91 results about "Intermediate temperature" patented technology

The invention belongs to the technical field of energy conservation and emission reduction of sintering circular coolers, and particularly relates to a sintering circular cooler medium-temperature area cross circulation combined waste heat total recovery and zero emission system which comprises a circular cooler, a circular cooling air blower, a waste heat boiler, a circulating fan, a steam turbine generator unit, a condenser and a condensate pump. The waste heat boiler is formed by combining two sets of waste heat boilers, one set of waste heat boiler is a first-section and second-section waste heat boiler, flue gas is taken from a first section and a second section, and exhaust air at the bottom of the first-section and second-section waste heat boiler returns to the first section and the second section through a circulating fan; the other set of waste heat boiler is an overhead three-section waste heat boiler, flue gas of the three-section waste heat boiler is taken from a third section, exhaust air of the three-section waste heat boiler returns to a fourth section, and flue gas of the fourth section returns to the third section; the two waste heat boilers are communicated with a steam supplementing opening of the steam turbine generator unit. The system has the advantages that a new waste heat utilization steam and hot water circulation system is constructed by utilizing the steam supplementing and condensing type steam turbine, and zero emission is realized.

This utility model discloses a hot and cold circulating water supply mechanism and device, relating to the field of hot and cold circulating water supply mechanisms and devices. It includes a mounting frame, with a hot water storage tank fixedly connected to the front of the mounting frame, and a cold water storage tank fixedly connected to the front of the mounting frame. A refrigeration unit is fixedly connected to the bottom of the cold water storage tank. Both the hot water storage tank and the refrigeration unit are equipped with a mixing temperature control mechanism at their bottoms. Through this mixing temperature control mechanism, a linear regulating valve precisely controls the mixing ratio of hot and cold water, causing the mixed water to impact the turbine blades under gravity, generating vortices and ensuring thorough mixing within the mixing tank. Temperature sensors feed back data to the control panel for closed-loop control, directly producing water at an intermediate temperature. This avoids the energy waste of secondary heating of cold water or secondary cooling of hot water, reducing energy consumption and further avoiding frequent start-ups and shutdowns of the refrigeration unit and heating elements, thus extending equipment lifespan.

The invention relates to a waterway temperature design method for a carbon dioxide cascade heat pump hot water system. Firstly, the water supply and return temperature is determined according to engineering requirements, and cascade circulation is established with a non-carbon-dioxide working medium as a high-temperature stage and a carbon dioxide working medium as a low-temperature stage; calculating the evaporation and condensation temperature of each unit and the intermediate temperature of the system by assuming the intermediate temperature of return water; and then an energy balance equation is established, the working medium flow ratio is calculated, and water temperature checking and iterative optimization are carried out. According to the method, scientific design of the return water temperature can be achieved, the heating efficiency of the system is improved on the premise that the outlet water temperature is guaranteed, the method is suitable for engineering design and optimization of the carbon dioxide cascade type air source heat pump hot water system, and development of the clean heat supply technology, energy transformation and environmental protection are promoted.

A method for controlling the main steam temperature of a thermal power unit, belonging to the field of thermal automation control, utilizes an iterative predictive controller to control the primary and secondary desuperheating water regulating valves. The method automatically adjusts the intermediate temperature setpoint based on historical operational data of the thermal power unit's superheating desuperheating water usage and intermediate temperature, maintaining sufficient margin for adjusting the main steam temperature. This method improves the mean main steam temperature, enhances the economic efficiency of the thermal power unit, reduces the amplitude of main steam temperature fluctuation, and reduces the risk of leakage in the final superheater tube wall due to thermal alternating stress. The method provided by the present invention requires fewer adjustment parameters, is highly feasible, and improves control accuracy.

The present application belongs to the technical field of aviation turbine engine, and discloses an intercooling regenerative water enhanced turbofan engine, which comprises a Brayton cycle and a supercritical water vapor Rankine cycle in a main flow path, the two cycles are closely related, and are coupled by increasing a steam turbine, a steam generator and a condenser. The steam turbine does work to supply a high-pressure compressor, and liquid water appears at the steam turbine outlet, the liquid water is injected into the high-low pressure compressor for intercooling, the intermediate temperature of the compressor is reduced, the power consumption of the compressor is reduced, the unit working medium thrust is improved, the intercooler is saved, and the application is facilitated, the low-temperature steam at the steam turbine outlet can be injected into the low-pressure turbine inlet for cooling, and the cold air amount can be effectively reduced and the unit working medium thrust can be improved. The present application effectively overcomes the high temperature difference and large loss of the steam generator, compared with the conventional aviation engine, the total efficiency of the engine can be greatly improved, the fuel consumption rate and the pollutant emission are reduced.

