47results about How to "Improve cold storage efficiency" patented technology

The invention provides an active and passive combined annual phase-change energy storage room capable of being used all year around, wherein the energy storage room aims to enable a building applying phase-change materials to operate in an energy-saving mode, enable the wall body of the building to adjust the air in a room all year around and extract natural cooling capacity actively, improve the storage and efficiency, heat storage and discharge and heat storage efficiency and cooling efficiency of a phase-change wall board and improve the air quality in the room and the indoor comfort. The active and passive combined annual phase-change energy storage room capable of being used all year around comprises a roof lighting room body, a phase-change combined wall body, a water system and a ventilation system. The roof lighting room body comprises a wall body with the four light-proof faces and a light-transmitting roof for collecting light. The phase-change combined wall body comprises the phase-change wall board, mortar made of phase-change materials, a capillary network, a glass cover plate, an air flue and air inlet. The water system comprises a water cooling and heating device, a water storage device and a tail end device. The ventilation system comprises an air supply device, the air flue, the air opening and a corresponding sealing device. By means of the scheme, great significance is provided for increase of the utilization rate of new resources and the phase-change materials in the building.

The invention relates to a novel liquid air energy storage system using phase change energy storage. The novel liquid air energy storage system has two working states including energy storage and energy releasing; in the energy storage process, a compressor unit is driven by a driving unit, and is sequentially connected with a heat accumulator set, a regenerator, a liquid expansion machine, a gas-liquid separator and a liquid air storage tank; and in the energy releasing process, a cryogenic pump is sequentially connected with the regenerator, a vaporizer, the heat accumulator set and a main expansion machine set, the main expansion machine set drives a power generator, the cryogenic pump is connected with the liquid air storage tank, winding pipe type heat exchangers are adopted in the heat accumulator set and the regenerator, a phase change heat storage material is contained in a shell pass, and an intermediate medium vaporizer is adopted as the vaporizer. According to the novel liquid air energy storage system, the winding pipe type heat exchangers and the intermediate medium vaporizer are applied to the liquid air energy storage system, air is led into a pipe pass to exchange heat with the phase change heat storage material and a phase change cold storage material in the shell side, compressed heat and liquid air cold are stored by the phase change heat storage material and the phase change cold storage material correspondingly, circulated utilization of the heat and the cold is guaranteed, and the efficiency of the system is improved.

The invention relates to a water distribution device of a water cold accumulation system. The device comprises a cold accumulation tank, a first water distributor and a second water distributor, wherein the first water distributor and the second water distributor are respectively positioned at the top and the bottom of the cold accumulation tank; the first water distributor comprises a first water separation disc, a high-temperature water access pipe communicated with the first water separation disc, and first water distribution pipes; multiple first water distribution pipes are uniformly distributed around the first water separation disc in the peripheral direction, and are all provided with first scattering holes with upward openings; the second water distributor comprises a second water separation disc, a low-temperature water access pipe communicated with the second water separation disc, and second water distribution pipes; and multiple second water distribution pipes are uniformly distributed around the second water separation disc in the peripheral direction, and are all provided with second scattering holes with downward openings. In cold accumulation, cold water uniformly and stably flows into a low-temperature layer from the second scattering holes; and in cold release, hot water uniformly and stably flows into a high-temperature layer from the first scattering holes. The openings of the first scattering holes are upwards, and the openings of the second scattering holes are downwards, so that a thermocline is not directly impacted in water absorption and water drainage, and the cold accumulation efficiency is improved.

The invention provides a composition, a preparation method of a heat transfer medium, a phase-change refrigeration method of hydrate and a phase-change refrigeration system of the hydrate. The composition contains carbon dioxide and a refrigeration working medium; the refrigeration working medium contains water, an oil-based carrying solution, a hydrate accelerant and a slurry stabilizing agent, wherein the carbon dioxide is dissolved into water; the hydrate accelerant and the slurry stabilizing agent are dissolved into the oil-based carrying solution and / or the water. The composition providedby the invention has the advantages that continuous cold source supply of the nature is sufficiently utilized, properties of a hydrate generation manner of simplicity and high refrigeration and coldenergy accumulation are utilized and characteristics of low additional energy consumption, energy saving and environment protection, low operation cost and safety and reliability are utilized to simultaneously overcome the problem of cold energy utilization of seawater and underground water water-source heat pump in the prior art and the problem of pipeline blocking caused by hydrate agglomerationand sedimentation in a hydrate phase-change refrigeration cycle. The invention provides an effective way for realizing efficient and reasonable utilization of energy and actual utilization of hydratephase-change refrigeration, and has extremely great economic and social values.

