4253 results about "Thermal efficiency" patented technology

The invention relates to a boiler combustion optimization control system of a thermal power plant, relates to the technical field of thermal power generation control, and aims to solve the problems of inaccurate multi-source data perception, slow control response and insufficient multi-target collaborative optimization capability under fire coal quality fluctuation and load change. The system comprises a data perception and fusion module, a working condition self-adaptive identification module, a multi-target dynamic optimization decision module and a distributed execution control module, and through multi-source data acquisition and feature extraction, depth time sequence mode identification, multi-target optimization model solving and distributed coordination control, the multi-target dynamic optimization decision module and the distributed execution control module are subjected to multi-source data fusion. Dynamic balance of boiler heat efficiency improvement and nitrogen oxide emission reduction is achieved, and adaptability and control precision of the system under complex working conditions are enhanced.

The invention discloses a condensation-free efficient heat exchange control method and system for a full-premixing water heater, and the method comprises the steps: collecting the multi-source information, such as air inlet temperature, humidity, gas flow, flue gas oxygen concentration and wall temperature, in real time, calculating a predicted dew point based on a dynamic dew point prediction model, and setting a dynamic safety boundary; the condensation risk is judged by comparing the wall temperature with the safety boundary, and active intervention is carried out in a staged cooperation mode that fuel gas and air volume are continuously adjusted firstly and then a partial combustion zone sectioning valve is rapidly turned off; the system comprises a main controller, a mesh-shaped infrared radiation burner, a sectional valve assembly, a gas proportional valve, a frequency conversion fan and related sensors. According to the invention, the system runs close to the condensation boundary through intelligent control, and the advantage of high operation heat efficiency is realized on the premise of ensuring high reliability.

The invention relates to the technical field of chemical automation control, and discloses an intelligent closed-loop control system for producing p-dichlorobenzene by a biomass method, which comprises a signal acquisition module, a residence time reconstruction module, a thermal coupling analysis module, a parameter self-adaptive scheduling module and an execution control module. The rheological characteristics of raw materials are monitored by collecting the current of a stirring motor, the liquid level is dynamically increased through a retention time reconstruction module to prolong the retention time of the materials, and a liquid level periodic migration strategy is introduced to prevent scaling of a gas-liquid interface; the thermal coupling analysis module and the parameter self-adaptive scheduling module are used for calculating thermal retardation post factors, temperature control parameters are corrected in real time, the upper limit of cooling output is limited, inner wall supercooling crystallization is prevented, and the problems that the conversion rate is reduced, the heat transfer efficiency is reduced and equipment is hung on the wall due to viscosity fluctuation of biomass raw materials are effectively solved. And the self-adaptive stable control of the reaction process is realized.

The invention relates to the technical field of artificial intelligence and equipment control, and discloses an AI-driven commercial refrigerator dynamic energy-saving and load prediction system, which comprises the following steps: circularly multiplexing the working and shutdown of a compressor into an active detection process for the thermodynamic state of a refrigerator, and calculating the temperature of the refrigerator according to the temperature time sequence data generated in the process; according to the method, multi-scale dynamic characteristics capable of representing the total heat load and the heat exchange efficiency at the same time are extracted, a machine learning model is input for working condition classification, and then self-adaptive adjustment of a control strategy is achieved. The insight from the passive response to the single temperature to the core hidden variable of the dynamic thermal load is realized, so that the control system can identify the real working condition and make the optimal energy-saving decision, and the energy efficiency and the operation reliability of the equipment in the complex dynamic environment are improved.

