349 results about "Atmospheric water" patented technology

A method for retrieving tropospheric wet delay and atmospheric water vapor content over polar sea ice with TDS-1 satellite grazing angle spaceborne GNSS-R is provided, including: Si, obtaining TDS-1 GNSS-R raw intermediate frequency signal data, VMF3 grid data, GPT3 grid data and ERA5 data; S2, correcting an error of tropospheric wet delay estimation of grazing angle spaceborne GNSS-R; S3, constructing a grazing angle spaceborne GNSS-R tropospheric wet delay estimation model; S4, calculating grazing angle spaceborne GNSS-R ZWD; S5, calculating a Tm value of a target point based on GPT3 model, substituting the Tm value into a conversion factor II, and combining calculated GNSS-R ZWD to obtain a GNSS-R IWV estimated value; and S6, verifying inversion performance of GNSS-R ZWD and integrated water vapor (IWV) by using reference data.

The invention discloses a hydrophobic-hydrophilic Janus water collecting film and an efficient preparation method thereof, and belongs to the field of water collecting materials. An electrostatic spinning process is adopted, and a hydrophobic polymer is accurately deposited on the surface of a hydrophilic substrate in the form of a nanofiber array, so that the Janus composite membrane with an asymmetric wetting gradient structure is successfully constructed. The unique double-sided wettability difference drives the liquid drops to realize directional transmission, and the core mechanism of the liquid drops is derived from capillary force regulation and control caused by interfacial wetting potential energy difference. The Janus membrane shows excellent performance in the aspect of air moisture trapping, the ultra-fast moisture absorption characteristic and the surface regeneration capacity are achieved, and compared with a traditional single-layer hydrophilic membrane, the water collecting efficiency is remarkably improved by 110%. A one-step forming process is adopted for preparation, the diameter of the nanofibers is controllable, complex post-treatment procedures are not needed, and energy consumption required by equipment is low. The high-performance water collecting film has important application value in the fields of atmospheric water taking in arid regions, dehumidification of precise instruments and the like.

Described are compositions for use as and methods for generating water harvesting material. The disclosed compositions can include a thermoresponsive gel network, a hygroscopic material, a copolymer, a photothermal agent, a crosslinking agent, or any combination thereof to generate or for use as an atmospheric water harvesting material. The disclosed compositions and methods advantageously allow for the efficient sorption and desorption of atmospheric moisture in low relative humidity environments. The atmospheric water harvesting material can be useful for generating potable water in environments for example, where access to clean water is limited.

The invention discloses a preparation method of atmospheric water collection porous gel, and belongs to the technical field of environmental ecological restoration, the method comprises the following steps: S1, dissolving a monomer, a foam stabilizer and a foaming aid in an acidic solution, and stirring to form a solution A; s2, mixing N, N '-methylene bisacrylamide, tetramethylethylenediamine and an initiator with the solution A to form a solution B; s3, mixing and stirring a foaming agent and the solution B, and standing for reaction to form a substrate C; s4, drying the matrix C, and immersing the matrix C into the solution D for reaction to form a precursor E; and S5, drying the precursor E to obtain the atmospheric water collection porous gel material. The problems that in the prior art, the preparation process is complex, and the foaming process is uncontrollable are solved.

The invention relates to the technical field of drought stress, and discloses a method for identifying a vegetation water stress dominant factor and determining a drought threshold value based on a Copula function. The method comprises the following steps: acquiring vegetation productivity, soil water content and atmospheric water deficit data of a research area in a research time period; respectively constructing marginal distribution functions of the vegetation productivity, the soil water content and the atmospheric water deficit by using a univariate parameter estimation method; respectively constructing a joint probability distribution function of the soil water content and the vegetation productivity and a joint probability distribution function of the atmospheric water deficit and the vegetation productivity based on the marginal distribution function by utilizing a Copula function; respectively calculating the maximum conditional probability of vegetation productivity loss caused by soil water content reduction and atmospheric water deficit rise by utilizing the joint probability distribution function, and determining a vegetation productivity water stress dominant factor; and calculating a drought threshold value of the vegetation productivity water stress dominant factor.