The invention discloses a method for boosting crystallization of a phase-change cold-storing material of a eutectic salt solution. The method comprises the following steps: mixing 100 parts of eutectic salt solution with a mass concentration of 10-26.4% with 0.1-1.2 parts of magnetic metal nanometer particles or magnetic metal oxide nanometer particles, and then adding 0.2-0.6 parts of surface dispersing agent, and ultrasonically treating for more than 30 minutes, thereby obtaining a suspended low-temperature phase-change cold-storing material of the eutectic salt solution. An electromagnetic coil is uniformly wound on an outer wall around a cold-storing tank; a direct current is introduced; the direction of a generated magnetic field is opposite to the direction of gravity; and the strength of the magnetic field is adjusted by changing the size of a voltage. According to the method provided by the invention, the magnetic nanometer particles and the magnetic field effect are utilized to strengthen the heat-transfer characteristic of the traditional cold-storing material of the eutectic salt solution, the nucleating condensate depression is improved, the crystallizing time is shortened, the cold-storing efficiency is increased, and meanwhile, the volume of a heat exchanger is reduced.

Disclosed therein is an air conditioner for a vehicle, which includes an evaporator and a storage tank getting in surface contact with each other, thereby doubling a cold storage effect by directly transferring cold air of the evaporator to the storage tank in a cooling mode, maximizing the cold storage effect because condensate water generated from the surface of the evaporator additionally cools the surface of the storage tank, and effectively enhancing heat-exchanging performance without increasing capacity of the storage tank. The air conditioner further includes heat-exchanging means mounted inside the storage tank so as to enhance the heat exchange performance of a heat carrier more.

To provide air-conditioning system which can air-condition a room with low electric power regardless of day or night by cooling outside air by using natural energy and efficiently storing the coldness in a thermal storage material while cooling the room with the cooled outside air and whose construction cost is low. Air-conditioning system utilizing natural energy is characterized by comprising a thermal storage chamber (27) formed under the floor; an intake air storage section (4) provided adjacently to the thermal storage chamber (27); an intake pipe (5) connected to the intake air storage section (4) and adapted for sucking outside air; an outside air cooling mechanism for cooling the outside air sucked through the intake pipe by using natural energy; an outside air supply pipe (7) for introducing the outside air cooled by the outside air cooling mechanism into the thermal storage chamber (27); a blower (8) for feeding the outside air cooled by the outside air cooling mechanism into the outside air supply pipe (7); and thermal storage material (6) housed in the thermal storage chamber and adapted for storing or releasing the coldness, and characterized in that the average particle diameter of the thermal storage material (6) is largeras the depth from a bottom surface (7a) of the thermal storage chamber (27) to a floor surface (20) is greater.

The invention discloses a vehicle-mounted high-energy cold accumulation system. The vehicle-mounted high-energy cold accumulation system comprises an external cold accumulation unit and a carriage cold accumulation device, wherein the external cold accumulation unit comprises a refrigeration unit, a heat exchanger, a cold accumulation tank and water pumps; the refrigeration unit is coupled with the heat exchanger; the heat exchanger is coupled with the cold accumulation tank; an external guide pipe provided with a stop valve is arranged at each of the top and bottom end of the cold accumulation tank; the external guide pipes are connected with the low-temperature water pumps; the carriage cold accumulation device is mainly composed of a plurality of cold accumulation strips; the cold accumulation strips comprise top cold accumulation strips which are longitudinally mounted at the top in a carriage in parallel and side face cold accumulation strips which are arranged at the two sides in the carriage; a water discharging pipe is arranged at the front end of each cold accumulation strip. According to the vehicle-mounted high-energy cold accumulation system, the external cold accumulation unit and the carriage cold accumulation device are creatively mounted in a separated manner, so that the load of a vehicle is greatly relieved, an occupied space of the system is obviously reduced and the loading capacity of cargoes of a refrigerator car / freezer car is expanded. According to the energy-saving vehicle-mounted high-energy cold accumulation system, the cold accumulation adopts phase-change-free liquid-state cold accumulation liquid, the lower limiting value of temperature is low and the cold accumulation efficiency is high.

