119 results about "Heat balance" patented technology

The present application relates to the technical field of heat supply balance management, in particular to a heat supply balance management method and system for end user heat supply. The method comprises the following steps: S1, a heat supply global data acquisition model is built, heat supply pipeline data is collected, and an end user list is obtained according to the heat supply pipeline data; outdoor temperature and historical heat supply temperature of each end user are synchronously obtained; independent temperature periods are divided according to the outdoor temperature value; the same heat supply scheme is adopted for classification and elimination of regulation and control interference; temperature differences of different users are compared under the same heat supply condition; exclusive heat loss coefficients of each household are quantitatively generated; heat loss differences caused by floors, orientations and wall heat preservation can be accurately distinguished; user target heat supply temperature is dynamically corrected according to the heat loss coefficient; the temperature correction range of users with large heat loss is increased, and the correction range of users with excellent heat preservation performance is reduced; the uneven heating and cooling problem caused by inconsistent heat dissipation of different houses is solved from the heat loss level of the user itself.

This invention relates to the field of polymer material processing and blending technology, and discloses a fiber uniform mixing process in the preparation of bio-based materials. The process includes: controlling the barrel wall temperature of the main dispersion zone of a co-rotating twin-screw extruder to be lower than the intrinsic melting point of the polylactic acid matrix and turning off the external heater; adding jute fiber bundles and the polylactic acid matrix and controlling the screw speed, utilizing the frictional heat balance temperature difference generated by mechanical shearing to maintain the actual melt temperature above the intrinsic melting point; and conveying the mixture to the secondary diffusion zone as the motor drive torque increases, thereby increasing the barrel wall temperature of the secondary diffusion zone and reducing the screw speed to blend the materials. This invention eliminates temperature control lag, maintains a stable shear flow field, avoids a sudden drop in melt viscosity to improve fiber dispersion uniformity, automatically indicates process stage transitions, avoids material thermal degradation, and improves the stability of the mechanical properties of the finished material.

This application relates to a method, system, device, and medium for controlling crystal growth fluctuations, belonging to the field of crystal growth equipment control technology. The method includes: acquiring real-time output power and input voltage signals from a digital inductive power supply; identifying abnormal fluctuations in output power based on the input voltage and extracting abnormal fluctuation power data; calculating target water flow velocity adjustment data based on abnormal energy and heat balance mapping, and converting it into a target driving voltage; determining whether the target voltage exceeds a safety threshold; if it does, clamping it to the threshold and extending the time; otherwise, using it directly; and outputting a driving signal to the electrodes according to the final voltage and time, fine-tuning the primary buffer cooling water flow rate before it flows into the induction coil. This application utilizes electromagnetic fine-tuning of the cooling water flow rate to accurately counteract the interference of inductive power supply power fluctuations on the crystal growth environment, improving the energy stability of the crystal growth process and ensuring crystal quality.

The application discloses an adiabatic accelerating calorimetry method with fast reaction heat loss correction. The application realizes more accurate calculation of sample reaction kinetics and thermodynamics by compensating the convection and conduction heat loss in the fast reaction stage; differential equations are derived and solved from the perspective of heat balance by using heat transfer analysis; a new heat loss calibration mode is added, the HWS heating stage is divided into two parts, the convection heat loss coefficient is calibrated by tracking the reaction system temperature by controlling the cover temperature in the first part, and the conduction heat loss coefficient is calibrated by controlling the constant temperature of the furnace body in the second part; the linear fitting and interpolation method are used to solve the relationship between the heat loss coefficient and the temperature in the reaction process; and finally, the heat loss in the reaction process is integrated to compensate the sample heat release. The application improves the accuracy and reliability of the solution of thermodynamic and kinetic parameters.

The application discloses an energy management system of a power cycle system, wherein the power cycle system is a combined power cycle system of a gas turbine and a fuel cell, and the energy management system comprises a fuel pump, a fuel distributor, a cold end heat exchanger, a cooling cycle loop and a hot end heat exchanger; and a control system is used for controlling the fuel pump, the fuel distributor and a circulating pump in the cooling cycle loop, wherein a fuel flow is obtained based on a required power of the power cycle system, a rotating speed of the fuel pump and an opening degree of the fuel distributor, a hot end heat exchanger heat is calculated through heat balance based on the fuel flow, and a cooling effect of the cooling cycle loop is realized based on the hot end heat exchanger heat and the rotating speed of the circulating pump. The application can simultaneously meet the energy saving and emission reduction and weight control requirements of an aircraft, and also solves the problem that the system power density is limited by the heat dissipation capacity.

