20 results about "Phase change" patented technology

A solar heat responsive roofing material includes a continuous phase and dispersed discontinuous phase having a phase transition at a temperature between about 50 degrees Celsius and about 95 degrees Celsius.

The invention relates to a preparation method of a PLA strand filtering rod capable of lowering flue-gas temperature and reducing suction resistance. The preparation method includes the steps of preparing a phase-change material mixture, preparing phase-change materials containing fragrant substances, preparing a fragrant filtering rod body capable of slowly releasing fragrance and the like. By increasing the addition quantity of the phase-change materials for combination with the PLA strand filtering rod body capable of reducing suction resistance and conducting triple cooling, the overall smoking taste of cigarettes and heating non-burning cigarettes is improved, and meanwhile, the flue-gas temperature is also lowered; smoking comfort is improved for customers, the process flows are simple, and the preparation method is suitable for industrial production.

The biodegradable drug delivery systems described here are formulated for implantation into the nail unit and its surrounding tissues for the treatment of various nail unit conditions. The systems include non-temperature dependent phase change compositions that may be formulated as solutions, solids, semisolids, microparticles, or crystals.

The invention relates to fibers capable of heat storage and temperature adjustment. The fiber prepared by using the composite melt-spinning method comprises the following components by weight percent: 20% to 60% of polymer-type phase-change materials as a core component or an island component and 80% to 40% of fiber-forming polymers as a skin component or a sea component, wherein the polymer-type phase-change materials comprise the homopolymer or copolymer of alkyl acrylate, alkyl methacrylate and monoalkyl/dualalkyl itaconate or the copolymer of the homopolymer thereof, and is characterized in that the normal alkyl capable of carrying out the solid-liquid and liquid-solid phase transition and further achieving the effect of energy storage is fixed on the main chain of the polymer by the covalent bond; and the fiber-forming polymer comprises at least one selected from polyethylene, polypropylene, polyamide, co-polyamide, co-polyester and co-polyacrylonitrile. The weight loss of the fiber taking methylbenzene as solvent is not higher than 5% after being subjected to the treatment of a Soxhlet extractor for 2 hours.

The invention discloses a phase-change energy storage type radiant heating and cooling tail end device and a control method. The phase-change energy storage type radiant heating and cooling tail end device comprises a heating device, a cooling device, a control system of the heating device and a control system of the cooling device. The heating device is a phase-change energy storage type floor arranged on the ground, and the cooling device is a phase-change energy storage type suspended ceiling arranged at a roof. Phase-change materials and capillary networks are arranged in the phase-change energy storage type floor and the phase-change energy storage type suspended ceiling, so that the tail end of a radiant heating air conditioner is combined with the phase-change energy storage technology. By using the phase-change materials, energy storage at night and energy release in the daytime can be achieved so that operation cost can be saved for users using electric energy conversion, and the difference between the peak and the valley of a power grid can be reduced to protect power grid equipment; meanwhile, the method of combining time control with temperature control is adopted, the adopted temperature control can make up for defects of the time control, and therefore the indoor temperature is kept within the human comfort range.

The invention relates to a thermal storage type vacuum tube which comprises a tubular glass outer shell, an open end of the glass outer shell is connected with a glass flange, the glass flange is connected with a metal end cover through the hot-pressing sealing technology, a protective cap of an exhaust nozzle is arranged at the other end of the glass outer shell, an exhaust nozzle which is integrally molded with the glass outer shell is arranged in the protective cap of the exhaust nozzle, a metal material box body is arranged in the glass outer shell, a solar energy selective coating is arranged on the outer surface of the box body, space between the glass outer shell and the box body is pumped into vacuum state through the exhaust nozzle, a water inlet and a water outlet are respectively formed on the metal end cover, the water inlet and the water outlet are communicated through a heat exchange tube arranged in the box body, and a working medium in the box body adopts solid-liquid phase change materials with phase change temperature of 60DEG C-80DEG C. The working medium in the box body adopts the solid-liquid phase change materials, when the solid-liquid phase change materialsachieve the phase change point, the materials are converted to liquid state from solid state, and a large amount of heat is absorbed, and the temperature of the phase change materials can be basicallymaintained constant. The thermal storage type vacuum tube can be widely applied in a variety of solar water heaters.

