174 results about "Primary energy" patented technology

A device, method, and non-transitory computer readable medium for controlling a power distribution system includes an islanded microgrid and a control system. The islanded microgrid includes battery energy storage systems (BESSs) that operate as a primary energy source, and a decentralized consensus-based virtual synchronous generator (VSG). The control system simultaneously, emulates inertial response of a synchronous generator by the virtual synchronous generator during grid disruptions to regulate and stabilizes frequency of the islanded microgrid, and maintain consensus among the plurality of battery energy storage systems (BESSs).

The present invention provides a method for hydrogen-based reduction roasting pretreatment of chromite pellets, belonging to the field of metallurgical technology. The method comprises the following steps: mixing chromite powder, a binder and water to form pellets, obtaining green chromite pellets; mixing H2 and CO to obtain a reducing gas; and carrying out reduction roasting on the green chromite pellets in the reducing gas. The reduction roasting of the present invention is carried out in an H2-CO atmosphere, completely without involving the use of primary energy solid carbon, and enables the chromite pellets to obtain sufficient strength and metal pre-reduction degree before entering the ore thermal furnace, which can greatly reduce the comprehensive energy consumption and emissions in the production of ferrochrome alloy.

The invention discloses a PEMFC (proton exchange membrane fuel cell)-ORC (organic Rankine cycle)-TEG (thermoelectric generator) coupling-based waste heat utilization system and a coupling method. A PEMFC module, an ORC module and a TEG module are coupled; the system comprises a fuel cell, a TEG assembly, a condenser, a delivery pump, a pressure pump, a cooling water storage tank, an evaporator, an expansion machine, a filter, a humidifier, an ejector, a compressor and an electromagnetic valve. Heat carried by cooling water in the PEMFC cooling system is used as a main energy source for waste heat recovery. As the heat taken away by the cooling water is far greater than the directly discharged waste heat, the cooling water has higher enthalpy value and excellent heat recovery potential. By constructing a reasonable heat recovery path and a heat exchange network, the waste heat gradient utilization efficiency can be remarkably improved, and the higher primary energy utilization rate is achieved. And efficient recovery and gradient utilization of the waste heat of the PEMFC are realized.

The refrigeration house condenser waste heat recovery energy-saving system comprises a refrigeration module, the refrigeration module is connected with a first heat energy recovery module, and the first heat energy recovery module is connected with a user side; the refrigeration module comprises a compressor, a first condenser, a first expansion valve and a first evaporator, the compressor is communicated with the first condenser, the first condenser is communicated with the first expansion valve, the first expansion valve is communicated with the first evaporator, and the first evaporator is communicated with the compressor; the first heat energy recovery module comprises a first water pump and a first adjusting valve connected with the first water pump in parallel, and the first adjusting valve and the first water pump are connected with a water supply source and communicate with the first condenser. The first condenser is connected with a second regulating valve, the second regulating valve is respectively communicated with one end port of a third regulating valve and one end port of a fourth regulating valve, the third regulating valve is communicated with the first condenser, and the fourth regulating valve is connected with a user side. The system improves the utilization rate of primary energy in the operation process of the refrigeration house.

The invention discloses a method for processing a steel roller with a polymer coating, which relates to the technical field of intelligent manufacturing and comprises the following steps of: sequentially loading a corresponding number of steel rollers to be processed into a die barrel on a base body, resetting and fixing an end cover on a base, rotating a top cylinder, and primarily finely adjusting and fixing the positions of the steel rollers to be processed; according to the invention, heat dissipated by the raw material slurry is taken as an original energy source, rapid cooling and shaping of the raw material slurry are promoted, static cooling is changed into dynamic cooling, the heat dissipation balance of the raw material slurry is improved, and the heat dissipation efficiency of the raw material slurry is improved. Static injection molding is changed into dynamic injection molding, the eccentricity rate after raw material forming is reduced, raw material slurry is more sufficiently and stably filled into a gap between a mold cylinder and a to-be-machined steel roller, the forming effect of a high-molecular coating is improved, and the adhesive force between the high-molecular coating and the to-be-machined steel roller is enhanced.

