226 results about "Passive cooling" patented technology

A cooling system including an evaporator, a passive condenser, a heat exchanger, and a pump. The passive condenser is arranged in parallel with the heat exchanger relative to the fluid flow of a primary cooling medium. When a secondary cooling medium is provided to the heat exchanger, at least some of a primary cooling medium in the gas phase switches from being received by the passive condenser to the heat exchanger without operating any valves and supplies the primary cooling medium in the liquid phase to the evaporator. When the secondary cooling medium is not provided to the heat exchanger, the heat exchanger does not supply the primary cooling medium in the liquid phase to the evaporator. The pump is located in a liquid line fluidly connecting the evaporator to the passive condenser and the heat exchanger and pumps the primary cooling medium in the liquid phase to the evaporator.

The invention relates to the field of new energy, and discloses a regional multi-energy complementary zero-carbon energy supply system coupling a reversible solid oxide battery technology and a closed CO2 network, which comprises an RSOC heat-mass-electricity reversible converter, a closed CO2 circulating network, renewable energy power, an external heat source, a chemical energy storage, a natural cold and heat source and a terminal energy consumption module. According to the invention, the RSOC bidirectionally operates in a power generation mode and an electrolysis mode, the coupling chemical energy storage module realizes regional multi-time scale energy balance, photovoltaic power generation supplies power to RSOC electrolysis and terminal users at the same time, and light condensation and heat collection and industrial waste heat in the external heat source module can be integrated with the RSOC module to reduce electrolysis power consumption. The closed CO2 network adopts pressurized low-temperature CO2 as a circulating working medium of the regional heating and cooling network, and RSOC waste heat and natural cold and heat resources can be fully utilized on the source side; the network heating and cooling capacity is greatly improved at the terminal through phase change heat transfer, passive cooling of a user is achieved, meanwhile, the water source heat pump is coupled to meet the heating power requirements of different grades, and net zero carbon emission is achieved in the whole process.

The invention discloses a photovoltaic panel passive cooling system capable of automatically absorbing water, evaporating and cooling based on capillary action. The photovoltaic panel passive cooling system comprises a photovoltaic panel, a photovoltaic support, a wicking material, a water supply assembly, a water conveying pipe, a water storage tank and an adjusting and fixing assembly. The photovoltaic panel is fixedly installed through the photovoltaic support, and the installation mode is horizontal, inclined or vertical. The two ends of the water supply assembly are horizontally arranged along the edges of the two sides of the photovoltaic panel. The wicking material is attached to the back surface of the photovoltaic panel, and the lower end of the wicking material extends into the water supply assembly; the water supply assembly is connected with the water storage tank through a water conveying pipe. The adjusting and fixing assembly is connected with the water supply assembly and the photovoltaic panel and used for adjusting the vertical state of the water supply assembly. According to the invention, an energy-saving, water-saving, efficient and reliable photovoltaic panel cooling effect is realized, so that the power generation efficiency of a photovoltaic system is improved and the service life of the photovoltaic system is prolonged.

The invention discloses a radiation refrigeration cement-based material with a metasurface and a preparation method and application thereof.The radiation refrigeration cement-based material with the metasurface is prepared from, by mass, cementitious material particles, water and an additive according to the mass fraction ratio of (1-2): (0.4-0.6): (0.01-0.02). Bubbles are guided to be spontaneously arranged and grow on the surface of cement-based material slurry which is not completely hardened, complete hardening of a matrix and stability of surface microbubbles are finally achieved by combining the rheological property of the cement-based material, the super-surface cement-based material which is excellent in optical performance and provided with orderly-arranged cavities in the surface is finally obtained, passive cooling can be efficiently achieved, and the service life of the super-surface cement-based material is prolonged. Use of active refrigeration equipment such as an air conditioner is reduced, and the system is suitable for being applied to building walls which are under sun irradiation for a long time in medium and low latitude areas and have cooling requirements, contributes to reduction of building energy consumption, and realizes low-carbon sustainable development.

