167 results about "Renewable energy technology" patented technology

The invention discloses a parallel structure and a control method for a photovoltaic power generation grid-connected inverter and belongs to the technical field of renewable energy sources. A topological circuit structure of the photovoltaic power generation grid-connected inverter is divided into a parallel structure of single-phase voltage type pulse-width modulation (PWM) inverters and a parallel structure of three-phase voltage type PWM inverters; and in the control method, an outer ring regulator of a control circuit of the parallel voltage type PWM inverters is independent based on a power grid voltage-oriented vector control technology in a control mode of voltage outer ring and current inner ring so as to form a common unified outer ring regulator; control strategies of various inverters are simplified into single closed loop current control so as to achieve the consistency of energy flow directions of the parallel voltage type PWM inverters and avoid ring current; and the parallel current sharing of the voltage type PWM inverters is realized. Therefore, multiple modules of the voltage type PWM inverters are connected in parallel to realize high-power modularized large-scale application.

The present invention is solid catalysis process of preparing biodiesel oil continuously with high acid value material, and belongs to the field of grease chemistry and regenerable energy source technology. The process includes following four steps: material pre-treating, reaction, methanol rectifying recovery and vacuum rectification of fatty acid methyl ester; and features the high acid value material, such as acidified oil, waste edible oil, etc. The present invention has the advantages of low material cost, high activity and easy separation of the solid catalyst, high esterification efficiency, high product purity, high yield, less waste, no pollution, etc.

The invention relates to the field of the plan and the design of energy systems, and discloses a multi-energy complementary distributed energy system and an equipment configuration and operation optimization method thereof. According to the multi-energy complementary distributed energy system and the equipment configuration and operation optimization method thereof, energies such as fossil energy, unemployed energy, and renewable energy etc. are converted by the adoption of energy conversion technologies such as the conventional generation technology, the renewable energy technology, the cogeneration technology or the thermal technology etc., the requirements of terminal loads such as electric power, refrigeration, heating, and hot water etc. are satisfied, defects of single energy carrier and single energy supply technology in the prior art are overcome, the coupling utilization mode of a plurality of distributed energy supply technologies is provided, and energy complementation is formed. Further, during system equipment configuration and operation optimization, an established optimization model comprehensively considers equipment performance, policy indicators or economic indicators and combines economic, environmental, and policy boundary conditions, the problem of decoupling of equipment type selection and operation strategy in the prior art is solved, and scientific basis is provided for relevant policy making.

Relating to the technical field of renewable energy, the invention specifically relates to a method for producing biogas and organic fertilizers with straw. The method of the invention comprises the steps of: (1) straw pretreatment; (2) straw composting; (3) anaerobic fermentation; and (4) fermentation product utilization. The method of the invention substantially improves the degradation rate of straw and gas output. Meanwhile, pretreatment by a composite bacterial agent can stabilize the pH value of a fermentation system, and is in favor of the normal occurrence of anaerobic fermentation, so that the content of methane in biogas can be raised. The method in the invention greatly saves cost, almost has no sewage discharge, and improves the utilization rate of renewable energy. The biogas produced by anaerobic fermentation of crop straw can be used as a resident cooking fuel or for power generation after treatment by the purification procedures of desulphurization and dehydration. On the other hand, the residue generated from anaerobic fermentation of straw can be separated into a biogas residue and biogas slurry that are then prepared into solid and liquid organic fertilizers, which are easy for crops to adsorb. Therefore, the comprehensive utilization rate of straw resources can be substantially enhanced.

The invention discloses a horizontal-type continuous biochar carbonization device, and belongs to the renewable energy technology field. The device comprises a feed hopper 1, a carbonization chamber 4, a high-temperature flue gas sleeve 6 and a gas combustor 18. The front end of the carbonization chamber 4 is connected with a feed spiral conveyer 2 through a feed inlet rotary feeder 3. The back end of the carbonization chamber 4 is connected with a char collecting box 15 through a char outlet pipe. The gas combustor 18 is connected with the high-temperature flue gas sleeve 6 through a combustion chamber. Raw materials are added into the carbonization chamber through the feed hopper; the diesel oil combustor is started; the temperature in the carbonization chamber rises; a pyrolysis reaction is generated; charred combustible gas is combusted, high-temperature flue gas is generated, and the carbonization chamber is heated for carbonization; the diesel oil combustor is shut down; the generated biochar is discharged through the char outlet pipe. The carbonization device solves the problems of difficult recycling of charred combustible gas and the like caused by discontinuous production during biomass char production processes, raises the quality and yield of biochar, and is suitable for different biomass raw materials. The carbonization device provides technical support for promotion of biochar industry development in our country.

