like, and influences the application and development of peak regulation of the cold accumulation technology and load balance of a power grid.
Patent CN211400154U has designed a cold-storage device, can adjust the area of effluenting of water distribution hole according to actual demand, comes the velocity of outflow of control hot water and cold water distribution pipe in the jar body, improves the water distribution effect. However, the device adopts water as a cold accumulation medium, so that the energy storage density is low, and the cold quantity requirement on the building side is difficult to supply. Patent CN212657936U provides an electric cold storage type cooling device, which uses off-peak electricity to store cold energy in phase change material through a refrigerating unit, and introduces a heat energy driving type refrigerating machine to realize step utilization of energy, but the switching control between the internal working conditions of the device is complicated.
Disclosure of Invention
The invention aims to balance the peak-valley difference of a power grid, improve the load factor of the power grid, improve the utilization rate of electric energy and the running benefit of power generation equipment, relieve the tension of power production and supply and solve the problems of low energy storage density, single function, short running time, poor economy and the like of the traditional cold storage device, and provides a compact cold storage device.
The invention provides a compact cold accumulation device, which is based on a plate-type fin structure and takes water as a phase change cold accumulation medium, and the device comprises a shell cavity 1, a plate-type cold accumulation structure 2, a secondary refrigerant channel 3, a secondary refrigerant flow divider 4, a phase change cold accumulation medium 5, a spraying device 6, a temperature sensor 7 and the like.
The invention adopts the following technical scheme:
a compact cold accumulation device takes water as a phase change cold accumulation medium, and comprises a shell cavity 1, a plate type cold accumulation structure 2, a spraying device 6 and a temperature sensor 7.
The plate type cold accumulation structure 2 is positioned in the shell cavity 1. The plate type cold accumulation structure 2 comprises a secondary refrigerant channel 3, a secondary refrigerant flow divider 4, fins 8 and a phase change cold accumulation medium 5.
The single secondary refrigerant channel 3 corresponds to the upper secondary refrigerant flow divider 4 and the lower secondary refrigerant flow divider 4, and the inlet a 9 and the outlet a10 are connected with the secondary refrigerant flow dividers and are positioned at the same horizontal position; the fins 8 are uniformly arranged on two sides of the secondary refrigerant channel 3; the phase change cold accumulation medium 5 is positioned between the fins 8 and is positioned outside the secondary refrigerant channel 3 and the secondary refrigerant flow divider 4.
The spraying device 6 is positioned above the plate type cold accumulation structure. The temperature sensors 7 are uniformly distributed on the inner wall of the housing cavity 1. The outer wall of the housing cavity 1 comprises an inlet a 9, an outlet a10, an inlet b11, an outlet b12 and a heat-insulating layer, and the heat-insulating layer covers and is attached to the outer surface of the housing cavity.
In the present invention, the inlet a 9 is a low-temperature coolant inlet. The outlet a10 is a low temperature coolant outlet.
In the present invention, the inlet b11 is the phase change cold storage medium 5 inlet. The outlet b12 is the phase change cold storage medium 5 outlet.
The invention determines the size of the phase change area, the height of the fins, the space of the secondary refrigerant channel and other parameters of the plate type cold accumulation structure 2 in the device by the cold supply quantity required by the user at the building side. The plate type cold accumulation structure 2 of the invention adopts a series or parallel mode for the heat exchange flow mode of the secondary refrigerant inside.
The phase change cold accumulation medium 5 is water, a volume change space caused by water/ice phase change is reserved, the phase change cold accumulation medium 5 is filled in the whole plate type cold accumulation structure 2, but the cold accumulation device is not fully filled in the cold accumulation device; when the cold accumulation is not carried out and the phase change cold accumulation medium 5 is in a liquid phase, the water level of the medium is submerged at the uppermost part of the plate type cold accumulation structure.
The secondary refrigerant adopts glycol solution, and the external cold supply device provides low-temperature secondary refrigerant during cold accumulation, and the low-temperature secondary refrigerant is uniformly distributed to each heat transfer channel by the flow distribution device 4.