The invention discloses a wear-resistant heavy oil catalytic cracking catalyst capable of reducing sulfur content of gasoline. Based on the total mass of the catalyst, the wear-resistant heavy oil catalytic cracking catalyst comprises not less than 15 mass percent of mullite, 0.05-20 mass percent of vanadium in terms of vanadium element and 15-50 mass percent of Y-type molecular sieve. The wear-resistant heavy oil catalytic cracking catalyst is prepared by taking mullite microspheres, which are synthesized at low temperature by taking a large amount of vanadium-containing compound as a phase change auxiliary agent, as a raw material, performing in-situ crystallization on the microspheres to synthesize a NaY molecular sieve, modifying and exchanging. The wear-resistant heavy oil catalytic cracking catalyst has rich middle pores and macropores, is strong in wear resistance, can reduce the sulfur content of the gasoline in a catalytic cracking process and has an excellent heavy oil cracking function.

The invention provides a system startup method based on a PCM (Phase Change Random Access Memory), which comprises the following steps: saving a Bootloader and a kernel image in the PCM; implementing the Bootloader on the PCM and distributing a read-write part into a DRAM (Dynamic Random Access Memory) during the implementation; implementing the kernel image on the PCM and distributing a read-write part into the DRAM (Dynamic Random Access Memory) during the implementation. The system startup method has the benefits that both the Bootloader and the kernel image are saved and implemented by the PCM, the read-write parts are distributed into the DRAM during the implementation, and as a data section required to be moved in the startup only account for less than 1/10 of the Bootloader and the kernel image, and the read latency of the PCM is equivalent to that of the DRAM, the system startup time can be effectively reduced, and the system efficiency can be improved.

The invention provides a phase changing flapping mechanism and a dragonfly-imitated flapping wing aircraft. The phase changing flapping mechanism comprises a body bracket, a screw mechanism fixed on the body bracket and a rotary driving mechanism, wherein the screw mechanism comprises a screw, a nut matched with one end of the screw, a sliding rail fixedly connected to one side of the nut, a sliding block matched with the sliding rail and a sliding driving mechanism driving the nut to move back and forth along the sliding rail; and the rotary driving mechanism comprises a driving motor and a transmission mechanism connecting the driving motor and the sliding block. The phase changing flapping mechanism and the dragonfly-imitated flapping wing aircraft are simple in structure, convenient tomanufacture and low in cost, and flapping parameters of the flapping-wing aircraft can be changed in the flight process, so that the flight posture of the aircraft is changed, different flapping functions are realized, the flapping-wing aircraft is enabled to hover for flight, the flexibility is enhanced, and the application value of the dragonfly-imitated flapping-wing aircraft in the fields ofmilitary reconnaissance, complex terrain observation and the like is improved.

The invention discloses a device for increasing the thermal utilization rate of a disc type solar thermal collector. The device comprises a convex lens, a support, a multi-disc condensation system, a stirling engine, a condensation cavity, a heat absorption cavity and heat absorption pipes. The multi-disc condensation system is composed of a plurality of parabolic mirrors and a sunlight tracking rotation device. The stirling engine is arranged on the multi-disc condensation system through the support. The opening, facing the sun, of the stirling engine is sealed through the convex lens. Parallel sunlight rays are refracted and converged into a light spot through the convex lens. The condensation cavity and the heat absorption cavity are formed in the stirling engine. The heat absorption pipes are arranged in the condensation cavity. The small-disc-diameter end of the heat absorption pipes is located at the condensation focal point of the convex lens. The heat absorption pipes are filled with liquid working media. Phase change is generated after the liquid working media are heated to a certain temperature. Heat is conducted to the heat absorption cavity through high-temperature conduction for energy conversion. The stirling engine is driven to do work so that electric energy or mechanical energy can be generated. By means of the device, the two ends of the stirling engine can both receive solar irradiation energy, and the sunlight absorption and utilization rate is increased.

The invention provides a diode rectification direct-current-based deicing device capable of deep pressure regulation. The diode rectification direct-current-based deicing device comprises a rectifier transformer (1), a deep pressure regulation mechanism (2), a diode rectifier (3), a forced air cooling system (4) and a deicing phase changing system (5). The input end of the rectifier transformer (1) is connected with the output end of the deep pressure regulation mechanism (2), the input end of the diode rectifier (3) is connected with the output end of the rectifier transformer (1) and the output end of the forced air cooling system (4) in parallel, and the output end of the diode rectifier (3) is connected with the input end of the deicing phase changing system (5). The diode rectification direct-current-based deicing device is low in loss, harmonic wave and cost, the pressure regulation range can be 14-100%, the deicing requirements of electric transmission lines of different types and different lengths can be met, a forced air cooling mode is used, the structure is simple, and maintenance is not needed.