The invention provides an intelligent control system and method for a natural cooling heat exchange ventilation unit, and relates to the technical field of energy-saving fans. The optimal operation mode and the natural cooling availability of a target ventilation unit are determined firstly; the expected heat exchange amount of the natural cold side is determined according to the current indoor heat load demand characteristics and the natural cold available capacity, and then a static adjusting instruction of a natural cold side actuator is determined according to the expected heat exchange amount; according to the heat load demand characteristics and the expected heat exchange amount, the mechanical refrigeration demand cold capacity is determined, and then a dynamic adjusting instruction of a mechanical refrigeration side actuator is determined according to the heat exchange efficiency and the mechanical refrigeration demand cold capacity of the mechanical refrigeration unit under the current working condition; and performing coordination control on the actuators on the natural cooling side and the mechanical refrigeration side based on the static adjustment instruction and the dynamic adjustment instruction. According to the scheme, dynamic cooperative control over natural cooling and mechanical cooling of the natural cooling heat exchange ventilation unit under the variable working conditions can be achieved, and therefore the energy efficiency is optimized on the premise that the requirement for indoor thermal comfort is met.

The application discloses a kind of sludge treatment devices, including processing box, microwave head, press roll, first reciprocating mechanism, mud rake and second reciprocating mechanism.The sludge treatment device of the embodiment of the application has higher thermal efficiency when treating sludge, can make the moisture in sludge evaporate rapidly, improve the drying speed of sludge, compared with traditional steam drying and anaerobic digestion and other sludge treatment technologies, microwave drying technology has lower energy consumption, is conducive to energy saving.Through the action of press roll and mud rake, the volume of sludge is effectively reduced, which is conducive to reducing the disposal cost of sludge.The sludge treatment device of the application has compact structure, smaller floor area, which is conducive to saving space, simple operation and management, easy to maintain.Therefore, the sludge treatment device provided by the application has the advantages of high efficiency, energy saving, reduction, small floor area, simple operation and environmental protection, which helps to improve the quality and effect of sludge treatment and reduce the cost of sludge treatment.

The invention provides a coal-fired boiler digital twin modeling and intelligent control method, system, equipment and medium, and belongs to the technical field of thermal equipment intelligent control. The method comprises the steps that coal element analysis data, boiler operation parameters and environment parameters of a coal-fired boiler are collected in real time and preprocessed; calculating an external heat source sum and a heat loss sum, and outputting boiler heat efficiency; a twinborn model is constructed, model parameters are calibrated through data collected in real time and calculated boiler thermal efficiency, and boiler indexes are dynamically simulated and output; taking the collected data and the analog output boiler indexes as input characteristics, predicting boiler operation parameters through an LSTM model, generating an optimization control instruction by adopting a multi-objective optimization algorithm, inputting twin model simulation, outputting prediction parameters, and executing the control instruction when the prediction parameters meet preset constraints; and updating LSTM model training data according to the operation result. Intelligent monitoring optimization of the boiler is achieved, and efficiency, safety and environmental protection performance are improved.

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency is improved.

The utility model discloses an air-to-air heat exchanger and an energy storage converter, a shell of the air-to-air heat exchanger defines an air inlet area, a heat exchange area and an air outlet area which are sequentially arranged in the vertical direction, an air port for internal circulation ventilation corresponds to the heat exchanger area, and an air port for external circulation ventilation corresponds to the air inlet area and the air outlet area. The heat exchange core body is correspondingly arranged in the heat exchange area, so that the outer circulation air channel in the heat exchange core body is arranged in a straight-through mode in the vertical direction, and the situation that dust in outer circulation low protection air flow is accumulated at the corner of the outer circulation air channel of the heat exchange core body after being used for a long time, and consequently the efficiency of the heat exchanger is reduced is avoided. The energy storage converter comprises the air-air heat exchanger. The heat exchange efficiency is high, and the dust accumulation risk of the heat exchanger is reduced.

The invention discloses a heating furnace group control system and method based on the Internet of Things, and relates to the technical field of industrial Internet of Things heating furnace control. The adaptive edge calculation module fuses algorithm processing data and reduces response delay; the dynamic thermal efficiency optimization module predicts and improves thermal efficiency; the digital twinborn decision support module realizes fault prediction; the collaborative energy scheduling module optimizes multi-furnace operation; the block chain security management module guarantees data security; and the cognitive interaction interface module realizes multi-modal interaction, and the system also comprises extension modules such as a multi-scale combustion optimization module and the like, so that accurate control and intelligent management are realized. According to the invention, accurate acquisition and real-time processing of multi-dimensional data of the heating furnace group are realized, the heat efficiency is improved, and energy consumption and emission are reduced; the system has the capabilities of fault prediction, cooperative scheduling and data security guarantee; and the man-machine interaction experience is improved, the production efficiency is improved, and intelligent upgrading of industrial heating is promoted.

