193 results about "Energy gradient" patented technology

The invention discloses a microgrid operation optimizing method by considering combined supply of cooling, heating and power with a stored energy operation strategy.The microgrid operation optimizing method comprises the following steps of: establishing a CCHP (combined cooling heating and power) microgrid optimizing model; constructing a target optimizing function with a target of lowest generating cost under a microgrid grid-connected operation state; according to the established target optimizing function, comprehensively considering load level of front and time periods with an output trend of each micro power supply, and determining the operation principle of an energy storage unit and a fuel battery to determine the best operation mode of the whole CCHP system in a scheduling period. The microgrid operation optimizing method disclosed by the invention has the beneficial effects that the microgrid electricity selling profits can be effectively increased for energy storage optimization, obvious advantages are provided in lowering the operation cost of the microgrid; the energy resource utilization rate of the stem can be improved and the energy gradient utilization can be realized in comparison with the conventional heat-engine plant and thermal power plant, so that reference is provided for energy saving of the power system; moreover, the energy is saved and the emission is reduced, pollution of air pollutants is greatly reduced, and significance is achieved in improving environmental benefits.

The invention discloses a full-temperature-range pressure swing adsorption gas separation, refinement and purification method.By means of the difference of the temperatures and pressures of different raw material gases and the difference of the adsorption separation coefficients and physical chemistry properties of all components in the raw material gases in the temperature range of 80-200 DEG C and the pressure range of 0.03-4.0 MPa, the adsorption or desorption regeneration operation of the pressure swing adsorption circulation process is adjusted by coupling all separation methods, the adsorption theory that the pressure or temperature swing adsorption separation process is only limited to the adsorption and desorption regeneration circulation operation through pressure or temperature changes is expanded, and therefore all raw material gases are separated, refined and purified by achieving the energy gradient utilization in the gas separation, refinement and purification process and achieving the circulation operation, where adsorption, desorption and regeneration are easily matched and balanced, in the moderate to low cold and moderate to high temperature pressure swing adsorption separation process, and it is changed that a traditional adsorption method is only limited to the auxiliary effect of refinement and purification, and adsorption becomes the basic separation unit operation just as important as refinement, absorption and extraction separation.

A single loudspeaker has a substantially single-point source of sound energy derived from multiple drivers to provide a surround sound effect. The surround sound is effective for listeners close to the single loudspeaker or substantially distant within a room. The physical size of the loudspeaker is convenient for placement on top of a computer monitor or television set. The single loudspeaker produces a dynamically variable energy gradient between the listener's right and left ears and the perception of sound emanating from changing locations in the space surrounding the loudspeaker. The placement of a plurality of these loudspeakers surrounding the expected listener location allows the coverage of larger spaces with separate dynamically variable energy gradient pairs.

The fabrication of the overcoat layer starts with a low energy ion beam to avoid magnetic layer implantation problems, followed by higher deposition energies where the higher energy atoms are implanted into the previously formed lower energy overcoat layer, rather than the magnetic layer. The energy gradient ion beam deposition process therefore results in a thin overcoat layer that is denser than a comparable layer formed by low energy magnetron sputtering, and which overcoat layer provides good mechanical and corrosion protection to the magnetic layer, without degrading the magnetic properties of the magnetic layer.

The invention discloses a combined cooling heating and power system for thermal energy gradient utilization and belongs to the technical field of energy. The combined cooling heating and power system for thermal energy gradient utilization comprises a steam Rankine cycle loop subsystem, an organic Rankine cycle loop subsystem and an absorption refrigeration circulation loop subsystem, wherein a first generator of a first expander of the steam Rankine cycle loop subsystem is driven to generate; dead steam or extraction steam in an outlet is divided into two paths, respectively working as a heat source for the organic Rankine cycle loop subsystem and the absorption refrigeration circulation loop subsystem; and energy gradient utilization can be achieved, so energy utilization rate can be improved. The steam Rankine cycle loop subsystem can provide power, the organic Rankine cycle loop subsystem can provide power electricity and daily use hot water and the absorption refrigeration circulation loop subsystem can provide cold water for air conditioners in summer and hot water for radiation type tail end air conditioners in winter. The system can achieve combined heat and power generation or combined cold and heat power generation via a valve according to user needs; and the combined cooling heating and power system for thermal energy gradient utilization is flexible, reliable, energy-saving and practical.