The invention belongs to the field of renewable energy technologies and ocean equipment and particularly relates to a floating type wave energy-wind energy comprehensive utilization platform. The floating type wave energy-wind energy comprehensive utilization platform comprises a floating type foundation, a wind turbine, swing plates, damping plates, anchor chains, guide rails, rotary shafts and generators. A floating type foundation body is connected to a holding power anchor through the tension leg type anchor chains to be fixed to the bottom of an ocean, and the front swing plate and the rear swing plate are symmetrically installed on the floating type foundation and face toward the incoming direction of waves; the wind turbine and a tower frame are installed in the center of the floating type platform. The platform is characterized in that the floating platform faces toward the incoming direction of the waves, the front swing plate and the rear swing plate rotate in a reciprocating mode under the action of the waves to driven the generators to generate power, and the power and the power generated by the wind turbine under the wind action are complemented. The design that the double guide rails are fixed, and the front swing plate and the rear swing plate work at the same time is adopted, the distance between the swing plates is adjusted according to conditions of the waves so that the stability of the floating type platform can be improved, and the floating type platform is suitable for deepwater areas and meanwhile is high in reliability and easy to install and move.

The invention belongs to a chemical technology and the technical field of a renewable energy source, and relates to a method for producing second-generation biodiesel by hydrogenation production of illegal cooking oil. The method comprises the following steps: firstly, carrying out pretreatments such as filtering, dewatering and desalting, on the collected illegal cooking oil; respectively carrying out reaction, such as hydrodeoxygenation, hydrogenation decarboxylation and hydrogenation decarbonylation, in the presence of a transition metal phosphide catalyst so as to obtain the second-generation biodiesel. By adopting the method, the noble metal property and excellent hydrogenation performance of the transition metal phosphide are fully utilized, the illegal cooking oil is directly converted into oxygen-free fat alkanes, no byproduct for polluting the environment is generated, meanwhile, the method has the advantages of simple process, is clean and environmental, low in energy consumption and the like, the obtained diesel is high in cetane number and low in condensation point, has good economic and social benefits, and has important practical significance on growing fuel requirements.

The invention belongs to the fields of renewable energy technology and marine devices, particularly relates to a U-shaped tube type wave power generation device adopting double floaters. The U-shaped tube type wave power generation device comprises the floaters, pistons, connecting rods, a turbine generator, hydraulic cylinders and anchor chains. The floaters are respectively connected with the pistons through the connecting rods. The pistons are respectively arranged at the two ends of the hydraulic cylinders. The two-way turbine generator is arranged in the middle of the hydraulic cylinder. The U-shaped tube type wave power generation device is characterized in that the floaters move up and down along changes of water level of a sea surface to drive the pistons in the hydraulic cylinders to move, thus liquid in a hydraulic cabin flows to drive the two-way turbine generator to generate power. By the changes of the water level of the sea surface along waves, wave energy is efficiently converted into hydraulic energy and further converted into electric energy to provide electric power for offshore facilities such as a sea lantern and an observation station. The U-shaped tube type wave power generation device is high in reliability and easy to produce, mount and move.