The invention relates to the technical field of coal water slurry additive processing, and particularly discloses a heat exchange device for coal water slurry additive processing, which comprises a reaction kettle, an overhaul bin gate, a rotary sealing mechanism, a first stirring mechanism, a second stirring mechanism, a feeding pipe and a discharging pipe, and the overhaul bin gate is hinged to the front side of the reaction kettle to realize sealed opening and closing. According to the invention, integration of stirring and heat exchange functions and efficient removal of a source of reaction heat are realized; meanwhile, the second stirring mechanism realizes stepless regulation and control of the angles of stirring blades through a built-in electric driving assembly, so that the core technical problems of flowing dead zones, scaling and incapability of adapting to process changes caused by low heat exchange efficiency and function splitting of a traditional device are solved, and the device has the effects of high heat exchange efficiency, deposition prevention, self-cleaning and dynamic and adjustable stirring force.

The utility model provides a peak-shaving steam supply system for deep waste heat utilization of a thermoelectric unit, which deeply recovers cold end waste heat and flue gas waste heat of a cogeneration unit, is coupled with a two-stage compression heat pump, extracts waste heat to heat demineralized water, and serves as a primary heat source for supplying industrial steam, so that the waste heat participates in external heat supply; the superheater utilizes the generating capacity of the unit to enable industrial steam to reach steam supply parameters, the waste heat of the unit and the generating capacity are combined for external steam supply, the circulating heat efficiency is improved, the steam supply capacity is improved, meanwhile, the on-grid electricity is reduced, thermoelectric decoupling is achieved, the unit adjusting operation interval is expanded, the operation cost and pollutant emission are reduced, and peak regulation or spot transaction earnings are improved. And a clean, low-carbon, flexible, efficient, economical and energy-saving combined heat and power generation system is constructed.

The invention relates to the technical field of low-temperature gasification and heat management, and discloses an ice layer monitoring prediction and self-adaptive control device for a liquid hydrogen air temperature type gasifier. A data acquisition unit of the device acquires the running state of the gasifier and multi-source sensor data of an external environment; the weather prediction unit obtains weather change information in a future period and calculates a comprehensive influence coefficient of weather on the operation state of the gasifier; the data fusion and processing unit calculates an ice layer thickness correction value of each monitoring node according to the data of the multi-source sensor; the threshold value judgment unit judges the icing state of the node, and after the node is judged to be in the icing state, a judgment index representing the icing risk and the ice layer development trend is calculated; and the control response unit switches a deicing mode and executes a corresponding deicing control strategy according to the change state of the judgment index, and switches a high-energy-consumption deicing mode, a low-energy-consumption deicing mode and an observation mode. The deicing energy consumption of the gasifier is reduced, and the operation stability and the heat efficiency are improved.

The invention discloses a boiler energy efficiency prediction method and system based on sampling flue gas component analysis. The method comprises the following steps: acquiring heat flux density data of a plurality of radial positions, and inverting a temperature distribution profile through a radiation heat flux prediction model; constructing a multi-component concentration layering graph based on the diffusion equation and the component transport equation; constructing a sampling path optimization model by using temperature gradient and concentration fluctuation intensity information, driving a dynamic telescopic sampling probe to arrange a sampling position, and collecting a flue gas sample; the analysis model determines original concentration data, thermal-mass offset correction is executed in combination with temperature distribution, and a concentration correction function is constructed to obtain a corrected concentration value; and fusing boiler operation condition data, and inputting into the energy efficiency prediction model to output a heat efficiency index. According to the method, temperature field inversion driven by heat flux density is constructed, a multi-component concentration layering graph is generated in combination with a diffusion and transport model, and the spatial representativeness of flue gas sampling, the physical authenticity of component data and the accuracy of energy efficiency prediction are remarkably improved.