Provided are an ammonia and lithium bromide integrated absorption refrigeration device driven by heating medium water and a method. The device comprises an ammonia-water solution rectifying tower, an ammonia condenser, a liquid ammonia throttling valve, a liquid ammonia evaporator, a refrigerant ammonia absorber, an ammonia-water solution heat exchanger, an ammonia-water solution circulating pump, an ammonia-water solution reducing valve, a lithium bromide solution generator, a water vapor condenser, a water throttling valve, a water evaporator, a refrigerant water vapor absorber, a lithium bromide solution heat exchanger, a lithium bromide solution circulating pump and a lithium bromide solution reducing valve. An ammonia absorption refrigeration system and a lithium bromide absorption refrigeration system are integrated through heating medium water and chilled water energy flows. The process includes the steps that according to an energy gradient utilization principle, the heating medium water drives ammonia absorption refrigeration at first and then sequentially drives lithium bromide absorption refrigeration. Chilled water made through the lithium bromide absorption refrigeration system is used for cooling the generator (an ammonia-water solution rectifying overhead condenser) and the absorber of the ammonia absorption refrigeration system in a series level mode, and therefore the ammonia absorption refrigeration process is intensified.

The invention discloses an EEG (electroencephalogram) based sleep detection and sleep aid method and device. The EEG based sleep detection and sleep aid method includes the steps of S1, collecting human single-channel EEG; S2, processing the EEG by extracting components and features; S3, assessing energy gradient according to included angle of the previous energy vector and the next energy vector; and S4, testing sleep state in real time by assessing change of states according to the assessment control criterion so as to form an application control decision to control a music play system. The features refer to energy of different components of the EEG, and energy of each component is defined as quadratic sum of signal amplitude. The method, which is capable of analyzing sleep states by means of on-line energy change assessment process and achieving sleep aid, is practical and universal, and further, is convenient and flexible as the aid process can be modified personalizedly according to personal preference.

The invention discloses a processing method and device for a nano-scale morphology of a metal material surface, and aims to solve the problem that an existing method and an existing device do not have a soft tool for processing the nano-scale morphology of a hard workpiece surface. The processing method comprises the following steps of: selecting tools made of different materials for to-be-processed metal workpiece surfaces; regulating vibrating frequency and amplitude of vibration of an ultrasonic vibrating device according to molecule or atom quantity preset ranges of the tools in preset nano-scale morphologies obtained on the metal workpieces; driving a clamp to clamp the to-be-processed metal workpieces by a clamping air cylinder; positioning initial processing positions of the metal workpieces to positions below the tools by a XY drive table; starting the ultrasonic vibrating device for enabling the tools to generate micro vibration before processing; enabling a workpiece moving platform and a micro feeding device to move in a matched mode, enabling the micro feeding device to feed according to preset feeding amount, and processing out preset nano-scale morphologies of the metal workpieces. According to the processing method disclosed by the invention, the soft tool is utilized for transferring and diffusing a metal workpiece surface into a mass-transfer film, so that energy gradient of the workpiece surface is improved, and damages on the workpiece are avoided.

