CN211977299U - Injection type artificial snow making refrigeration cold accumulation system - Google Patents
Injection type artificial snow making refrigeration cold accumulation system Download PDFInfo
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- CN211977299U CN211977299U CN201821300471.4U CN201821300471U CN211977299U CN 211977299 U CN211977299 U CN 211977299U CN 201821300471 U CN201821300471 U CN 201821300471U CN 211977299 U CN211977299 U CN 211977299U
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Abstract
The utility model discloses an artifical snow making refrigeration cold-storage system of injection formula, including air cleaner, compressor, heat exchanger, sprayer, separator, cold-storage chamber, dehumidifier, the heat exchanger that releases cold, hot water storage tank. The utility model discloses a small amount of electric drive compressor of injection refrigeration cold-storage system consumption, but the by-product life hot water when externally providing cold volume transfers the life hot water to the heat of water (ice) in with the cold-storage pond through injecting the injection system.
Description
Technical Field
The utility model relates to a refrigeration cold-storage system.
Background
The traditional cold accumulation is mainly divided into ice cold accumulation and water cold accumulation according to cold accumulation media, wherein the water cold accumulation mainly accumulates and releases cold energy in the form of temperature difference of water and is sensible heat cold accumulation, and the cold accumulation density is only 2-3.5 RTh/m3(ii) a The ice cold accumulation is mainly used for storing or releasing cold energy in the form of ice water phase change and is latent heat cold accumulation, and the cold accumulation density can reach 10-14 RTh/m3. The main stream of cold accumulation is mainly ice cold accumulation because the cold accumulation density of the water cold accumulation is small. Static ice storage has high thermal resistance in the ice making process, small specific surface area and low speed in the ice melting process; the dynamic ice cold accumulation has the defects of poor operation stability, complex refrigeration cold accumulation equipment, high investment and the like.
The dynamic ice cold storage system in the market at present mainly comprises a refrigerating unit, an ice making unit, an ice storage tank, a cold releasing plate replacing unit (ice melting plate replacing unit) and the like. Wherein, the refrigerating and ice-making machine set (or the double-working condition machine set) has complex structure, higher investment and large occupied area; the ice making working condition needs to use ethylene glycol (or ethylene glycol-like) refrigerant, so that the initial investment and the leakage danger are increased, the efficiency of the refrigeration host machine is about 60-70% of the working condition of the air conditioner in the cold storage mode, the efficiency attenuation is large, the heat removed by refrigeration is generally converted into waste heat to be released to the environment, and the urban heat island effect is intensified.
SUMMERY OF THE UTILITY MODEL
The utility model provides a simple structure, operation are stable, the efficient developments refrigeration cold-storage system of cold release.
The utility model provides a technical scheme is:
an injection type artificial snow making refrigeration cold accumulation system comprises
(1) Air filter
Firstly, a renewable molecular sieve air filter is adopted, air directly sucked into the atmosphere is used as a working medium raw material, and the filtered air enters a compressor;
(2) compressor with a compressor housing having a plurality of compressor blades
Providing negative pressure for air suction of the air filter, providing pressure for working fluid in the injection process and by-producing domestic hot water;
firstly, compressing the purified air;
secondly, indirectly exchanging heat with tap water to cool the unit, and cooling the compressed air to 15-18 ℃;
③ domestic hot water is produced as a byproduct;
fourthly, the cooled air enters a heat exchanger, and the by-product domestic hot water enters a heat storage water tank;
(3) heat exchanger
Firstly, further cooling air compressed by a compressor by using cold water in a cold storage chamber to reduce the temperature of the air to 0.5-2 ℃, wherein the highest temperature of a non-original normal working condition is less than or equal to 4 ℃;
secondly, the cooled air is used as working fluid to enter an ejector;
when the vehicle is originally driven, cooling is a process of gradually accumulating cold energy, and the temperature of cold water and air is gradually reduced to zero through circulation;
fourthly, the cold water after heat exchange flows back to the cold accumulation chamber and is uniformly sprinkled on the ice layer floating in the cold accumulation chamber by a liquid distributor;
(4) ejector
Firstly, taking low-temperature, dry and pressurized air cooled by a heat exchanger as working fluid, and sucking injection fluid through an ejector;
secondly, cold water from a cold water layer of the cold storage chamber is used as injection fluid;
after the air is sprayed out through a nozzle of the receiving chamber of the sprayer, cold water is sucked into the receiving chamber and atomized, and the air and the atomized cold water sequentially enter a mixing chamber and a diffusion chamber of the sprayer;
fourthly, after the low-temperature dry pressurized air is decompressed through a nozzle, the low-temperature dry pressurized air absorbs atomized cold water to be gasified to form steam, and the steam reaches a near-saturation state;