The invention discloses an air preheating biomass boiler, belongs to the technical field of boilers, and aims to solve the problems of low combustion efficiency, insufficient flue gas waste heat utilization and particulate matter emission of a traditional biomass boiler. Function optimization is achieved through a main body structure composed of a furnace body, a charging barrel and a rotating pipe, a double-spiral-disc heat exchange assembly is arranged in the charging barrel, biomass fuel is preheated through boiler exhaust smoke waste heat, meanwhile, smoke is discharged through exhaust holes after being distributed through spiral disc gas storage cavities, and unburned particles are filtered by a biomass layer and carried to a hearth to be subjected to secondary combustion; an air inlet cavity is formed in the rotating pipe, and air is preheated through the fixed pipe and the first connecting pipe and then input into the hearth. The exhaust assembly adopts a sliding rod and sealing block matched structure, and a convex block mechanism driven by a rotating pipe drives the sealing block to periodically move, so that gas in the charging barrel is intermittently exhausted through a double-layer filter screen. According to the boiler, the heat efficiency is improved through a smoke-air two-way preheating and particulate matter secondary combustion mechanism, and the biomass preheating, air heating and emission treatment process is optimized.

The invention discloses a liquid cooling heat dissipation control system of a charging pile, relates to the technical field of energy storage charging piles, and solves the problems of low-frequency oscillation and energy consumption fluctuation caused by independent closed-loop adjustment of a pump and a fan and fault false alarm and failure alarm caused by fixed threshold diagnosis in the prior art. The collection module is used for synchronously collecting and filtering the cooling liquid inlet and outlet temperature, the power module temperature, the pump current and the fan rotating speed; a first prediction modeling module is adopted to generate thermal load prediction and time delay compensation parameters; constructing a self-adaptive baseline relationship between the pump flow and the heat exchange efficiency of the fan through a second baseline modeling module; performing dynamic anomaly judgment based on the residual sequence through a residual detection module; the cooperative scheduling module is used for solving the control track of the pump and the fan by combining the prediction result, the baseline parameter and the abnormal label on the basis of a model prediction control framework; according to the invention, the coordination of liquid cooling heat dissipation control and the adaptability of fault diagnosis are greatly improved.

The invention provides a cooling and lubricating system, a vehicle and a control method of the cooling and lubricating system. The system comprises an oil pan and a conveying pipeline, and the inlet end of the conveying pipeline communicates with the oil pan; the power element, the filtering element, the driving element, the heat exchange element and the speed reduction element are sequentially arranged on the conveying pipeline in the conveying direction of lubricating oil. The outlet end of the conveying pipeline communicates with the oil pan. The temperature detection part is arranged between the filtering element and the driving element so as to detect the real-time temperature of the lubricating oil filtered by the filtering element; and the controller is connected with the temperature detection part so as to control at least one of the rotating speed of the power element, the rotating speed of the driving element, the rotating speed of the speed reduction element and the heat exchange efficiency of the driving element according to the real-time temperature. And the size is huge.

The invention belongs to the technical field of industrial waste heat resource utilization, and provides a hydrogen-fused salt energy storage coupled industrial waste heat recovery hydrogen production system and method, a fused salt energy storage subsystem comprises an energy storage module and a waste heat heat exchange module which are connected with each other, and a thermochemical circulation subsystem adopts a reactor; the reactor adopts a horizontal fixed bed reactor, and CaO-Ca (OH) 2 particles are filled in the reactor; a heat absorption stage: the high-temperature molten salt flows through a reactor jacket, a bed layer is heated to a first preset temperature, Ca (OH) 2 is subjected to a decomposition reaction, and nitrogen is introduced in the reaction process; a heat release stage: introducing water vapor into the reactor, carrying out hydration reaction on the water vapor and CaO, heating the fused salt to a second preset temperature by virtue of reaction heat release, and providing a heat source for the electrolytic hydrogen production subsystem; through coupling of a fused salt energy storage system and CaO-Ca (OH) 2 thermochemical circulation, efficient recovery and utilization of low-grade waste heat at the temperature of 300-500 DEG C are achieved, an electrolytic bath is driven to produce hydrogen at low cost, the heat efficiency of the system is improved to 75% or above, and green hydrogen self-supply in the high-energy-consumption industry is promoted.