The invention provides a layered dynamic regulation method for multiple energy media. The method comprises the steps that on the basis of an energy gradient utilization scheme, an energy medium layered dynamic regulation frame is built; according to the energy medium layered dynamic regulation frame, a regulation scheme of an energy subsystem is built; according to the regulation scheme of the energy subsystem, an optimization model and a corresponding solution mode which are suitable for layered dynamic regulation are built; according to the optimization model and the solution mode of layered dynamic regulation, a collaborative optimization algorithm of bionic intelligence is designed to solve the optimization model; dynamic regulation is carried out on multiple energy media according to the result obtained through solution. According to the layered dynamic regulation method for multiple energy media, a regulation strategy suitable for layered step collaborative optimization of multiple energy media is built, multi-cycle multi-target dynamic collaborative optimization of energy regulation is achieved, the optimization model is built, a differential evolution algorithm with a self-learning mechanism is designed to solve the optimization model, collaborative optimized dispatching of multiple energy media in a complex environment for steel production is achieved, and the method is good in comprehensive economical efficiency and effectiveness.

The invention discloses a renewable energy source, self-adaptation and energy gradient utilization integrated air-conditioning system. The renewable energy source, self-adaptation and energy gradient utilization integrated air-conditioning system comprises an evaporative cooling air-conditioning unit, a solar power generation and supply system, a solar water heating system, an evaporative cooling air-conditioning unit rainwater collection water complementing system and a carbon dioxide automatic monitoring system, wherein the solar power generation and supply system, the solar water heating system, the evaporative cooling air-conditioning unit rainwater collection water complementing system and the carbon dioxide automatic monitoring system are respectively connected with the evaporative cooling air-conditioning unit, and the evaporative cooling air-conditioning unit is communicated with an air-conditioning area through an air pipe network. By means of the air-conditioning system, solar power generation, solar water heating and rainwater collection can be integrated, and meanwhile distribution of return air is reasonably controlled through a carbon dioxide monitor so that the cooling capacity generated by the unit can be completely utilized, and the good indoor air quality can be maintained.

The invention discloses a centrifugal compressor model. The centrifugal compressor technology in China still need be improved continuously so that the operation stability and efficiency of a compressor can be enhanced. The centrifugal compressor model comprises an impeller, a blade diffuser, a bent way and a backflow unit. The blade diffuser is arranged at an outlet of the impeller. Diffuser blades of the blade diffuser are skewed blades, that is, the sides, close to a diffuser wheel cover, of outlets of the diffuser blades are bent to form outlet flow stabilizing blades. An outlet of the blade diffuser is communicated with the bent way. Circular grooves are formed in the outer wall of the bent way. Resistance reduction grooves are formed in blade pressure faces and suction faces of backflow unit blades of the backflow unit, and rectangular channels are formed in blade outlets of the backflow unit blades. According to the centrifugal compressor model, structures of diffusers, bent ways and backflow units of prior centrifugal compressor models are improved, enhancement of operation efficiency and enhancement of operation stability of the centrifugal compressor model are guaranteed, and a computational formula of energy gradient function values in the diffuser is raised.

The invention discloses an energy router based on energy gradient utilization and an operation optimization method thereof. The energy router comprises a gas turbine, a steam turbine, a waste heat boiler, an absorption refrigerating machine, a heat exchanger, a storage battery, a heat storage water tank and a photovoltaic battery. The system converts the fuel into electric energy according to thequality and the grade of the energy, and the waste heat is used for refrigeration, heat supply or power generation, so as to realize the gradient utilization of energy sources. According to the operation optimization strategy of the system, an optimized objective function is established by establishing a system model of the energy router, and optimizing scheduling solving is carried out after an optimization scheduling constraint condition is selected, and an optimized scheduling strategy is finally obtained, so that the system equipment can be correspondingly controlled according to the change of the user demands, and the optimization goal of maximizing the energy gradient utilization rate and minimizing the operation cost is achieved.

The invention relates to the technology of geophysical exploration for oil, in particular to a velocity change along with frequency information-based oil-gas detection method. The velocity change along with frequency information-based oil-gas detection method starts from a post-stack seismic channel set, and comprises the following steps: firstly, adopting mathematical transformation to perform time-frequency analysis on each seismic channel signal of a target formation; then, extracting a group character parameter set of each seismic channel signal from a temporal frequency spectrum; and finally, extracting a group energy gradient attribute (GVF) from the group character parameter set to perform the oil-gas recognition. The velocity change along with frequency information-based oil-gas detection method improves the sensitivity and the reliability of the oil-gas recognition, reduces the uncertainty in conventional methods, obviously improves the capacity of separating the oil gas and water, and has high accuracy rate of recognizing oil-bearing reservoirs.