part of the atomized cold water is gasified into steam which is taken away by air, and the heat absorbed by the phase change in the gasification process leaves the cold storage chamber along with the air to finish refrigeration;
sixthly, the latent heat of phase change in the gasification process is provided by the residual liquid, after the heat is transferred, the liquid is locally supercooled, and supercooled atomized water is solidified into ice crystals by taking particles in the air as condensation nuclei to complete cold accumulation, snow making and haze removing;
seventhly, combining the atomized cold water which is not gasified and not solidified with the residual air dust to form liquid drops, and removing haze by rain;
allowing the mixed fluid to leave the ejector and enter a separator;
(5) separator
Performing gas-solid-liquid separation on the mixed fluid from the ejector by using a cyclone separator:
firstly, the separated moisture-containing air enters a dehumidifier;
secondly, the separated ice crystals and liquid drops fall into a floating ice layer of the cold storage chamber in a scattered manner;
(6) cold storage chamber
Firstly, an ejector and a separator are arranged in the upper space in the inner part and are embedded on the upper surface in the inner part;
the cold accumulation working medium of the cold accumulation layer is approximately layered up and down, the upper layer is an ice floating layer, the lower layer is a cold water layer, and the temperature is 0 ℃;
a lower cold water layer of the cold accumulation layer is provided with a filter screen for filtering ice by water;
(7) dehumidifier
Dehydrating and dehumidifying humid air flowing through a separator;
secondly, exhausting part of the dried haze-free air after dehumidification in a purge gas mode;
the other part of the pressurized dry clean air is recycled;
latent heat of liquefaction in the dehumidification process: most latent heat of liquefaction is taken away by air, heat carried by one part of air leaves the system in the form of purge gas, and heat carried by the other part of circularly used air is finally transferred into domestic hot water through a compression process; the residual latent heat of liquefaction is absorbed by the dehumidifier and the liquid water and is taken out of the system by introducing cooling water;
the low-temperature liquid water after being desorbed by the dehumidifier returns to the cold storage chamber and is uniformly sprinkled on the ice layer floating in the cold storage chamber through a liquid distributor;
(8) cooling heat exchanger
Pumping cold water in a cold water layer of the cold storage chamber into an energy release heat exchanger through a filter screen for heat exchange and then returning the cold water to a floating ice layer of the cold storage chamber;
cooling the cooling water introduced from the outside of the system to form chilled water for supplying cold to the outside;
(9) heat storage water tank
Caching domestic hot water which is a byproduct of a cooling compressor;
the heat storage and preservation function is arranged; domestic hot water is provided for the outside.
The utility model discloses mainly there is following advantage:
(1) fuse refrigerating unit and cold-storage system
Organically integrating a refrigerating unit with a cold accumulation unit:
firstly, the unit investment is reduced;
secondly, the process is compact and the stability is high;
the starting and stopping are convenient, the valley electricity at night can be fully utilized for refrigerating and cold storage, the operation cost is reduced, and the energy utilization condition of a power grid is optimized;
fourthly, the occupied area is saved;
low operation and maintenance cost.
(2) Refrigerant
The whole process takes direct water (including liquid water, ice and steam) as a refrigerant, and does not need to use an organic refrigerant:
firstly, the system investment is reduced;
indirect heat transfer of other refrigerants is not needed, the heat transfer temperature difference is reduced, and the system efficiency is improved;
the operation and maintenance are simple, organic refrigerants do not need to be supplemented, or the danger of refrigerant leakage is worried about.
(3) Snow making cold accumulation
The working medium material flow forms snow behind the ejector, ice crystals are formed behind the ejector, and the separated ice crystals are scattered into the ice storage liquid surface to form ice slurry (ice sand) instead of ice blocks:
the specific surface area is large, and the ice melting and cold releasing efficiency is high;
secondly, the dynamic ice cold storage temperature field is uniform, the temperature gradient is small, local supercooling cannot be formed, the requirement on materials is reduced, and the equipment investment is reduced;
the dynamic ice cold storage temperature field is uniform, and the operation is stable and high.
(4) Recycling of compressed air and refrigeration water
Firstly, the scale of an equipment installation compressor is reduced, and the investment is reduced;
the air purification, the air pressure relief and the refrigerating water cold running quantity during the operation are reduced, and the operation cost is reduced;
and thirdly, the cold releasing backwater and the jet refrigeration circulating water are directly contacted with an ice floating layer (ice sand/ice slurry/ice crystals), so that the ice melting and cold releasing thermal resistance is small, the temperature field is uniform, and the cold releasing efficiency is high.