The invention relates to the technical field of photovoltaic energy storage adjustment, in particular to a photovoltaic energy storage adjustment method and system based on machine learning. Comprising the following steps: constructing a photovoltaic power prediction model based on historical monitoring data, and generating an expected power curve in a single adjustment period according to the photovoltaic power prediction model; setting a plurality of monitoring sub-cycles according to the expected power curve, and setting a primary energy storage strategy according to all the monitoring sub-cycles; a deviation evaluation value is generated according to the preset feedback time node, and whether a correction instruction is generated or not is judged according to the deviation evaluation value. A plurality of monitoring sub-cycles are set based on an expected power curve, a proper energy storage point is selected to perform charge and discharge control by analyzing a power fluctuation state in each monitoring sub-cycle, and early warning is performed on prediction deviation of a photovoltaic prediction model in time by analyzing actual photovoltaic power and environmental parameters. The overall loss of the energy storage system caused by photovoltaic power fluctuation is reduced, and the service life of the energy storage system is prolonged.

The utility model discloses a two-stage energy storage jumping robot. The two-stage energy storage jumping robot comprises a rack and a plurality of jumping legs arranged on the rack, each bouncing leg comprises a thigh rod, a shank rod, a first-stage energy storage structure, a second-stage energy storage structure and a bouncing driving mechanism; one end of the thigh rod is hinged to the rack, and the other end is hinged to the shank rod; the primary energy storage structure acts between the thigh rod and the rack; the secondary energy storage structure acts between the thigh rod and the shank rod; the bounce driving mechanism is used for driving deformation to store elastic potential energy; the first-stage energy storage structure and the second-stage energy storage structure are used for correspondingly enabling the thigh rod and the shank rod to swing when elastic potential energy of the first-stage energy storage structure and the second-stage energy storage structure is released, so that the robot jumps upwards, and due to the fact that the second-stage spring is used for storing energy, high jumping height and distance can be provided for the robot.

The invention discloses a biomass gas heat pump system and a control method thereof. According to the method, a generator set part and a heat pump unit part are included; the electricity output end of the generator set part is connected with the electricity input end of the heat pump set part; the generator set part comprises a generator set, a radiator, a stop valve, a cylinder sleeve water heat exchanger and a flue gas waste heat recoverer; the heat pump unit part comprises a compressor, an oil separator, a four-way valve, a condenser, an electronic expansion valve, an evaporator and a gas-liquid separator; the system has two operation modes, namely refrigeration operation and heating operation, and can recover engine flue gas waste heat and cylinder sleeve water waste heat during heating, so that the heating capacity is large, and the heating energy efficiency is high. During refrigeration, flue gas waste heat and cylinder sleeve water waste heat need to be discharged into air, and only the heat pump unit supplies cold. According to the system, biomass gas serves as driving energy to drive the generator to operate, energy distribution of the generator set and the heat pump is adjusted in good time by reasonably utilizing engine cylinder sleeve water waste heat and smoke waste heat, and the primary energy utilization rate of the whole machine is increased.

A radiation device comprises at least a vacuum chamber (1), an electromagnetic accelerator (8) for generating a primary energy beam of ions inside the vacuum chamber (1), and a layer of material (S) carried by a support (4) rotating in the vacuum chamber (1) to generate a flow of particles when a series of nuclear fusion reactions are triggered on the material (S) thanks to the energy of said beam, and wherein the support (4) is hollow and sealed defining a rotating three-dimensional surface that surrounds a containment volume for a cooling liquid in heat exchange with the layer of material (S), such rotating three-dimensional surface defining a heat exchange surface wetted by the liquid, and wherein a level of the free surface of the liquid on the heat exchange surface moves upwards in use due to the action of the centrifugal acceleration generated by the rotation of the support (4).