A carbon dioxide hydrate slurry cold storing and releasing central air conditioning unit comprises a compressor, a cooler, a heat regenerator, an air cooler, a valve, a circulating pump, an expansion machine and a hydration reaction kettle. The expansion machine is used for producing carbon dioxide gas to a carbon dioxide gas-liquid mixture through cooling and depressurization; the hydration reaction kettle is used for producing water and the carbon dioxide gas-liquid mixture to carbon dioxide hydrate slurry; the heat regenerator is communicated with the expansion machine; then the expansion machine is communicated with the hydration reaction kettle; an outlet of hydrate slurry of the hydration reaction kettle is communicated with an inlet of a fan coil of the air cooler through a control valve; an outlet of the fan coil of the air cooler is sequentially communicated with the circulating pump and a backflow inlet of the hydration reaction kettle; and a gas outlet of the hydration reaction kettle is sequentially communicated with the heat regenerator and a dryer and then communicated with an air suction port of the compressor.

The invention discloses an intelligent electric cold chain logistics vehicle and a use method thereof. The intelligent electric cold chain logistics vehicle is composed of a compartment heat preservation body, a compartment heat preservation door, a compartment liner, cold storage strips and a vehicle body. The compartment heat preservation body is connected with the vehicle body through adhesive and reinforcing parts. The compartment liner is mounted on the inner side of the compartment heat preservation body. A compartment temperature sensor used for detecting the temperature inside the compartment heat preservation body is mounted in the middle of the top of the compartment liner. An air supply outlet is formed in the portion above the front portion of the compartment liner, and an air return inlet is formed in the rear end of the bottom of the compartment liner. The front end of the compartment heat preservation body is provided with an air supply duct. A temperature and humidity sensor is arranged in the middle of the air supply duct. A circulation fan is mounted at the top of a front wallboard of the compartment heat preservation body. The cold storage strips are mounted on the portions below the bottom of the compartment liner in a multi-set parallel mode. A temperature controller and a humidity collector are mounted in a vehicle cab. The intelligent electric cold chain logistics vehicle is reasonable in design, low in vehicle load, high in cold storage efficiency, capable of being remotely and intelligently monitored and saving energy, environmentally friendly and high in economic benefit and social benefit.

The invention relates to the field of low temperature liquid air energy storage, in particular to a low temperature cold storage system and method. The low temperature cold storage system comprises a cold release heat exchanger, a cold storage heat exchanger, a fluid work medium storage device and a solid phase medium cold accumulator; solid phase media used for cold accumulation are contained in the solid phase medium cold accumulator; fluid work media used for heat exchange are contained in the fluid work medium storage device; the fluid work medium storage device, the solid phase medium cold accumulator and the cold release heat exchanger are sequentially connected through pipelines, and a cold release circulating channel is formed; and the solid phase medium cold accumulator, the fluid work medium storage device and the cold storage heat exchanger are sequentially connected through pipelines, and a cold storage circulating channel is formed. According to the low temperature cold storage system and method, the solid phase media are adopted for cold storage, the fluid work media are adopted as heat exchange media, the large temperature difference problem that air and cold storage media directly exchange heat at the initial stage is solved, the cold accumulation efficiency is improved, and the system cost is reduced.

The invention relates to a high-efficiency cold storage agent for a fresh cold chain, comprising the following components in percentage by weight: 0.1 to 3% of sodium carboxymethyl cellulose, 0.1 to 3% of anti-undercooling agent, 0.1 to 26% of energy storage agent, and the balance water. In the invention, the non-toxic, harmless and convenient inorganic salt is taken as a main component, an anti-undercooling agent is added to reduce the degree of undercooling, and also a phase separation preventing agent is added to stabilize the cold storage performance, thereby improving the cold storage efficiency and further reducing the use cost. The phase transition temperature of the obtained cold chain low-temperature cold storage agent is 0 DEG C or below, the cold storage agent has the advantagesof energy saving, safety and high efficiency, and can meet the temperature requirement of temperature-sensitive agricultural product cold chain logistics.

