719 results about "Solar water" patented technology

The invention belongs to the technical field of water treatment, and particularly relates to a solar water evaporator and a preparation method and application thereof. According to the solar water evaporator provided by the invention, by using the carbon-based photo-thermal functional materials such as the carbon nanotubes, the micron porous hydrogel and the porous salt-inhibiting mineral powder, an efficient water transmission path and a steam escape path can be provided so as to improve the evaporation efficiency of the solar water evaporator; the porous salt inhibition mineral powder such as diatomite is doped to realize the porous physical salt inhibition mechanism and the surface charge repulsion effect of the mineral powder to effectively inhibit the salt, in addition, through the design of the conical structure with the height-diameter ratio being equal to 1.25, the automatic falling of the surface salt is effectively promoted through the gravity effect, the condition that the salt crystals are difficult to block the pore channels is reduced, and the service life is prolonged. And the evaporation rate stability of the solar water evaporator is improved, so that the technical problem of lack of a high-performance solar water evaporator in the prior art is solved.

The utility model relates to a solar water heater heat collecting pipe which comprises a pipe frame, a plurality of heat collecting pipes are evenly distributed on the pipe frame, a mounting frame used for cleaning the heat collecting pipes is further movably mounted on the pipe frame, supporting frames are fixedly mounted on the inner side wall of the mounting frame, mounting wheels are rotatably mounted between the supporting frames, and the mounting wheels are movably mounted on the inner side wall of the mounting frame. And banister brushes are fixedly mounted on the inner walls of the mounting wheels. According to the heat collecting pipe of the solar water heater, the mounting frame provided with the mounting wheels is slidably mounted on the pipe frame, and meanwhile, the sliding direction of the mounting wheels is consistent with the length direction of the heat collecting pipe, so that the mounting wheels can be pulled to slide relative to the heat collecting pipe at the same time when the mounting frame is moved; a plurality of heat collecting pipes can be cleaned at the same time through the banister brush on the inner side of the mounting wheel, traction is conducted through the transmission ring, the transmission belt and the servo motor, the mounting wheel can be made to rotate, and the cleaning efficiency of the banister brush is improved.

The invention discloses a method for improving photo-thermal conversion efficiency of a photo-thermal material under large-range light intensity, the photo-thermal material and a solar heat collector, and belongs to the field of solar evaporation water treatment. According to the technical scheme, the method comprises the steps that polyaniline particle-loaded carbon aerogel is prepared, the light intensity range is greatly widened to 10 sunlight intensities or above through a Fresnel lens, the corresponding relation between the material surface water evaporation rate and the temperature change is established, and the energy loss is reduced to the maximum extent by adding a foam side heat insulation layer; and the water evaporation rate of the photo-thermal material is improved. The method is applied to the aspect of solar water evaporation, and the problem that the water evaporation rate is low in an existing solar evaporation method is solved.

The invention discloses a water level and water quality dynamic monitoring management system and a water level and water quality dynamic monitoring management method, and particularly relates to the technical field of water level and water quality monitoring. And selecting an LSTM neural network, an RANSAC or a hybrid compensation algorithm thereof through a decision mechanism to carry out data correction. Meanwhile, an anomaly detection model is deployed at an edge node, and the model threshold is dynamically adjusted to improve the mutation recognition accuracy. And the cloud end constructs a hydrodynamic force-water quality coupling prediction model through multi-source data fusion to realize early warning of ecological risk events. The system is matched with solar energy-hydraulic power dual-mode energy supply and a LoRaWAN + 5G hybrid communication network, and is suitable for long-period automatic operation in an area without commercial power. The method has the advantages of intelligent data processing, adaptive compensation algorithm, flexible system deployment and the like, and is suitable for continuous monitoring and dynamic management of reservoirs.