A continuously adjustable variable damping wave energy device comprises a main floating body used for converting wave energy into kinetic energy between a floater and the main floating body to complete primary energy conversion; the damping plate is located below the water surface to provide damping force, it is guaranteed that the main floating body is kept in a static state under the action of waves, and the floater moves vertically along the buoy under the action of the waves. The conversion assembly is used for converting thin or wave energy into available electric energy and storing the available electric energy; the vertical relative displacement of the floater and the buoy is converted into rotating motion through an inverse motion mode of the ball screw, and the gear box is driven to amplify the rotating speed to drive the generator to generate electricity. And the control assembly comprises a continuously adjustable damper and is used for adjusting the damping parameter of the device according to the wave environment so as to improve the energy capture efficiency of the device, meanwhile, the damping parameter is increased to the maximum value in the severe marine environment so as to lock the floater and the buoy, and the survivability and safety of the device are improved.

The invention is a fusion reactor and can solve energy problems. The reactor could be particularly important for the automotive industry because it can be used as a primary energy source. It enables the advancement of electromobility and could be installed in any vehicle. The reactor consists of a fusion chamber containing two fluid accelerators designed to send a fusion-capable, incompressible liquid in the form of very small microdroplets, generated in pairs, to a collision point. The microdroplets are then forced into collision at speeds of approximately 50–200 km / s. Due to the very high speed of the microdroplets, partial nuclear fusion occurs at the collision point, releasing energy that accelerates the components of the microdroplet in all directions and also impacts the following microdroplets, leading to additional nuclear fusion reactions there.The molecules / atoms of the liquid are additionally optimally aligned by electric fields for nuclear fusion of the deuterium atoms, directly at the collision point.

The invention discloses a coupling co-processing device for flood discharge, energy dissipation and quick release of supersaturated gas, and belongs to the technical field of water conservancy and hydropower engineering. The device comprises a concrete bottom plate, a second-stage energy dissipation pool is arranged on the concrete bottom plate, a first-stage energy dissipation pool is arranged on the concrete bottom plate and located on the inner side of the second-stage energy dissipation pool, and a plurality of water pressure and air pressure breaking assemblies and a plurality of energy dissipation assemblies D are arranged on the concrete bottom plate and located on the inner side of the first-stage energy dissipation pool; a plurality of energy dissipation assemblies C are arranged on the portion, between the second-stage energy dissipation pool and the first-stage energy dissipation pool, of the concrete bottom plate, an energy dissipation assembly A is arranged on the portion, on the outer side of the second-stage energy dissipation pool, of the concrete bottom plate, and an energy dissipation assembly B is arranged on the portion, on the downstream side of the energy dissipation assembly A, of the concrete bottom plate. After the dam discharged water flow is subjected to seven times of energy dissipation, the flow velocity of the water flow is obviously reduced, the energy dissipation effect is remarkable, and supersaturated gas in the dam discharged water flow is sufficiently separated out and released.

The invention relates to a quick design method for a floating body system of an oscillating water column type wave energy device, which comprises the following steps of: selecting a proper turbine system type according to wave characteristics of a target sea area, and determining the size, blade shape and rotating speed of the turbine system; performance parameters of the turbine system are obtained through numerical simulation and experimental testing, and the performance parameters of the turbine system are simplified; according to the performance parameters of the simplified turbine system, a correlation model of the turbine system and a floating body system is established, and wave boundary conditions are set; carrying out grid division on a flow field around the floating body system, selecting a proper turbulence model and a solver, and carrying out steady-state or transient-state simulation; and calculating the primary energy conversion efficiency of the floating body system and optimizing the floating body system. According to the method, the design period and the repeated modification frequency are reduced, parameter matching between the turbine system and the floating body system is more reasonable through the whole design method, the energy conversion efficiency of the whole device is improved, and the performance of the whole system is optimized.

An electrical energy storage system has a plurality of primary energy storage units. Each primary energy storage unit has an inherent internal resistance. The system further includes one or more additional energy storage units. At least one additional energy storage unit further has a pseudo resistance. One or more controllers control the charging and discharging of each of the primary and additional energy storage units. Control of the charging and discharging of the, or each, additional energy storage units with the pseudo resistance is distinguished from the charging and discharging of each primary energy storage unit, and is distinguished from the charging and discharging of any additional energy storage unit that lacks a pseudo resistance.