The invention relates to the technical field of cold accumulation equipment, in particular to a combined type regenerator and a liquid air energy storage system. The combined type regenerator comprises a first connecting main pipe, a second connecting main pipe and a plurality of cold accumulation tanks, all the cold accumulation tanks are separately connected with the first connecting main pipe through first connecting branch pipes, all the cold accumulation tanks are separately connected with the second connecting main pipe through second connecting branch pipes, all the cold accumulation tanks are connected in series through third connecting branch pipes, first control valves are separately arranged on positions, between every two adjacent first connecting branch pipes, of the first connecting main pipe, second control valves are separately arranged on the position, between every two adjacent second connecting branch pipes, of the second connecting main pipe, and third control valves are separately arranged on each third connecting branch pipe. According to the combined type regenerator and the liquid air energy storage system, independent or combined control can be carried outon each cold accumulation tank, modular flexible regulation and control on each cold accumulation tank are realized, different operation modes of series connection, parallel connection or series-parallel connection combination among the cold accumulation tanks can be realized, and the cold accumulation efficiency is improved.

The invention provides a liquefied air energy storage system adopting liquefied natural gas for cold storage. The liquefied air energy storage system comprises the liquefied air energy storage system, a natural gas pipeline network, a condensation evaporator, a liquefied natural gas expansion machine, a liquefied natural gas storage tank, a liquefied natural gas booster pump and a liquid air energy release power generation system, wherein the liquefied air energy storage system is used for converting air in the atmosphere into liquid air and recycling cold energy generated when the liquid air is gasified; a natural gas pipeline network; the condensation evaporator is used for exchanging heat in the liquid air gasification process and the high-pressure gaseous natural gas liquefaction process; the liquefied natural gas expansion machine is used for expanding the high-pressure liquefied natural gas from the condensation evaporator to low pressure and doing work to recover pressure energy; a liquefied natural gas storage tank; the liquefied natural gas booster pump is used for enabling the boosted liquefied natural gas to enter the liquefied air energy storage system and recycling the cold energy generated when the liquid air is gasified; and the liquid air energy release power generation system is used for heating the gaseous compressed air from the condensation evaporator and utilizing compressed air expansion to do work to generate power. The invention further provides a liquefied air energy storage method adopting the liquefied natural gas for cold storage.

The invention relates to a high-temperature phase-change cold storage device, and belongs to the technical field of phase-change cold storage. When a refrigerator works, a solenoid valve is switched off, a cooling agent evaporates in a shell-tube evaporator and absorbs heat to take away surrounding heat, and then refrigerating is achieved; and cooling agent gas generated after evaporation enters acompressor to be compressed, then condensed in a condenser and enters the shell-tube evaporator to achieve refrigerating after being dried and filtered through a drying and filtering device, and a cycle is formed. When the cold storage device works, the solenoid valve is switched on, a refrigerating agent enters an ice making device through the shell-tube evaporator, a part of the refrigerating agent enters a cold storage tank through a reverse osmosis membrane under the action of the reverse osmosis membrane and generates phase change in the cold storage tank to form ice slurry, water heatedby a heater enters a heat exchange coil pipe arranged in the cold storage device to achieve heat exchange with the ice slurry in the cold storage tank, and then refrigerating is achieved.

The invention provides a cryogenic liquefied air energy storage system and method. The cryogenic liquefied air energy storage system comprises a compression device, a liquefying and storage device, apressurizing device, a gasifying device, a cold storage device and an expanding and power generation device; the compression device, the liquefying and storage device, the pressurizing device, the gasifying device and the expanding and power generation device are connected sequentially; the gasifying device is connected with the liquefying and storage device through the cold storage device; and the cold storage device comprises a heat insulation shell and multiple cold storage tanks, the multiple cold storage tanks are located inside the heat insulation shell, the cold storage device adopts the compact structure, the cold storage tanks are filled with cold storage media, thus the cold storage efficiency is increased, and the occupied area is small. According to the system and the method, only one heat insulation shell is arranged, so that the contact area of the cold storage device with the outside is greatly reduced, heat exchange of the cold storage device with the outside is reduced, the energy loss is reduced, and the storage time of high-quality cold energy is prolonged. The cold storage device of the system is high in storage capacity, high in cold storage quality, easy to manufacture and mount and relatively low in relative investment, so that the economy of the system can be improved.

