102 results about "Radiant cooling" patented technology

The invention discloses a radiation refrigeration coating as well as a preparation method and application thereof, and relates to the technical field of material preparation. The preparation method comprises the following steps: sintering hexagonal boron nitride, and removing boron oxide to obtain modified boron nitride powder; the preparation method comprises the following steps: reacting supramolecular polysiloxane with methoxypolyethylene glycol to obtain hyperbranched polysiloxane; the modified boron nitride powder and hyperbranched polysiloxane are subjected to hydrolysis on boron nitride under the alkaline condition, and silane modified boron nitride is obtained; the silane modified boron nitride is added into a polyurethane coating matrix to form the radiation refrigeration coating. The silicon-oxygen modified group is introduced to the surface of the boron nitride, so that the interaction between the boron nitride and the coating group is greatly improved, and the stability of the coating is improved; the coating can be cured under different environmental conditions, and construction on power equipment is facilitated; the formed radiation refrigeration coating is high in sunlight reflectivity, high in mid-infrared emissivity and high in heat dissipation capacity for power equipment.

The invention relates to a solar PV / T circulating system integrating thermochemical adsorption cold storage and radiation cooling. The solar PV / T circulating system comprises loop heat pipe circulation which comprises an integrated radiation cooling PV / T assembly, a photovoltaic controller and a working medium pump. The PV / T assembly is of a turnover structure, the front face of the PV / T assembly is used for absorbing sunlight radiation, and the back face of the PV / T assembly is used for radiation heat exchange to cool the refrigerant. The vapor compression refrigeration cycle comprises a direct-current variable-frequency compressor, a condenser, a first evaporator and a plate heat exchanger; the thermochemical adsorption cold storage cycle comprises an adsorption cold storage unit, a liquid ammonia storage tank and a second evaporator; wherein an adsorbent capable of adsorbing ammonia gas and desorbing and releasing the ammonia gas is loaded in the adsorption cold storage unit. Compared with the prior art, the solar PV / T circulating system has the advantages that collaborative operation of solar photovoltaic cold supply and photo-thermal cold storage can be achieved, the solar energy utilization rate is increased, and all-weather and stable cold supply of the data center can be guaranteed.

The invention discloses an intelligent optimized variable water temperature anti-condensation control method for a radiant cooling system, and relates to the technical field of radiant cooling system control. According to the intelligently-optimized variable-water-temperature anti-condensation control method for the radiant cooling system, through multi-parameter comprehensive monitoring and an intelligent prediction model, the condensation risk can be predicted in advance and adjusted, the response speed is high, the hysteresis of an existing algorithm is avoided, the condensation phenomenon is effectively prevented, a partition control strategy and a dynamic feedback adjustment mechanism are combined, and the control accuracy is high. System parameters can be accurately adjusted according to different areas and real-time conditions, the control precision is high, it is ensured that the radiation surface temperature is always higher than the dew point temperature, the reliability and comfort of the system are improved, the dehumidification system is cooperated to reduce the condensation risk, meaningless operation of dehumidification equipment is reduced, and the overall energy efficiency of the system is improved; the system has a good energy-saving effect, is suitable for various types of radiant cooling systems, and has wide popularization and application values.

The invention discloses a radiation cooling exterior wall brick and a preparation process thereof, and relates to the technical field of ceramic bricks. The radiant cooling exterior wall tiles include a body, a base glaze layer, a pattern layer and a protective glaze layer from the inside to the outside. The base glaze layer includes the following components in parts by mass: 40-60 parts of base glaze ceramic base glaze, 15-35 parts of cooling powder, 6-12 parts of calcined talc, 4-8 parts of calcined zinc oxide, 3-6 parts of dolomite, 2-4 parts of fluorite, 3-6 parts of calcined kaolin, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water; the protective glaze layer includes the following components in parts by mass: 60-70 parts of protective glaze ceramic base glaze, 10-20 parts of cooling powder, 5-10 parts of albite, 3-5 parts of calcined talc, 2-4 parts of calcined zinc oxide, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water. The present invention adjusts the component ratio of the base glaze layer and the protective glaze layer and simultaneously adds cooling powder for compounding, thereby ensuring the basic performance of the wall tile while improving its reflectivity and emissivity to infrared and visible light.