Passive cooling article (120) includes a plurality of first elements (122) defining a high absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range and a plurality of second elements (124) defining a low absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range, wherein the plurality of first (122) and second (124) elements are interspersed to form a major structure having a first major surface (130) comprising the first element outer surfaces (126) and the second element outer surfaces (128), wherein the first element outer surfaces (126) face a first direction toward a first end region (136) of the major structure (130) and the second element outer surfaces (128) face a second direction toward a second end region (136) of the major structure. The article (120) may be applied to a substrate (104), for example, on a generally vertical surface of a vehicle or stationary structure.

The invention relates to the technical field of intelligent cables, in particular to an automatic sensing and monitoring intelligent cable and a control method, and the method comprises the steps: collecting the temperature data of a cable, processing the temperature data in time and space based on the temperature values of all positions and all times in the temperature data of the cable, and constructing a temperature space-time matrix of the cable; performing prediction according to the temperature space-time matrix of the cable to obtain a temperature space-time matrix containing a plurality of moments after the current moment, and taking the temperature space-time matrix as a predicted temperature space-time matrix of the current moment; determining a cooling regulation and control coefficient by using the temperature change and distribution condition in the predicted temperature space-time matrix at the current moment; and performing temperature regulation and control on the cable based on the cooling regulation and control coefficient. According to the invention, the conversion from passive cooling to active prevention is realized, faults and fire risks caused by overheating are effectively prevented, and the distribution and utilization efficiency of cooling resources is optimized at the same time.

The invention discloses a zero-energy-consumption real-time photovoltaic panel passive cooling device, and belongs to the technical field of photovoltaic panel cooling. Zero-carbon operation of the system is achieved while real-time temperature drop of the photovoltaic panel is obtained, water vapor is cooled in time through the micro-channel-Janus micro-membrane, and the operation performance of the photovoltaic panel under various complex climate environment conditions is improved. Comprising a solar evaporative cooling system, a condensation circulating device and a water collecting device, the water collecting device and the condensation circulating device are connected through preset room-temperature cooling water, the cooling water serves as a cold source to promote condensation of water vapor in the condensation system, and waste heat of the system is collected to promote evaporation to provide a humidity environment for a hygroscopic medium. Water on the lower layer is evaporated under the combined action of waste heat of the photovoltaic panel and steam condensation heat release, and formed steam is diffused in the system so that a high-humidity environment can be formed. According to the method for forming high humidity by utilizing waste heat of the photovoltaic panel and steam condensation heat dissipation to evaporate water, the defect that the adsorption capacity of a hygroscopic medium is low under low humidity is fundamentally avoided.

A composite material for passive cooling includes a porous structure including an expanded graphite and a surfactant, the porous structure being provided with at least one crystalline deliquescent salt that is selected from the group consisting of chloride, bromide, sulphate, and nitrate. The uses of the composite material in passive cooling are also addressed.

Systems and methods are provided for managing temperature inside a wireless power transfer (WPT) system for an electric vehicle. A thermal management system of a WPT system uses one or more of a passive cooling method, a semi-active cooling method, and an active cooling method to manage an internal temperature of the WPT system during a charging session. Improvements in thermal management allow for longer duration of charging sessions and higher power charging sessions without the need to suspend charging for cooling. In addition, several different methods of camouflaging and implementing a thermal management system in a public space are also provided.

The invention belongs to the technical field of building construction, and particularly provides a device for cooling concrete coarse aggregate by using cooling water, which comprises an aggregate storage bin, a temperature sensor, a weight sensor and a control unit, the top of the aggregate storage bin is provided with a water inlet and a feed inlet, the bottom of the aggregate storage bin is communicated with a water collecting device, and a water filter screen and a baffle are mounted in the aggregate storage bin; temperature sensors are mounted in the water inlet, the feed port and the water collecting device, weight sensors are mounted on the baffle and in the water collecting device, and the control unit comprises a heat exchange kinetic model and a water content calculation model. The concrete aggregate cooling device can conveniently cool concrete aggregate, can measure aggregate delivery temperature and moisture content data, realizes conversion from passive cooling to predictive intelligent control, effectively controls concrete mold entering temperature, reduces cracks caused by hydration heat, and improves mass concrete construction quality and structural safety. The invention also provides an operation method of the device for cooling the concrete coarse aggregate by using the cooling water.