The invention discloses a method and device for partitioning and connecting fire-fighting pools used as cold storage pools, belonging to the application field of air-conditioning energy storage. In the present invention, a plurality of staggered upper circulation water-retaining partitions, lower circulation water-retaining partitions and partition baffles are vertically arranged in the fire-fighting pool, and the partition baffles and pool walls are used to divide the fire-fighting pool into water flow channels. The lower circulation water retaining baffles and the upper circulation water retaining baffles are alternately arranged in the channel; the plates are connected by partition connecting members, and the fire water opening and closing device is set near the bottom edge of the upper circulation water retaining baffles. Connection of fire water bodies. By adopting the technical solution of the present invention, the fire-fighting pool in the building can be effectively transformed into a cold-storage pool of the cold-storage air-conditioning system, which not only solves the problem of large thermoclinic layer and cold storage in the existing water-cooling technology that uses the fire-fighting pool as the cold storage pool. The mixing of hot water leads to the problem of low cold storage efficiency of the water cold storage system, and it also has the advantages of simple and fast on-site installation and good fire protection connection safety.

The invention discloses a mixed cold storage system based on liquid and solid-liquid working media. The system is used for low temperature liquid air energy storage and comprises multiple stages of liquid working medium cold storage modules, a solid-liquid phase change working medium cold storage module and gas heat exchange runners penetrating through the liquid working medium cold storage modules and the solid-liquid phase change working medium cold storage module, wherein each liquid working medium cold storage module comprises a cold storage and heat exchange unit, a cold release and heat exchange unit and at least two storage units used for storing liquid working media; the two storage units are respectively connected between the cold storage and heat exchange unit and the cold release and heat exchange unit to form a passage for the liquid working media to circularly flow in liquid phase, exchange heat and be stored. The system can achieve the effect of effectively reducing system losses caused by unsteady state heat transfer temperature difference.

The invention relates to a water energy storage system using a fire pool. The water energy storage system comprises air cooled heat pump cold and heat storage equipment and water cooled heat pump cold and heat storage equipment. The air cooled heat pump cold and heat storage equipment comprises the fire pool, an air cooled heat pump unit and a heat exchanger, the heat exchanger is arranged in the fire pool, and a first circulation loop is formed between the air cooled heat pump unit and the heat exchanger so as to cool fire water in the fire pool for cold storage or heat the fire water in the fire pool for heat storage. The water cooled heat pump cold and heat storage equipment comprises an energy storage tank, a water cooled heat pump unit and a cooling tower, and a second circulation loop is formed between the water cooled heat pump unit and the energy storage tank so as to cool water in the energy storage tank for cold storage or heat water in the energy storage tank for heat storage. A third circulation loop is formed between the water cooled heat pump unit and the fire pool, so that heat released by the fire water in the fire pool is used for heating the water in the energy storage tank for heat storage. A fourth circulation loop is formed between the water cooled heat pump unit and the cooling tower, so that cold released by cooling water in the cooling tower is used for cooling the water in the energy storage tank for cold storage. Therefore, the fire pool is used for carrying out cold storage and heat storage at the same time, and the cold and heat storage efficiency is high.

The invention provides a liquid air energy storage device for cold energy self-compensation of a regenerator. The liquid air energy storage device for cold energy self-compensation of the regenerator comprises an energy storage unit, a first-stage regenerator, a second-stage regenerator and an energy release unit, wherein the energy storage unit comprises a compression heat storage and utilization device, a first-stage liquefaction heat exchanger and a second-stage liquefaction heat exchanger which are sequentially connected in series; and the energy release unit comprises an air turbine unit, a second-stage rewarming heat exchanger, a first-stage rewarming heat exchanger and a compression heat storage and utilization device, the second-stage rewarming heat exchanger, the first-stage rewarming heat exchanger and the compression heat storage and utilization device are sequentially connected in series, an inlet of the air turbine unit is connected with an air outlet of the compression heat storage and utilization device, and an outlet of the air turbine unit is connected with the first-stage rewarming heat exchanger through a compensation pipeline. According to the liquid air energy storage device for cold energy self-compensation of the regenerator, cold energy compensation is provided for the first-stage regenerator through low-temperature exhaust of the air turbine unit, and the cold storage efficiency of the first-stage regenerator and the second-stage regenerator is improved, so that the energy storage efficiency of the liquid air energy storage device is improved, and meanwhile, the operation economical efficiency of the liquid air energy storage device is improved.