The invention relates to the field of non-electric refrigeration coatings, and provides a non-electric refrigeration coating and a use method and a preparation method thereof in order to solve the problem that in the prior art, when the coating refrigeration effect is achieved through tetrahedral radiation refrigeration filler, the coating is difficult to be used in the use environment with large pressure. Comprising 40-60 parts of a polymer emulsion, 20-40 parts of a tetrahedral radiation refrigeration filler, 8-12 parts of titanium dioxide, 6-10 parts of hollow glass beads, 15-30 parts of silicon carbide, 6-10 parts of cubic boron nitride and 10-15 parts of water. The tetrahedral radiation refrigeration filler is zirconium oxide; the minimum height of the silicon carbide and the cubic boron nitride is greater than the maximum height of the tetrahedral radiation refrigeration filler. According to the invention, the refrigeration principle of the tetrahedral radiation refrigeration filler is utilized, the silicon carbide and the boron nitride are additionally added, the boron nitride has good visible light and ultraviolet reflectivity, and the high refractive index of the silicon carbide can make up for the reduction of the dosage of titanium dioxide and enhance scattering, so that the coating formed by the coating has better pressure resistance and wear resistance.

The invention discloses a cement-enhanced super-hydrophobic self-adaptive temperature control coating which comprises a thermochromic bottom layer and a radiation refrigeration surface layer, a primer adopted by the thermochromic coating is prepared from the following components in parts by weight: 3 to 6.6 parts of composite resin matrix, 0.4 to 1.2 parts of filler, 11 to 15 parts of thermochromic powder and 10 to 15 parts of organic solvent; and finish paint adopted by the thermochromic coating is prepared from the following components in parts by weight: 50 to 55 parts of SiO2 dispersion liquid, 2 to 9 parts of white cement slurry, 5 to 8 parts of hydrophobic modifier, 6 to 10 parts of low-surface-energy substance and 7 to 11 parts of migration-anchoring dual-function additive. The coating system disclosed by the invention can realize efficient cooling in a high-temperature environment, can keep thermal insulation performance in a low-temperature environment, has mechanical stability and self-cleaning performance required by long-term outdoor application, and is wide in applicability.

The invention discloses a boron-reinforced cement-based radiation refrigeration composite material and a preparation method thereof, and belongs to the technical field of building materials.During preparation, Portland cement, ceramic micro powder and other powder are evenly mixed to obtain mixed powder; uniformly mixing the mixing water with the mixed powder, and fully stirring to obtain slurry; hardened cement paste with directional pores is obtained through an ice template method, and the boron-reinforced cement-based radiation refrigeration composite material is obtained after the hardened paste is subjected to high-temperature treatment. According to the preparation method, freezing forming and high-temperature treatment of an ice template method are combined, so that the radiation refrigeration capacity is obviously improved, the problem of insufficient material strength caused by freezing forming is avoided, and the prepared composite material has relatively high radiation refrigeration capacity and compressive strength.

The invention discloses glass with spectral selectivity, a window and an optical design method, and belongs to the technical field of glass. The glass with spectral selectivity comprises a radiation cooling layer, a photon structure regulation and control layer and a substrate which are sequentially arranged from the outer side to the inner side, the outer side is a heat energy incidence side, and the inner side is a side needing temperature control; the mid-infrared light emissivity of the radiation cooling layer is greater than or equal to 90%; the photonic structure regulation and control layer is designed based on an effective medium theory and optical topology transformation, and meets the following optical properties: the reflectivity to an ultraviolet band is greater than or equal to 80%, the transmittance to a visible light band is greater than or equal to 75%, and the reflectivity to a near-infrared band is greater than or equal to 80%. Independent and accurate management of ultraviolet, visible light and near-infrared bands can be achieved, meanwhile, the radiation cooling layer conducts active heat dissipation, and indoor temperature control balance is maintained.