The plate type cold accumulation structure 2 is positioned in the device shell cavity 1 and keeps a distance with the shell cavity 1, so that a space for liquid to flow is kept between the periphery of the plate type cold accumulation structure 2 and the shell cavity 1; during cold accumulation, the phase change cold accumulation medium 5 absorbs cold energy to start to generate phase change solidification, when the periphery of the inner wall of the housing cavity 1 quickly reaches phase change temperature so as to generate phase change solidification, the temperature sensor 7 on the inner wall of the housing cavity 1 detects the temperature, and the cold accumulation is stopped when the temperature is lower than the phase change temperature, so that the periphery of the device is not completely frozen, and the phenomenon that the cold release speed is too slow and a permanent freezing area is possibly generated in the device is avoided;
the spraying device 6 of the invention is positioned above the plate type cold accumulation structure 2. Wherein the distance between the spraying device 6 and the plate type cold accumulation structure 2 is as follows: the space more than two times of phase change volume expansion caused by the actual cold storage amount in the device is used for ensuring that liquid sprayed by the spraying device 6 can fully flow into the plate type cold storage structure 2 during cold release, and the phase change cold storage medium 5 after the phase change cold storage in the device is finished fully exchanges heat to extract cold, so that the cold release rate is improved.
The plate type cold accumulation structure 2 of the invention is composed of plate type fin structures. The heat exchange process in the cold accumulation process can be enhanced by increasing the number of the fins or adjusting the height and other parameters of the fins, and the heat transfer rate in the phase change cold accumulation process is improved.
In summer, the low-valley electricity is utilized, the external cold supply device provides low-temperature secondary refrigerant as a cold source, and the water is used as a phase change cold accumulation medium to store cold energy, so that the cold accumulation amount meets the cold energy requirement of users at the building side during the peak electricity utilization period.
The outer wall of the housing cavity 1 is provided with the heat insulation layer, so that energy loss in the cold accumulation process and the cold storage process is avoided.
The scheme of the invention has the following advantages:
1. the compact cold accumulation device adopts the plate-type fin structure to strengthen the phase change heat transfer process in the cold accumulation/release process and improve the cold accumulation/release rate. Carry out the cold-storage when power consumption load is lower, give the building side cooling when the power consumption peak, effectively solve the problem of the coincidence of peak height of building load and electric wire netting load, reduce the building and use the energy cost. When the cold energy is extracted, the cold energy can be directly fed into the tail end of a user for cooling without adding an additional heat exchanger for extracting the cold energy, so that the utilization efficiency of the energy is improved.
2. Meanwhile, the internal heat transfer fluid heat exchange channel can operate in a series or parallel mode, so that the cold storage/release stability of the device is improved, and the energy utilization rate is improved; according to the requirement of cold supply quantity of users at the building side, the requirement of the cold storage quantity is met by adjusting structural parameters such as fins, channel intervals and the like in the cold storage unit or changing the number of cold storage structures, so that the cold storage unit has good adjustability and adaptability.
3. The invention is used as a latent heat cold accumulation device which takes water as a phase change cold accumulation medium in summer to supply cold for users at the building side; the domestic hot water heat storage device can be converted into a water sensible heat storage mode in winter, and domestic hot water is provided for users at the building side. Therefore, the invention can comprehensively reduce the capacity of the building side energy storage system and reduce the energy storage cost of the system.
Drawings
Fig. 1 is a schematic diagram of a compact cold storage device of the present invention.
Fig. 2 is a three-dimensional structural view of a compact cold storage device of the present invention.
In the figure: 1, a housing cavity; 2, a plate type cold accumulation structure; 3 a secondary refrigerant channel; 4, a secondary refrigerant flow divider; 5 phase change cold storage medium; 6, a spraying device; 7 a temperature sensor; 8 ribs; 9 inlet a; 10 outlet a; 11 inlet b; 12 outlet b.
The specific implementation mode is as follows:
the invention is realized by the following technical scheme.
As shown in the figure 1-2, the compact cold accumulation device takes water as a phase change cold accumulation medium and comprises a shell cavity 1, a plate type cold accumulation structure 2, a secondary refrigerant channel 3, a secondary refrigerant flow divider 4, a phase change cold accumulation medium 5, a spraying device 6, a temperature sensor 7 and the like.
The plate type cold accumulation structure 2 is positioned in the shell cavity 1, and the plate type cold accumulation structure 2 is composed of a secondary refrigerant channel 3, a secondary refrigerant flow divider 4, fins 8 and a phase change cold accumulation medium 5.
The single secondary refrigerant channel 3 corresponds to the upper secondary refrigerant flow divider 4 and the lower secondary refrigerant flow divider 4, and the inlet a 9 and the outlet a10 are connected with the secondary refrigerant flow dividers and are positioned at the same horizontal position; the fins 8 are uniformly arranged on two sides of the secondary refrigerant channel 3; the phase change cold accumulation medium 5 is positioned between the fins 8 and is positioned outside the secondary refrigerant channel 3 and the secondary refrigerant flow divider 4.