The invention discloses a cold accumulation energy-saving device for a data center. The cold accumulation energy-saving device comprises a cooling box, a first motor and a circulating water pump, wherein the first motor is fixed in the edge of the top of the cooling box; the output end of the first motor is connected with a first gear; a movable groove is formed in the inner wall of the cooling box; a movable cylinder is mounted in the movable groove; a clamping block is fixed to the edge of the top of the movable cylinder; an air duct pipe is connected into the cooling box in a penetrating mode; a third motor is installed at the edge of the bottom of the air cooling box through bolts; a second gear is connected to the output end of the third motor; a limiting groove is formed in the air cooling box; a sealing disc is installed in the limiting groove; a protruding block is fixed to the outer side of the sealing disc; a leakage hole is formed in the sealing disc; and a circulating waterpump is installed on the outer side of the cooling box through bolts. According to the cold accumulation energy-saving device for a data center, the cold accumulation efficiency is improved, and meanwhile conversion and use of cold energy are achieved in cooperation with cyclic utilization of condensate water.

The invention relates to a water energy storage system with multiple units connected in series and a use method of the water energy storage system with the multiple units connected in series. The water energy storage system with the multiple units connected in series comprises a water storage tank. The upper portion and the lower portion of the water storage tank are provided with an upper water distributer and a lower water distributer correspondingly. The water storage tank is connected with at least one water temperature converter assembly through the upper water distributer and the lower water distributer. A cold storage water pump is arranged between the upper water distributer and the water temperature converter assemblies. Each water temperature converter assembly comprises at least two groups of water temperature converters connected in series. By the adoption of the water energy storage system with the multiple units connected in series, the temperature difference between high-temperature water and low-temperature water can be increased, and the energy storage amount of water of unit volume can be increased; under the condition of the same energy storage amount, the volume of the water storage tank is reduced, the number of the cold storage water pump or the flow of the cold storage water pump is reduced, and the construction cost is reduced; because the flow the cold storage water pump or the number of the cold storage water pump is reduced, under the condition of the same cold storage amount, the operation electricity of the cold storage water pump is reduced, the layering effect is better, and the energy storage efficiency is higher.

The invention relates to a multifunctional fire-fighting water tank and a control method of the multifunctional fire-fighting water tank, and the technical problem of single function of a fire-fighting water tank in the prior art is solved. The multifunctional fire-fighting water tank comprises a fire-fighting water tank body, a plurality of partition plates are arranged in the fire-fighting watertank body, the fire-fighting water tank body is separated into a plurality of independent water storage tanks by the partition plates, and the water storage tanks and a refrigeration device form coldaccumulation circulation loops connected in parallel through a circulation main pipe; the water storage tanks and a cold consumption device form parallel cold release circulation loops through a bypass main pipe; all the water storage tanks are connected with a fire-fighting water device through the circulation main pipe to form a fire-fighting water passage; and the operation flows of the cold accumulation circulation loops, the cold release circulation loops and the fire-fighting water passage are all controlled by a controller. With the technical scheme, a fire-fighting water tank is transformed into the multifunctional water tank integrating cold accumulation, cold release and fire fighting, the transformation is simple, the transformation cost is low, the cold accumulation efficiencyis high, the management is convenient, and the utilization rate of the fire-fighting water tank is improved.

Disclosed is a water distribution device used for a cool storage tank and an opening and arranging method. The method includes the following steps that (1), through fluid mechanics, the design of thewater distribution device is obtained, and requirements that the Frande criterion number Fr is no more than 1, and the Renolds number Re is less than 2000 are needed to be met, so that fluids of different temperatures in the cool storage tank are made to be gravity flows and a stable laminar flow is formed; (2), for the purpose that the Renolds criterion number is less than 2000, the flow rate v of the water distribution device is obtained according to the following formulas of Q'=Q / (delta t*Cp*rho l) and Re=rho2vd / eta <2000; (3), the maximum flow Q' passing through the water distribution device divides the flow rate v passing through the water distribution device, and the minimum opening number of the water distribution device is obtained; (4), according to the minimum opening number of the water distribution device, and combining with the effective opening length of the water distribution device, the final opening number is determined; and (5), the maximum flow passing through the water distribution device divides the effective opening length to obtain the volume flow rate q of per unit length of the water distribution device, 0 is substituted into a formula of Fr=q / [gh<3>(rho i-rho a) / rho a]<1 / 2><1, wherein the Frande c criterion number Fr is no more than 1 in the formula, and the height h from water distribution holes in the lowest portion of the water distribution device to the inner surface of a bottom plate of the cool storage tank is obtained.