The invention relates to the field of energy-saving and environment-friendly new materials, in particular to a passive cooling radiation refrigeration light-transmitting film and a preparation method thereof. Comprising a first release protective film layer, a back adhesive layer, a first base material film layer, a second base material film layer, an IR reflecting layer, an IR selective emitting layer, a third base material film layer, a self-cleaning and self-repairing functional coating and a second release protective film layer which are sequentially stacked. The passive cooling radiation refrigeration light-transmitting film provided by the invention is moderate in thickness, strong in flexibility and large in stretchability, and can be tightly attached to any surface part. Under the condition that the appearance color is not influenced, the visible light wave band transmittance is greater than 70%, the infrared light reflectivity is greater than 68%, the 8-13 [mu] m atmosphere window emissivity is greater than 97%, the radiation refrigeration power is greater than 140 W / m < 2 >, and the heat insulation performance is good; as the used base material is TPU or PET, the tensile property is large, the flexibility is strong, and the product has good flexibility and contractibility, and is not easy to wrinkle and blister during film pasting construction.

Methods and systems for managing cooling of a data processing system. In particular, active cooling using a fan controlled by an embedded controller is provided in a data processing system having components from a thermal architecture that is only capable of providing passive cooling through throttling of a motherboard of the data processing system. The thermal architecture is based on a passive cooling thermal architecture of a computing device without the capacity to include the fan and the embedded controller, and the motherboard is one of the components of the thermal architecture.

The invention relates to a daytime passive radiation refrigeration coating material and a preparation method and application thereof.The preparation method comprises the steps that perovskite oxide Sr (Zr < 1-y > Xy) Oz ceramic, polyvinylidene fluoride and an N-methyl pyrrolidone solution are blended, and organic-inorganic mixed slurry is obtained; coating the slurry on the surface of a substrate through a blade coating method, a pulling method or a cold spraying process; and airing or drying to obtain the product. The coating material disclosed by the invention has excellent sunlight high reflectivity and mid-infrared high emissivity, so that the coating can effectively dissipate heat to outer space in a daytime high-temperature environment, and a passive cooling effect is realized. Under the conditions that the sunlight intensity is 772 W / m < 2 > and the environment relative humidity is 19%, the refrigeration performance of 6.8 DEG C can be achieved. Meanwhile, the slurry formula and the preparation process of the coating are simple and easy to implement, raw materials are easy to obtain, the cost is low, the coating is suitable for various coating processes, and stable coatings can be formed on the surfaces of matrixes in different shapes.

An underwater data center includes a plurality of data centers positioned in a water environment, powered by one or more sustainable energy sources. One or more data center nodes is coupled to the data center or included in the plurality of data centers. A controller is coupled to the one or more data center nodes. A housing member houses the data center node under water. A passive cooling system coupled to plurality of data centers. The passive cooling operates by at least one of convention or conduction without moving fluid in the housing. The plurality of data centers is coupled to a sustainable energy source that provides energy to the underwater data center. The controller is configured to redistribute excess power from the sustainable energy source to an alternate source responsive to determine that the power from the sustainable energy source is greater than an amount needed to power the system.

The invention relates to the technical field of cooling systems, and provides a passive cooling system which comprises a heat exchange device, a first pipeline and a separation box, the heat exchange device is used for carrying out heat exchange with seawater, the heat exchange device is connected with the separation box, and the heated seawater enters the separation box; the first pipeline is connected with the separation box, and the first pipeline is used for discharging the heated seawater; a partition plate is arranged in the separation box and used for preventing steam bubbles from flowing along the first pipeline. According to the passive cooling system, by arranging the partition plate in the separation box, a steam-water mixture can be separated by utilizing buoyancy force and the partition plate, so that steam is gathered at the top of the separation box, and liquid is gathered at the bottom of the separation box, so that the liquid is discharged from the first pipeline, and the steam in the first pipeline is prevented from being directly contacted with backflow supercooled seawater to cause condensation; and a water hammer is further induced.

A passive cooling system for aircraft electronics includes an electronics chassis having a chassis exterior and defining a chassis interior; a heat spreader having a body located in the chassis interior; a heatsink located in the chassis interior; a cold plate operably coupled to the electronic chassis and thermally coupled to the heatsink; a first plurality of heat pipes thermally coupled with the cold plate; and a second plurality of heat pipes thermally coupling the heatsink with the heat spreader.