The utility model relates to the kiln pipeline technical field especially relates to kiln heat energy balance pipeline mechanism, including sintering equipment, the inside of sintering equipment is provided with kiln A way and kiln B way, and the inside of kiln A way and kiln B way is provided with electric heater and material track respectively, the side of kiln A way is provided with circulating fan, and the exhaust round pipe is communicated between circulating fan and kiln A way, and the air inlet of circulating fan is connected with the air inlet round pipe, and the air inlet round pipe is equipped with the heat energy circulation mechanism for conveying sintering equipment cooling section heat energy. The utility model discloses through setting up circulating fan and heat energy circulation mechanism, the hot air of sintering equipment cooling section is transported to kiln A way again, makes the air of entering high temperature state, compares with directly inputting outside cold air, significantly reduces the temperature difference between kiln A way and kiln B way, not only has optimized the temperature uniformity of sintering process, also reduced heat energy loss, improved energy utilization, thereby reduced overall energy consumption.

This application provides a method and system for early warning of overheating hazards in electrical equipment based on UAV multispectral imaging, belonging to the field of power equipment condition monitoring technology. This application first acquires ultraviolet photon and spatial point cloud data collected by a UAV. A three-dimensional model is constructed based on the point cloud, and electric field distribution information is obtained through finite element analysis. Combining photon data and electric field information, the discharge charge quantity and distribution are obtained through spatial inversion correction. Then, the discharge current density is calculated using an energy dissipation model, and the discharge heat power loss density is determined by combining the local electric field. Finally, the steady-state heat conduction equation is solved based on heat conduction parameters to calculate the temperature field distribution under thermal equilibrium. When the steady-state temperature exceeds the heat resistance threshold, an early warning message is generated. This application achieves early and accurate prediction and location of hidden overheating faults in electrical equipment caused by insulation degradation.

This utility model provides a fresh air system with humidification function for a textile workshop, comprising the following structure: a heat exchange section, with multiple deflection pipes movably connected to the top front end of the heat exchange section; a deflection plate is fixedly provided on the outer side of the left end of each deflection pipe; a connecting pin is movably connected to the top of the deflection plate; a fish skeleton is slidably connected to the outer side of the connecting pin; the bottom front end of the fish skeleton is fixedly connected to the rear output end of a deflection cylinder; a rotary joint and an air supply pipe cooperate to supply air to the deflection pipes; the deflection cylinder drives the fish skeleton to extend and retract; the connecting hole of the fish skeleton cooperates with the connecting pin, completing the deflection pipes deflecting on the heat exchange section by pulling the connecting plate; the air nozzles of the deflection pipes blow the exhaust channel, blowing foreign objects adhering to the inner wall of the exhaust channel into the exhaust section, thus preventing foreign objects adhering to the heat exchange section from affecting the heat balance of the incoming and outgoing air.

The present application relates to air cooling unit energy saving and consumption reducing technical field, disclose air cooling unit column fan operation parameter determination method, device, equipment and medium, including: the exhaust pressure of exhaust main pipe and the condensate pressure of each column condensate way are collected;Based on the exhaust pressure and condensate pressure, the heat load of each column steam distribution pipe is calculated;Using the experimental data obtained in advance, the first relationship function between ambient temperature, electric power and fan optimal frequency is fitted;According to the thermal balance characteristics of steam turbine, the second relationship function between electric power and heat load is fitted;Based on the first relationship function and the second relationship function, the heat load deviation of each column steam distribution pipe and the optimal operating frequency of each column fan are calculated, the optimal operating frequency corresponding to each column fan can be calculated simply, which provides guidance for the economic operation of air cooling unit, achieves the purpose of deep energy saving and emission reduction, and the energy saving effect is remarkable, online real-time optimization calculation meets the needs of engineering.

This invention belongs to the field of multi-energy dispatching technology, specifically a method and system for multi-energy coordinated adaptive dispatching of photovoltaic, biogas, and thermal storage loads. The method includes establishing a multi-energy coupled system model encompassing photovoltaic, biogas, heat pump, thermal storage, and electrothermal loads; characterizing the nonlinear influence of fermentation temperature on biogas production rate and dynamic heat balance; constructing a two-stage rolling optimization framework: the first stage uses the fermentation cycle as a window to determine the temperature setpoint and biogas storage boundary; the second stage uses a 24-hour window to jointly optimize grid interaction, heat pump heating, thermal storage charging and discharging, and adjustable loads; constructing a Markov decision process in the day-ahead dispatching stage, and solving it using an improved approximate dynamic programming approach; and issuing dispatching commands based on the optimal decision sequence to complete closed-loop execution. This invention achieves coordinated optimization across fermentation cycles and day-ahead dispatching, effectively addressing uncertainties in photovoltaic output and load, and improving renewable energy absorption rate and system operating economy.