The invention discloses an energy efficiency improving system for a shallow buried pipe heat exchanger. A closed or semi-closed heat storage area unit is arranged in a surrounding mode through area heat insulation plates. The heat storage area unit comprises a plurality of heat storage wells, a plurality of shallow water lifting wells, a plurality of deep water lifting wells, a plurality of solar water heaters, a heat storage water tank, a plurality of U-shaped vertical buried pipes and a ground source heat pump machine room; the buried depth of the regional heat insulation plate is arranged in soil of an earth crust constant temperature zone and penetrates through an earth crust daily variable temperature zone and an earth crust annual variable temperature zone from top to bottom, the buried depth H of the regional heat insulation plate is larger than or equal to H2 + 0.5-1 m, and H2 is the depth of the annual variable temperature zone; the heat storage well is of an inner and outer sleeve type hollow structure provided with a plurality of horizontal branch pipes shaped like a cross or a Chinese character'jing ', and the horizontal branch pipes are arranged in soil of a crustal annual variable temperature zone and a constant temperature zone. The buried depth H of the upper horizontal branch pipe is greater than or equal to H1 + 0.5-1m, and the buried depth H of the lower horizontal branch pipe is greater than or equal to H2 + 0.5-1m; h1 is the daily variable temperature zone depth, and H2 is the annual variable temperature zone depth.

The invention discloses a covalent bond reinforced and toughened graphene oxide composite membrane as well as a preparation method and application of the covalent bond reinforced and toughened graphene oxide composite membrane, an aqueous solution of sulfosuccinic acid (SSA) and a single-layer graphene oxide (GO) aqueous-phase dispersion liquid are orderly assembled into a graphene oxide composite membrane with a layered structure, and then a certain amount of hydrochloric acid is used for acidification to obtain the covalent bond reinforced and toughened graphene oxide composite membrane. GO and SSA are subjected to covalent bond cross-linking under the heating condition, the covalent bond cross-linked GO-SSA graphene oxide composite film can be obtained, and the maximum strength and toughness of the covalent bond cross-linked GO-SSA graphene oxide composite film are improved by about 3 times and 4 times respectively compared with those before modification. In addition, due to the fact that graphene oxide has excellent photo-thermal performance, the GO-SSA graphene oxide composite film can also be applied to a substrate of a solar water evaporator device. The water evaporation rate of the pure GO thin film under irradiation of one sunlight intensity is 1.65 kg.m <-2 >. H <-1 >, and the water evaporation rate of the GO-SSA graphene oxide composite film can be maximally increased to 2.11 kg.m <-2 >. H <-1 >. The material has a wide application prospect in the field of solar water distillation.

The invention provides an efficient solar water heater, and belongs to the technical field of solar water heaters. Comprising a support, and a base is fixed to the support and used for stably supporting the whole device. The reflecting plate is connected with a heat preservation water tank, the heat preservation water tank is installed on the top of the base, the reflecting plate is installed around the base and can rotate around the base, a vacuum heat collection pipe and a photoresistor are arranged on the side, facing the sun, of the reflecting plate, and the photoresistor is used for detecting the illumination intensity change and is connected with a fixed resistor in series. The voltage division circuit is connected to the two ends of a power supply and is used for generating different partial voltages according to the change of the resistance value of the photoresistor; the microcontroller is connected with the voltage division circuit and is used for detecting the change of the voltage at the two ends of the photoresistor in the voltage division circuit and judging whether the voltage exceeds a set threshold value or not; and the motor driver is connected with the microcontroller. According to the invention, the overall working efficiency can be improved by accurately tracking the sun.

The invention relates to the technical field of oil field produced water waste heat and gas utilization, in particular to an oil field produced water multi-energy fusion air heat exchange waste heat utilization device and process method. According to the technical scheme, an air-fuel integrated heat pump is installed in the middle of a front box of a container pry, three-phase power of a gas generator set is connected to a compressor through a line and a grid-connected controller, and flue gas is connected with a flue gas heat exchanger through a pipeline; heat generated by the gas generator set is connected with the economizer through cooling liquid for heat dissipation, and the energy storage water tank is connected with a condenser of the air source heat pump through a pipeline and a water pump. The wet curtain system is installed on the side face of the container pry and located on one side of an evaporator of the air source heat pump, and the solar water heater is installed on the top of the container pry and provides hot water for the spraying system. The device has the beneficial effects that low-grade produced water is subjected to heat exchange through air, the defect that a plate-shell heat exchanger is blocked by the produced water is overcome, and comprehensive utilization of waste heat, waste gas, solar energy and air energy of the produced water is achieved.