Embodiments of the present invention provide, among other things, methods, apparatus, and systems for tuning a semiempirical process for predicting energy for different molecular configurations. In an example method, an energy value and an energy gradient are determined for each of a plurality of molecular configurations using an accurate method. A functional form of the semiempirical process is optimized using the determined energy values and energy gradients via multiobjective optimization. The functional form relates one or more parameters to energy values and energy gradients.

The invention discloses an iris image quality cascade type evaluation method. The method includes following steps: S1, measuring and calculating the relative position between a light source image point and a pupil in an iris image, determining whether strabismus exists, determining the image fails to satisfy the quality requirement if yes, and continuing if not; S2, detecting the availability of an iris in the iris image according to a grayscale classification statistical method, determining whether the availability is qualified, determining the image fails to satisfy the quality requirement if not, and continuing if yes; S3, measuring and calculating the local energy gradient in the iris image, determining whether defocus blur exists, determining the image fails to satisfy the quality requirement if yes, and continuing if not; and S4, determining whether motion blur exists according to a circular gradient peak value detection method, determining the image fails to satisfy the quality requirement if yes, and determining the image satisfies the quality requirement if not. According to the technical scheme, the design of a multi-thread assembly line is facilitated, the quality evaluation time is effectively reduced, the storage consumption is reduced, and the iris recognition efficiency is improved.

The invention discloses a multiple-effect evaporative crystallization system and method for utilizing compressed air and a heat pump to dispose wastewater containing salts in a power plant. Accordingto the method, the compressed air is introduced from an air separation device of the fuel gas power plant to assist in atomization of the wastewater containing the salts in the power plant, the air (waste gas) which is already used for assisting in atomization serves as a heat source of the heat pump to be conveyed into a heat pump evaporator through a draught fan, the waste gas is cooled, dehumidified and then recovered, and condensed water generated by using the evaporator for condensing vapor in the air is discharged at regular intervals; predisposed wastewater of the power plant flows intoa heat pump condenser for heat exchange and preheating with refrigerating fluid vapor at first; contact-type mass transferring concentration is conducted on the preheated wastewater and the waste gascooled and dehumidified by the evaporator in a concentration chamber, and the concentrated wastewater with high concentration flows into a multi-level flash evaporation device for flash evaporation.Desalted water generated during flash evaporation converges at a water collecting tank, circulating wastewater in the flash evaporation device flows into a spraying chamber for further atomized concentration with the assistance from the compressed air, the wastewater containing the salts is evaporated in the spraying chamber till complete crystallization, and generated crystallized salts are stacked at a discharging port in the bottom of the spraying chamber and removed by a scraper at regular time. The system fully utilizes waste heat and achieves energy gradient utilization and zero discharge of the wastewater in the power plant.

The invention discloses an automatic focusing system of a digital camera for non-uniform sampling window planning based on golden section. A method comprises the following steps of: carrying out the golden section on a shooting scene for many times in automatic focus window planning; carrying out non-uniform sampling on an area where golden section points are located; and endowing the non-uniform sampling area with different weight values by using an energy gradient function based on a green component as a focusing evaluation function. Therefore, complexity of calculation is reduced on the premise of guaranteeing the focusing accuracy of an imaging body and a background area, and a real-time requirement of the automatic focusing system of the digital camera is met.

A positive and negative gas partial oxidation and steam injection combined circulation of a turbine is provided. Fuel is firstly and partially oxidized in a partial oxidation reactor of an overhead circulation of the gas turbine, and generated combustible gas expands to act and then enters a middle circulation of the gas turbine to be combusted for action; waste heat of a bottom circulation is recycled and generates steam, a part of steam is injected in the overhead circulation, and a part of the steam is injected to the partial oxidation reactor; the rear portion of the circulation of gas turbine is connected with a negative gas turbine circulation in a joined mode. The energy gradient utilization principle is utilized, a partial oxidation method, an advanced steam injection circulation and a negative brayton cycle are organically combined through system integration, the energy utilization efficiency can be substantially improved, emission of pollutants is lowered, and self balance between steam injection water consumption and water recovery is achieved.