The invention discloses a closed pyrolysis carbonization poly-generation process, and relates to a technical field of renewable energy. The process is used in pyrolysis carbonization processing lines of various biomasses in actual productions. The process is mainly composed of 4 processes of material crushing, material drying, pyrolysis carbonization and carbon-gas separation. According to the invention, a biomass material fed continuously with a closed state is crushed and dried, and is delivered to a pyrolysis carbonization process; in a working initial stage, an external heat source supplies initiation energy for material carbonization; when high-temperature fuel gas produced by crude fuel gas high-temperature pyrolysis in the carbon-gas separation process supplies energy for the operation of pyrolysis carbonization, the external heat source is disconnected. Therefore, an "external excitation initiation and closed cyclic operation" heat source utilization mode is realized. With the process, biochar and fuel gas poly-generation can be realized, and high-efficiency residual heat recovery can be realized with a multi-path closed cycle technology, such that the purposes of energy saving, emission reduction and energy consumption reduction are achieved. The process is suitable for the pyrolysis carbonization processes of various biomasses.

The invention belongs to the field of renewable energy technology, and discloses a biomass fuel anti-coking additive used to solve the problems of high alkali metal content and easy coking during combustion of straw biomass briquette. The biomass fuel anti-coking additive of the invention is mainly composed of 20-30% of alumina, 15-30% of magnesium carbonate and 40-65% of the calcium oxide; and the usage amount of the additive is 2-8 wt.% of the total biomass raw materials. The biomass fuel anti-coking additive of the invention can increase the ash melting point of the biomass briquette, thus solving the problem of coking of biomass solid briquette in the combustion process and improving the utilization rate of straw fuel.

The invention belongs to the technical field of renewable energy and relates to an off-grid wind / solar / battery hybrid power generation system capacity optimal configuration method which includes: (1) initializing particles; (2) calculating generating capacities of a fan and a photovoltaic plate according to local climatic environment and user data, checking out charge-discharge capacity of a storage battery, ensuring that the charge-discharge capacity of the storage battery per hour does not surpass the maximum charge-discharge capacity, and setting the charge-discharge capacity of the storage battery which surpasses the maximum charge-discharge capacity to be the maximum charge-discharge capacity; (3) calculating an objective function value, namely time to character (TTOC) of each particle; and (4) obtaining the optimum particle through an improved particle swarm optimization. According to the off-grid wind / solar / battery hybrid power generation system capacity optimal configuration method, the standard particle swarm optimization is combined with a tabu list to enlarge the search range, restarting and disturbance operations are introduced to enhance the detailed search capability of the optimization, and eventually wind / solar / battery hybrid capacity proportion is led to be reasonable.

The invention discloses a burner for a biomass fuel and belongs to the technical field of renewable energy sources. According to the technical scheme, the burner comprises a feeding motor (1), a slag-removing motor (6) and an inner combustion chamber (8), wherein the feeding motor (1) is used for conveying a biomass solid formed fuel to the inner combustion chamber (8) through a feeding screw (2); a slag-removing device (10) which is connected with the slag-removing motor (6) through a crank (11) is mounted in the inner combustion chamber (8); first inlet air during the igniting, air-heating and burning processes is supplied by a first fan (5); and secondary inlet air is supplied by a secondary fan (4). According to the burner for the biomass fuel provided by the invention, a slag-bonding phenomenon during the burning process of different biomass fuels, such as biomass formed fuel, shredded straws, and sawdust, is effectively avoided by using the slag-removing device (10), the operations of conveying the formed fuel, breaking the slag, deashing, and the like, are realized, the burning efficiency is increased, and the burner for the biomass fuel is suitable for the combustion equipment, such as biomass boilers and hot blast stoves,.

The invention discloses a secondary pyrolysis and waste heat recycling system for biomass pyrolysis gas, belongs to the technical field of renewable energy and is applicable to a biomass pyrolysis gas and coal co-production system. The secondary pyrolysis and waste heat recycling system includes steps of pyrolysis gas purification and dust removal, gas preheating, secondary pyrolysis and waste heat gradient recycling. The pyrolysis gas is subjected to ceramic filtration and high-pressure electrostatic field combined dust removal and purification to remove powdered carbon and other solid impurities in the pyrolysis gas, the biomass pyrolysis gas is preheated, and secondary pyrolysis is performed to remove wood tar in the pyrolysis gas. Gas waste heat generated after pyrolysis is subjected to two-stage recycling, so that waste heat gradient utilization can be achieved, and system heat energy utilization rate can be increased. An upper heating furnace body and a lower heating furnace body of a secondary pyrolysis furnace are mounted in a split way, guide helixes are arranged in reaction tubes, and the honeycomb design is applied to a catalytic reactor, so that pyrolysis process parameters can be adjusted conveniently. By the secondary pyrolysis and waste heat recycling system, gas purification effect and energy utilization efficiency are improved.