The invention relates to the technical field of comprehensive application of renewable energy sources, in particular to a multi-energy coupling energy supply system based on a zero-carbon building and a device thereof, and solves the problems that an existing energy system uses single energy, the energy supply effect is unstable, and energy is wasted. And current transmission in the line is greatly influenced by external low temperature. An energy supply system based on zero-carbon building multi-energy coupling comprises a solar power generation system, a heat supply system, a temperature detection module, a master control terminal and a wireless signal transceiver, and the heat supply system comprises a solar water heater and a heat pump. When hot water is supplied through the heat pump and the solar water heater, the conveying line of the solar photovoltaic panel is heated, so that the influence of low temperature on the conveying line of the solar photovoltaic panel is reduced, and the loss of current of the solar photovoltaic panel at a terminal in the conveying process is reduced.

The invention relates to the technical field of cluster operation, maintenance and fault diagnosis of a solar water heating system, and discloses a cluster operation, maintenance and fault diagnosis system of a solar water heating system based on digital twinning. The operation, maintenance and diagnosis system comprises a sensing terminal, a multi-source data processing and transmission module, a cluster operation and maintenance management module, a fault diagnosis module and a fault early warning module, and the sensing terminal comprises a data acquisition module, a radar integration module, a satellite positioning module, a Lora communication module and a direct current power supply module. The multi-source data processing and transmission module comprises an edge preprocessing engine and a protocol conversion gateway; the fault early warning module comprises a background server early warning unit and a maintenance information distribution unit; the data acquisition module comprises a temperature sensor, a flow meter, a pressure sensor and an irradiance instrument; through the system, the fault identification accuracy and the fault maintenance efficiency of the solar water heater can be improved.

The invention discloses a wall-mounted greenhouse solar water circulation heat storage device, and relates to the technical field of water circulation heat storage, the wall-mounted greenhouse solar water circulation heat storage device comprises a shell, a silk screen arranged on the back surface of the inner wall of the shell, an air blowing assembly arranged on the back surface of the shell and used for blowing out heat flow, and a storage battery arranged on the top surface of the shell, the storage battery is used for storing electric energy converted from solar energy, the first concentric-square-shaped frame is arranged in the middle of the interior of the shell, the circulating assembly is arranged in the first concentric-square-shaped frame and used for circularly heating water, the second concentric-square-shaped frame is fixed to the front face of the first concentric-square-shaped frame, and the shaft fan is fixed to the back face of the second concentric-square-shaped frame. The shaft fans are rotationally mounted at the top end and the bottom end of the interior of the second concentric-square-shaped frame correspondingly, airflow heated by the bent pipes is driven through the shaft fans, and therefore the problem that heat distribution in a greenhouse is unbalanced due to the fact that hot air blown out by the water circulation heat storage device is not uniform is solved.

The invention discloses a bionic tree-shaped evaporator based on hollow microtubes and application thereof, and relates to the technical field of solar water treatment.The bionic tree-shaped evaporator is prepared through the following steps that bacterial cellulose hybrid spinning solution serves as shell layer fluid, absolute ethyl alcohol serves as core layer fluid, the shell layer fluid and the core layer fluid are co-extruded into an ethyl alcohol coagulating bath, curing is conducted, washing is conducted with ethyl alcohol and deionized water in sequence to be neutral, and drying is conducted to obtain the bionic tree-shaped evaporator. A hollow hybrid microtube is obtained; and arranging and fixing the plurality of hollow hybrid microtubes on a bracket according to a tree-shaped branch structure to obtain the bionic tree-shaped evaporator. The bionic tree-shaped evaporator prepared by the invention has excellent mechanical flexibility, salt tolerance and purification efficiency, and provides a new material and a new scheme for efficient and sustainable solar seawater desalination and wastewater treatment.