The invention relates to a phase changing refrigerating medium self-drive heating system for a CO2 heat pump. The phase changing refrigerating medium self-drive heating system for the CO2 heat pump comprises a compressor, a gas cooler, an evaporator and a user side; a refrigerating agent outlet of the compressor is communicated with a refrigerating agent inlet of the gas cooler; a refrigerating agent outlet of the gas cooler is communicated with a refrigerating agent inlet of the evaporator; a refrigerating agent outlet of the evaporator is communicated with a refrigerating agent inlet of thecompressor; a phase changing refrigerating medium inlet of the gas cooler is communicated with an outlet of the user side; and a phase changing refrigerating medium outlet of the gas cooler is communicated with an inlet of the user side. An external-power-free driving circulation type is adopted for the user side of a heating system, a water pump is not arranged, the propelling force generated bya phase state change happening when a phase changing refrigerating medium absorbs and releases heat is used for propelling the heating system to circulate between the user side and the gas cooler; anddue to the heating manner, the power consumption part of the water pump is saved, the total power consumption of the heating system is greatly reduced, and the energy utilizing rate is increased.

The invention provides an energy-storage phase-change material box for a heat energy warehouse, and relates to the technical field of heat energy storage. The box comprises a trapezoid water storage tank which is disposed on a sunny slope of a mountain, and the interior of the trapezoid water storage tank is provided with a heat energy storage room. The heat energy storage room is located at the bottom of the trapezoid water storage tank. The interior of the heat energy storage room is provided with a longitudinal spirally-rising spiral supporting surface which is provided with energy-storage phase-change materials in a stacked manner. The spiral supporting surface is also provided with a water pipe in a shape follow-up manner. One end of the water pipe serves as a cold water input end, and the other end of the water pipe is a hot water output end. The trapezoid water storage tank is filled with water, and the water at the lower part of the trapezoid water storage tank is composite saline water. The salinity of the water in the trapezoid water storage tank gradually increases from the top to the bottom. The warehouse can make the most of solar energy, and can enable the heat energy to be stored in the water storage tank. The thermal preservation in the water storage tank is achieved through the composite saline water, and the water convection can be prevented from causing the loss of heat energy.

Provided is a cooling system wherein a first two-phase refrigerant can be circulated by a pump through an evaporator, to a first condenser, to a refrigerant-to-refrigerant heat exchanger and back to the pump. By providing the refrigerant-to-refrigerant heat exchanger in series with the condenser, a first environment can be cooled without having to operate a vapor compression circuit when an ambient temperature outside the first environment is a predetermined amount below an ambient temperature in the first environment.

The invention discloses an inorganic light-emitting diode display panel and a display device. Display areas of the display panel comprise a plurality of light-emitting areas and non-light-emitting areas. One non-light-emitting area is arranged between at least two adjacent light-emitting areas, and the display panel comprises a first substrate, a plurality of inorganic light-emitting diodes arranged on one side of the first substrate and a stress phase change module. Each inorganic light-emitting diode comprises a first electrode, a second electrode and a p-n diode located between the first electrode and the second electrode, and the inorganic light-emitting diodes are located in the light-emitting areas. The stress phase change module comprises a third electrode, a fourth electrode and amaterial layer, the original state of the position, bearing external force, of the material layer is changed into a phase change state capable of carrying out light reflection, and when a preset electric field is arranged between the third electrode and the fourth electrode, the material layer returns to the original state from the phase change state, wherein the stress phase change module is at least located in the non-light-emitting areas. By means of the inorganic light-emitting diode display panel and the display device, the display panel can be reused as a writing pad, and the power consumption is low.

The invention belongs to the technical field of piping of heat exchangers and particularly relates to a piping structure suitable for a heat exchanger with phase change. The piping structure comprises a casing, a gas-phase condensation integral piping area and/or a liquid phase boiling integral piping area is/are arranged in the casing, and mutually communicated gas channels for dividing the integral piping area into a plurality of local piping areas are arranged in the gas-phase condensation integral piping area and/or the liquid phase boiling integral piping area respectively. The gas channels comprise a plurality of transverse gas channels, longitudinal gas channels and inclined gas channels. Gas channels are introduced into the piping structure suitable for the heat exchanger with phase change, namely the combined transverse gas channels, longitudinal gas channels and inclined gas channels communicated mutually are arranged in the integral piping areas, therefore, the gas phase overflow rate between tubular bundles is effectively increased, the gas flow condition and heat conduction working condition between the tubular bundles are improved remarkably, heat conduction efficiency is effectively increased under the conditions that the caliber of the device is not increased, the piping structure suitable for the heat exchanger with phase change is easy to apply and popularize, and fine design is facilitated.