The invention relates to the technical field of energy consumption optimization, and provides a heater energy consumption optimization method and system based on gas-steam combined cycle. The method comprises the steps that gas turbine exhaust, waste heat boiler steam and heater operation parameters are collected in real time, and a dynamic energy consumption data set is constructed; training a load prediction model based on the historical load curve and the meteorological data, and outputting future load distribution; performing multi-working-condition energy consumption simulation according to the data set and the predicted load, and generating an energy consumption characteristic topological graph and a thermal efficiency fluctuation graph; and based on the atlas, optimizing heater control parameters by taking energy consumption minimization as a target, generating an optimal control set, and regulating and controlling the running state of the heater. The technical problems that in an existing gas-steam combined cycle system, heater energy consumption control is not accurate, and efficiency fluctuation is large are solved, and the technical effects that through combination of real-time data collection and a prediction model, heater energy efficiency optimization and control parameter dynamic adjustment are achieved, and therefore energy consumption is reduced to the maximum extent, and heat efficiency is improved are achieved.

The invention relates to the technical field of aviation aircraft power systems, and discloses an aero-engine liquid hydrogen fuel conveying system and a control method thereof, which adopt multi-branch high-precision metering to realize wide-range high-precision flow regulation requirements, determine branch through-flow capability by a root order method, and realize high-precision flow regulation of the aero-engine liquid hydrogen fuel conveying system. The number of hydrogen supply branches, the available regulation ratio of the regulating valve and the total flow regulation ratio demand are matched, and the problem of high-precision fuel conveying in an extremely wide flow regulation range is solved. The circulating coupling heat exchanger is adopted to reasonably utilize waste heat of the system to raise the temperature of hydrogen fuel to the level suitable for combustion, reasonable optimization of heat / energy utilization of the system is achieved, fuel consumption is reduced, and circulating heat efficiency is improved. The hydrogen temporary storage tank is adopted to solve the problem that the supply flow of an upstream liquid hydrogen pump and a heat exchanger is not matched with the flow required by a downstream regulating valve due to hysteresis in the heat exchange process in the fuel flow regulation transient process.

The invention relates to the technical field of fluid machinery, in particular to a heater and a compressor assembly, a ceramic heating plate is arranged on a heat conducting plate through nickel plating, reflow soldering and the like, heat is transferred to a containing space of the heater through the heat conducting plate, and the situation that the ceramic heating plate directly makes contact with fluid, boiling is generated, and consequently the heat exchange efficiency is reduced is avoided. The combination mode of nickel plating bottom welding can enable the ceramic heating plate and the heat conduction plate to be combined more tightly, heat loss is small during heat conduction, and heat exchange efficiency is not affected.

The invention discloses a high-performance and long-service-life gearbox assembly which comprises a gearbox body, a gear shaft and a gear. The gear shaft is installed in a bearing sleeve through a first rolling bearing. A fan assembly is mounted on the right end shaft section of the gear shaft; the centrifugal fan is characterized in that the fan assembly comprises a shell, a first impeller, a second impeller and a second rolling bearing, the first side wall of the shell is fixedly connected with an end flange of the bearing sleeve, and the first impeller and the second impeller are installed on the right end shaft section and installed in an impeller cavity defined by the shell; the inner peripheral wall of the second impeller is connected with the right end shaft section through a second rolling bearing; the gear shaft can drive the first impeller to rotate in a torque transmission mode, and at the moment, the second impeller passively rotates under the acting force of suction airflow of the first impeller. The suction performance, flow and efficiency of the fan assembly can be improved, so that the heat dissipation effect on the bearing is improved, the heat exchange efficiency of airflow in the gearbox is improved, the operation performance of the gearbox is improved, and the service life of the gearbox is prolonged.