The utility model relates to the technical field of hot water tanks, in particular to a photovoltaic phase change heat storage water tank which comprises a shell and an inner container, the inner container is fixedly connected in the shell, a baffle is fixedly connected in the inner container, and a phase change heat storage water tank is arranged in the space, located above the baffle, in the inner container. An electric heating water tank is arranged in the space, located below the baffle, in the inner container, the phase change water storage tank is filled with phase change heat storage balls, the upper end of the shell is fixedly connected with a ball discharging pipe opening used for adding the phase change heat storage balls into the inner container, two sets of electric appliance openings are formed in the side face of the shell, and a variable-frequency direct-current photovoltaic heating pipe and an alternating-current heating pipe are fixedly connected into the two sets of electric appliance openings respectively; direct current generated by the photovoltaic assembly directly drives the variable-frequency direct-current photovoltaic heating pipe to heat water in the electric heating water tank, the phase-change heat storage ball stores energy, heat energy is released when the temperature of hot water is insufficient, water in the inner container is heated, and the solar water heater can be stably used under various weather conditions and is good in heat energy storage effect.

The utility model discloses a solar thermal coupling microbial remediation device. The device comprises a submersible pump for pumping underground water; the liquid inlet end of the filter is connected with the liquid outlet end of the submersible pump through a water conveying pipe; the liquid inlet end of the solar water heater is connected with the liquid outlet end of the filter through a pipeline; the medicine preparation box group is used for preparing a repairing medicine and is connected with the liquid outlet end of the solar water heater through a water supply pipe; and the injection pipe is used for injecting the repairing agent prepared by the agent preparation box group into the to-be-repaired soil body, and is connected with the agent preparation box group. The microbial remediation device can meet the microbial reaction temperature, improves the remediation efficiency, saves the cost and is low in energy consumption.

The invention provides an unpowered phase change vaporization flat plate solar water heater, and belongs to the technical field of flat plate collectors. The unpowered phase change vaporization flat plate solar water heater comprises a heat preservation water tank and a heat collection flat plate, heat conduction water is injected into an inner cavity of the heat preservation water tank, a heat exchange pipe transversely penetrates through the heat preservation water tank, a closed red copper straight pipe and a closed header flow channel are fixed in the heat collection flat plate, and phase change heat conduction media easy to vaporize are injected into the red copper straight pipe and the header flow channel. A heat dissipation head inserted into the header runner is arranged at the end of the red copper straight pipe, a condensation head protruding upwards and penetrating out of the heat collection flat plate is arranged in the middle of the header runner, a heat absorption head connected with the inner cavity is arranged on the heat preservation water tank, and a heat exchange assembly for heat exchange is connected between the condensation head and the heat absorption head. The red copper straight pipes and the collecting pipe flow channels in the heat collecting flat plates are of a closed structure, phase change heat-conducting media in the heat collecting flat plates do not make contact with the outside, scaling is avoided, the heat collecting flat plates are resistant to low temperature, and heat-conducting water in the heat preservation water tank is not afraid of the influence of the low-temperature environment.

The invention provides a solar water desalination device and method. The solar water desalination device comprises a water collecting cylinder, multiple layers of evaporators are arranged in the water collecting cylinder, distillation plates are arranged among the evaporators, the distillation plates are sleeved with supporting rods, and the supporting rods are connected with the evaporators; a first collecting barrel is arranged on the evaporator, a foam rod is arranged in the first collecting barrel, the foam rod is sleeved with an evaporation column, an evaporation film is arranged at the top end of the first collecting barrel, heat insulation foam is arranged below the evaporation film, and a heating unit is arranged below the first collecting barrel; the outer diameter of the first collecting cylinder is smaller than the inner diameter of the water collecting cylinder. According to the solar water desalination device and method, the evaporation surface of the evaporation device is enlarged, and the water desalination flux is improved. Condensation heat is utilized to the maximum extent, and desalination efficiency is improved. Electric heating assists evaporation, and water desalination can still be continuously carried out under the condition of no light.

