12 results about "Primary energy consumption" patented technology

The invention relates to the technical field of building energy saving and comfort level optimization, in particular to a building energy consumption and comfort level target optimization method and system based on a neural network and a genetic algorithm, by adopting the method provided by the invention, the weight and bias of a BP neural network are optimized through a grey wolf algorithm (GWO), and the prediction precision is improved; on the basis of a GWOBP model, NSGA-II is used for multi-objective optimization, a Pareto optimal solution is obtained, the optimal combination of the near-zero-energy-consumption residential building envelope structure (the types and thicknesses of wall bodies and roof thermal insulation materials, the types of windows and the horizontal sunshade overhanging length) and the number of ventilation times is selected, and the number of ventilation times is calculated. The problem of multi-objective optimization of annual primary energy consumption and annual uncomfortable degree hours of the residential building is solved, and an optimal balance point between the energy consumption and the comfort degree is found.

The invention discloses a halogenated hydrocarbon and heavy metal combined pollution natural attenuation life cycle benefit evaluation method, and belongs to the technical field of environmental science and engineering. The method comprises the following steps: constructing an MNA full-life-cycle system boundary, and establishing a list database including monitoring well network full-life-cycle operation and maintenance, long-term sampling analysis and natural attenuation asset accounting; establishing a biogeochemical coupling evaluation model, and introducing a coupling factor to quantify the synergistic environmental benefit of halogenated hydrocarbon anaerobic degradation and heavy metal reduction fixation; selecting global warming potential, primary energy consumption and secondary environment risk indexes to carry out characterization evaluation; a net environmental benefit (NEB) is calculated based on a time discount principle. According to the method, the ecological and economic comprehensive advantages of the MNA technology in the specific combined pollution area can be scientifically and quantitatively revealed, and a decision basis is provided for green restoration technology screening and long-term monitoring scheme optimization.

This invention belongs to the field of energy-related technology, and in particular relates to a seawater source heat pump system and control method that utilizes waste cooling and waste heat. By dynamically allocating the waste cooling of LNG stations, waste heat of thermal power plants, and the cold and heat resources of seawater, the system prioritizes the energy needs of condensers and vaporizers, improves the power generation efficiency of thermal power plants, reduces the primary energy consumption of LNG, and uses seawater to supplement cooling or heating when waste cooling or heat is insufficient, ensuring the continuous and stable energy supply process and the balance between supply and demand. The system has strong adaptability and high operational reliability.

This invention relates to the field of carbon emission forecasting technology, providing a carbon emission forecasting method, system, computer equipment, and storage medium. The method includes: decomposing the industrial-specific final energy consumption data from the overall industry-specific final energy consumption data based on historical annual industrial end-product energy consumption data by category and type; predicting and analyzing this data to obtain the target year's overall industry-specific final energy consumption forecast data; and calculating the primary energy consumption forecast data based on the target year's overall industry-specific final energy consumption forecast data using power generation ratio prediction data obtained from historical annual electricity data evolution analysis, thereby obtaining the predicted value of regional energy consumption carbon emissions. This invention can capture the natural laws governing the impact of energy structure adjustment, technology diffusion, and resource constraints on energy demand and carbon emissions, improving the reliability and accuracy of regional energy carbon emission forecasting.

The invention provides a blanching heating control method for waste heat utilization. The blanching heating control method comprises the following steps: carrying out real-time monitoring and quality grading on a waste heat source; carrying out preheating demand modeling based on material characteristics; performing temperature chain control on the blanching tank partition; dynamic balance control of waste heat-steam complementation is carried out; flash recovery of condensate water based on pressure feedback is carried out; a step of carrying out self-adaptive feedforward control on the material flow; carrying out corrosive gas neutralization and waste heat upgrading; heat energy storage and load transfer are carried out; a step of carrying out system entropy increase monitoring and energy efficiency optimization; and carrying out safety interlocking and fault degradation. According to the method, the waste heat utilization rate is increased to 60% or above, and primary energy consumption is reduced. The temperature fluctuation of the blanching area is controlled within + / -0.5 DEG C; a dynamic response model of waste heat recovery and blanching requirements is established, and millisecond-level temperature control compensation is achieved.

The application discloses a hydrogen metallurgical method and system using steel plant coal gas and application thereof. The method comprises the following steps: extracting hydrogen from coke oven gas to obtain hydrogen and first desorption gas, spraying the first desorption gas into a blast furnace; decarburizing converter gas to obtain converter decarburized gas; decarburizing and denitrifying hydrogen-based shaft furnace top gas to obtain recycled gas; decarburizing COREX gas to obtain COREX decarburized gas; mixing the hydrogen, the recycled gas and the COREX decarburized gas, or mixing the hydrogen, the recycled gas, the converter decarburized gas and the COREX decarburized gas as hydrogen-based shaft furnace reducing gas to produce sponge iron. The system comprises a coke oven gas treatment unit, a hydrogen-based shaft furnace top gas recycling unit, a heating furnace, a hydrogen-based shaft furnace, a blast furnace, and further comprises a COREX gas treatment unit, or further comprises a converter gas treatment unit and the COREX gas treatment unit. The application has important significance for using secondary energy of a steel plant, reducing primary energy consumption of a hydrogen-based shaft furnace and reducing carbon emission of a blast furnace.