The invention provides a heat exchange system and a heat exchange method. The heat exchange system comprises a turbulent flow gas supply component. The evaporator comprises a shell, an evaporation pipe and a turbulent flow pipe, the evaporation pipe and the turbulent flow pipe are both arranged in the shell, the turbulent flow pipe is located below the evaporation pipe, a plurality of spraying holes are formed in the turbulent flow pipe, and the turbulent flow inlet end of the turbulent flow pipe communicates with the outlet end of the turbulent flow gas supply component so that turbulent flow gas can be conveyed into the turbulent flow pipe. Turbulent flow gas is jetted to the surface of the evaporation pipe through the jet holes so as to destroy a thermal boundary layer formed on the surface of the turbulent flow pipe; the inlet end of the compressor is communicated with the outlet end of the evaporator; the inlet end of the condenser is communicated with the outlet end of the compressor, and the outlet end of the condenser is communicated with the inlet end of the evaporator; the problem that in the prior art, when a flooded evaporator is under the working conditions of low load, low flow speed and the like, the heat exchange efficiency is remarkably reduced due to the fact that a heat boundary layer is formed on the surface of an evaporation pipe is solved.

A lubricating oil pipeline forming a U-shaped channel and a refrigerant containing cavity surrounding the pipeline are arranged in a box body, a refrigerant inlet is formed in the bottom of the refrigerant containing cavity, and a refrigerant outlet is formed in the top of the refrigerant containing cavity. A refrigerant inlet and an oil inlet section of the U-shaped channel are arranged on the same side, and a refrigerant outlet and an oil outlet section of the U-shaped channel are arranged on the same side, so that a heat exchange mode that refrigerants and lubricating oil flow reversely in a high-temperature area and flow downstream in a low-temperature area is formed; heat exchange fins are arranged on the outer wall of the U-shaped channel in the circumferential direction. A porous ceramic area used for adsorbing bubbles can be arranged on the inner side wall of the box body. Through countercurrent flow heat exchange of the U-shaped pipeline, the heat exchange efficiency is improved, the temperature of lubricating oil can be stably controlled to be smaller than or equal to 40 DEG C, the problem of lubrication failure caused by too high oil temperature of the disc separator is solved, and therefore the reliability of the disc separator under long-term high-load operation and the service life of a bearing are guaranteed.

The invention discloses a dust removal control method for a heat dissipation fan of a new energy truck, which comprises the following steps of: by taking an FCU and power-on linkage of the whole truck as a starting point, performing self-inspection on a power supply link, a communication link, a driving link and a sensing link, and forcibly executing one-time reverse dust removal after the power supply link, the communication link, the driving link and the sensing link are qualified; pWM is adjusted in real time based on segmented threshold values of the motor temperature and the controller temperature and linear mapping, the duty ratio is restrained by the change rate, and rotation stopping buffering is conducted before forward / reverse rotation switching; when the temperature exceeds the limit, full-load heat dissipation is preferentially carried out, and power is limited in cooperation with the MCU; and meanwhile, periodic dust removal including smooth speed reduction, rotation stopping, reverse rotation, rotation stopping and recovery according to mapping is executed in a non-emergency heat dissipation window according to RTC accumulated forward rotation working hours. According to the method, the problems that dust accumulated in the air duct is difficult to remove online, heat dissipation control is extensive and the overheating risk is high under the high-dust working condition are solved, and the technical effects that the air volume and the heat exchange efficiency are stable, energy consumption and NVH are reduced, and the maintenance frequency and the fault rate are reduced are achieved.

A high-temperature heat storage and exchange device comprises a heat storage and exchange module, a heat exchange module and a first heat release and exchange module, a first heat exchanger and a plurality of first overflow pipes are arranged in the heat storage and exchange module, and steam and fused salt flow into the heat storage and exchange module to exchange heat by means of the first heat exchanger; the fused salt subjected to heat exchange overflows to the top of the heat exchange module through a first overflow pipe, and steam subjected to heat exchange flows out of the heat storage and exchange module; a plurality of second overflow pipes are arranged in the heat exchange modules, and the fused salt overflows to the top of the next heat exchange module or the top of the first heat release heat exchange module through the second overflow pipes; a plurality of second heat exchangers which are arranged side by side are arranged in the first heat release and exchange module, the second heat exchangers are inclined coil pipes which are spirally upward, feed water or steam flows into the first heat release and exchange module to exchange heat with the fused salt by means of the second heat exchangers, and the steam after heat exchange flows out of the first heat release and exchange module. The heat storage efficiency and the heat exchange efficiency are improved by optimizing the flowing paths of steam and fused salt.