The invention discloses a preparation method of an efficient photo-thermal conversion black body membrane for solar seawater desalination, and relates to the technical field of solar seawater desalination. The preparation method comprises the following steps: (1) preparing a spinning solution; the preparation method comprises the following steps: dispersing a certain amount of polyacrylonitrile, zinc acetate, carbon nanotubes and carbon black in N-N dimethylformamide, and stirring to obtain a polyacrylonitrile / zinc acetate / carbon black / carbon nanotube mixed solution; and (2) spinning preparation. And spinning the spinning solution by using an electrostatic spinning device under a certain spinning condition to obtain the nanofiber membrane. And (3) growing the nanowire. The nanofiber membrane is subjected to heat treatment at a certain temperature, then the nanofiber membrane subjected to heat treatment is completely soaked in the growth solution, and hydrothermal growth is performed for enough time at a certain temperature. The efficient photo-thermal conversion nanofiber membrane is obtained. The high-efficiency photo-thermal conversion nanofiber membrane is prepared by combining an electrostatic spinning technology and a hydrothermal growth method, the solar energy absorption efficiency is high, the solar energy water evaporation rate is high, and surface salt crystals are few.

The invention discloses an oxide semiconductor plane p / n superstructure and a preparation method thereof. According to the method, a latticed mask is formed on the surface of an oxide thin film based on a photoetching process, O2 atmosphere annealing (100-300 DEG C, 15-40 min) is combined, the local oxygen vacancy concentration of a mask covering area and an exposed area is precisely regulated and controlled, and precise in-situ conversion of a p type (oxygen-rich area) and an n type (oxygen-poor area) in a homogeneous material is achieved. The planar p / n superstructure breaks through the strict limitation of a traditional vertical multi-junction structure on material doping and interface quality, the width of a depletion region is expanded to the micron order through the p / n homojunction arrays alternately distributed in the plane, and the bulk recombination effect of photon-generated carriers is remarkably inhibited. According to the method, an innovative technical route of photoetching-assisted in-situ construction of the planar multi-junction photoelectrode is created, the method has the advantages of interface atomic-scale lattice matching, simple process, high compatibility, accurate and controllable space charge distribution and the like, and a technical foundation is laid for non-assisted solar water decomposition, research and development of self-driven optoelectronic devices and the like.

A heating system for use in the solar powered heating of water. In one embodiment, the heating system is used in conjunction with a solar water farm to desalinate water. The water farm can be utilized on a variety of scales and can be applied to agricultural farms for large scale reclamation of deserts.

The invention discloses a manufacturing method of an offshore comprehensive energy system and equipment, and particularly relates to the technical field of ocean energy development, which comprises the following steps: constructing a medium-low water head pumped storage hydropower station connected with a power grid in the ocean; a tidal energy reservoir is built in the ocean, and a tidal energy connecting dam is built between the tidal energy reservoir and the pumped storage hydropower station; a solar water pumping device, a wind power water pumping device and a wave energy water pumping device are respectively arranged at preset positions of the tidal energy reservoir, the pumped storage reservoir dam of the pumped storage hydropower station and the tidal current energy connecting dam; multi-energy complementation and unified energy storage are achieved, tidal energy, tidal current energy, solar energy, wave energy and wind energy are integrated into the pumped storage reservoir through respective water pumping devices, intermittent and fluctuating ocean energy is uniformly converted into stable gravitational potential energy to be stored, and then concentrated power generation is conducted through the medium-low water head pumped storage power station. The problem of unstable power supply is solved, and the energy storage cost is reduced.

The invention discloses a divided water tank device for an internal heat exchanger of a split type solar water heater. Butt welding is carried out by utilizing an end enclosure of a stainless steel confined water bank inner bag; the end enclosure is used as the heat exchanger to play the role of a water tank partition board; the water tank is divided into independent divided cavities; the heat exchanger is sealed with the inner bag of the water tank; the adjacent cavity bodies communicate with each other via draught tubes; the medium circulation and the medium supplement, namely unconfined running of the heat exchanging part, are carried out safely and reliably via an upper circulating pipe and a heat collecting part; and the device can fully improve heat energy transformation and reduce heat loss.