A device, method, and non-transitory computer readable medium for controlling a power distribution system includes an islanded microgrid and a control system. The islanded microgrid includes battery energy storage systems (BESSs) that operate as a primary energy source, and a decentralized consensus-based virtual synchronous generator (VSG). The control system simultaneously, emulates inertial response of a synchronous generator by the virtual synchronous generator during grid disruptions to regulate and stabilizes frequency of the islanded microgrid, and maintain consensus among the plurality of battery energy storage systems (BESSs).

The utility model provides a micro electric energy collection circuit. The rectification unit is responsible for converting the alternating current output of the piezoelectric collector into a pulsating direct current signal; the synchronous charge extraction unit comprises a self-powered peak detection circuit and a synchronous switch controller and is responsible for efficiently transferring charges from a piezoelectric element to an electric quantity extraction inductor; the secondary electric energy storage unit comprises a primary electric energy storage device, a detection switch, a charging circuit, a secondary electric energy storage device and a voltage stabilization output circuit, input and output of each functional module are sequentially connected in series, and electric energy flows in a one-way mode; the absorption circuit is responsible for absorbing the electric energy in the inductor extracted by the circuit and effectively storing and stably outputting the electric energy; all the functional units are sequentially connected in series, and electric energy flows from the rectifying unit to the voltage stabilizing output circuit of the secondary storage unit in a one-way mode. The input end of the rectification unit is connected with the output end of the micro-electric energy collector, and the output end of the secondary storage unit is connected with the low-power-consumption internet-of-things sensor load. According to the utility model, intermittent weak AC electric signal energy from piezoelectric elements can be efficiently captured, and the intermittent weak AC electric signal energy can be adjusted to a stable output voltage of the Internet of Things sensor through secondary storage.

The invention provides a high-temperature steam system and method based on waste heat recovery and vinasse recycling, belongs to the technical field of steam systems, and can solve the problems that when an existing steam system is applied to the brewing industry, a large amount of primary energy needs to be consumed, and brewing by-products are not sufficiently utilized. According to the technical scheme, the waste heat recovery assembly comprises a heat exchanger, a high-temperature heat pump unit, a heat storage tank, a high-temperature steam heat pump unit and a condensate water tank; the vinasse recycling assembly comprises a biogas steam boiler, a double-membrane gas holder and an anaerobic bioreactor. According to the system, industrial by-products of a brewing factory can be comprehensively recycled, high-temperature steam required by a boiling process of the brewing factory is provided while secondary steam generated by a boiling pot, low-grade waste heat of the factory and brewing waste are recycled, and the energy utilization efficiency of the system is improved; a novel high-efficiency, low-carbon and energy-saving high-temperature steam system is provided for a brewing factory.

The invention discloses a heat pump system and a waste heat recovery method, and belongs to the technical field of heat pump waste heat recovery, the heat pump system is used for recovering waste heat of a waste heat source, the waste heat source comprises a water outlet pipe and a water inlet pipe, and the heat pump system comprises a first-stage heat exchange unit, a second-stage heat exchange unit and a cold using end assembly; the first-stage heat exchange unit comprises a first condensation assembly and a first evaporation assembly, and a heating side channel of the first condensation assembly is connected with the water outlet pipe and used for receiving waste heat and heating water into high-temperature water. A cooling side channel of the first evaporation assembly is used for introducing normal-temperature water and outputting low-temperature water after the normal-temperature water is cooled; the second-stage heat exchange unit comprises a second condensation assembly and a second evaporation assembly. The two ends of a heating side channel of the second condensation assembly communicate with a cooling side channel of the first evaporation assembly and the water inlet pipe correspondingly. And the cold end assembly is in heat exchange connection with the second evaporation assembly. Waste heat can be converted into high-grade heat energy and cold energy at the same time, consumption of primary energy is reduced, and the energy utilization efficiency is improved.