The invention provides a water-based radiation cooling coating, a coating and a preparation method thereof, the raw materials of the coating comprise an inorganic filler, and the inorganic filler comprises a mesoporous material, a metal oxide and carbonate. The coating provided by the invention can effectively reflect sunlight and can effectively radiate heat in a passive manner, so that the cooling and energy-saving effects are realized.

The invention discloses a droplet nanometer friction / photo-thermoelectric hybrid power generation device and a preparation method thereof. The hybrid power generation device comprises a liquid drop power generator part and a photo-thermal power generator part, wherein the liquid drop power generator part is mainly formed by integrating a capacitor and liquid drop friction power generation, and the photo-thermal power generator part is mainly composed of a temperature difference semiconductor. The preparation method of the device mainly comprises the following steps: carrying out surface treatment on a zinc sheet, so that a layer of candle ash is uniformly attached to the surface of the zinc sheet to obtain the treated zinc sheet; uniformly coating a layer of polydimethylsiloxane (PDMS) on the surface of the candle ash, and heating in an oven for two hours for curing and forming; fixing a copper electrode on the surface of the PDMS, and welding a lead on the copper electrode and the zinc sheet; the temperature difference semiconductor and the zinc sheet are combined together through heat-conducting silicone grease; a radiation cooling plate is attached to the cold end of the temperature difference semiconductor; and wires are respectively welded at the hot end and the cold end of the temperature difference semiconductor. The droplet nanometer friction / photo-thermoelectric hybrid power generation device provided by the invention is simple in structure and convenient to manufacture, can continuously and stably output direct current voltage without depending on single weather, and has a wide application prospect.

Heat is passively removed from circuit breaker stabs in a circuit breaker panel (i.e., without the use of active components such as cooling fans), and transferred to the panel chassis for radiant dissipation. A thermally conductive, electrically insulating (TCEI) material is interposed between the breaker stabs and the chassis. The TCEI material both spreads heat from each breaker stab over a large area, and passively conducts the heat to the panel chassis. In some embodiments, heat spreaders attached to the breaker stabs and embedded in the TCEI material, and / or a main heat sink interposed between the TCEI material and the circuit breaker panel chassis, enhance the passive conductance of heat from the breakers to the chassis for radiant cooling.

The present application relates to the technical field of building thermal test, and provides an experimental device for coupling sky cold and hot radiation effects and a control method thereof.The device comprises a first radiation cooling component, a solar radiation component and an air cooling component, the first radiation cooling component is obliquely arranged on both sides and connected at the top to form a detection space, the air outlet of the air duct of the air cooling component is located at the bottom of the components on both sides, the air return port is opposite to the top, and the solar radiation component is fixed in the air duct away from the detection space on one side.The present application cooperatively arranges the obliquely combined first radiation cooling component, the air cooling component with air supply at the bottom and air return at the top, and the solar radiation component arranged in the air duct in isolation, constructs a detection environment balanced in cold and hot radiation, realizes coupling simulation of solar radiation heat effect and sky radiation cold effect, can more accurately test the performance of energy production type building envelope components, and solves the technical problem that the existing building thermal test device has low test precision and cannot meet the performance evaluation of energy production type building envelope components.

