65results about How to "Improve cold storage capacity" patented technology

The invention provides a composite phase-change cold-accumulation material. The composite phase-change cold-accumulation material is formed by compounding dodecanol, water, glycerin or a mixture of any two of the dodecanol, the water and the glycerin, and a surfactant. The composite phase-change cold-accumulation material has the characteristics of small hardness, large available phase change latent heat, stable cold accumulation capacity and the like.

The phase change cold accumulator includes cold accumulator barrel with one set of heat exchange pipe with coolant, phase change cold accumulating material, upper liquid collecting chamber located in and communicated to the upper end of the heat exchange pipe, and lower liquid collecting chamber located in and communicated to the lower end of the heat exchange pipe. The cold accumulator barrel is provided with coolant inlet communicated with the lower liquid collecting chamber and coolant outlet communicated with the upper liquid collecting chamber, and the phase change cold accumulating material is sealed inside the cavity comprising the cold accumulator barrel, the heat exchange pipe, the upper end plate and the lower end plate. The present invention has small heat transfer resistance, small flow resistance, high cold accumulating and releasing efficiency, and homogeneous solidification and melting of the phase change cold accumulating material, and is suitable for various cooling air conditioners.

The invention provides a phase change cold accumulation composite material based on polyethylene glycol. The phase change cold accumulation composite material comprises 8-10 parts of polyethylene glycol and 0.3-5 parts of solvent, wherein the solvent is water and one or more of organic solvent soluble with water. The phase change cold accumulation composite material further comprises 0.05-2 parts of nucleating agents. The phase change cold accumulation composite material has high phase change heat and low phase change temperature and can be circularly used, and the cold accumulation capacity of the phase change cold accumulation composite material keeps good. Meanwhile, a preparing method of the phase change cold accumulation composite material is simple, practicable and low in cost.

The embodiment of the invention discloses a ground source cold accumulation device and a ground source cold accumulation system. The ground source cold accumulation device comprises a liquid cold accumulation working substance and an underground cooling coil heat exchange unit, the liquid cold accumulation working substance is positioned in underground soil, the underground cooling coil heat exchange unit is positioned in the liquid cold accumulation working substance and is partially exposed on the ground, realizing the cold accumulation of the cold accumulation working substance. The cold accumulation of the cold accumulation working substance is performed through the underground cooling coil heat exchange unit, and the cold accumulation capability and the heat exchange capability of unit space are enhanced through the liquid cold accumulation working substance. The accumulated cold capability of the cold accumulation working substance can be used as the cold ends of air conditioning devices and other heat exchange systems, and the ground source cold accumulation device has simple structure, stable and reliable operation and high efficiency and is environmental friendly.

The embodiment of the invention discloses an energy storage assembly and a multi-split air-conditioning system, and relates to the technical field of electronics. A refrigerant can be used for storing energy, the energy storage capacity can be improved, and the energy storage effect is enhanced. According to the specific scheme, the energy storage assembly (10) is connected between an outdoor unit module (20) and an indoor unit module (30) and comprises an energy storage barrel (11), an electronic expansion valve (12) and an electromagnetic valve assembly (13); and the electromagnetic valve assembly (13) comprises a plurality of electromagnetic valves, a plurality of one-way valves and four ports. A first end (131) of the electromagnetic valve assembly (13) is connected with one side (111) of the energy storage barrel (11); and a second end (132) of the electromagnetic valve assembly (13) is connected with the other side (112) of the energy storage barrel (11). The energy storage assembly is used for the process of energy storing of a multi-split air conditioner.