The invention discloses a multi-stage self-destruction physical destruction device and method for an unmanned vehicle control chip, the device comprises a moving sliding block, a bottom plate and a second-stage energetic material, and the moving sliding block comprises a sliding block and a first-stage electromagnetic coil; the tail end of the slider is provided with a lead. The bottom plate comprises a base plate and a secondary electromagnetic coil; a lead is laid on the substrate; the wire is connected in series with a third-stage transduction element; a third-stage energetic material is arranged on the third-stage transduction element; the third-stage energetic material is connected with a power line; a first-level energetic material is arranged at the bottom of the safety pin groove, a first-level energy conversion element is arranged below the first-level energetic material, and a second-level energy conversion element is arranged at the bottom of the sliding block. The method comprises the steps that the first-stage energy conversion element excites the first-stage energetic material to damage the safety pin, the second-stage electromagnetic coil and the first-stage electromagnetic coil drive sliding block to move so that the second-stage energetic material and the second-stage energy conversion element can be aligned, and the copper wire and the wire are short-circuited; the secondary energy conversion element excites the secondary energetic material to damage the chip; the wire and the copper wire are connected in series with the third-stage energy conversion element, the third-stage energy conversion element excites the third-stage energetic material after being electrified, the power line is damaged, and the unmanned vehicle is powered off. According to the invention, vehicle operation termination and data irreversible destruction in an out-of-control scene are ensured.

The utility model provides a kind of dehumidification dry steam unit, including primary energy conversion component, waste heat condenser and secondary energy conversion component, waste heat condenser has primary refrigerant inlet, primary refrigerant outlet, secondary refrigerant inlet and secondary refrigerant outlet;The primary energy conversion component includes: primary compressor, for refrigerant reaches predetermined temperature and pressure, with refrigerant inlet and refrigerant outlet, its refrigerant outlet is connected with the primary refrigerant inlet of waste heat condenser by pipeline;First internal pipeline and second internal pipeline, the gas needing drying is sequentially passed through first internal pipeline, second internal pipeline, and first internal pipeline and second internal pipeline are communicated head to tail along the direction of gas flow;Finned condenser, located in second internal pipeline, with refrigerant inlet and refrigerant outlet, its refrigerant inlet is communicated with the primary refrigerant outlet of waste heat condenser by pipeline;Finned evaporator;Primary gas-liquid separator.

The invention provides a single-phase inverter based on primary energy conversion and a modulation strategy thereof, and relates to the technical field of inverters. The single-phase inverter reuses the inductor and the filter capacitor in the Buck mode and the Boost mode, so that the proposed circuit topology only needs a single inductor and a single filter capacitor element, and compared with a traditional circuit with a two-stage structure, the number of the inductors and the number of the filter capacitors are reduced, and the power density is improved. Meanwhile, based on first-stage energy conversion, only a first-stage switching tube works at high frequency to perform energy conversion, and the efficiency is improved. The invention provides a dual-carrier modulation strategy with different amplitudes for the proposed primary energy conversion single-phase inverter topology. And smooth switching of the converter between the Buck mode and the Boost mode can be realized. And the frequencies of the two carriers can be adjusted, so that the Buck mode and the Boost mode of the converter have the same or different switching frequencies.

The invention relates to a road construction machine (1) comprising: a chassis (12, 112) for moving the road construction machine (1); a main drive device (3, 103) for driving the chassis (12, 112); a main energy storage unit (17, 117) for supplying the main drive (3, 103) with electrical energy or an energy medium; a material hopper (7, 107); and a material hopper insert (14, 114, 14a) for receiving the paving material (PM). The material hopper insert (14, 114, 14a) is removably mounted on the material hopper (7, 107). The material hopper insert (14, 114, 14a) has at least one secondary energy storage unit (15, 115, 15a) for driving the chassis (12, 112) and / or for supplying the primary drive (3, 103) with electrical energy or an energy medium.