The invention particularly relates to a radiation refrigeration device. The radiation refrigeration device comprises an ultraviolet processing unit, a conduction unit and an infrared reflection unit which are sequentially arranged. In the solar radiation process, the ultraviolet treatment unit is used for treating ultraviolet radiation so as to prevent the ultraviolet radiation from entering the conduction unit, and the infrared reflection unit is used for reflecting infrared radiation. Through the combination of the ultraviolet processing unit and the infrared reflection unit, the ultraviolet radiation is processed by the ultraviolet processing unit, so that the ultraviolet radiation is prevented from being absorbed by the infrared reflection unit through the conduction unit, the infrared reflection unit is only used for reflecting the infrared radiation, and the purpose of prolonging the service life of the infrared reflection unit is achieved.

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.

The utility model discloses a subway station public area radiation cold supply system based on passenger flow distribution, which comprises a refrigeration device, a cooling water pump and a water chilling unit which are connected in sequence and form a circulation loop; an inlet of the water segregator is connected with the water chilling unit, a first outlet of the water segregator is connected with the fresh air conditioning unit, and a second outlet of the water segregator is connected with the radiation tail end cooling device through a water mixing temperature adjusting valve; the radiation tail end cooling device comprises assembly type radiation cooling suspended ceiling plates connected with suspended ceiling main keels at the tops of a station hall public area and a platform public area of a subway station. A first inlet of the water collector is connected with a water return pipeline of the fresh air conditioning unit, and a second inlet of the water collector is connected with the water mixing temperature adjusting valve and a water return pipeline of the radiation tail end cooling device at the same time. The problems that a traditional cold source system excessively cools and excessively supplies fresh air in a tall and large space of a station hall and platform public area are solved.

The invention provides an automotive front gear / side gear / rear gear radiation refrigeration film with an adjustable refrigeration effect, and belongs to the field of films. The invention provides a radiation refrigeration film. The radiation refrigeration film comprises a heat insulation layer, a radiation refrigeration layer and a thermochromism layer which are sequentially and alternately stacked. The thermochromic layer comprises a first polymer matrix and metal element doped vanadium dioxide dispersed in the first polymer matrix, and the metal element is one of a zinc element, a titanium element, a tungsten element, a magnesium element and a molybdenum element. According to the automotive radiation refrigeration product with the adjustable refrigeration effect, the film thermochromic layer is in a dark semitransparent state at the high temperature, on one hand, the dark color can achieve the heat insulation effect through light absorption, and on the other hand, the cooling effect is achieved through the heat radiation effect; the thermochromism layer is in a light-color nearly-transparent state under the low-temperature condition, more visible light is allowed to enter the vehicle, and the temperature in the vehicle is increased.

The invention relates to the technical field of coatings, and particularly discloses a daytime radiation refrigeration coating and a preparation method and application thereof.The preparation method comprises the steps that a scatterer and hollow glass microspheres are added into water in advance and stirred to form initial slurry, and the mass ratio of the sum of the mass of the scatterer and the mass of the hollow glass microspheres to the mass of the water is 1: 5-1: 10; adding a long-chain molecular dispersing agent into the initial slurry, stirring, carrying out ultrasonic treatment, heating, evaporating and concentrating until the water content is 20-60%, so as to obtain concentrated slurry; and mixing a water-based paint resin emulsion, a wetting agent, a defoaming agent and a coalescing agent, adding the concentrated slurry, stirring for a preset time, adding a curing agent, and continuously stirring to obtain the daytime radiation refrigeration paint. After the prepared daytime radiation refrigeration coating forms a coating, the sunlight reflectivity of the coating is larger than 90%, and the infrared emissivity of the coating in an atmospheric window interval of 8-13 microns is larger than 90%.

This utility model provides a ceiling radiant cooling system, relating to the field of building environmental engineering. It includes multiple radiant cooling units, each with a first parallel flow channel. The first parallel flow channel includes a first liquid inlet, a first liquid outlet, a first liquid inlet channel, a first liquid outlet channel, and multiple first connecting channels. The first liquid inlet channel extends along a first direction and communicates with the first liquid inlet, while the first liquid outlet channel is parallel to and spaced apart from the first liquid inlet channel. The first connecting channels extend along a second direction and are parallel to and spaced apart between the first liquid inlet channel and the first liquid outlet channel; wherein the first connecting channels, the first liquid inlet channel, and the first liquid outlet channel are interconnected, and adjacent first connecting channels form multiple first spacer cavities, the width of which decreases along the first direction. This system effectively ensures the uniformity of the surface temperature of the radiant substrate, avoids localized overcooling, and further prevents condensation.