(5) By-product domestic hot water
The heat of refrigeration transfer is fully utilized, waste is changed into valuable, and domestic hot water is a byproduct:
the refrigeration system does not need a cooling tower, reduces the occupied area and construction investment of the cooling tower, and avoids the influence of the cooling tower on the building appearance;
the heat generated by the refrigeration of the system is not discharged into the environment, so that the influence on the environment is reduced, and compared with the traditional mode, the urban heat island effect can be reduced;
and thirdly, changing waste into valuables, producing domestic hot water as a byproduct and reducing the investment and operation cost.
(6) Is helpful for treating haze
Firstly, air is used as a working medium, dust particles in the air are used as condensation nuclei of ice crystals to make snow, waste is changed into valuable, and haze is used for making snow;
secondly, before the air enters the compressor, the air needs to be adsorbed and filtered to remove the dust particles and volatile organic gases with enlarged particles in the air, so as to reduce the air suspended substances and VOC (volatile organic compounds) of the air;
and thirdly, the exhausted air which is finally recycled is clean haze-free air.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the injection type artificial snow making refrigeration cold accumulation system comprises
(1) Air filter
Adopting a reproducible molecular sieve air filter, directly sucking air in the atmosphere as a working medium raw material, and pressurizing the filtered air by a compressor:
firstly, the filtering efficiency of dust (more than 2 mu m) is more than or equal to 95 percent;
② removal of H2O、CO2、CxHyAnd the like VOC;
thirdly, the filtered air enters a compressor.
(2) Compressor with a compressor housing having a plurality of compressor blades
The core power device of the system provides negative pressure for air sucked by the filter, provides pressure for working fluid in the injection process, and produces domestic hot water as a byproduct.
Firstly, compressing the purified air (or air after circulating dehumidification) to 0.45 MPa;
secondly, indirectly exchanging heat with tap water to cool the unit, and cooling the compressed air (to 15-18 ℃);
③ byproduct domestic hot water (55 ℃ plus or minus 5 ℃);
fourthly, the cooled air enters a heat exchanger, and the by-product domestic hot water enters a heat storage water tank.
(3) Heat exchanger
The method comprises the following steps that firstly, cold water in a cold storage chamber is used for further cooling air compressed by a compressor, so that the temperature of the air is reduced to 0.5-2 ℃ (the highest temperature of a non-original driving normal working condition is less than or equal to 4 ℃);
secondly, the cooled air is used as working fluid to enter an ejector;
when the vehicle is originally driven, cooling is a process of gradually accumulating cold energy, and the temperature of cold water and air is gradually reduced to be close to zero through circulation;
fourthly, the cold water after heat exchange flows back to the cold storage chamber and is evenly sprinkled on the ice layer floating in the cold storage chamber by a liquid distributor.
(4) Ejector
The ejector (ejector) is a core device of the system, the working fluid in the ejection process is air, and the ejection fluid is cold water.
Firstly, taking low-temperature (0.5-2 ℃) and dry air with pressure (0.4MPa) cooled by a heat exchanger as working fluid, and sucking injection fluid through an ejector;
cold water (normal working condition is 0 ℃) from a cold water layer of the cold storage chamber is used as injection fluid;
after the air is sprayed out through a nozzle of the receiving chamber of the sprayer, cold water is sucked into the receiving chamber and atomized, and the air and the atomized cold water sequentially enter a mixing chamber and a diffusion chamber of the sprayer;
fourthly, after the low-temperature dry pressurized air is decompressed by a nozzle, the low-temperature dry pressurized air can absorb atomized cold water to be gasified to form steam, and the steam reaches a near-saturation state;
part of the atomized cold water is gasified into steam which is taken away by air, and the heat absorbed by the phase change in the gasification process leaves the cold storage chamber along with the air to finish refrigeration;
sixthly, the phase change latent heat in the gasification process is provided by the residual liquid, the heat is partially supercooled after being transferred, and supercooled atomized water is solidified into ice crystals (snowflakes) by taking particles (haze) in the air as condensation nuclei to complete cold storage, snow making and haze removing;
seventhly, combining the atomized cold water which is not gasified and not solidified with the residual air dust to form liquid drops, and removing haze by rain;
and the mixed fluid (containing ice crystals and liquid drops) leaves the ejector and then enters the separator.
(5) Separator
For the gas-solid (liquid) separation of the mixed fluid (containing ice crystals and liquid drops) from the ejector, a cyclone separator can be used:
firstly, the separated moisture-containing air enters a dehumidifier;
the separated ice crystals and liquid drops fall into a floating ice layer of the cold storage chamber in a scattered manner.
(6) Cold storage chamber
Firstly, an ejector and a separator are arranged in the upper space in the inner part and are embedded on the upper surface in the inner part;
the cold accumulation layer is used for accumulating cold working media (ice water mixture/ice slurry/ice sand) and roughly layered up and down, the upper layer is a floating ice layer, the lower layer is a cold water layer, and the temperature is 0 ℃;
and a filter screen is arranged on the lower layer (cold water layer) of the cold accumulation layer, and water and ice are filtered.