To provide a design support system capable of improving design efficiency by supporting selection of outer skin design and facility equipment necessary for achieving energy performance targeted by a building.SOLUTION: The design support system 1 executes a first calculation step of calculating a target design primary energy consumption amount Et of a building, a second calculation step (S112) of deriving a relationship between a design primary energy consumption amount and an air conditioning capacity by using a property database DB for a plurality of existing buildings and calculating a target air conditioning capacity Q t or Qta corresponding to the target design primary energy consumption amount E t as a design target value on the basis of the relationship, and a third calculation step (S15) of calculating a thermal load of the building and a design air conditioning capacity Q d corresponding to the thermal load from the skin information. The design air conditioning capacity Qd and the target air conditioning capacity Qt or Qta are displayed.SELECTED DRAWING: Figure 10

This invention discloses a method, system, and application for secondary energy recovery and utilization in steel plants and hydrogen metallurgy. The method includes: obtaining by-product coal gas from the steel plant, separating reducing gases, and introducing them into a hydrogen-based shaft furnace to produce sponge iron; the reducing gases include a first decarburization gas, a second decarburization gas, a third decarburization and denitrification gas, and hydrogen, or, include the first decarburization gas, the third decarburization and denitrification gas, and hydrogen; the first decarburization gas is obtained by decarburizing FINEX coal gas, the second decarburization gas is obtained by decarburizing converter gas, the third decarburization and denitrification gas is obtained by decarburizing and denitrifying the top coal gas of the hydrogen-based shaft furnace, and the hydrogen is obtained by hydrogen extraction from coke oven gas; the coke oven gas is further hydrogenated to obtain a fourth desorbed gas, which is injected into the blast furnace for low-carbon smelting to produce molten iron. This invention is of great significance for utilizing secondary energy from steel plants, reducing primary energy consumption in hydrogen-based shaft furnaces, and reducing carbon emissions from blast furnaces.

The application discloses a hydrogen metallurgical method and system for absorbing secondary energy of a steel plant and application thereof. The method comprises the following steps: obtaining hydrogen and first desorption gas by hydrogen extraction from coke oven gas, and spraying the first desorption gas into a blast furnace for low-carbon smelting; obtaining converter decarburization gas and second desorption gas by decarburization of converter gas; obtaining recycling gas and third desorption gas by decarburization and denitrification of a part of hydrogen-based shaft furnace top gas; obtaining blast furnace decarburization gas and fourth desorption gas by decarburization of a part of blast furnace top gas; mixing the hydrogen and the recycling gas, and mixing the hydrogen and the recycling gas with the converter decarburization gas and / or the blast furnace decarburization gas as hydrogen-based shaft furnace reducing gas for producing sponge iron. The system comprises a coke oven gas treatment unit, a hydrogen-based shaft furnace top gas recycling unit, a heating furnace, a hydrogen-based shaft furnace, a blast furnace, and further comprises a converter gas treatment unit and / or a blast furnace top gas treatment unit. The application has important significance for absorbing secondary energy of a steel plant, reducing primary energy consumption of a hydrogen-based shaft furnace and reducing carbon emission of a blast furnace.

The application discloses an optimization method for improving P2G heat utilization rate and heat coupling of carbon capture equipment, and comprises the following steps: deducing reaction heat of an electric-to-gas process according to a chemical reaction equation, and optimizing and improving a traditional P2G model; delivering the reaction heat of the P2G deduced in step 1 to a carbon capture equipment, and using the heat to supply the carbon capture, so as to strengthen heat coupling of the P2G and the carbon capture equipment; applying the IP2G model and the carbon capture device to a comprehensive energy system; taking annual operation cost saving rate, primary energy saving amount and carbon dioxide emission reduction as objective functions, taking device configuration of the comprehensive energy system as variables, setting constraint conditions, and adopting a meerkat algorithm as a solving algorithm to perform optimization configuration solving. The application deduces the heat by studying a chemical equation in a reaction process of the P2G, and the application is applied to the comprehensive energy system, so that the energy storage cost performance of the P2G equipment can be improved, the primary energy consumption amount can be reduced, and the annual operation cost can be effectively reduced.

The invention belongs to the technical field related to energy, and particularly relates to a seawater source heat pump system utilizing waste cold and waste heat and a control method. By dynamically allocating waste cold of an LNG station, waste heat of a thermal power plant and cold and hot resources of seawater, the energy utilization requirements of a condenser and a gasifier are preferentially guaranteed, the power generation efficiency of the thermal power plant is improved, and the disposable energy consumption of LNG is reduced; and when residual cold or residual heat is insufficient, a seawater source is started for cold or heat supplement, continuous stability and supply and demand balance in the energy supply process are ensured, the system adaptability is high, and the operation reliability is high.

The present application belongs to the technical field of power battery recycling evaluation, and particularly relates to a system and method for evaluating the synergistic effect of pollution reduction and carbon reduction in a power battery recycling process. A configuration module receives user input of process combination information to be compared, and generates baseline data by constructing a life cycle model with 1 kWh as a functional unit. A collection module retrieves basic emission data and material consumption and environmental emission data at each stage according to the process combination information to be compared, and generates a data set to be evaluated. An evaluation module calculates the primary energy consumption value and global warming potential value of two process combinations, and marks high-impact links. A calculation module determines a pollution reduction and carbon reduction synergy index. An output module generates comparison results of the two process combinations according to the index. The present application quantitatively evaluates the synergistic degree of different recycling processes in the two dimensions of pollution control and carbon emission reduction by calculating the pollution reduction and carbon reduction synergy index, and accordingly recommends a recycling process path with the optimal comprehensive environmental benefit to the user.