The present invention proposes a kind of cold chain storage agent for tuna, which is prepared from the following raw materials in parts by weight: 1-2 parts of dry polyaspartic acid / sodium alginate / hyaluronic acid triple network hydrogel, chlorine 5-21 parts of sodium chloride, 77-94 parts of water. The preparation method of the present invention is simple, the prepared hydrogel has high water absorption rate, low cost, edible raw materials, the prepared hydrogel is safe and non-toxic, has high fluidity, and is not easy to cause the packaging bag to break, thereby reducing the risk of leakage. Has a broad application base.

The present invention provides a cool-storage refrigerator capable of improving the cool-storage efficiency of a cool-storage material and improving the cooling efficiency. In the cold storage refrigerator of the present invention, a cold storage device (20A) filled with a cold storage material (30A) for storing heat of the working gas is provided in the middle of the flow path for generating cold working gas, wherein the cold storage material ( 30A) is a sintered body obtained by sintering fiber materials, and the diameter of the fiber materials arranged on the low temperature side PC of the regenerator (20A) is set to be smaller than the diameter of the fiber materials arranged on the high temperature side PH.

The invention discloses a velocity-adjustable cold accumulation device. The velocity-adjustable cold accumulation device comprises a sealed housing; a fluid inlet is formed in the upper part of the housing; a fluid outlet connector is formed in the lower part of the housing; a plurality of layers of cold accumulation plates are arranged in the housing; a plurality of cold accumulation elements aredistributed on the cold accumulation plates, wherein the cold accumulation elements are in regular hexagonal shapes; cold accumulation materials are packaged in the cold accumulation elements; the bottoms of the cold accumulation elements are detachably mounted on the cold accumulation plates; the cold accumulation materials are foamed metal materials; and flow channels imitating a cellular structure are formed between the cold accumulation elements. The cold accumulation elements are filled with the foamed metal materials through the cold accumulation elements imitating the cellular structure, the cold accumulation elements are distributed to form the cold accumulation plates, the cold accumulation plates are overlaid to form the cold accumulation device, and the quantities of the cold accumulation plates and the cold accumulation elements in the cold accumulation device can be adjusted as required, so that the purpose of adjusting the cold releasing velocity is realized.

The invention provides a water-based phase-change cold storage device under microgravity, relates to the field of phase-change energy storage, and can be applied to a temperature control system in an extreme environment such as a spacecraft. A shell of the cold storage device is provided with a circulating liquid inlet and outlet, and a plurality of micro-pipes are closely arranged in the cold storage device and connected to the circulating liquid inlet and outlet. The peripheral space of a micro-pipe heat exchange section is sealed by a layer of elastic liquid bag, and the micro-pipes, the liquid bag and a cold storage medium sealed inside form multiple cold storage subunits with independent spaces. A layer of net rack is attached to the outer surface of the liquid bag, and the micro-pipes, the liquid bag and the net rack are kept in the coaxial positions and form a compact honeycomb structure. Throttling teeth are arranged at the two ends of the liquid bag and the two ends of the micro-pipes and mesh with each other to achieve the labyrinth sealing effect, and expansion joints of corrugated structures are arranged at the two ends of the micro-pipes. Micro fins are arranged in the sealing positions of the micro-pipes and the liquid bag. According to the water-based phase-change cold storage device under microgravity, the problems that a cold storage device is low in cold storage efficiency, prone to leakage and the like in the extreme environment can be effectively solved.

The invention discloses cold storage equipment. The cold accumulation equipment comprises a cold storage part and a refrigerating unit, wherein the cold storage part comprises a first main body and ice storage parts, a first liquid storage cavity is formed in the first main body and used for storing a first cooling medium, the ice storage parts are arranged in the first liquid storage cavity, and a second liquid storage cavity is formed in the ice storage parts and used for storing a second cooling medium; the freezing point of the second cooling medium is lower than that of the first cooling medium; and the refrigerating unit comprises a second main body, wherein a third liquid storage cavity is formed in the second main body, and communicates with the second liquid storage cavity. By means of the design, the first cooling medium frozen in the first liquid storage cavity and the first cooling medium not frozen in the first liquid storage cavity give play to latent heat and sensible heat respectively, and therefore, the cold storage efficiency of the cold storage equipment is effectively improved. The invention further discloses a cold storage method adopting the cold storage equipment. The invention further discloses a regional cold supply system with the cold storage equipment.