The spraying device 6 is positioned in the housing cavity 1. The spraying device 6 is positioned above the plate type cold accumulation structure 2, the temperature sensors 7 are uniformly distributed on the inner wall of the housing cavity 1, and the outer wall of the housing cavity 1 comprises an inlet a 9, an outlet a10, an inlet b11, an outlet b12 and a heat insulation layer; the inlet a 9 and the outlet a10 are connected with the coolant splitter 4 through the housing cavity 1, wherein the inlet a 9 is a coolant inlet located in the middle of the lower part of the right outer wall, the outlet a10 is a coolant outlet located in the middle of the upper part of the left outer wall, and the specific heights of the inlet a 9 and the outlet a10 are matched with the coolant splitter 4 in the plate-type cold accumulation structure 2. The inlet b11 and the outlet b12 are connected with the cavity of the shell, wherein the inlet b11 is a phase-change material inlet and is positioned in the middle of the upper part of the outer wall at the right side, and the specific position is the horizontal line below the spraying device; the outlet b12 is a phase change material outlet and is positioned at the middle of the bottom of the outer wall on the left side. The heat-insulating layer covers and is attached to the outer surface of the shell cavity. The heat-insulating layer is made of air-conditioning heat-insulating cotton, and can be made of glass wool products, foamed plastic products or rubber and plastic heat-insulating materials. When the cold storage device is used for cold storage, in a valley electricity stage, the external cold supply device is driven to provide low-temperature secondary refrigerant as a cold source, the cold source enters the secondary refrigerant flow divider 4 from the inlet a 9, then the secondary refrigerant is uniformly distributed to the secondary refrigerant flow passages 3 by the secondary refrigerant flow divider 4, the plate type cold storage structures 2 exchange heat with the internal phase change cold storage medium 5, the phase change cold storage medium 5 absorbs cold brought by the secondary refrigerant and stores the cold through phase change, the increased number of the plate type cold storage structures can be integrated through welding, and the low-temperature secondary refrigerant flows out from the outlet a10 after the heat exchange with each plate type cold storage structure 2 is finished and returns to the external cold supply device to complete circulation. The periphery of the plate type cold accumulation structure 2 and the shell cavity 1 keep a space for liquid to flow. During cold accumulation, the phase change cold accumulation medium 5 in the cold accumulation structure absorbs cold energy brought by low-temperature secondary refrigerant in the secondary refrigerant flow channel 3, phase change is started when the phase change temperature is reached, temperature drop and cold accumulation phase change are expanded outwards from the inside of the plate type cold accumulation structure 2, meanwhile, a temperature sensor 7 on the inner wall of the shell cavity 1 detects whether the temperature near the inner wall of the shell cavity 1 is lower than the phase change temperature, and when the temperature is lower than the phase change temperature, cold accumulation is stopped. The complete freezing of the periphery of the device is ensured, and the over-slow cooling speed and the possibility of generating a frozen area in the device are avoided. The low temperature coolant is typically a glycol solution.
The phase-change cold accumulation medium 5 with the temperature higher than the phase-change temperature is sprayed by the spraying device 6 during cold release, and directly contacts with the phase-change cold accumulation medium 5 after cold accumulation in the plate type cold accumulation structure is finished for heat exchange, the phase-change cold accumulation medium 5 sprayed by the spraying device 6 melts, accumulates and solidifies the phase-change cold accumulation medium 5, the melted phase-change cold accumulation medium 5 flows out from the outlet b12, cold energy is taken out from the cold accumulation device and is transmitted to the end of a user at the building side, and the cold energy is transmitted and then flows into the cold accumulation device from the inlet b11 to complete circulation.
When the plate type cold accumulation structure 2 and the shell cavity 1 are used for cold accumulation, extra phase change expansion spaces are reserved around the plate type cold accumulation structure 2 and the shell cavity 1, so that when cold is released, the phase change cold accumulation medium 5 in the plate type cold accumulation structure can continuously flow circularly around for heat exchange, meanwhile, the spraying device 6 above the plate type cold accumulation structure 2 can spray for heat exchange, cold energy flows into a user side from an outlet b12, and energy loss can be reduced by directly supplying cold; after the cold energy transmission is finished, the cold energy flows into the cold accumulation device through the inlet b11, and the processes of cold release and cold supply are continuously carried out until the requirements of the user side are met.