The present invention relates to the field of new energy, and discloses a regional multi-energy complementary zero-carbon energy supply system that couples reversible solid oxide cell technology with a closed CO2 network, including RSOC thermal-mass-electricity reversible conversion, a closed CO2 circulation network, renewable energy power, an external heat source, chemical energy storage, natural cold and heat sources, and end-use energy modules. In the present invention, the RSOC operates bidirectionally in the power generation and electrolysis modes, and couples with the chemical energy storage module to achieve regional multi-time-scale energy balance. Photovoltaic power generation supplies power to both the RSOC electrolysis and end users simultaneously. In the external heat source module, concentrating solar heat collection and industrial waste heat can be integrated with the RSOC module to reduce the electrolysis power consumption. The closed CO2 network uses pressurized low-temperature CO2 as the circulating working fluid for the regional heating and cooling network. It can fully utilize the waste heat of the RSOC and natural cold and heat resources on the source side; at the end, it greatly improves the heating and cooling capacity of the network through phase change heat transfer to achieve passive cooling of users, and at the same time couples with a water source heat pump to meet different-grade heating demands, with net zero carbon emissions throughout the process.

The invention discloses a preparation method of an h-BN / BMSC daytime radiation refrigeration material, which comprises the following steps: (1) blending 39.9-66.5 parts by mass of few-layer h-BN nanosheets and 133 parts by mass of light calcined magnesia, and slowly stirring to obtain a mixed material; (2) dispersing an additive into 61 parts by mass of a magnesium sulfate heptahydrate solution, uniformly mixing, adding into the mixed material in the step (1), and stirring at a high speed to obtain slurry; and (3) putting the slurry obtained in the step (2) into a mold, and curing at room temperature to obtain the few-layer h-BN / BMSC composite material. The prepared gelling-based composite material has good radiation cooling performance and heat dissipation performance in an outdoor high-temperature environment, and can be used as a radiation cooling heat dissipation material with the temperature higher than the environment temperature. The passive cooling heat dissipation plate has important significance in improving the working efficiency of outdoor electronic equipment in a high-temperature environment, prolonging the service life and guaranteeing the reliability of a system.

This application provides a layered, environmentally friendly waterborne radiative cooling coating composition, belonging to the field of radiative cooling. The coating composition includes a waterborne radiative cooling primer, a topcoat, and a clear coat. The primer comprises 20-50 parts of a first waterborne emulsion, 10-20 parts of a narrow bandgap optical scatterer, and 10-20 parts of a wide bandgap optical scatterer. The topcoat comprises 20-50 parts of a second waterborne emulsion and 30-60 parts of a wide bandgap optical scatterer. The clear coat comprises 20-50 parts of a third waterborne emulsion. This coating utilizes a synergistic layering of primer / topcoat / clear coat and optimized wide bandgap filler gradation to achieve high solar reflectivity and mid-infrared emissivity at a thinner film thickness, resulting in significant passive cooling. The all-waterborne system disperses and dries at room temperature, resulting in low energy consumption and no VOC risk. The layered structure enhances adhesion, weather resistance, and self-cleaning properties. Compared to high-filler thick-coating processes, this application saves raw materials, energy consumption, and construction steps, extends maintenance cycles, and reduces total life-cycle costs.

The present invention discloses a photovoltaic panel passive cooling system that automatically absorbs water and evaporates it for cooling based on capillary action. The system comprises: a photovoltaic panel, a photovoltaic bracket, a wicking material, a water supply assembly, a water pipe, a water storage tank, and an adjustment and fixing assembly. The photovoltaic panel is fixedly mounted via the photovoltaic bracket and can be mounted horizontally, tilted, or vertically. The ends of the water supply assembly are arranged horizontally along the two side edges of the photovoltaic panel. The wicking material is attached to the back of the photovoltaic panel, with its lower end extending into the water supply assembly. The water supply assembly is connected to the water storage tank via a water pipe. The adjustment and fixing assembly connects the water supply assembly and the photovoltaic panel, respectively, and is used to adjust the vertical position of the water supply assembly. The present invention achieves energy-saving, water-saving, efficient, and reliable photovoltaic panel cooling, thereby improving the power generation efficiency and operating life of the photovoltaic system.