The invention belongs to the field of renewable energy technologies and ocean equipment, and particularly relates to a ship-shaped swing type wave power generation device. The ship-shaped swing type wave power generation device comprises a ship-shaped floating body, swing plates, an anchor chain, a hydraulic cylinder, a main hydraulic chamber and a two-way power generation water turbine, wherein the ship-shaped floating body is fixed to the seabed through connection between the anchor chain and a holding power anchor, and the two-way power generation water turbine and a hydraulic mechanism are arranged inside the floating body. The ship-shaped swing type wave power generation device is characterized in that the ship-shaped floating body faces incoming waves of waves, the waves drive the swing plates to reciprocate so as to drive a hydraulic device to work, and finally electric power is generated through the two-way power generation water turbine. The ship-shaped swing type wave power generation device can automatically adjust the orientation according to the transmission direction of the sea waves, efficiently and stably convert wave energy into electric energy, is applicable to deep water regions, has high reliability and is easy to install and move.

The invention discloses a method for producing biodiesel by adopting a microchannel reactor, belonging to the technical field of green renewable energy resources. The method is a novel technology for producing biodiesel products, and in the high-flux continuous-flow microchannel reactor, renewable energy resources such as animal and vegetable oil, waste oil and refined oil as well as methyl alcohol are taken as raw materials, and are subjected to transesterification in the microchannel reactor for a short reaction time of dozens of seconds or several minutes under the catalysis of alkali or acid to produce a biodiesel product. The materials enter the continuous-flow microchannel reactor through a metering pump, and are preheated, mixed and subjected to aftertreatment in a transesterification module to obtain the biodiesel product. The method has the advantages that the operation is simple and safe, and the biodiesel product can be continuously produced with a high yield, and besides, the environment pollution caused by the technology is greatly lowered.

The invention belongs to the field of novel renewable energy technologies and ocean equipment, and particularly relates to a semi-submersible type wave energy-wind energy comprehensive utilization device. The semi-submersible type wave energy-wind energy comprehensive utilization device comprises four float bowls, a wind turbine, two swing plates, depressed plates, anchor chains, a tower support, cross struts, inclined struts, rotation shafts and electric generators. The semi-submersible type wave energy-wind energy comprehensive utilization device is characterized in that the float bowls are fixedly connected with one another by adopting the cross struts and the inclined struts; the bottoms of the float bowls are connected with holding power anchors through the anchor chains and then fixed on the seabed; the swing plates are installed among the float bowls and face the direction of arrival of waves; the swing plates are connected with the electric generators through the rotation shafts and drive the electric generators; the wind turbine and the tower support are installed in the center of the float bowls. The semi-submersible type wave energy-wind energy comprehensive utilization device adopts the design that the front swing plates and the back swing plates work simultaneously, and the space between every two swing plates can be designed according to sea area wave characteristic parameters to improve the stability of a floating platform; the design of the depressed plates is adopted to improve the stability of the floating platform; eight catenaries are adopted to fix the integrated system on the seabed, and the safety is high; the form is simple, and installation and transfer are convenient.

The invention belongs to the technical field of renewable energy, and discloses a water surface wave fluctuation energy recovery device, being suitable for recycling and converting ocean surface wavefluctuation energy into electrical energy. The water surface wave fluctuation energy recovery device comprises a lower float body and an upper float body which are fixedly connected, wherein the lowerfloat body is provided with a counter weight body and an anchor; and the upper float body is a cavity body, which is characterized in that a wave fluctuation energy recovery unit is arranged in the cavity body, the wave fluctuation energy recovery unit contains an induction coil, an induction coil bracket, a plate spring, a plate spring bracket and a magnet, wherein one end of the plate spring isfixed on the plate spring bracket, and the other end thereof is fixed with the magnet; the magnet does oscillating traverse motion vertical to the axis of the induction coil under the action of watersurface wave; the induction coil moves corresponding to the magnet so as to cut magnetic line of force to generate electricity.