(7) Dehumidifier
Dehydrating and dehumidifying humid air flowing through a separator;
part of the dehumidified dry haze-free air is exhausted in the form of exhausted air, and the air is purified and haze-removed when the air enters and leaves the system;
the other part of the pressurized dry clean air is recycled, so that the introduced air quantity of the system is saved, and the compression work is saved; the filtering load of air filtering is reduced;
latent heat of liquefaction in the dehumidification process: most of the air is taken away (part of the heat carried by the air leaves the system in the form of exhausted air, and the other part of the heat carried by the recycled air is finally transferred to hot water in life through a compression process); the rest part is absorbed by the dehumidifier and the liquid water and is taken out of the system by introducing cooling water;
fifthly, the low-temperature liquid water after being desorbed by the dehumidifier returns to the cold storage chamber and is uniformly sprinkled on the ice layer floating in the cold storage chamber through a liquid distributor.
(8) Cooling heat exchanger
Pumping cold water in a cold water layer of the cold storage chamber into an energy release heat exchanger through a filter screen for heat exchange and then returning the cold water to a floating ice layer of the cold storage chamber;
cooling water introduced from the outside of the system to form chilled water for supplying cold to the outside.
(9) Heat storage water tank
Caching domestic hot water which is a byproduct of a cooling compressor;
secondly, the heat storage and preservation function is set; domestic hot water is provided for the outside.
Claims (1)
1. A jet type artificial snow making refrigeration cold accumulation system is characterized by comprising
(1) Air filter
Firstly, a renewable molecular sieve air filter is adopted, air directly sucked into the atmosphere is used as a working medium raw material, and the filtered air enters a compressor;
(2) compressor with a compressor housing having a plurality of compressor blades
Providing negative pressure for air suction of the air filter, providing pressure for working fluid in the injection process and by-producing domestic hot water;
(3) heat exchanger
(4) Ejector
(5) Separator
Performing gas-solid-liquid separation on the mixed fluid from the ejector by using a cyclone separator:
firstly, the separated moisture-containing air enters a dehumidifier;
secondly, the separated ice crystals and liquid drops fall into a floating ice layer of the cold storage chamber in a scattered manner;
(6) cold storage chamber
Firstly, an ejector and a separator are arranged in the upper space in the inner part and are embedded on the upper surface in the inner part;
the cold accumulation working medium of the cold accumulation layer is approximately layered up and down, the upper layer is an ice floating layer, the lower layer is a cold water layer, and the temperature is 0 ℃;
a lower cold water layer of the cold accumulation layer is provided with a filter screen for filtering ice by water;
(7) dehumidifier
(8) Cooling heat exchanger
Pumping cold water in a cold water layer of the cold storage chamber into an energy release heat exchanger through a filter screen for heat exchange and then returning the cold water to a floating ice layer of the cold storage chamber;
cooling the cooling water introduced from the outside of the system to form chilled water for supplying cold to the outside;
(9) heat storage water tank
Caching domestic hot water which is a byproduct of a cooling compressor;
secondly, the heat storage and preservation function is set; domestic hot water is provided for the outside;
the air filter is connected with the compressor, the compressor is connected with the heat storage water tank and the heat exchanger, the heat exchanger is connected with the ejector and the floating ice layer in the cold storage chamber, the ejector is connected with the separator, the separator is connected with the dehumidifier, the cold water layer in the cold storage chamber is connected with the cold release heat exchanger through the filter screen and the water pump, and the cold release heat exchanger is connected with the floating ice layer in the cold storage chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821300471.4U CN211977299U (en) | 2018-08-14 | 2018-08-14 | Injection type artificial snow making refrigeration cold accumulation system |
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| CN201821300471.4U CN211977299U (en) | 2018-08-14 | 2018-08-14 | Injection type artificial snow making refrigeration cold accumulation system |
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| CN211977299U true CN211977299U (en) | 2020-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084495A (en) * | 2018-08-14 | 2018-12-25 | 中节能城市节能研究院有限公司 | A kind of injecting type artificial snow refrigeration and cold accumulation system |
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2018
- 2018-08-14 CN CN201821300471.4U patent/CN211977299U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084495A (en) * | 2018-08-14 | 2018-12-25 | 中节能城市节能研究院有限公司 | A kind of injecting type artificial snow refrigeration and cold accumulation system |
| CN109084495B (en) * | 2018-08-14 | 2023-09-26 | 中节能城市节能研究院有限公司 | Jet type artificial snow refrigerating cold storage system |
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