This invention discloses an adaptive and coordinated control method for copper concentrate slurry-feed roasting based on heat balance and acid dew point constraints, belonging to the field of non-ferrous metallurgy and process control technology. In existing slurry-feed roasting processes, this method determines the upper limit of the heat balance for the slurry feed water volume by calculating the self-heating roasting heat release and the minimum roasting heat demand; further, it limits the slurry feed water volume and slurry concentration by incorporating the acid dew point temperature constraint of the roasting flue gas. When the theoretical calculation results exceed the stable operating range of the existing slurry conveying system, the slurry temperature, slurry conveying capacity, and furnace air volume of the roasting system are coordinated and adjusted to ensure that the acid dew point of the roasting flue gas meets the predetermined upper limit requirement, while simultaneously ensuring stable system operation. This invention does not require changes to the roasting process flow and has good practicality and adaptability to different operating conditions.

This invention provides an online measurement method for leakage from high-pressure cylinder exhaust to third-stage extraction steam in a combined-cylinder turbine unit, belonging to the field of combined-cylinder turbine operation monitoring technology. The method includes: establishing a typical data benchmark to obtain the benchmark third-stage extraction enthalpy value; real-time acquisition of boiler feedwater flow rate, exhaust parameters of each high-pressure heater and cylinder as raw parameters; preprocessing the raw data and calculating the enthalpy value at each state point based on the preprocessed data; establishing and solving the heat balance equations for each high-pressure heater based on the feedwater flow rate and enthalpy value to obtain the steam inlet flow rate of the third high-pressure heater; combining the benchmark third-stage extraction enthalpy value, high-pressure cylinder exhaust enthalpy, enthalpy after mixing of the third-stage extraction steam, and steam inlet flow rate of the third high-pressure heater to establish a set of mass and energy conservation equations for the mixer, and back-calculating the leakage amount; displaying the leakage amount in real time and providing early warning. This invention requires no shutdown modification and can accurately quantify the internal leakage from high-pressure cylinder exhaust to third-stage extraction steam online, effectively improving the unit's economy and safety.

The application discloses a dust detection and cleaning method and device for a projector, and the method comprises the following steps: acquiring a first temperature T a at a starting time of the projector and a second temperature T b at a thermal equilibrium time; if a difference Δt between the thermal equilibrium time and the starting time satisfies a first condition and a difference ΔT between the second temperature T b and the first temperature T a satisfies a second condition, then the fan rotating speed is adjusted according to a preset rule. The application has the beneficial effect that, during the operation of the projector, whether dust blockage exists at the air inlet of the projector is detected in real time through temperature parameters and time parameters, and the fan rotating speed is automatically adjusted according to the preset rule to blow out the dust, the detection process is intelligent and convenient, and the use experience of a user is not affected at all, and the dust can be cleaned in time after the detection, so that the heat dissipation effect of the projector is ensured.

This invention discloses a proxy modeling and multi-scenario optimization control method for modular shading systems oriented towards light and heat balance. The proxy modeling method visualizes the opening and closing state matrix of the shading system and uses a sample set composed of this matrix and performance distribution images obtained from annual light and heat simulations to train a generative adversarial network, constructing a proxy model capable of rapidly predicting the spatial distribution of multiple indicators such as daylighting, glare, and thermal comfort from the facade state. The optimization control method, based on this proxy model and combined with indoor scene zoning and differentiated performance objectives, transforms shading control into a multi-objective optimization problem, automatically searching for the Pareto optimal solution set using an evolutionary algorithm, and finally outputting the optimal shading control command. This invention replaces time-consuming simulations with an efficient data-driven model, achieving rapid performance evaluation of high-dimensional modular shading systems and adaptive, refined control for multi-scenario needs.