A kind of air deep dehumidification system and method using radiation refrigeration and solar photovoltaic, deep dehumidification system includes solution dehumidification device, for completing pre-dehumidification by the contact with solution dehumidifier to indoor return air;Rotary dehumidification device, including regeneration side and dehumidification side, dehumidification side carries out deep dehumidification to indoor return air after pre-dehumidification by solid hygroscopic material;First surface cooler, for reducing the temperature of dehumidification side exhaust air to meet the indoor temperature demand;First electric heater, for heating outdoor fresh air to meet the temperature required for solid hygroscopic material regeneration, then enter the moisture in adsorbed solid hygroscopic material in regeneration side;Solution regeneration device, connected with solution dehumidification device, to concentrate the solution dehumidifier after completing pre-dehumidification and regenerate;Radiation refrigeration device, provides cold source for first surface cooler;Photovoltaic light-heat integrated device, uses solar power generation to provide electric energy for first electric heater.The present application can meet different deep dehumidification demand.

The application discloses a kind of based on liquid crystal elastomer photothermal response photocatalysis / reflection rotary drive device, belong to flexible photothermal drive intelligent material and photocatalysis / photo reflection function device cross technical field.This device includes vane matrix, pulley, photothermal response drive component and fixer.The vane matrix one side load photocatalytic film, the other side load light reflection film;The pulley is fixed in vane matrix end, linear shrinkage force is converted into rotary moment, realizes vane directional rotation;The photothermal response drive component is graphene doped liquid crystal elastomer, under sunlight, light absorption heating shrinkage, pull pulley and drive vane 90 ° directional overturn, when there is no sunlight, elastomer resets, vane restores initial state, complete photocatalytic film and light reflection film non-contact automatic switching.This application does not need external energy input, only rely on solar drive, response is fast, service life is long, set photocatalytic degradation and radiation cooling double function in one, applicable to open environment photocatalytic purification and radiation cooling self-adapting function switching.

The invention relates to a transparent directional radiation refrigeration material and a preparation method thereof. The transparent directional radiation refrigeration material is formed by assembling a sawtooth grating film deposited with an infrared reflecting layer and an impedance matching layer filled with a sawtooth structure. The infrared reflecting layer is a transparent metal oxide layer. The transparent directional radiation refrigeration material satisfies the following conditions: the average transmittance of a visible light wave band is greater than or equal to 65%; the average emissivity difference value between the high emission side and the low emission side of the middle infrared band is larger than or equal to 40%. Compared with the prior art, the radiation cooling material disclosed by the invention has high transmittance in a visible light wave band and asymmetric directional high emissivity in a middle infrared wave band, so that the radiation cooling effect of the building facade transparent enclosure structure can be improved; the problem that the radiation refrigeration performance is limited due to the omni-directional high emissivity of traditional glass of a building facade is solved, and the energy-saving effect of a facade window can be improved.

The utility model relates to the technical field of outdoor charging station sun shading and heat dissipation, and particularly discloses a charging station sun shading and heat dissipation product based on a radiation refrigeration film, which comprises a sunshade main body, a radiation refrigeration film and a radiation refrigeration film, the heat conduction pipe is positioned in the sunshade main body; the radiation refrigeration film is attached to the upper surface of the sunshade main body in a covering mode. According to the charging station sunshade heat dissipation product based on the radiation refrigeration film, passive refrigeration characteristics of the radiation refrigeration film can be fully utilized, power-consumption-free heat dissipation and cooling of the charging station are achieved, and the energy-saving and environment-friendly heat dissipation and cooling effects are achieved.