An atmospheric water generation system comprises water vapor consolidation systems configured to increase the relative humidity of a controlled air stream prior to condensing water from the controlled air stream. The water vapor consolidation system comprises a fluid-desiccant flow system configured to decrease the temperature of the desiccant to encourage water vapor to be absorbed by the desiccant from an atmospheric air flow. The desiccant flow is then heated to encourage water vapor evaporation from the desiccant flow into a controlled air stream that circulates within the system. The humidity of the controlled air stream is thereby increased above the relative humidity of the atmospheric air to facilitate condensation of the water vapor into usable liquid water.

A Beidou / GNSS-based real-time high-precision sea surface measurement method and a buoy, wherein by using free-to-use broadcast ephemeris freely broadcast by GNSS satellites, precise point positioning of China's Beidou satellites, and other high-precision service space signals, real-time centimeter-level element information comprising time, longitude, latitude, water level, wave height, wave period, wave direction, sea surface current velocity and direction, atmospheric water vapor content, and the like can be directly obtained. The information can be stored locally in a buoy or transmitted back by communication, and is suitable for real-time high-precision sea surface measurements in offshore and far-sea scenarios.

The invention provides a rainfall inversion method integrating GNSS (Global Navigation Satellite System) water vapor chromatography and a water conservancy rain-measuring radar. The rainfall inversion method comprises the following steps: collecting GNSS data, water conservancy rain-measuring radar data, meteorological data and geographic information; estimating the atmospheric water vapor content SWV on the GNSS oblique signal path; performing three-dimensional water vapor chromatography to obtain a grid water vapor density value; identifying an inversion factor; and training the neural network and carrying out rainfall inversion. According to the rainfall inversion method established by the invention, GNSS water vapor chromatography and water conservancy rain measurement radar data are effectively utilized, the correlation between space-time gaseous water and liquid water is comprehensively considered, the rainfall inversion process is optimized, and a new thought is provided for refined inversion of rainfall intensity and spatial distribution.

The invention discloses a water vapor chromatography modeling method and device based on GNSS-MET, and belongs to the technical field of atmospheric water vapor information inversion. According to the method, satellite signals and meteorological parameters are obtained through a GNSS-MET receiver, and the oblique path water vapor content (SWV) is calculated to serve as chromatography input; densely and uniformly distributed observation stations are selected to construct a chromatography area, and voxel grids are divided; a horizontal constraint is constructed by using Gaussian distance weighting, a vertical constraint is constructed in combination with a water vapor vertical index distribution characteristic, and ERA5 reanalysis data is introduced as a prior constraint, so that the limitation of a traditional sounding data constraint is solved; and resolving the tomographic equation through a singular value decomposition (SVD) method to obtain three-dimensional water vapor density distribution. According to the method, the high temporal-spatial resolution characteristic of ERA5 data is utilized, the precision and reliability of water vapor chromatography are remarkably improved, and the method is suitable for the fields of extreme weather prediction, meteorological monitoring and the like.

β-Ketoenamine covalent organic frameworks (COFs) provide remarkable water sorption capabilities and stable adsorption–desorption cycling, particularly under low relative humidity (RH) conditions.

An atmospheric water generation system comprises water vapor consolidation systems configured to increase the relative humidity of a controlled air stream prior to condensing water from the controlled air stream. The water vapor consolidation system comprises a fluid-desiccant flow system configured to decrease the temperature of the desiccant to encourage water vapor to be absorbed by the desiccant from an atmospheric air flow. The desiccant flow is then heated to encourage water vapor evaporation from the desiccant flow into a controlled air stream that circulates within the system. The humidity of the controlled air stream is thereby increased above the relative humidity of the atmospheric air to facilitate condensation of the water vapor into usable liquid water.

The invention belongs to the technical field of environment detection, and discloses a multichannel thermal infrared surface temperature inversion method and device, and the method comprises the steps: obtaining a spectrum response function, a water vapor image, a multispectral image, and an infrared image; matching the water vapor image with the infrared image to obtain the atmospheric water vapor content; constructing an analog data set of the atmospheric water vapor content and the channel transmissivity based on the spectrum response function; thermal infrared transmittances of the three thermal infrared channels are solved based on the simulation data set; calculating red light reflectivity and near-infrared reflectivity according to the multispectral image; calculating a normalized vegetation index and vegetation coverage according to the red light reflectivity and the near-infrared reflectivity; determining the surface emissivity based on the normalized vegetation index and the vegetation coverage; inputting the thermal infrared transmissivity and the surface emissivity into a Planck inversion formula; and solving an inverse function of the Planck inversion formula to obtain the surface temperature. According to the invention, the precision of temperature inversion can be improved.