A passively-cooled personal computer includes a housing, a motherboard disposed within the housing, a central processing unit (CPU) mounted on the motherboard, and a passive cooler thermally coupled to the CPU. The passive cooler includes a plurality of heat pipes and at least one set of stacked fins. The heat pipes extend through the fins and transport heat from the CPU to the fins. The set of stacked fins has a large cross-section in a horizontal plane and a small cross-section in a vertical plane.

A system for processing a feed includes a membrane system configured to receive the feed and produce a concentrate and a permeate, wherein the membrane system includes an active cooling system, a passive cooling system, or a combination thereof. Further, the system includes a heat exchanger in fluid communication with the membrane system and disposed upstream of the membrane system, such that the feed enters the heat exchanger prior to entering the membrane system, wherein the heat exchanger is configured to cool the feed and heat the concentrate by transferring heat from the feed to the concentrate.

The invention discloses a solid waste-based micro-nano radiation cooling coating and a preparation method thereof.The preparation method comprises the steps that fly ash and coal gangue serve as main solid waste raw materials, and after being subjected to ultra-fining and silane modification, the main solid waste raw materials and a phosphate exciting agent are subjected to chemical action to form an inorganic micro-nano gel matrix; nano-silica (SiO2) and barium sulfate (BaSO4) are cooperatively introduced as a spectrum regulation functional filler, and a multi-scale scattering structure and an intermediate infrared radiation channel are constructed, so that the radiation cooling effect of high solar reflectivity and high infrared emissivity is realized. The prepared coating has excellent spectral selectivity (the solar reflectivity is larger than or equal to 0.88, and the mid-infrared emissivity is larger than or equal to 0.95), high weather resistance (the 500-hour ultraviolet aging retention rate is larger than or equal to 95%) and remarkable passive cooling capacity (the temperature drop can reach 5-8 DEG C). The raw materials are wide in source, the preparation process is simple, a large amount of building solid waste or industrial solid waste can be utilized, the low-cost and high-performance green radiation cooling coating is achieved, and a technical path capable of being popularized on a large scale is provided for building outer wall energy-saving transformation and urban heat island relieving.

This invention relates to the field of heat dissipation airflow mesh technology, and provides an airflow mesh for passive airflow cooling, including a pipe assembly, a clamping assembly, and an adjusting assembly. The pipe assembly includes a main pipe, a secondary pipe, an adjusting pipe, a vertical plate, and a horizontal plate. The clamping assembly, sleeved on the outer wall of the adjusting pipe, includes a fixed plate, a movable part, a rotating plate, and a support block. The adjusting assembly is located at one end of the main pipe and inside the main and secondary pipes, and includes a motor, a rotating shaft located at the output end of the motor, a drive bevel gear sleeved on the end of the rotating shaft away from the motor, a rotating part located on the end of the drive bevel gear away from the rotating shaft, and a spiral part sleeved on the rotating part. The function of the pipe assembly is to connect traditional heat dissipation pipes in sections, and through the combined effect of the septum effect and Bernoulli's principle, to compress the gaseous working fluid and release heat, which is conducted away through the metal thermally conductive material, thereby reducing the temperature of the airflow after it passes through by approximately 50 watts / m² / m / s.

The invention discloses an energy-saving air conditioning system for a building. The energy-saving air conditioning system comprises a ventilation shaft, a tunnel air pipe, a TLambert wall, a sky radiation layer and a heat storage layer. The heat storage layer is arranged at the top of the ventilation shaft; the TLambert wall is arranged on the sunny side of the ventilation shaft and is relatively close to the top of the ventilation shaft; the sky radiation layer is arranged on the shady side of the ventilation shaft and is relatively close to the bottom of the ventilation shaft; the tunnel air pipe is used for being communicated with or disconnected from the bottom of the ventilation shaft so that temperature difference can be formed in the ventilation shaft and air can be driven to flow from bottom to top. A condensation face is arranged in the ventilation shaft, and the condensation face is located on an air flowing path and used for dehumidifying air. A coupled passive cooling and dehumidifying building energy-saving air conditioning system is formed by tunnel air, sky radiation, a Tembert wall, phase change heat storage and a condensing surface, and the cooling and dehumidifying effects can be achieved by completely depending on renewable low-grade natural energy without mechanical driving such as a fan or a compressor.