A volume change space caused by water/ice phase change is reserved, the phase change cold accumulation medium 5 is filled in the whole plate type cold accumulation structure 2, but the cold accumulation device is not fully filled in the whole plate type cold accumulation structure; when the cold storage is not performed and the phase change cold storage medium 5 is in a liquid phase, the water level thereof usually sinks above the uppermost portion of the plate type cold storage structure.
Spray set 6 be located plate-type cold-storage structure 2 top, wherein spray set 6 and plate-type cold-storage structure 2 distance between the two is: the space more than two times of phase change volume expansion caused by the actual cold storage amount in the device is used for ensuring that liquid sprayed by the spraying device 6 can fully flow into the plate type cold storage structure 2 during cold release, and the phase change cold storage medium 5 after the phase change cold storage in the device is finished fully exchanges heat to extract cold, so that the cold release rate is improved.
The phase change cold accumulation medium 5 adopts water as a cold accumulation medium, and the plate type cold accumulation structure 2 and the shell cavity 1 are metal structures adopting aluminum as materials.
The invention mainly comprises a plate type cold accumulation structure 2, can change the circulation mode of a flow channel, adopts the series or parallel mode operation, improves the cold accumulation/release stability of the device and improves the utilization rate of energy; according to the requirement of cold supply quantity of users at the building side, the requirement of the cold storage quantity is met by adjusting structural parameters such as fins and channel intervals in the cold storage unit or changing the number of the plate type cold storage structures 2, because the requirement degrees of the cold quantity required by the users are different, a certain cold storage quantity is selected, and the size of the parameter of the fins and the channel intervals is adjusted in the initial design stage of the cold storage device through numerical simulation, so that the cold storage/release time matching degree of the cold storage device is optimal; meanwhile, the quantity of the plate-type cold accumulation structures and the overall size of the shell cavity are determined by the cold accumulation quantity. The invention has good adjustability and adaptability.
In summer, the low-valley electricity is utilized, the external cold supply device provides low-temperature secondary refrigerant as a cold source, and the water is used as a phase change cold accumulation medium to store cold energy, so that the cold accumulation amount meets the cold energy requirement of users at the building side during the peak electricity utilization period. The device can be converted into a domestic hot water heat storage device in a water sensible heat storage mode in winter, and domestic hot water is provided for users at the building side. The capacity of the building side energy storage system can be comprehensively reduced, and the energy storage cost of the system can be reduced.
The cold accumulation device can balance the peak-valley difference of the power grid, improve the load factor of the power grid, improve the utilization rate of electric energy and the running benefit of power generation equipment, and relieve the tension of power production and supply and the problems of low energy storage density, single function, short running time, poor economy and the like of the traditional cold accumulation device.
The invention has not been described in detail and is part of the common general knowledge of a person skilled in the art. The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and the preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Various modifications and improvements of the technical solution of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solution of the present invention is to be covered by the protection scope defined by the claims.
Claims (10)
1. A compact cold storage device characterized by: the cold accumulation device comprises a shell cavity (1), a plate type cold accumulation structure (2), a spraying device (6) and a temperature sensor (7);
the plate type cold accumulation structure (2) is positioned in the shell cavity (1), and the plate type cold accumulation structure (2) comprises a secondary refrigerant channel (3), a secondary refrigerant flow divider (4), fins (8) and a phase change cold accumulation medium (5);
the single secondary refrigerant channel (3) corresponds to the upper secondary refrigerant shunt (4) and the lower secondary refrigerant shunt (4), and the inlet a (9) and the outlet a (10) are connected with the secondary refrigerant shunts and are positioned at the same horizontal position; the fins (8) are uniformly arranged on two sides of the secondary refrigerant channel (3); the phase change cold accumulation medium (5) is positioned between the fins (8) and is positioned outside the secondary refrigerant channel (3) and the secondary refrigerant flow divider (4);
the spraying device (6) is positioned above the plate type cold accumulation structure (2);
the temperature sensors (7) are uniformly distributed on the inner wall of the housing cavity (1);
the outer wall of the shell cavity (1) comprises an inlet a (9), an outlet a (10), an inlet b (11), an outlet b (12) and a heat-insulating layer, and the heat-insulating layer covers and is attached to the outer surface of the shell cavity.