An atmosphere water collection coupling water electrolysis hydrogen production system comprises an electro-catalysis hydrogen production subsystem, an atmosphere water collection subsystem and an electro-catalysis oxygen production subsystem, and the atmosphere water collection subsystem is located between the electro-catalysis hydrogen production subsystem and the electro-catalysis oxygen production subsystem; a moisture absorption material is placed in the atmosphere water collection subsystem, and one side of the moisture absorption material is in contact with a cathode catalyst placed in the electro-catalysis hydrogen production subsystem to generate an electro-catalysis hydrogen production reaction; the other side of the moisture absorption material is in contact with an anode catalyst placed in the electro-catalysis oxygen production subsystem to generate an electro-catalysis oxygen production reaction; the cathode catalyst and the anode catalyst are respectively connected with two electrodes of the energy input subsystem through wires, and under the driving of the energy input subsystem, an atmospheric water electro-catalytic decomposition reaction is carried out; the atmosphere water collection technology is coupled with electro-catalytic water decomposition, atmosphere water is decomposed to produce hydrogen while atmosphere water collection is achieved, the utilization rate of atmosphere water and the efficiency of electro-catalytic decomposition of atmosphere water to produce hydrogen are improved, and the in-situ hydrogen production device has the advantages of being environmentally friendly, capable of saving energy, sustainable and the like and is an ideal in-situ hydrogen production mode.

The invention relates to the field of photovoltaic power generation, and particularly discloses a climate self-adaptive photovoltaic cooling method and system based on interface evaporation, and the system comprises a hydrophilic and hydrophobic composite radiation refrigeration film which is used for capturing atmospheric moisture through a radiation refrigeration effect under a low-radiation condition to form a cooling water source; the bionic water conveying structure comprises a modified silicone tube and a juncus roemerianus bundle and is used for conveying the captured water to the high-level water tank through capillary action; according to the invention, by fusing interface evaporation and radiation refrigeration technologies, the system realizes efficient cooling and energy recovery of the photovoltaic module; under the condition of strong irradiation, the gradient wettability interface evaporation layer takes away waste heat of the module through directional water film flow, so that the temperature of the photovoltaic module is reduced, the photoelectric conversion efficiency is improved, and meanwhile, the daily generating capacity is increased; the cooling effect is obviously better than that of a traditional natural convection or phase change material cooling mode, and efficient heat transfer is achieved through phase change latent heat utilization of interface evaporation.

An atmospheric water generator device and a method of adaptive atmospheric water harvesting may include an air processing compartment having a heating member, a water adsorption / desorption compartment having a plurality of water adsorption beds configured to receive an air flow; a condensation compartment having a condenser; a water collection compartment; a controlling unit having a plurality of sensors configured to sense climate conditions, and a controller; and a power generation and storage unit configured to provide the air processing compartment, the water adsorption / desorption compartment, the condensation compartment, the water collection compartment, and the controlling unit with the required electrical energy to operate. The heating member in the air processing compartment is configured to heat the air flow passing through the water adsorption / desorption compartment. A method of generating water may use the atmospheric water generator device.

The present disclosure is directed to devices, systems, and products for attracting, capturing and converting atmospheric water vapor into useful liquid water utilizing thermal dynamic processes such as deposition, phase change states and fusion.

Provided herein are water harvesting systems, as well as methods using such systems, for capturing water from surrounding air. The systems and methods use water capture materials to adsorb water from the air. For example, the water capture materials may be metal-organic-frameworks. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

The invention provides an atmospheric water vapor detection method and system based on a satellite, and relates to the technical field of satellite remote sensing, and the method comprises the steps: obtaining satellite remote sensing data and solar radiation angle data of a target area; performing correction processing according to the satellite remote sensing data and the solar radiation angle data to obtain corrected radiation data; establishing an atmospheric radiation transmission model according to the corrected radiation data, and generating radiation simulation data; performing water vapor inversion processing according to the radiation simulation data, and calculating to obtain vertical distribution data of water vapor in the atmosphere; and performing three-dimensional interpolation processing according to the vertical distribution data to obtain three-dimensional hierarchical water vapor monitoring data. According to the method, the radiation error in the satellite remote sensing data is corrected by using the solar radiation projection model, so that the radiation error problem caused by ground reflection and the sunlight angle is solved; morphological prediction is carried out on the missing area through a topology analysis technology, fitting filling is carried out in combination with neighborhood water vapor data, and the accuracy and reliability of a monitoring result are improved.