The utility model relates to the technical field of refrigeration equipment, and particularly discloses a heat exchange unit. The heat exchange unit comprises a heat exchange core body, a water treatment device and a spraying loop, spraying liquid circulates in the spraying loop, the spraying loop is used for spraying the spraying liquid to the heat exchange core body, a liquid storage tank and a valve are arranged in the spraying loop, and the valve is used for switching the spraying loop between a first state and a second state; in the first state, the water treatment device is connected into the spraying loop, and spraying return liquid in the spraying loop enters the liquid storage tank to circulate after being treated by the water treatment device; in the second state, the inlet of the water treatment device is communicated with the liquid supplementing opening, and spraying return liquid in the spraying loop is bypassed to the liquid storage tank for circulation. By applying the heat exchange unit provided by the utility model, the circulating spray liquid can be treated in real time, the water quality of the spray liquid is ensured, the maintenance frequency of the heat exchange core body structure is reduced, and the heat exchange efficiency of the heat exchange core body is ensured.

A modular utility system integrates clean power generation, thermal management, and security monitoring within a standardized shipping container format. The system comprises a generator set (70 kW-600 kW) configured for operation with multiple fuel sources including natural gas, propane, methane, or hydrogen, coupled to a water-fired absorption chiller utilizing waste heat recovery. A closed-circuit evaporative cooler enhances thermal efficiency without chemical additives. The system incorporates a 360-degree security camera and remote monitoring capabilities for tracking operational parameters. A power distribution panel (460V, 3-phase) supports both building power supply and electric vehicle charging stations. The modular architecture enables scalable deployment through dual-module configurations, with separate power generation and thermal management units. The system provides sustainable, off-grid power generation while maximizing energy efficiency through integrated waste heat utilization and advanced thermal management protocols.

The invention relates to a doorsill beam assembly integrated with a heat exchange runner and a vehicle, and belongs to the technical field of vehicle cooling systems.The doorsill beam assembly comprises a doorsill beam body, and an exhaust channel and a cooling liquid channel are arranged in the doorsill beam body; the cooling liquid channel comprises a first cooling liquid channel adjacent to the exhaust channel and a second cooling liquid channel far away from the exhaust channel; the flow path switching device is arranged at the end part of the doorsill beam body, and the flow path switching device is configured to connect the first cooling liquid channel or the second cooling liquid channel into the cooling liquid loop in a switchable manner or isolate the first cooling liquid channel or the second cooling liquid channel from the cooling liquid loop; and the heat exchange efficiency between gas and liquid in the doorsill beam body is adjusted by selecting the position of the channel through which the cooling liquid flows. According to the heat requirement of the load, liquid is selected to flow through the cooling liquid channel adjacent to the exhaust channel or the cooling liquid channel away from the exhaust channel, the heat exchange efficiency can be adjusted, and the heat using requirements of different working conditions are met.

The invention relates to the field of cracking, and discloses a direct electric heating cracking furnace, application and a method for preparing olefin through cracking, the cracking furnace comprises a preheating section, a cracking section and a post-treatment section, and the cracking section adopts a metal furnace tube with resistance gradually reduced in the material flowing direction; the metal furnace tube is directly connected with the electric heating component; the preheating section is used for preheating cracking raw materials and diluting steam; the cracking section is used for cracking the preheated cracking raw material in the presence of the preheated steam; and the post-treatment section is used for cooling and separating the cracking product. According to the direct electric heating cracking furnace disclosed by the invention, heat is directly generated from the heated metal furnace tube instead of being transmitted from the outside through heat radiation, so that the thermal efficiency is high, the heat loss is small, the heating speed is high, the cracking preparation of low-carbon olefin is facilitated, and each product has relatively high yield.