The invention discloses a house type barn food grain storing method. The house type barn food grain storing method comprises an inner loop current temperature control technology, a fumigation and steaming technology and a nitrogen controlled atmosphere technology, which one of the inner loop current temperature control technology, the fumigation and steaming technology and the nitrogen controlledatmosphere technology is selected for implementation; in the inner loop current temperature control technology, cooling capacity of a cooling core of a food grain pile at the lower part of a barn is pumped out and inputted into space above the top of the food grain pile, and a downgoing type air current is formed in the food grain pile; in the fumigation and steaming technology, fumigation and steaming gas in the space above the top of the food grain pile is pumped out from the upper part of the barn and is charged in the bottom of the food grain pile from a venthole in the lower part of the barn, and an upgoing type air current is formed in the food grain pile; and in the nitrogen controlled atmosphere technology, nitrogen is charged in the space above the top of the food grain pile fromthe upper part of the barn, and then gas is exhausted outwards from the lower part of the barn, so that the concentration of the nitrogen in the food grain pile can reach a nitrogen concentration target value I. According to the house type barn food grain storing method disclosed by the invention, an appropriate storing technology can be flexibly selected according to actual food grain storing situations, so that the food grain storing quality can be effectively improved; and inner loop current temperature control, fumigation and steaming as well as controlled atmosphere storage can be independently operated, so that the food grain storing quality can be guaranteed, besides, consumption of storing energy can be reduced, and the operating cost is low.

The invention discloses a refrigerant hydrate circulating cool storage system. The refrigerant hydrate circulating cool storage system comprises a hydrate reaction barrel, an absorber, a solution pump, a generator, a condenser and mixed liquid which is formed by a DMF solvent and an R134a refrigerant and is operated in the whole system. The DMF solvent and the R134a refrigerant form a mixed solution in the absorber, and the mixed solution is pumped into the generator through the solution pump. R134a steam is generated in the generator, enters an evaporator coil located in the hydrate reaction barrel after being cooled and liquefied through the condenser so as to provide cooling capacity for hydrate reactions and then returns to the absorber, the residual solution in the generator also returns to the absorber to be mixed again. According to the refrigerant hydrate circulating cool storage system, hydrates melts to absorb heat at the high temperature by day so as to achieve the purpose of cooling a room, and waste heat or low-price electric energy is used for achieving the purpose of refrigerant gas hydrate cool storage by night through the cool storage circulating system.

The invention provides a cold supply system and a cold supply method thereof. The cold supply system comprises first refrigeration equipment, second refrigeration equipment and cold storage equipment,the first refrigeration equipment and the cold storage equipment are used for providing a first medium for end equipment for cold supply to the end equipment, the second refrigeration equipment is used for providing the first medium for the cold storage equipment to carry out cold charging on the cold storage equipment, a cooling side medium input port of the second refrigeration equipment is used for receiving the first medium output by the end equipment, a freezing side medium input port of the first refrigeration equipment is connected with a cold supply side medium output port of the second refrigeration equipment, and is used for receiving the first medium output by the cooling side medium output port of the second refrigeration equipment, through the system and the method, cold supply stability of the end equipment is ensured, and adjustment of the cold storage amount of the cold storage equipment is reinforced.

The invention provides a refrigeration device. The refrigeration equipment includes a shell, a foam layer, an evaporator and an inner container, and also includes an ice row located between the evaporator and the inner container. By placing the ice row between the evaporator and the inner tank, and wrapping the ice row in the foam layer, the ice row is in a closed environment, and the cold energy stored by the ice row will not directly contact with the air. When it is opened When refrigerating the door body of the equipment, the ice row will not lose much cooling capacity. After closing the door body, the cooling capacity lost due to opening the door can be quickly replenished by the ice row, which is more conducive to maintaining a constant temperature in the inner tank and increasing heat preservation Time, to achieve improved cold storage performance of refrigeration equipment.

The invention discloses a low-temperature phase transition material for storing cold energy. The low-temperature phase transition material is characterized in that the low-temperature phase transition material comprises the following components in parts by weight: 0.2-5 parts of nano metal material, 0.2-5 parts of nano porous graphite substrate, 0.2-5 parts of surfactant, and 20-98 parts of low-temperature organic phase transition substance. The invention further discloses a preparation method of the low-temperature phase transition material. The low-temperature energy storage material can be used for storing surplus waste cold during an energy consumption peak, and release the stored cold at a valley. After the material is transported to other required places, the material is used for cold energy utilization equipment; the problem that the fluctuation of cold energy supply is great is solved; the utilization ratio of the cold energy is increased greatly; and the material is energy-saving, environment-friendly, better in stability and lower in toxicity, and can better meet cold accumulation requirements.