This invention belongs to the field of coating technology and discloses an anti-aging radiation-cooling coating, coating layer, and its application and coated products. The radiation-cooling coating of this invention includes a base coat and a top coat; by weight, the base coat includes: 10-80 parts composite reflective particles, 5-20 parts hexagonal boron nitride nanosheets, 5-50 parts film-forming resin, 20-80 parts solvent, 0.05-10 parts dispersant, and 0.1-10 parts curing agent; by weight, the top coat includes: 10-80 parts composite alumina, 5-20 parts fluorosilane-modified silica, 5-60 parts film-forming resin, 20-80 parts solvent, 0.05-10 parts dispersant, and 0.5-30 parts curing agent. The radiation-cooling coating of this invention combines high solar reflectivity, excellent UV blocking properties, and long-term aging resistance, and can inhibit photocatalytic reactions from the source, achieving a balance between high reflectivity and ultra-long weather resistance.

The invention discloses a multi-split air conditioning system with radiant cooling and heating functions, which comprises a multi-split indoor unit and a ground radiation coil pipe, and is characterized in that the ground radiation coil pipe and the multi-split indoor unit are formed through a cooling / heating control loop, and the multi-split indoor unit and the ground radiation coil pipe are combined for cooling under the cooling working condition in summer; in winter heat supply working conditions, ground radiation coil pipe heating and multi-split air conditioner indoor unit heating are preferentially adopted for assistance. The configuration capacity of the multi-split indoor unit is reduced, the noise of the air conditioner is reduced, the comfort of the air conditioner is improved, and the energy-saving purpose is achieved.

This invention belongs to the field of textile fiber technology and discloses a radiation-cooling composite yarn and its preparation method. The radiation-cooling composite yarn includes an elastic core, an intermediate covering layer, and an outer layer; the intermediate covering layer covers the outside of the elastic core; the outer layer covers the outside of the intermediate covering layer and includes a radiation-cooling nanofiber membrane. This invention provides a radiation-cooling composite yarn comprising an elastic core, an intermediate covering layer, and an outer layer arranged in three layers; the outermost radiation-cooling nanofiber membrane can efficiently reflect sunlight and radiate heat outward through atmospheric windows, achieving passive cooling of the fabric; simultaneously, when the human body temperature is lower than the outdoor temperature, the fabric has a certain degree of heat retention due to the presence of still air inside the elastic core of the yarn; based on the yarn composition, the movement of the human body can be tracked by utilizing the law of yarn elongation change and its resistance change.

This invention discloses a high-strength passive daytime radiation cooling film and its preparation method, belonging to the field of functional polymer materials and thermal management technology. The film has a bilayer composite structure, including an upper reflective layer and a lower emitting layer. This invention employs an integrated process of melt blending-lamination-biaxial stretching-induced phase separation-extraction pore-fixing. Through a process design of stretching followed by extraction and a hierarchical biaxial stretching strategy, it achieves highly oriented molecular chains to enhance mechanical properties while precisely constructing a multi-level structure with both nanopores and micropores. The resulting film exhibits an average reflectivity >93% in the solar radiation band (0.25–2.5 μm), an average emissivity >95% in the atmospheric window (8–14 μm), a thermal conductivity <0.1 W / (m·K), and a tensile strength >30 MPa. This invention solves the technical bottleneck of achieving high reflectivity, high emissivity, low thermal conductivity, and high strength simultaneously in radiation cooling materials, and can be widely applied in building energy conservation, outdoor equipment thermal management, and electronic device heat dissipation.