Provided are a braking temperature control method and system for an electromechanical brake. In the braking temperature control method for an electromechanical brake provided by the present disclosure, an intermediate temperature is obtained based on temperatures acquired by thermistors mounted on a stator winding, and a braking temperature control solution is generated based on a relationship between the intermediate temperature and a preset temperature, to control the heating of an electromechanical braking (EMB) driving motor. Therefore, under a conventional temperature control strategy, the operating environment of the EMB driving motor can be effectively improved, and the EMB efficiency is ensured. In addition, in a high-temperature abnormal operating state of the EMB driving motor, the operating temperature of the driving motor can be effectively controlled through a braking force redistribution strategy, thereby avoiding the braking failure caused by motor overheating.

A method for hot stamping a plurality of blanks includes providing a plurality of blanks. The method further includes simultaneously heating the plurality of blanks in a batch furnace at an intermediate temperature for a first period of time. The method further includes heating at least one of the plurality of blanks in a batch furnace after heating the at least one of the plurality of blanks in the batch furnace, heating the at least one of the plurality of blanks in a roller hearth furnace at a stamping temperature for a second predetermined period of time. The method further includes stamping the at least one blank of the plurality of blanks in a mold after heating the at least one blank of the plurality of blanks in the roller hearth furnace.

Provided is a manufacturing method of composite-phase steel. The method includes: reheating a steel slab including, by wt %, C:0.05 to 0.15%, Si:0.01 to 1.0%, Mn:1.0 to 2.3%, Al:0.01 to 0.1%, Cr:0.005 to 1.0%, P:0.001 to 0.05%, S:0.001 to 0.01%, N:0.001 to 0.01%, Nb:0.005 to 0.07%, Ti 0.005 to 0.11%, Fe and unavoidable impurities at a temperature of 1200 to 1350° C.; finish hot rolling the reheated steel slab; primarily cooling the hot-rolled steel sheet to a mid-temperature range of 550 to 650° C.; and secondarily cooling a region of the head part and the tail part corresponding to an outer wound portion of a coil during winding to a temperature range from 450 to 550° C., and secondarily cooling a region of the mid part corresponding to an inner wound portion of the coil to the temperature range from 400 to 500° C., and coiling the secondly cooled steel sheet.

A process for the catalytic cracking of a liquid ammonia feedstock to produce a cracked gas stream, comprising the steps of i) heating the liquid ammonia feedstock to an intermediate temperature by heat exchange with a liquid heat exchange medium to produce a cooled liquid heat exchange medium; and ii) using the intermediate temperature liquid ammonia feedstock to provide cooling to one or more downstream processes.

A facility has an ambient zone (30); a lower temperature storage space; an intermediate temperature storage space (42); a higher temperature storage space (44); a plurality of HVAC systems (430, 432, 434) for controlling temperature and humidity in the storage spaces; automated equipment for moving material through the storage spaces and presenting the material for fulfillment of orders. The automated equipment moves in an automation zone (50, 52) above and traversing the storage spaces (42, 44).

This invention relates to the field of integrated molding in the low-to-intermediate temperature range of aero-engines, specifically to a method for constructing a "sandwich structure" to prevent cracking. This invention combines laser-directed energy deposition technology with gradient structure transition design. Through precise control of process parameters and synchronous powder feeding from multiple powder bins, a dual-interface "sandwich structure" of "TC4 matrix - gradient transition structure - Inconel 718 material" can be successfully constructed, achieving integrated molding of heterogeneous materials. The "sandwich structure" designed in this invention can alleviate stress concentration caused by drastic compositional changes, reduce cracking tendency, achieve good metallurgical bonding between TC4 and Inconel 718, and solve problems such as easy cracking failure and poor load-bearing capacity in heterogeneous material connections. This invention features a reasonable structural design, a simple and controllable manufacturing process, and produces a product with excellent performance, facilitating industrial application.