The invention discloses a GNSS (Global Navigation Satellite System) single-station real-time atmosphere profile monitoring method, system and equipment, and relates to the field of GNSS atmosphere detection. The method comprises the following steps: processing observation data of a single GNSS observation station in real time, and obtaining water vapor information carried by a GNSS signal; discretizing a space region where a GNSS observation station is located, and calculating an inclined path water vapor observation value of a GNSS side signal by using a water vapor height factor model; an observation equation set of water vapor pressure parameters is established, atmospheric water vapor pressure parameter information is solved by using an optimization algorithm, and the water vapor pressure parameters are subjected to precision evaluation; building an inversion model of multiple meteorological parameters such as atmospheric specific humidity, atmospheric humidity refractive index, atmospheric water vapor density and the like based on the meteorological physical function relationship; and finally, performing external precision test on various atmospheric water vapor profiles by using the parallel sounding station meteorological data of the GNSS observation station. According to the invention, a single GNSS observation station is used to realize all-weather and high-precision inversion of a plurality of atmospheric parameter vertical profiles.

An atmospheric water generation system comprises water vapor consolidation systems configured to increase the relative humidity of a controlled air stream prior to condensing water from the controlled air stream. The water vapor consolidation system comprises a fluid-desiccant flow system configured to decrease the temperature of the desiccant to encourage water vapor to be absorbed by the desiccant from an atmospheric air flow. The desiccant flow is then heated to encourage water vapor evaporation from the desiccant flow into a controlled air stream that circulates within the system. The humidity of the controlled air stream is thereby increased above the relative humidity of the atmospheric air to facilitate condensation of the water vapor into usable liquid water.

To provide an atmospheric water production system which is low in noise, can fully and efficiently utilize energy, reduces energy consumption, and improves practicality. [Solution] The system includes an atmospheric water generating device and a control device, and the control device controls the operation of the atmospheric water generating system. The atmospheric water generating device includes a freshwater generating evaporator 101, a condenser, a compressor 103, a fan 104 and a noise reduction device 105. The condenser is connected to the freshwater generating evaporator 101, and the compressor 103 is connected to the freshwater generating evaporator 101 and the condenser, thereby circulating, cooling and supplying the refrigerant. The noise reduction device 105 is provided between the fan 104 and the compressor 103, and the fan 104 is provided between the condenser and the compressor 103. Air from outside passes through the freshwater generating evaporator 101 to generate water and cold air. After cooling the condenser, the cold air is blown into the noise reduction device 105 to reduce noise.

An apparatus, including a controller; an air intake system located at a vehicle; an air filtration system; an environmental control system; an air tank located at the vehicle; a water harvesting system; a water filtration system; and a water storage tank located at the vehicle. The controller controls an operation of the air intake system, the air filtration system, the environmental control system, the water harvesting system, and the water filtration system. The air intake system intakes air from an external environment, and the air filtration system filters or purifies the air. The environmental control system heats the air or cools the air. The air tank stores the air and the water harvesting system harvests water from the air. The water filtration system filters or purifies the water and the water storage tank stores the water.

The invention discloses a biomass nitrogen-doped derivative porous carbon material and a preparation method and application thereof, and belongs to the technical field of photo-thermal atmospheric water catching.The preparation method comprises the following steps that a carbon source and a nitrogen source are put into water to be subjected to an ultrasonic reaction, a reactant is subjected to hydrothermal treatment, and a solid product is obtained; carrying out steam etching and high-temperature annealing treatment on the solid product and metal salt in an inert atmosphere, and then sequentially carrying out acidizing treatment, grinding and drying to prepare the biomass nitrogen-doped derived porous carbon material. The biomass nitrogen-doped derivative porous carbon material prepared by the method has a rich pore structure and efficient adsorption-desorption performance, can replace an expensive MOFs material, optimizes the preparation path, improves the nitrogen doping efficiency and the material stability, remarkably reduces the cost and the environmental burden while ensuring the excellent atmospheric water collection performance, and has a wide application prospect. And the method shows more excellent industrialization prospects and sustainable development values.