To provide a photoelectric conversion element that has light resistance, heat resistance, and infrared light transmittance, and has excellent conversion efficiency.SOLUTION: A photoelectric conversion element includes a first substrate, a first electrode, a hole transport layer, a photoelectric conversion layer, an electron transport layer, and a second electrode, in this order. The first electrode includes a metal nanowire, and the hole transport layer includes a polymer of a hole transport material.SELECTED DRAWING: Figure 1

The invention discloses a combined cooling heating and power supply device based on a data center combined with solar energy, which comprises the data center, a solar water heater, a boiler, a steam turbine generator, a primary heat exchanger, a secondary heat exchanger and an absorption refrigerator, high-temperature steam is formed by further heating in a boiler and then enters a steam turbine generator to drive a generator to generate electricity, dead steam discharged after expansion acting enters a first-stage heat exchanger and is changed into high-temperature hot water after heat exchange, and the high-temperature hot water enters an absorption refrigerator, and low-temperature hot water flowing out of the absorption refrigerator enters a second-stage heat exchanger; and the cooled water is used as cooling water for the air conditioner of the data center. Compared with an existing data center waste heat utilization system, the system has the advantages that solar energy is introduced, renewable energy sources are utilized to further reduce power generation energy consumption, dead steam discharged after the steam turbine does work is utilized, the heat supply and cold supply requirements are met in combination with the absorption refrigerator, gradient utilization of energy is achieved, and the heat utilization efficiency is improved.

The invention provides a universal, simple and extensible method for preparing the covalent organic framework gel by utilizing a plurality of group protection strategies. An amino monomer containing a protecting group and an aldehyde group monomer are subjected to aldehyde amine condensation to obtain a COF gel material, so that the non-melting COF can be formed. The prepared material has the characteristics of high crystallinity, high porosity, good mechanical property, good solvent property, good freezing resistance and the like, and the COF organic hydrogel can be very conveniently subjected to structure and function design, can easily load various functional groups, and has great industrial application value. The prepared organic hydrogel can be easily converted into hydrogel, organic gel and aerogel through solvent exchange and freeze drying, and the gap between different types of COF gels is broken through. The water transmission performance and the water transmission state are measured through a solar photo-thermal water evaporation experiment, and the COF hydrogel rich in azobenzene groups has good solar energy absorption, photo-thermal conversion and water transmission performance, is equivalent to the most advanced material and has a great industrial practical application prospect.

The invention discloses a multi-source coupling middle-deep layer ground source heat pump system which comprises a heat pump unit, a user unit, a constant-pressure water supplementing unit, a middle-deep layer ground source unit, a heat exchange unit and an energy storage unit. The middle-deep layer ground source unit comprises a buried pipe buried in a middle-deep layer stratum, a ground source side water supply pipeline connected with the buried pipe, a ground source side water return pipeline and a ground source side circulating pump set. The energy storage unit comprises a solar heat collection unit, a solar water supply pipe and a solar water return pipe, the solar water supply pipe is connected with the ground source side water return pipeline, and the solar water return pipe is connected with the ground source side water supply pipeline. Solar energy, a middle-deep layer ground source heat pump and an air source heat pump are coupled together, multiple renewable energy sources are combined to achieve heating and cooling, cross-season heat storage can be conducted in a ground source, enough heat is provided for the heating season, then the heat taking requirement of the heating season is met, and the heating energy efficiency is improved; in summer, the air source heat pump unit can be used for cooling, so that a traditional medium-deep layer ground source heat pump system has a cooling function.

The invention discloses a condensation solar cement calcining kiln with a heat storage function and a working method thereof, and belongs to the field of energy and building material production, the condensation solar cement calcining kiln comprises a solar condenser, a cement calcining kiln, a solid heat storage material, a circulating heat release unit and a system control device, the solar condenser focuses solar energy through a daylighting opening of the cement calcining kiln, and cement clinker sintering is achieved; low-temperature gas discharged from the calcining kiln enters the raw material preheating tank to provide raw material preheating heat; the solid heat storage material in the kiln cavity absorbs sunlight and raw material radiant heat to store heat; when solar irradiation fluctuates, the circulating heat release unit enables air to exchange heat with a heat storage material, and high-temperature air required by continuous calcination is provided; the system control device regulates and controls the position, temperature and reaction process of the kiln body. Through integration of light condensation, heat absorption and heat storage, calcination of the zero-carbon cement is achieved, high-temperature CO2 gas and high-temperature air in the calcination process can be used for preheating raw materials, and gradient utilization of solar energy is achieved.