The application discloses a marine Stirling ultra-low-temperature primary energy-saving refrigerating system and relates to the technical field of energy-saving heat exchange equipment. The upper part of the base is respectively provided with a refrigerating machine main body, a heat dissipation device, a control system cabinet, a plate heat exchanger and a gas-liquid separator. The ship waste heat is used as a heat driving source, enters the inside of the first shell through a second cooler and a second heat exchange cavity, the crankshaft rotates, the rotary motion is converted into the reciprocating linear motion of a piston assembly, the gear is linked with the crankshaft to coordinate the motion of multiple pistons, a supporting partition plate separates the compression cavity from the expansion cavity, a heat recovery cycle is completed by taking helium as a working medium, the piston assembly reciprocates in a piston motion cavity, the working medium in the compression cavity is compressed, enters the heat exchanger installation cavity through a working medium pipeline and a heat exchange cavity, exchanges heat with a heat exchanger core to reduce temperature, then enters the expansion cavity to expand and work to refrigerate (absorb the heat of the low-temperature cabin of the ship), the expanded working medium flows through the heat exchanger to absorb heat and increase temperature again, and returns to the compression cavity to complete the cycle.

The invention discloses a multi-source synergistic hydrogen energy and coal chemical industry coupling method based on carbon-based solid waste, and belongs to the cross technical field of hydrogen energy and coal chemical industry, the scheme is as follows: coal chemical industry carbon-based solid waste is combusted to generate power, coal chemical industry waste heat is utilized to generate power, and coal chemical industry secondary energy is formed; new energy power generation and coal chemical secondary energy power generation are coordinated to form an island micro-grid, so that the power demand of hydrogen production by electrolysis of water is met; when the new energy is insufficient in power supply, the coal chemical secondary energy is used for maintaining 20% low-load operation of the electrolytic bath; hydrogen generated in the hydrogen production electrolytic cell is sent to the coal chemical industry; and oxygen generated in the hydrogen production electrolytic cell is sent to oxygen-enriched combustion. The coal chemical secondary energy is used as the bottom energy, the defect that attenuation of an electrolytic cell is accelerated due to frequent starting and stopping of the electrolytic cell caused by the fact that new energy is used as intermittent energy is overcome, the problem that hydrogen production cost is high due to hydrogen production, energy storage or hydrogen power generation through water electrolysis of primary energy is solved, and meanwhile a new absorption path is provided for carbon-based solid waste discharged by the coal chemical industry.

The present invention discloses a method, system and storage medium for calculating carbon emissions from electricity consumption on the load side. The method first calculates the carbon emissions per unit electricity of the transmission line based on the proportion of primary energy electricity at each line collection point and power generation grid connection point on the transmission line. Then, starting from the electricity consumption side, the carbon emissions of the transmission line are calculated based on the transmission electricity on each transmission line. Finally, the carbon emissions of the primary energy electricity on the load side are calculated based on the carbon emissions per unit electricity of the transmission line connected to the load side receiving point and the actual electricity consumption on the load side. The present invention solves the problem that the load side main body cannot currently perform effective calculations and can only spread carbon emissions. It can accurately divide the line collection point and the load side receiving point, accurately calculate the carbon emissions per unit electricity of each section of the transmission line and the load side receiving point, and then calculate the carbon emissions on the load side.

The invention discloses a sewage treatment system and method coupling solar heat collection and MVR evaporative crystallization, and the sewage treatment system comprises a heat storage system and a heat exchange system, and also comprises a solar heat collection system, an evaporation device, a vapor compressor device and a salt separation system; the solar heat collection system is connected with the heat storage system, the heat storage system is connected with the heat exchange system, and the evaporation device is communicated with the heat exchange system, the steam compressor device and the salt separation system. A flash evaporation device and a falling film evaporator are arranged in the evaporation device; and a centrifugal machine is arranged in the salt separation system. The overall power consumption of the sewage treatment system is reduced, indirect carbon emission in the sewage treatment process is reduced, meanwhile, due to direct utilization of solar heat energy, the conversion link from heat energy to electric energy and then to heat energy is reduced, process loss is reduced, the utilization efficiency of primary energy is improved, and energy conservation and emission reduction are achieved. And more possibilities are provided for more efficiently and cleanly realizing salt-containing sewage treatment.