The application discloses a high-efficiency heat balance heavy-load robot rotary joint, which comprises a power source assembly, a heat balance oil source assembly and a high-torque output assembly. The power source assembly provides power through the relative rotation of the stator and the rotor, and drives the pump body of the heat balance oil source assembly to rotate and pump hydraulic oil. The heat balance oil source assembly comprises a main oil path and an auxiliary oil path. The main oil path supplies the hydraulic oil to the output assembly, and the auxiliary oil path is provided with auxiliary components such as overflow valves and one-way valves and is connected with an oil tank. The heat balance oil source assembly is provided with an embedded phase-change guiding active heat dissipation structure and can realize the high-efficiency heat balance of the rotary joint. The high-torque output assembly is driven by the hydraulic oil to realize rotary actuation, and simultaneously has an oil flow channel to realize cascaded multi-degree-of-freedom heavy-load output. The application can output an extreme torque far exceeding the limit torque of a traditional electric joint, has excellent overload capacity, can realize heat balance under heavy load and long-time stable operation, and can meet the requirements of robot heavy load and high dynamic motion.

The application provides a method and device for determining critical ice-melting current of an iced conductor, an apparatus and a conductor. A simplified model of the iced conductor in a critical ice-melting state is established. A heat balance equation is constructed according to the simplified model of the iced conductor and a thermal circuit analysis method, and the heat balance equation includes an outer surface temperature of an ice layer and the critical ice-melting current. A mixed convection heat transfer coefficient of the heat balance equation is calculated according to a preset outer surface temperature of the ice layer. The heat balance equation is subjected to a transcendental term conversion process according to the mixed convection heat transfer coefficient, and a monomial quartic equation based on the outer surface temperature of the ice layer is obtained. The monomial quartic equation is iteratively solved until the outer surface temperature of the ice layer meets a preset convergence requirement, and a target outer surface temperature of the ice layer is obtained. The critical ice-melting current of the iced conductor is calculated by substituting the target outer surface temperature of the ice layer into the heat balance equation, and the accuracy and efficiency of the critical ice-melting current calculation are improved, thereby providing good theoretical support and engineering application scheme for iced conductor protection.

The present application relates to the intelligent control technology field of continuous production and chemical process of petroleum cementing additives, in particular to a continuous production big data analysis and regulation method for high-temperature stabilizer of cementing slurry, comprising: collecting process state time series data and synchronous control instruction data of a reaction kettle, a jacket heat exchange loop, a stirring driving part and an online viscosity detection part and aligning; constructing a normal working condition benchmark model based on polymerization kinetics constraints and jacket heat exchange heat balance constraints; loading disturbance parameter forward deduction to generate a set of theoretical abnormal states; determining a target abnormal state through similarity calculation of real residual vector and theoretical residual vector set; generating and outputting regulation instructions to a control execution end; the present application realizes stable closed-loop regulation and control of the continuous production process, and reduces the risk of single-point threshold misregulation.

This invention relates to the field of thermal performance testing technology, specifically disclosing a modular microchannel liquid-cooled plate thermal performance testing system and method. The method includes: extracting the initial thermal resistance distribution of the liquid-cooled plate under test and extracting the spatial heat transfer dispersion to determine the precursors to critical boiling; if precursors exist, identifying the physical divergence inflection point and generating an adaptive micro-incrementing step size; using the micro-incrementing step size for extreme value trial loading and extracting the real-time temperature rise slope to determine the critical heat transfer cutoff boundary; issuing a power-off protection command when the real-time temperature rise slope penetrates the boundary, and retrieving the data of the final state of thermal equilibrium before power-off to obtain the critical heat flux density. The system includes: a thermal resistance partitioning module, a critical analysis module, a step size adjustment module, a heat transfer cutoff module, and a heat transfer determination module. This invention achieves the detection of the ultimate heat flux density through adaptive step size adjustment and dynamic slope early warning, which helps reduce sample burnout caused by thermal runaway.

The application discloses a kind of wet flue gas desulfurization system and method of dynamic cooperation optimization of liquid-gas ratio and calcium-sulfur ratio, and relates to the field of flue gas treatment technology.The system includes gradient staggered layout variable frequency spray layer, voiceprint monitoring array and central controller.The method includes: collecting full-dimensional working condition data and slurry activity parameters;Using double-membrane theory mechanism model to calculate theoretical control instruction, and through residual compensation neural network model to predict correction, generate final liquid-gas ratio and calcium-sulfur ratio instruction;Performing time sequence decoupling control, preferentially adjusting liquid-gas ratio when inlet sulfur dioxide surges, and delaying calcium-sulfur ratio adjustment.The application also introduces dynamic pH setting based on slurry supersaturation and full-system heat balance energy-saving constraints, and realizes flow field self-recovery compensation of nozzle blockage through voiceprint feature recognition.The application solves the problems of existing desulfurization system under working condition fluctuation, such as response lag, energy consumption redundancy and lack of equipment fault perception, and realizes efficient, low-consumption and high-reliability cooperative control.