The invention relates to a facility (2) for producing dihydrogen, comprising: • a heating system (6) configured to provide at least one heated-water stream (8); and • an electrochemical system (4) which has a plurality of stacks (10), each configured to produce an outlet gas stream (12) from a respective heated-water stream; the heating system comprising: • a primary heating device (18) configured to bring the inlet water stream to an intermediate temperature, so as to form an intermediate water stream (22); and • a plurality of secondary heating devices (20), each being connected at the outlet of the primary heating device (18) so as to receive a respective fraction of the intermediate water stream, and being configured to bring the fraction received to a nominal operating temperature of a corresponding stack (10), so as to form the heated-water stream (8) supplying the stack (10).

The present application relates to a kind of 900MPa level magnetic yoke steel plate and its preparation method, wherein the preparation method includes rolling blank into steel strip, and the rolling temperature of final rolling is 820~900 ℃;Two-stage cooling process is used to cool the steel strip after final rolling, wherein, the first stage cooling is to cool the steel strip after final rolling to intermediate temperature 650~750 ℃ according to the cooling speed of 20~40 ℃ / S, the second stage cooling is to cool the steel strip to 250~350 ℃ according to the cooling speed of 90~110 ℃ / S;And the steel strip cooled to 250~350 ℃ is treated to obtain 900MPa level magnetic yoke steel plate.The microstructure of the magnetic yoke steel plate prepared by the present application is two-phase structure of ferrite and martensite, and the strength and toughness are better matched;The magnetic yoke steel plate prepared by the present application has good magnetism.

This application relates to the field of industrial energy conservation and energy storage, and discloses a steam supply system and method coupling industrial waste heat recovery and molten salt energy storage, including a heat pump propellant subsystem, a molten salt energy storage subsystem, and a steam generation coupling unit. The heat pump propellant subsystem is configured to recover low-temperature industrial waste heat using a transcritical carbon dioxide heat pump to preheat the working fluid water to the intermediate temperature of the sensible heat section; the molten salt energy storage subsystem is configured to use electrical energy to heat the molten salt working fluid to a high-temperature state and store it; the steam generation coupling unit has a physically isolated channel internally, configured to use high-temperature molten salt to bear the latent heat of vaporization and superheat load of the working fluid water. This invention, through a temperature-gradient utilization architecture, significantly reduces the consumption of high-grade electrical energy by utilizing low-grade waste heat, enabling the system's overall energy efficiency to exceed the pure electrothermal limit. Simultaneously, the use of intermediate-temperature feedwater avoids the risk of freezing and blockage at the molten salt heat exchange interface, achieving safe and efficient production of high-quality steam.

A process for the catalytic cracking of a liquid ammonia feedstock to produce a cracked gas stream, comprising the steps of: heating the liquid ammonia feedstock to an intermediate temperature by heat

The invention discloses a device and a method for improving the uniformity of a liquid phase epitaxy tellurium-cadmium-mercury film. The device comprises an airflow ingress pipe, a cover plate containing an air guide groove, a fixed module, a free sliding module, a sample bearing table and a support frame. Four gas storage tanks for heat exchange are designed on the periphery of the mother liquor tank, a temperature field which is gradually reduced from the periphery of the mother liquor to the center of the mother liquor is formed by controlling the temperature of heat exchange gas, the temperature field is just opposite to an original mother liquor temperature field structure with high middle temperature and low peripheral temperature, and a high-uniformity temperature field structure is formed through mutual counteraction; meanwhile, in order to adjust the temperature field structure in real time, three cylindrical grooves which are located in the same horizontal plane and are parallel to one another are designed in the supporting frame structure, a plurality of thermocouples can be configured to obtain a temperature distribution matrix graph in real time, the temperature distribution matrix graph is used for adjusting the temperature of heat exchange gas in real time, and the uniformity of a high-temperature field in the whole epitaxial growth process is guaranteed. And the liquid phase epitaxial growth of the oversized tellurium-cadmium-mercury thin film with high uniformity is effectively supported.