The invention belongs to the field of novel renewable energy technologies and aquaculture devices and particularly relates to a novel fish tank capable of automatically feeding by utilizing tide. The novel fish tank comprises a water storage room, a connecting pipe, a fish breeding room, an anchor chain, a piston, an upper-layer feed bin, a one-way valve and a lower-layer feed bin. The novel fish tank is characterized in that the water storage room is positioned at the upper part, the fish breeding room is positioned at the lower part, and both the water storage room and the fish breeding room are communicated with each other through the connecting pipe; four corers at the lower part of the fish breeding room are fixed at the sea bottom through an anchor chain connecting grip anchor. The novel fish tank has the benefits that fishes in the fish tank can be automatically fed by the utilization of sea water level change and in combination with high and low water head difference in the tidal process; the novel fish tank has the advantages of higher reliability and easy manufacture, mounting and movement.

The invention relates to a renewable energy source technology, in particular to an automobile energy storage system utilizing solar energy and an automobile energy storage method thereof. The automobile energy storage system utilizing the solar energy comprises a solar cell unit, a primary energy storage unit, a secondary energy storage unit and a charging unit, wherein the charging unit is connected between the solar cell unit and the primary energy storage unit and between the solar cell unit and the secondary energy storage unit; and under the control of the charging unit, the solar cell unit can charge the primary and secondary energy storage units, and the secondary energy storage unit can charge the primary energy storage unit. According to the embodiment of the invention, the solar energy is stored in the primary and secondary energy storage units, so that the utilization efficiency of the solar energy is greatly improved. Moreover, redundant solar energy is stored in the primary energy storage unit, so that the phenomenon of deficiency of electric quantity after the long-term idleness of an automobile can be avoided.

The invention belongs to the fields of renewable energy technologies and aquaculture devices, and particularly relates to a wave energy oxygen supply device using multiple floaters. The wave energy oxygen supply device comprises an air compression pipeline, floaters, an upright post, a rotating shaft, a connecting rod, a piston, an air one-way valve, an underground one-way valve and a fish-farming room. The wave energy oxygen supply device is characterized in that the overall device is installed on a seafloor foundation through the upright post; an airtight cabin is arranged above the upright post; the air compression pipeline and the piston are arranged inside the airtight cabin; the floaters are respectively distributed on two sides of the device, and are connected with the piston through internal connecting rods, external connecting rods and hinge shafts; the fish-farming room is arranged below the device, and is communicated with the oxygen supply device through the air compression pipeline. The wave energy oxygen supply device disclosed by the invention is capable of driving flowing of air in the air compression pipeline by using the change of floater elevation caused in the wave transmitting process, and supplying oxygen to the fish-farming room, and has the advantages of being high in reliability, and easy to manufacture, install and move.

The invention discloses an energy-saving water-cooling air conditioner, belongs to the technical field of air conditioners and also belongs to the technical field of new energy resources or renewable energy resources. External cooling water systems like a water-cooling heat exchanger and a ground source heat pump are used for heat exchange to enable water temperature of cooling water at an air conditioner terminal to be capable of directly meeting requirements of indoor refrigerating and heating, or the requirements of indoor refrigerating and heating can be met only by enabling a semiconductor refrigerating part and an additional compressor refrigerating part to do a small amount of work. The energy-saving water-cooling air conditioner can normally work under the circumstance that the external cooling water systems are not provided or fail. The energy-saving water-cooling air conditioner has the advantages of energy saving, small noise pollution, convenience in mounting, flexibility in use, convenience in popularization and application and the like. The energy-saving water-cooling air conditioner is beneficial to firstly popularize the air conditioner terminal of the ground source heat pump and then promote popularization of the ground source heat pump and reduction of total social air-conditioning energy consumption.