The invention discloses a system and a method for freezing, separating and recycling carbon dioxide mixed gas under normal pressure, and relates to the technical field of recycling of combustion type flue gas carbon dioxide. The separation and recovery system comprises an ultralow-temperature CO2 separation tower and a large-temperature-difference special-temperature-zone heat pump, wherein the ultralow-temperature CO2 separation tower is connected with the large-temperature-difference special-temperature-zone heat pump through an ultralow-temperature cold source conveying pipe; the separation and recovery method comprises the following steps: quickly cooling flue gas or mixed gas containing carbon dioxide to below-78 DEG C by using a large-temperature-difference special-temperature-zone heat pump, immediately changing the carbon dioxide gas into carbon dioxide solid (dry ice), separating the carbon dioxide solid from other gases, separating the carbon dioxide solid out, and discharging other gases to obtain pure carbon dioxide. The system for recycling the carbon dioxide gas is simple, few in applied equipment and thorough and clean in recycling, and obtained carbon dioxide is pure; according to the method, the carbon dioxide gas in the discharged waste gas can be completely separated and recycled, zero carbon emission is achieved, the recycled carbon dioxide can be converted and utilized, and consumption of primary energy is greatly reduced.

The heat pump unit comprises a motor, an expansion machine, a transmission case, a transfer case, a generator, a compressor, a condenser, a multi-effect working medium evaporator, a working medium solution pump and a waste heat source, and is characterized in that a motor shaft is connected with the transmission case, the transmission case is connected with the transfer case, the transfer case is connected with the generator, and the compressor is connected with the compressor. The compressor is in pipeline connection with the expansion machine. The condenser is in pipeline connection with the working medium solution pump. The working medium solution pump is in pipeline connection with the multi-effect working medium evaporator. The multi-effect working medium evaporator is in pipeline connection with the expansion machine. According to the multi-effect self-heat-source direct-expansion phase-change power heat pump unit, high-temperature and high-pressure working medium steam generated through evaporation phase change of different working media is used for doing work in the expansion machine, the generator is dragged to generate electricity or the compressor is dragged to supply heat, primary energy is almost not consumed at all, refrigeration and heating are achieved at zero cost, influences of the external environment temperature are avoided, and energy saving and zero emission are achieved.

This utility model relates to the field of waste heat recovery technology for desulfurization slurry, and more particularly to a waste heat recovery system for boiler flue gas desulfurization slurry based on flash evaporation. The system includes a flue gas desulfurization tower, a flash tank, a steam-water heat exchanger, a boiler air heater, and a condensate tank. The bottom first slurry outlet of the flue gas desulfurization tower is connected to the upper slurry circulation inlet, and the bottom second slurry outlet is connected to the flash tank. The flash tank converts the water in the desulfurization slurry into steam through flash evaporation. The steam outlet of the flash tank sends the steam to the steam-water heat exchanger through a steam pipeline. The liquid outlet of the flash tank is connected to the liquid inlet of the flue gas desulfurization tower. The steam-water heat exchanger is connected to the boiler air heater, and the condensate outlet of the steam-water heat exchanger is connected to the condensate tank. This utility model achieves waste heat utilization of the desulfurization slurry through flash evaporation, reducing the final flue gas temperature of the boiler and improving the primary energy conversion efficiency of the boiler.

The invention relates to the technical field of hydraulic engineering energy dissipation, in particular to a hydroelectric hydraulic engineering energy dissipation area protection structure which comprises a dam, the bottom end of a drainage slope on the dam is connected with a long drainage channel with a concave section, and a long auxiliary water channel with a concave section is arranged below the long drainage channel. The long drainage channel is provided with an energy dissipation slope used for throwing water flow into the air, a square-groove-shell-shaped energy dissipation pool, a drainage hole plate, a water collector and a monitoring water tank shell, the water flow is thrown into the air through the energy dissipation slope to achieve primary energy dissipation, and then the water flow falls into the energy dissipation pool and collides with stored water in the energy dissipation pool to achieve secondary energy dissipation. If silt is accumulated at the corner position of the bottom of the water inlet end of the energy dissipation slope, a silt cleaning mechanism can be automatically triggered, the hole discharging plate sprays water flow upwards to impact the silt accumulated on the upper portion, meanwhile, the energy dissipation slope swings and is laid flat so that the silt can flow away smoothly, and after silt cleaning is finished, the energy dissipation slope swings and inclines again to continue to dissipate energy.