The invention discloses a radiation refrigeration material based on evaporative cooling synergistic enhancement and a preparation method and application thereof.The material comprises a radiation refrigeration layer, a moisture power generation layer and a base material supporting layer, and integration of three passive cooling and energy collection functions of passive refrigeration, evaporative cooling and moisture power generation is achieved on fabric; the limitation that all functions exist independently and are difficult to cooperate in the prior art is broken through, the three functions are organically combined and synergistically interacted on the same fabric platform, a complete energy closed-loop system of passive cooling, energy collection and active adjustment / sensing is achieved, energy circulation of the environment and the human body is completely relied on, and the energy utilization rate is improved. And a brand-new functional solution is provided for the wearable device.

The invention relates to the technical field of air conditioners, in particular to an air conditioning device with internal air water circulation passive cooling, which comprises an air conditioner, the air conditioner comprises an indoor unit, an outdoor unit and a connecting pipeline, the outer wall of the connecting pipeline is provided with a circulation mechanism, and the outer wall of the indoor unit is provided with a passive cooling mechanism; the circulating mechanism comprises a flow guide pipe fixedly connected into the condensation pipe in the connecting pipeline, a filtering tank is fixedly connected to the end, away from the connecting pipeline, of the outer wall of the flow guide pipe, and a piston plate is slidably connected into the filtering tank. The indoor humidity is relatively low, and the requirements of a user cannot be met.

The present invention relates to a passive cooling system comprising a radiative heat exchanger and a convective heat exchanger comprising a heat transfer fluid. The radiative heat exchanger comprises a glass substrate having at least a silver reflective layer comprising at least ≥700mg / m2 of silver.

The application discloses a low-energy-consumption passive heat dissipation system for supercomputing / data centers, wherein the top end of each type of containerized extensible case is connected to one end of a non-activated cooler through a pipeline, the other end of the non-activated cooler is connected to one end of a liquid distribution system through a pipeline, and the other end of the liquid distribution system is connected to the bottom end of each type of containerized extensible case, so as to form a closed pipeline system. The heat dissipation system adopts an "insulation cooling liquid immersion cooling" + "separated heat pipe" + "high-efficiency compact condenser" heat and mass transfer process, is of passive heat dissipation throughout, greatly reduces the heat dissipation power consumption of the supercomputing / data center, and can realize an ultra-low PUE value. In addition, the system can realize higher compactness of architecture assembly and reduce the space occupation scale of the supercomputing / data center. The heat dissipation system has high heat dissipation power, high heat dissipation capacity expandability, fast and convenient computer on / off operation, energy saving and environmental protection.

Method for operating a RESS heating system (12) in a vehicle (10) comprising a coolant circuit (16) for passing a coolant through a rechargeable energy storage system (RESS) (44) and a refrigerant circuit (14) designed to selectively cool the coolant flowing through a radiator (38) in the coolant circuit (16), the method comprising the following steps: (a) Determining a current target temperature range for the RESS (44) based on at least one current vehicle operating mode and a current ambient temperature, wherein the target temperature range is variable based on the current vehicle operating mode and the current ambient temperature; (b) Determining a temperature of the RESS (44); (c) Determine whether the temperature of the RESS (44) needs to increase or decrease to remain within the current target temperature range; (d) if it is determined that the temperature of the RESS (44) needs to increase, determine whether to use active heating or passive heating of the coolant, with active heating using a greater amount of energy over a shorter period than passive heating; (e) Activating the active heating or passive heating of the coolant determined by step (d); (f) if it is determined that the temperature of the RESS (44) needs to decrease, determine whether to use active or passive cooling of the coolant, with active cooling using a greater amount of energy over a shorter period than passive cooling; and (g) Activating the active cooling or passive cooling of the coolant determined by step (f), characterized by the fact that then, when passive cooling is activated in step (g), the rate of change of the coolant temperature over time is monitored and compared with a desired passive cooling capacity, and the switch from passive cooling to active cooling occurs when the rate of change of the coolant temperature is below a predetermined threshold and the desired passive cooling capacity is not achieved, and then, when passive heating is activated in step (e), the rate of change of the coolant temperature over time is monitored and compared with a desired passive heating output, and the switch from passive heating to active heating occurs when the rate of change of the coolant temperature is below the predetermined threshold and the desired passive heating output is not reached.