The invention discloses a coolant, and belongs to the field of novel materials. The coolant is characterized in that sepiolite is used as the raw materials, puffed, and connected with sulfydryl groups, and the polarity groups in a structure of the sepiolite and carbomer dispersion can form hydrogen bonds with polarity groups in high water absorbent resin so as to substitute the lost water molecules around the polarity groups; the metal ions in the modified sepiolite interlayer structure are dissolved with carbomer, the ionized hydrogen ions generate one part of ion exchange, the produced metalions can provide conditions for the coordination crosslinking of macromolecules in the system, and the activity and stability of the internal biological macromolecules requiring cooling are effectively improved; the coordination crosslinking is physical crosslinking, the process is reversible, the phase change temperature range is further increased, and the cooling effect is improved; the problems of slow water absorbing speed, small water absorbing amount and narrow phase-transition temperature range in the existing coolant are solved.

The invention discloses a liquefied gas storage tank, which comprises an inner cavity, a thermal-insulation layer, and an outer cavity. The heat-insulation layer is arranged on the external side of the inner cavity, the outer cavity is arranged on the external side of the heat-insulation layer; the space in the inner cavity is used to store the liquefied gas, and the inner cavity is communicated with the outer cavity. The invention further discloses an application method of the liquefied gas storage tank. The liquefied gas storage tank is arranged under the ground, in the hill body, or under the water. The liquefied gas storage tank has a compact structure and a strong performance on maintaining the temperature in the tank and thus is capable of maintaining the liquid state of the gas in the tank.

The invention discloses a cold storage agent for kiwi fruit storage. The cold storage agent comprises: a copolymer, mannitol, malic acid, xylitol, sodium diacetate, butanediol, calcium lactate, and aphase change temperature regulator.

The invention provides a large centralized air-conditioning system with distributed cold and heat sources. The large centralized air-conditioning system comprises a large energy station, wherein the large energy station is connected with user units through a transmission and distribution pipe network, and a plurality of user units are distributed along the transmission and distribution pipe network; the transmission and distribution pipe network is a three-pipe annular transmission and distribution pipe network and comprises an annular main water supply trunk pipe, an annular main backwater trunk pipe and an annular secondary backwater trunk pipe, and the annular main water supply trunk pipe, the annular main backwater trunk pipe and the annular secondary backwater trunk pipe are parallel;the water supply end of the large energy station is connected with the main water supply trunk pipe, the backwater end of the large energy station is connected with the main backwater trunk pipe, themain backwater trunk pipe communicates with the secondary backwater trunk pipe through a secondary by-pass pipe, and the main water supply trunk pipe communicates with the main backwater trunk pipe through a third by-pass pipe. According to the large centralized air-conditioning system with the distributed cold and heat sources, the centralized large air conditioning system and a decentralized air conditioning system are combined, the advancing or delaying of the cooling and heating in the morning and evening or in winter and summer can be realized, the operation adjustment of the system is more flexible and convenient.

The invention discloses a phase-change cold storage module. The phase-change cold storage module comprises a template shell, a phase-change cold storage agent and an evaporator are arranged in the template shell, an evaporator inlet, an evaporator outlet and a cold storage material filling port are formed in the side wall of the template shell, and the cold storage material filling port is communicated with an inner cavity of the template shell. The invention further discloses a manufacturing tool of the phase-change cold storage module. The manufacturing tool comprises an extrusion head, reshaping tools are arranged on the two sides of an extrusion opening formed in the lower portion of the extrusion head, the reshaping tools are driven by air cylinders, a cavity mold is arranged under the reshaping tools and the extrusion opening, and an evaporator fixing tool is arranged at the bottom of the cavity mold. The invention further discloses a manufacturing method of the phase-change cold storage module, wherein the phase-change cold storage module is manufactured by means of the manufacturing tool of the phase-change cold storage module. The structure and the template shell material are changed, manufacturing is convenient, the cold storage capacity is significantly increased, and the corrosion and sealing problems can be solved.