The invention belongs to the field of novel renewable energy technologies and ocean equipment, and particularly relates to a horizontal-motion float-type direct-drive wave energy device. The horizontal-motion float-type direct-drive wave energy device comprises an electricity generation cabin, a float, stand columns, fixed pulleys, a steel cable, a gearbox, a rail and an electric generator. The device is characterized in that the device is wholly placed on a sea-floor foundation through the stand columns; the electricity generation cabin is installed on the stand columns; the gearbox, a transmission rack and the electric generator are installed in the electricity generation cabin; the rail and the float are arranged between the two stand columns, and the two ends of the rail are fixed to the stand columns respectively; and the float is connected with the transmission rack through the steel cable and the fixed pulleys. The horizontal-motion float-type direct-drive wave energy device is suitable for offshore areas with rich wave energy resources; the design that the horizontal motion of the float of the float-type direct-drive wave energy device is adopted, and therefore the device can adapt to waves in different sizes. The electricity generation principle is simple, and efficiency is stable. An electricity generation device is arranged inside a device body, and safety is high; and the overall float-type direct-drive wave energy device is simple in form and convenient to manufacture and mount.

The invention belongs to the field of new renewable energy technologies and ocean equipment, and in particular relates to a double-swing-plate wave energy conversion device design. The double-swing-plate wave energy conversion device design comprises swing plates, generators, a truss and gear cylinders, wherein the swing plates are connected with the generators through the gear cylinders; the front and rear swing plates are connected through the truss; the entire device is fixed by connecting anchor chains to four corners of the truss. The double-swing-plate wave energy conversion device design is characterized in that the swing plates rotate back and forth under the action of waves, drive gears in the gear cylinders to rotate, and drive the generators to work to generate power through an output rotary shaft. The double-swing-plate wave energy conversion device design is applied to deep sea water areas with richer wave energy resources; the wave energy of incident waves on a vertical plane can be fully utilized by using the double swing plates, and the capturing efficiency of the wave energy is improved; the front and rear swing plates are distributed at an interval of half-wavelength, so that the stability of the device is improved; the entire device is simple in form, easy to operate, higher in reliability, and easy to install and transport.

The invention discloses an ultrathin porous Ce-Ni-O-S nanosheet, and a preparation method and application thereof, which belong to the field of nanometer. The ultrathin porous Ce-Ni-O-S nanosheet adopts Ce, Ni, O and S as main elements, is of an irregular ultrathin platy structure, has a porous structure, and has more dislocation and step defect sites; the Ce, the Ni, the O and the S are uniformlydistributed on a hexagon sheet, so that the nanosheet has excellent OER performance and is superior to IrO2 sold on the market currently. The preparation method provided by the invention adopts a one-pot method, utilizes a program temperature control mode to obtain the ultrathin porous Ce-Ni-O-S nanosheet, is simple in process, low in reaction temperature, short in time, and suitable for batch production, and has guiding significance on renewable energy technology development.

The invention relates to power generation equipment using gas as energy and a power generation method, and belongs to the renewable energy technical field. The invention is characterized in that: a pressure gas storage tank is connected with a cutoff valve, the cutoff valve is connected with a water-gas separator, the water-gas separator is connected with a constant gas flow valve, the constant gas flow valve is connected with a gas nozzle; the opening of the gas nozzle aligns with a gas wheel to evenly release pressure gas; the gas wheel is connected with a pneumatic machine, the pneumatic machine is connected with a generator; the generator can also be respectively connected with an inverter and a load power grid; an air compressor is connected with the generator or the inverter or the load power grid; the gas produced by the air pressure is connected with a check valve through a pipeline, and the check valve is connected with a gas storage tank. The invention has broad adaptability, is not restricted by the energy and is not affected by the regional environment; the rating gas flow is always kept; the speed of gas energy is steady, so the voltage and the frequency of the electrical energy converted by the gas energy can be directly used by the load (power grid); and the excessive electrical energy can be used for places where the electricity is needed.