The application relates to the technical field of molten salt heat storage, and discloses a molten salt heat storage device for a thermal power plant, which comprises a tank body, a heating area and a heat storage area arranged in the tank body, a heating box arranged in the heating area and internally provided with a heating device, a heat storage box arranged in the heat storage area and internally provided with a stirring device, and a circulating device arranged in the interlayer between the heating box and the heat storage box and in communication with the heating box and the heat storage box at two ends. The heating box comprises a primary heating box in communication with a molten salt feeding port at the top and internally provided with a plurality of heating devices, and a secondary heating box arranged below the primary heating box and internally provided with a heating device at the bottom. After the temperature of the molten salt in the heat storage area is reduced, the molten salt can also flow into the heating area for heating, heat loss is reduced, the molten salt is prevented from being frozen and blocked in a solid state, and the overall heat balance of the molten salt is ensured during use.

The application discloses a temperature calculation method and device for a ground parking target, and belongs to the field of temperature generation. The method comprises the following steps: performing spatial division on a geometric model of a to-be-detected target according to a triangular facet, so as to obtain a plurality of control units; establishing a heat flow model of each control unit according to environmental data of the to-be-detected target; wherein the heat flow model comprises a heat conduction model, a convection model and a radiation model; and solving the heat flow model of each control unit according to a preset heat balance constraint, so as to obtain a temperature distribution result of the to-be-detected target. The application can solve the problem of low calculation precision of the temperature of a traditional ground parking target.

The present application relates to heat mass exchange equipment detection technical field, disclose a kind of method and device for testing packing performance, method includes the following steps: adjusting system to run to dynamic heat balance state;Utilize air state detection mechanism to carry out physical mixing sampling to cross section air to obtain average dry-wet bulb temperature, and simultaneously collect inlet and outlet water temperature;Air is shaped after passing through flow equalizer, average dynamic pressure is collected through physically connected wind pressure detector and actual air mass flow is calculated;Based on the acquisition parameter, according to heat transfer mass transfer theory, the numerical integral is carried out to calculate packing performance test constant;Finally, through multi-working condition test and curve fitting, general performance characteristic equation is established.The present application effectively solves the measurement error problem caused by airflow distribution uneven by air physical mixing sampling and airflow homogenization pressure measurement, improves the accuracy of thermodynamic parameters and flow calculation, and the characteristic equation generated has higher engineering application value.

The application discloses a kind of bridge pier body mass concrete intelligent temperature control maintenance system, belong to mass concrete temperature control maintenance technical field.Solve the problem that concrete hydration heat parameter time-varying leads to prediction misalignment, temperature control lagging behind is prone to cracking, the system includes temperature sensing array, pre-buried cooling water pipe network, circulating pump and intelligent controller.Intelligent controller is identified by constructing heat balance prediction model with equivalent specific heat, equivalent thermal conductivity and hydration heat release rate as time-varying parameter;With the measured and predicted temperature residual, with recursive least square method or Kalman filtering on-line rolling identification parameter, so that model approximates actual;Based on updated model, calculate future temperature prediction bias as feedforward, superimposed measured deviation feedback generates composite control signal, dynamically adjusts circulating pump speed.Thereby realize the adaptive precision control of mass concrete temperature, mainly used for intelligent temperature control maintenance of bridge pier body and other mass concrete, prevent temperature crack.

The utility model relates to the field of heat supply energy saving, concretely relates to a flow regulation structure for the heat balance of water - hot air heat exchange, including main jar body, one side of main jar body is equipped with output flow control mechanism, is equipped with hot air delivery structure and heat insulation temperature guide mechanism in main jar body, through the design of spiral conveying pipe and temperature guide plate, increase the contact area and path of hot air and hot water, cooperate heat insulation interlayer and reduce heat loss, realize the efficient, balanced transmission of heat, effectively improve the hot air output temperature fluctuation problem, promote the stability of subsequent process operation, output flow control mechanism adopts two -stage regulation mechanism of adjustment bin coarse adjustment and valve body fine adjustment, combines control panel and sensor real -time monitoring, can according to the working condition change fast, accurate regulation hot water flow.