2. The compact cold storage device of claim 1, wherein: a volume change space caused by water/ice phase change is reserved, the phase change cold accumulation medium (5) is filled in the whole plate type cold accumulation structure (2), but the cold accumulation device is not fully filled in the cold accumulation device; when the cold accumulation is not carried out and the phase change cold accumulation medium (5) is in a liquid phase, the water level of the medium is submerged at the uppermost part of the plate type cold accumulation structure (2).
3. The compact cold storage device of claim 1, wherein: when cold accumulation is carried out, an external refrigerating unit or an external cold supply device provides low-temperature secondary refrigerant, and cold energy is conveyed to a phase change cold accumulation medium (5) in the cold accumulation device; the low-temperature secondary refrigerant adopts glycol solution.
4. The compact cold storage device of claim 1, wherein: when releasing cold, the spraying device (6) sprays the phase change cold accumulation medium (5) with the temperature higher than the phase change temperature, and the phase change cold accumulation medium (5) exchanges heat with the phase change cold accumulation medium (5) after the cold accumulation in the device is finished, so that the phase change cold accumulation medium (5) in the device is melted, meanwhile, the cold energy flows out from the outlet b (12) along with the melted low-temperature water to supply the needed cold energy for users at the building side, and the cold energy flows back to the device from the inlet b (11) after the cold supply circulation at the tail end is finished.
5. The compact cold storage device of claim 1, wherein: a space for liquid to flow is kept between the periphery of the plate type cold accumulation structure (2) and the shell cavity (1); during cold accumulation, the phase change cold accumulation medium (5) absorbs cold energy to start phase change solidification, the temperature sensor (7) on the inner wall of the shell cavity (1) detects the temperature, and the cold accumulation is stopped when the temperature is lower than the phase change temperature.
6. The compact cold storage device of claim 1, wherein: the distance between the spraying device (6) and the plate type cold accumulation structure (2) is as follows: the phase change volume caused by the actual cold storage quantity in the device expands more than twice.
7. The compact cold storage device according to claim 1, characterized in that said plate cold storage structure (2) and housing cavity (1) are metallic structures using aluminum as material.
8. The compact cold storage device of claim 1, wherein: the device is used as a latent heat cold accumulation device taking water as a phase change cold accumulation medium in summer and is used as a domestic hot water heat accumulation device in a water sensible heat accumulation mode in winter.
9. The compact cold storage device of claim 1, wherein: the inlet a (9) is a low-temperature secondary refrigerant inlet, and the outlet a (10) is a low-temperature secondary refrigerant outlet.
10. The compact cold storage device of claim 1, wherein: the spraying device (6) is positioned in the shell cavity (1).
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| CN202111197590.8A CN113915699A (en) | 2021-10-14 | 2021-10-14 | Compact cold accumulation device |
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| CN202111197590.8A CN113915699A (en) | 2021-10-14 | 2021-10-14 | Compact cold accumulation device |
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| CN205505272U (en) * | 2016-04-18 | 2016-08-24 | 王言明 | Low ebb electricity heat accumulation cold -storage heat pump air conditioner |
| CN107621186A (en) * | 2017-10-19 | 2018-01-23 | 航天特种材料及工艺技术研究所 | A kind of hot water quickly cooling module and device based on phase-change material |
| KR20180080019A (en) * | 2017-01-03 | 2018-07-11 | 주식회사 엘지생활건강 | Apparatus of Cold and Hot Mat |
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2021
- 2021-10-14 CN CN202111197590.8A patent/CN113915699A/en active Pending
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|---|---|---|---|---|
| KR200242390Y1 (en) * | 2001-05-10 | 2001-10-15 | 주식회사 센추리 | Jet device for ice container |
| CN1731034A (en) * | 2005-08-23 | 2006-02-08 | 南京大学 | Phase-change cold-storage device for air conditioner |
| JP2008064372A (en) * | 2006-09-07 | 2008-03-21 | Kenji Umetsu | Heat exchanger type heat storage system |
| CN201110682Y (en) * | 2007-10-18 | 2008-09-03 | 重庆大学 | Fin tube ice cold accumulator |
| CN101532709A (en) * | 2008-03-14 | 2009-09-16 | 袁东立 | Ice-storage refrigeration device and ice-storage refrigeration system |
| CN205505272U (en) * | 2016-04-18 | 2016-08-24 | 王言明 | Low ebb electricity heat accumulation cold -storage heat pump air conditioner |
| KR20180080019A (en) * | 2017-01-03 | 2018-07-11 | 주식회사 엘지생활건강 | Apparatus of Cold and Hot Mat |
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