Disclosed is a power generation system for performing gradient utilization on geothermal energy and solar energy. The system comprises 5 loops of a geothermal water loop, a solar energy heat collection working medium loop, a heat storage medium loop, a water / steam loop and a cooling water loop. The geothermal energy is used for heating working media of water of a steam turbine to a saturation condition, and the solar energy is used for heating the water to a superheat state and reheating exhaust of a high-pressure cylinder of the steam turbine, accordingly, the gradient utilization of the geothermal energy and the solar energy is achieved, and the thermal efficiency of the power generation system can be improved greatly; simultaneously, sealed operation of geothermal water is achieved, and environment pollution cannot be caused; and the geothermal water loop keeps positive-pressure operation, problems of scaling, corrosion and the like of equipment are solved, and the operation cost is reduced. Besides, an energy storage system is utilized, so that the storage and the release of the solar energy are achieved, and efficient operation of the power generation system without sunlight is guaranteed.

The invention relates to a condensed fluid stripping method matched with a CO transforming device. The condensed fluid stripping method is characterized in that a stripping tower with an original structure is matched with a stripping process flow to carry out condensation three times and fluid distribution three times on transformation gas from the upstream; transformation-process condensed fluids are divided into multi-strand flows according to the difference of the temperature; the multi-strand flows enter the stripping tower from different parts; the function for reducing energy consumption of the stripping tower is fulfilled by scientifically and reasonably utilizing temperature potentials and energy gradients of different transformation-process condensed fluids; meanwhile, the transformation gas at 164 DEG C is used as a heat source for a reboiler of the stripping tower, and thus the energy consumption of a stripping system is remarkably reduced. Compared with the prior art, the condensed fluid stripping method disclosed by the invention has the advantages that the temperature of non-condensable acidic gas stripped by the stripping tower is 45DEG C; and a non-condensable acidic gas cooler at the top of the tower is canceled and no circular cooling water is consumed, so that the investment of equipment is saved and energy consumption is furthered reduced simultaneously. Due to the adoption of novel technologies such as single-tower stripping, cold-hot feeding and side-line ammonia extraction, the condensed fluid stripping method is simpler in control, more stable in operation and lower in energy consumption.

The invention discloses a LNG cold energy gradient utilization method for recovering light hydrocarbon by adopting cold energy. The method comprises the following steps: (S1) the light hydrocarbon isrecovered by using LNG cold energy; (S2) the oil field associated gas condensate recovery or the liquefied CO2 and dry ice preparation or the low-temperature crushing of waste rubber is performed by using the LNG cold energy after recovery of the light hydrocarbon; and (S3) the warehouse refrigeration or the seawater desalination is performed by using the LNG cold energy after the oil field associated gas condensate recovery or the liquefied CO2 and dry ice preparation or the low-temperature crushing of the waste rubber. The method has the following beneficial effects: under the precondition of meeting different user operation characteristics, optimal configuration of the cold energy among multiple users is arranged to realize gradient utilization of the cold energy. According to demands of various cold energy utilization processes on temperature levels, three grades of utilization schemes are formulated, so that the LNG cold energy recovery rate is increased, the LNG vaporization costis reduced, and important significance on improvement of the energy utilization efficiency is achieved.