The invention discloses a radiant cooling plate assembly applied to a space pump drive fluid loop system. The assembly comprises three or more odd number of radiant cooling plate single plates, and the central radiant cooling plate single plate is fixedly connected with a spacecraft body; each single plate comprises a frame, a rigid fluid pipeline and a flexible radiation film, the rigid fluid pipeline is composed of a liquid inlet main pipeline, a liquid return main pipeline and a plurality of parallel branch pipelines and cooperates with the frame to form a supporting structure, and the flexible radiation film covers the pipelines and is used for radiation heat dissipation. In the launching stage, all the single plates are stacked and folded and locked to a spacecraft body through a pressing and releasing mechanism. In the on-orbit stage, after the pressing and releasing mechanism is unlocked, the single plates are unfolded in different time sequences through the on-orbit unfolding mechanism, and finally the single plates are symmetrically distributed with the center line of the central single plate as the symmetry axis and are kept coplanar. Through the design of the symmetrical configuration, the rigid-flexible composite structure and the parallel flow channels, the envelope adaptability of the launching stage and the heat dissipation efficiency and the structural stability of the on-orbit stage are considered, and the heat management requirement of the high-power spacecraft is met.

The invention discloses a flexible radiation cooling plate for space, and belongs to the technical field of spacecraft thermal management. The flexible radiation cooling plate comprises at least one radiation cooling plate single plate, and each radiation cooling plate single plate is composed of a frame, a rigid fluid pipeline and a flexible radiation film. Wherein the rigid fluid pipeline is fixed on the frame and cooperates with the frame to form an integral supporting structure, the rigid fluid pipeline specifically comprises a liquid inlet main pipeline and a liquid return main pipeline which are oppositely arranged on the edges of the two sides of the frame, and a plurality of branch pipelines which are parallelly connected between the liquid inlet main pipeline and the liquid return main pipeline at intervals, and a parallel flow channel structure is formed; the flexible radiation film covers the rigid fluid pipeline and is used for transmitting heat carried by a working medium flowing through the pipeline to the space environment in a heat radiation mode. Through the rigid-flexible composite modular structure and the parallel flow channel design, the effects that the heat dissipation area can be expanded, and heat transfer is uniform and efficient are achieved, and the comprehensive heat dissipation requirements of a high-power spacecraft for the large heat dissipation area, light weight and high reliability are met.

The application discloses a direct expansion type radiation cooling terminal, a dew prevention method and a cooling system, and mainly relates to the technical field of building air conditioners and radiation cooling. The application discloses a direct expansion type radiation cooling terminal, a dew prevention method and a cooling system, and mainly relates to the technical field of building air conditioners and radiation cooling. The application discloses a direct expansion type radiation cooling terminal, a dew prevention method and a cooling system, and mainly relates to the technical field of building air conditioners and radiation cooling. The application discloses a direct expansion type radiation cooling terminal, a dew prevention method and a cooling system, and mainly relates to the technical field of building air conditioners and radiation cooling. The application discloses a direct expansion type radiation cooling terminal, a dew prevention method and a cooling system, and mainly relates to the technical field of building air conditioners and radiation cooling.

The utility model relates to the technical field of energy, and discloses a cooling water pipeline for enhancing heat dissipation of cooling water, which comprises an inner pipeline, a pipeline outer wall is fixedly connected to the outer side in the inner pipeline, a plurality of annular fins are mounted in the pipeline outer wall, radiation refrigeration coatings are arranged on the outer sides of the annular fins and the inner pipeline, and the radiation refrigeration coatings are arranged on the outer side of the inner pipeline. One end of the pipeline outer wall is fixedly connected with a connecting assembly, the outer side of the pipeline outer wall is fixedly connected with a first flange plate, the outer side of the pipeline outer wall is fixedly connected with a second flange plate, and four connecting holes are formed in the second flange plate. According to the cooling water pipeline, the inner pipeline and the annular fins are matched with the radiation refrigeration coating, the heat dissipation area is increased, cooling water is dissipated in the transportation process, the heat dissipation performance of the cooling water pipeline is improved, the energy-saving performance of the cooling water pipeline is improved, and the cooling water pipeline has important economic value and social value and is easy to apply and popularize.