The invention discloses a refined remote sensing atmospheric water vapor inversion method based on a GNSS and a Transform. The method comprises the following steps: acquiring OLCI remote sensing data, ERA5 meteorological data and GNSS-PWV data of a target area; performing quality control on the OLCI remote sensing data, and screening effective observation data; performing space-time registration on the OLCI remote sensing data, the ERA5 meteorological data and the GNSS-PWV data, and constructing a multi-dimensional feature vector; inputting the multi-dimensional feature vector into a Transform model for training, and learning a coupling relationship between features through a self-attention mechanism; and outputting an atmospheric precipitable water quantity inversion result based on the trained Transform model. According to the invention, the precision and spatial resolution of atmospheric water vapor detection are improved.

The invention provides a fiber fabric based composite material for atmospheric water collection and a preparation method and application thereof, and belongs to the technical field of atmospheric water collection materials. The highly ordered porous structure of the fiber fabric-based composite material improves the adsorption capacity and the mass transfer efficiency, the efficient regeneration process reduces the energy consumption, the good stability and durability prolong the service life of the fiber fabric-based composite material, the flexible system integration mode improves the expandability and the maintenance convenience, and the fiber fabric-based composite material has the advantages of simple structure, low cost and wide application prospect. The maintenance cost is reduced by the simple and convenient operation and maintenance mode, the cost of atmospheric water collection is reduced, and the fiber fabric-based composite material is not limited by natural environments such as atmospheric humidity, ambient temperature and wind power, and is wide in application range.

The invention relates to a collection device for radiation cooling and atmospheric water. The collection device comprises a foam frame; the central main plate is vertically arranged at the top of the foam frame; the collecting tank is arranged on the foam frame and located at the bottom of the outer surface of the central main plate; the central main plate comprises a polydimethylsiloxane coating which is vertically arranged and coated on the inner surface of the central aluminum plate and is used as an emission layer; the lubricating surface coating is coated on the outer surface of the central aluminum plate and is used as a condensation layer; the central main board is vertically mounted in the foam frame, the inner surface of the central main board is an emission layer, and the outer surface is a condensation layer; the emission layer reduces the temperature through radiation cooling, and the condensation layer promotes condensation of atmospheric water; the emission layer is covered with a polydimethylsiloxane coating; pDMS has good infrared emission performance, especially in an atmospheric transparent window of 8-13 microns, so that the PDMS can effectively radiate heat into the atmosphere to realize a cooling effect; and the condensed water drops drop into the collecting tank and are collected by the collecting tank.

The invention discloses a precipitation space downscaling method and device based on physical constraint and deep learning, and relates to the technical field of precipitation data processing. Comprising the following steps: forming training rainfall observation data by training low-spatial-resolution remote sensing rainfall data, training low-spatial-resolution meteorological data, training low-spatial-resolution soil moisture data, training high-spatial-resolution meteorological data and training high-spatial-resolution soil moisture data; determining a target rainfall downscaling model constrained by atmospheric moisture and rainfall soil moisture based on a spatial cross validation method; and forming to-be-downscaled rainfall observation data by using the to-be-downscaled remote sensing rainfall data, the high-spatial-resolution meteorological data and the high-spatial-resolution soil moisture data, and inputting the to-be-downscaled rainfall observation data into the target rainfall downscaling model to output target downscaling remote sensing rainfall data. Through a rainfall downscaling model, atmospheric moisture and soil moisture are combined with physical constraint and spatial cross validation, and spatial generalization is ensured to improve the rainfall data spatial downscaling precision.

The invention relates to a method for controlling at least one atmospheric water generation device. The method comprises generating (GEN1) at least one control indicator according to an estimate of weather conditions (EST1), an estimate of infrastructure water consumption requirements (EST3), an estimate of the available electrical energy (EST2), and an estimate of the performance (EST4) of the atmospheric water generation device.

A photonic hydrogel film (300) includes a substrate (602) and a hybrid cooling layer (304) attached to the substrate (602) and including a sodium polyacrylate (PAAS) material (308) forming a continuous film structure. The PAAS material (308) is hydrated by atmospheric water molecules so that chains of the PAAS material (308) are uncoiled for maintaining the continuous film structure. The PAAS material simultaneously reflects sunlight due to a porous structure and emits infrared radiation due to molecular vibrations of the chains of the PAAS material.