The invention provides a preparation method of an integrated MXene / PDA-coated MF-EF solar steam generator with a semi-cladding structure, and the method comprises the steps: S1, employing an HF etching method, and preparing MXene; s2, based on the prepared MXene, preparing an MXene / PDA photothermal conversion light absorption layer; and S3, preparing MXene / PDA (at) MF-EF on the basis of the prepared MXene / PDA. The MXene / PDA-coated MF-EF evaporator prepared by the preparation method disclosed by the invention shows good long-term stability and salt resistance. Considering that the MXene / PDA (at) MF-EF is economical, extensible and simple in preparation process, the MXene / PDA (at) MF-EF evaporator achieves production of clean water through the coordination effect of heat management and water management, and a feasible and stable alternative scheme is provided for solar water evaporation in various water environments. A solution thought is further provided for achieving the purpose that the solar-driven interface evaporation seawater desalination technology obtains fresh water in areas such as coastal areas and offshore islands, and a new way is provided for reasonable design of novel photo-thermal conversion materials.

The utility model discloses a split type refrigerator structure, which is characterized in that a first box body and a second box body are detachably connected, so that a user can independently carry the first box body for storing articles according to requirements, and does not need to carry the whole refrigerator structure. Therefore, the portable solar water heater is lighter and easier to carry under the conditions of outdoor activities, travel or limited space; the air cooling system is placed in the second box body, so that the storage space in the first box body can be maximized; due to the split type design, any part can be cleaned or maintained more easily, if the air cooling system goes wrong, only the second box body needs to be detached for maintenance, and the first box body for storing food does not need to be influenced; and the independent air cooling system can better adjust the temperature in the storage cavity, so that the freshness of the food is ensured. In addition, the first box body and the second box body which are different in size can be freely selected according to actual requirements, and therefore the optimal space utilization and energy consumption ratio are achieved.

The invention relates to a Janus structure wood-based solar water and electricity co-production evaporator based on metal organic framework modification and a preparation method of the Janus structure wood-based solar water and electricity co-production evaporator, and belongs to the technical field of solar interface evaporation materials. In order to solve the problem that an existing wood-based solar evaporator is poor in water photovoltaic power generation and electricity generation performance, the invention provides a preparation method of a Janus structure wood-based solar water and electricity co-production evaporator based on metal organic framework modification. The preparation method comprises the following steps: delignification treatment, preparation of a metal organic framework modified wood-based evaporator substrate and preparation of the Janus structure wood-based solar water and electricity co-production evaporator. The MOF is used for reducing the evaporation enthalpy of water, promoting the high evaporation rate and enhancing ion transmission to strengthen water photovoltaic power generation, the stable high evaporation performance is maintained by means of the Janus structure, the requirements of sustainable production of fresh water and water photovoltaic power generation can be met, the efficiency and environment problems in fresh water resource and energy production are effectively solved, and the application prospect is wide. And a new solution is provided for sustainable development.

The solar water purification evaporator comprises a dome-shaped solar evaporator, a sewage area (4), a water purification area (5), a condensation water collection area (1), a moisture absorption water collection area (2) and a photo-thermal evaporation area (3) are arranged in the dome-shaped solar evaporator, and a water conveying pump and a pump body power supply system are arranged outside the dome-shaped solar evaporator; the photo-thermal evaporation area comprises a blue-green algae biomass charcoal photo-thermal evaporation ball group arranged in the sewage area; the moisture absorption and water collection area comprises a porous supporting plate (21) and a patterned moisture absorption system (22), wherein the porous supporting plate (21) and the patterned moisture absorption system (22) are arranged on a water separation plate (32) in a sewage area and a clean water area in the dome-type solar evaporator, and the patterned moisture absorption system adopts polyacrylic acid (PAA) hydrogel (221) compounded by embedded lithium chloride (LiCl) and calcium chloride (CaCl2) and polytetrafluoroethylene (PTFE) gel (222) in an alternating mode. The condensation water collecting area comprises a condensation water collecting system arranged in the dome-type solar evaporator and mainly comprises a radiation condensation coating (12), and a condensation coating area is a radiation condensation coating composed of polydimethylsiloxane (PDMS) and silicon dioxide (SiO2). Compared with a traditional evaporator, the novel evaporator integrating evaporation, condensation and moisture absorption is provided, the water purification rate of a common evaporator is increased, and the evaporator can be used for agricultural irrigation and other aspects.