The invention belongs to the field of the renewable energy technology and aquaculture devices, and particularly relates to a movable fish box oxygen supply device using wave energy. The movable fish box oxygen supply device comprises a boat-shaped floating body, swing boards, transmission devices, air inlet boxes, an air compression pipeline and underwater one-way valves. The movable fish box oxygen supply device is characterized in that the transmission devices and the swing boards are installed on the side faces of the boat-shaped floating body; the air inlet boxes, the air compression pipeline and the underwater one-way valves are distributed in the floating body; the swing boards are connected with pistons in the air inlet boxes through the transmission devices; the transmission devices are connected with the pistons in the air inlet boxes, the pistons move in a reciprocating mode to push airflow in the air inlet boxes to flow, air is collected to the air compression pipeline and output to external devices through the underwater one-way valves, and therefore oxygen is supplied. According to the movable fish box oxygen supply device, through motion of the swing boards in the wave transmission process, air in the air compression pipeline is driven to flow, oxygen is supplied to the external devices, and therefore the device is high in reliability and easy to manufacture, install and move.

The invention belongs to the field of a novel renewable energy technology and an aquaculture device, and in particular relates to a floating type wave energy oxygen supply device utilizing a buoyancy pendulum. The floating type wave energy oxygen supply device comprises an air compression pipeline, a pendulum plate, upright columns, a fixed pulley, a steel cable, a piston, an air one-way valve, an underwater one-way valve, a rotating shaft and fish culture chambers. The floating type wave energy oxygen supply device is characterized in that the device is integrally arranged on a seabed foundation through the upright columns; a sealing cabin is mounted above the upright columns and is internally provided with the air compression pipeline and the piston; the rotating shaft and the pendulum plate are arranged between the two upright columns; the rotating shaft is fixed on the seabed; the pendulum plate is connected with the piston through the steel cable and the fixed pulley; the fish culture rooms are positioned at two sides of the device and are communicated with the oxygen supply device through the air compression pipeline. According to the floating type wave energy oxygen supply device, flowing of air in the air compression device is driven by utilizing the change of flow velocity of seawater along with wave transfer to supply oxygen to the fish culture rooms; the floating type wave energy oxygen supply device is relatively high reliability and easy to manufacture, mount and move.

The invention belongs to the technical field of renewable energy sources and particularly relates to a method for producing hydrogen by fermenting an organism and alkali composite pretreated straw fiber raw material at two steps. The method comprises the following steps of: (1) crushing the straw fiber raw material and mixing the crushed raw material with a nutritive salt solution to obtain a mixture; (2) introducing a thermophile bacteria seed solution into the mixture and carrying out the first-step anaerobic fermentation to produce hydrogen gas; (3) mixing fermentation residue, water and sodium hydroxide according to the proportion for alkali pretreatment, pre-treating the residue and washing to be neutral to obtain a compound pretreated straw fiber; and (4) mixing the obtained compound pretreated straw fiber with the nutritive salt solution, introducing the thermophile bacteria seed solution into the mixture and carrying out the second-step anaerobic fermentation to produce hydrogen gas. Compared with the traditional method for producing the hydrogen by pre-treating the straw with alkali, the method for producing hydrogen by fermenting the composite pretreated straw fiber at two steps ensures that the hydrogen-producing level is improved by 75 percent, the utilization rate of the raw material is improved to 70 percent from 40 percent and the expense for the alkali pretreatment is reduced by 40 percent.

The invention belongs to the wind energy and power engineering teaching field and relates to a renewable energy technology, in particular, a wind turbine generator set operation control teaching simulation device and a simulation method thereof. The wind turbine generator set operation control teaching simulation device comprises a PLC controller module, a toolbox, a power source module, an experimental panel area, a wind turbine characteristic module and a wind turbine generator set model; the PLC controller module is connected with the experimental panel area, the wind turbine characteristic module and the wind turbine generator set model through connection wires; and the power source module supplies a power source for the PLC controller module, the experimental panel area and the wind turbine characteristic module. The device is used for teaching simulation experiments. According to the device, based on the PLC controller module and the wind turbine characteristic module, wind turbine generator set full-automatic operation control programming can be carried out, and real wind turbine generator set power generation operation can be simulated; and the power generation operation, control strategies and operation simulation effects thereof of a wind turbine generator set designed by an experimenter can be observed in real time.