The invention discloses an LNG cold energy gradient utilization method for conducting power generation by adopting cold energy. The LNG cold energy gradient utilization method comprises the followingsteps that S1, power generation is conducted by utilizing the LNG cold energy; S2, oilfield associated gas condensate recovery or preparation of liquefied CO2 and dry ice or cryogenic pulverization ofwaste rubber is conducted by utilizing the LNG cold energy which completes power generation; and S3, warehouse refrigeration or sea water desalination is conducted by utilizing the LNG cold energy which completes oilfield associated gas condensate recovery or preparation of the liquefied CO2 and the dry ice or cryogenic pulverization of the waste rubber. The LNG cold energy gradient utilization method has the beneficial effects that under the premise that the requirements of different users for the operating characteristics are met, optimal configuration of the cold energy among the multipleusers is arranged, and gradient utilization of the cold energy is achieved. A three-level utilization scheme is formulated according to the requirements of various cold energy utilization technologiesfor the temperature levels, the LNG cold energy recovery rate is increased, the LNG vaporization cost is reduced, and the LNG cold energy gradient utilization method is of great significance for saving the energy and improving the energy utilization efficiency.

The invention relates to a combined circulating device based on coupling of heat supply and electric power peak regulation and an operating method thereof, and belongs to the technical field of combined heat and power generation. The combined circulating device comprises a gas turbine unit and a steam turbine unit; based on the energy gradient utilization principle, integrated design of differentsteam extraction modes is conducted, the operating capacity of a thermal electrolysis coupler of a combined circulating unit is effectively improved, and the heating requirements of residents are ensured; and meanwhile, a steam heat storage system is coupled with the combined circulating unit, collaborative matching of electric power peak regulation and heat supply of the combined circulating unitis achieved, and moreover, the electric power peak regulation capacity of the combined circulating unit operating in the pure solidification working condition is improved. After the combined circulating device is applied, the working capacity loss in the heat supply process is effectively reduced while the external heat supply capacity of the combined circulating unit is deeply exploited, in addition, the current severe electric power peak regulation policy requirements are met, the deep peak regulation capacity of a thermal power generating unit is achieved, the requirement of a power grid for unit peak regulation is met, and the high practical application value is achieved.

The invention relates to a heating and steam extraction heat supply system of an absorption heat pump. The heating and steam extraction heat supply system comprises an intermediate-pressure cylinder, a low-pressure cylinder, a condenser, the absorption heat pump, a peak heater, a drain pump, a fifth low-pressure heater, an electric butterfly valve, electric gate valves, an electric adjusting valve, a circulating water pump, a heat supply network water supply pipeline and a heat supply network water return pipeline. The heating and steam extraction heat supply system mainly aims at the heating and steam extraction heat supply renovation project of a subcritical 300MW-level steam turbine; and according to the fundamental principle of the heating and steam extraction heat supply system, exhausted steam of the intermediate-pressure cylinder of the steam turbine is utilized as a high-temperature heat source of the absorption heat pump, circulating water of the condenser is utilized as a low-temperature heat source of the absorption heat pump, heat supply network circulating water is heated, and then the heat supply network circulating water is supplied to a heat user after being further heated through the peak heater. In the heating period, the absorption heat pump keeps operating at full load to the greatest extent, and the adjusting requirement of heat supply load changes is met through adjustment of the peak heater. According to the heating and steam extraction heat supply system, the aims of achieving energy gradient utilization of the exhausted steam of the intermediate-pressure cylinder, recycling waste heat of exhausted steam of the low-pressure cylinder and improving the economical performance of a unit are achieved, and the good economical performance and operation flexibility are achieved.

The invention belongs to the technical field of production of pentaerythritol, and in particular discloses an energy-saving production method of pentaerythritol. The energy-saving production method of pentaerythritol comprises the following steps: obtaining secondary steam containing alcohol aldehyde and heat at tower top of a dealdehyding tower by using an energy gradient utilization concept, and carrying out gradient utilization of the secondary steam to a dealcoholization tower, an evaporator and a concentrated solution pre-dealdehyding tower to realize the aim of heating the dealcoholization tower, the evaporator, and the concentrated solution pre-dealdehyding tower by using the secondary steam at the tower roof of the dealdehyding tower, so that the energy source is comprehensively utilized; and recycling waste heat so as to heat the to-be-heated material, adding a dealcoholization tower gas phase heat exchanger, a dilute formaldehyde heat exchanger and an alcohol-containing dilute formaldehyde heat exchanger before entering the concentrated solution pre-dealdehyding tower, and increasing the feeding temperature of the concentrated solution pre-dealdehyding tower to 90 DEG C from 60 DEG C through the improvement. The energy-saving production method of pentaerythritol, provided by the invention, realizes one energy source with multiple purposes through series utilization according to the energy grade, the energy source is comprehensively utilized, and thus the energy-saving production of pentaerythritol is finally realized.

The invention discloses an independent temperature and humidity control type air conditioning system based on energy gradient utilization. The independent temperature and humidity control type air conditioning system based on energy gradient utilization comprises an evaporating and cooling high-temperature water chilling unit, a fresh air dehumidifying unit and an air-air heat exchanger, wherein the evaporating and cooling high-temperature water chilling unit, the fresh air dehumidifying unit and the air-air heat exchanger are connected through an air pipeline, the evaporating and cooling high-temperature water chilling unit and the fresh air dehumidifying unit are connected with an air conditioned room, and the evaporating and cooling high-temperature water chilling unit is connected with the sensible heat tail end in the air conditioned room. According to the independent temperature and humidity control type air conditioning system based on energy gradient utilization, low-temperature exhaust air in the air-conditioned room is used as inlet air for the evaporating and cooling high-temperature water chilling unit, the cold energy of the exhaust air is effectively recycled, and low-temperature chilled water can be obtained and conveyed to the sensible heat tail end, so that a sensible heat load of the room is taken away; fresh air is effectively pre-cooled through the low-temperature exhaust air of the evaporating and cooling high-temperature water chilling unit, then the low-temperature exhaust air enters an air-cooled condenser to take away condensation heat, the condensation efficiency is improved, and gradient utilization of energy is achieved; the evaporating and cooling high-temperature water chilling unit and the fresh air dehumidifying unit operate cooperatively, and then independent temperature and humidity control is achieved.

The invention belongs to the technical field of energy, and particularly relates to a self-adaptive distributed energy management system based on a supply side and a demand side. The system comprisesa bottom layer system, a data acquisition and transmission system and an energy management platform. According to the method, an energy management system taking a supply side and a demand side as targets can be established according to accurate demand analysis of the user side in combination with resource endowment of the supply side and the demand side, supply-demand balance, local conditions, butt joint area emission and area demands are achieved, and a user-oriented customized scheme is provided. Energy interconnection and intercommunication are achieved among systems of the bottom layer, energy gradient utilization is achieved, resources are mutually materials, energy utilization is converted into resource utilization, and comprehensive balance is achieved. Energy consumption analysisand energy consumption load demand prediction are facilitated, energy comprehensive scheduling is carried out on the system, management and control integration is achieved, and the energy consumptioncost is reduced.

The invention discloses a steady-flow centrifugal pump and a design method thereof. An efficient running range of a centrifugal pump is narrowed and the service life thereof is shortened due to volume loss caused by a gap of an opening ring of the centrifugal pump, and influence of an axial force on the running of the centrifugal pump. According to the invention, a sealing structure is arranged at an inlet of an impeller, and a balance disc structure is arranged between the rear part of the impeller and a pump shell; due to a zigzag structure, a leakage flow is effectively reduced, the interblending interference effect of the leakage flow at the opening ring, and a main flow is reduced, and the performance of the centrifugal pump is improved; due to the balance disc structure, the automatic balance of the axial force of the impeller is realized; and numerical simulation is carried out on an internal flow field of the centrifugal pump, then analysis is carried out by virtue of an energy gradient theory to obtain distribution of an energy gradient K function of the internal flow field, and then the dimensions of the zigzag structure and the dimensions of the balance disc structure in the sealing structure are optimized until the optimal dimensions are obtained. According to the invention, the reliability and safety of the running of the centrifugal pump are improved, the comprehensive performance of the centrifugal pump is improved, and good economic benefits are achieved.