This invention belongs to the field of thermoelectric conversion technology, specifically a rechargeable thermo-regenerative electrochemical cycle battery based on thermosensitive crystallization-enhanced thermoelectric potential and its usage method. It includes a positive electrode, a negative electrode, a positive electrolyte, a negative electrolyte, and a cation exchange membrane. The electrode potentials in the positive and negative electrolytes are equal at an intermediate temperature, and the battery voltage is 0V. The positive and / or negative electrolytes also contain additives that induce thermosensitive crystallization of oxide or reduced ions in the electrolyte. The additives induce the oxide or reduced ions to dissolve at a first temperature and crystallize at a second temperature. The battery thermoelectric potential is increased through this thermosensitive crystallization process. The proposed thermo-regenerative electrochemical cycle battery requires no electrical assistance and can discharge at both high and low temperatures. The high thermoelectric potential based on the thermosensitive crystallization effect improves the battery's operating voltage, capacity, and thermoelectric conversion efficiency, achieving efficient recovery and conversion of low-grade heat.

The application belongs to the technical field of hard alloy materials, and particularly relates to a high-toughness WC-Co hard alloy and a preparation method thereof, the preparation method comprising the following steps: adopting tungsten carbide powder, cobalt powder, tantalum carbide powder, a boron source and tungsten powder as raw materials; mixing, ball-milling all the boron source, the tungsten powder and part of the cobalt powder to obtain a first slurry; mixing, ball-milling all the tungsten carbide powder, the tantalum carbide powder and the remaining cobalt powder to obtain a second slurry; mixing the first slurry and the second slurry, and performing ball-milling, drying and pressing; then performing sintering in three stages to obtain the WC-Co hard alloy. Through the synergistic design of "pre-alloying wet milling" and "intermediate temperature holding", the uncontrollable boron diffusion reaction process is guided to a directional and progressive reaction path of "B->Co2B->WCoB", so that the formation of harmful phases such as brittle WB is avoided, the micro morphology of the WC-Co hard alloy is optimized, and the mechanical properties are improved.

The application relates to a method for improving the medium-temperature plasticity of a wrought superalloy, which comprises the following steps: solid solution treatment is carried out on a formed wrought superalloy blank to obtain a solid solution treated blank; rough machining treatment is carried out on the solid solution treated blank to obtain a rough machining treated blank; the rough machining treated blank is annealed at a temperature of Tw+(10-30 DEG C) for 5-10 hours, and after cooling, a first aging treated blank is obtained; wherein Tw is the highest working temperature of the wrought superalloy part; the first aging treated blank is kept at a temperature of Tw+ / -10 DEG C for 25-100 hours, and after cooling, a second aging treated blank is obtained; and the second aging treated blank is subjected to finish machining treatment to obtain the wrought superalloy part. The application can effectively improve the grain boundary bonding force of the wrought superalloy, improve the plasticity of the alloy without changing the alloy composition, and provide a guarantee for the safe service of the wrought superalloy with high temperature bearing capacity.

A system for energy recovery has a main installation (1), during operation of which hot exhaust gas (2) is generated. The main plant (1) has a discharge device (3) through which the exhaust gas (2) flows and via which the exhaust gas (2) is discharged from the main plant (1). The system has a compressor unit (6) comprising a plurality of compressors (8), by means of which air (7), which is fed to the compressor unit (6) and has an initial temperature (T1), is compressed from an initial pressure (p1) to a final pressure (p2) and an intermediate temperature (Tc). The system has a heat exchanger (10) arranged downstream of the compressor unit (6), through which air (7) compressed to a final pressure (p2) and to an intermediate temperature (Tc) flows and by means of which heat of the exhaust gas (2) flowing through the discharge device (3) is fed to the air (7) flowing through the heat exchanger (10) in order to heat the air (7) to a final temperature (T2). The system has a compressed air motor (11) arranged downstream of the heat exchanger (10), to which air (7) heated to a final temperature (T2) and having a final pressure (p2) is fed, which is operated with the air (7) and from which the air (7) is discharged at a discharge temperature (T3) and a discharge pressure (p3).

The utility model discloses a thick-film three-dimensional heating low-noise teakettle, which comprises an inner container, an outer container and a control device, a thick-film heating body is arranged at least at the lower part of the outer wall of the inner container, the installation position of the thick-film heating body is fully covered, and a temperature control switch is arranged at the position close to the thick-film heating body. The outer container is fixedly arranged on the periphery of the inner container, the control device is electrically connected with the temperature control switch and the thick film heating body, a traditional bottom heating mode is changed, heat transfer of the side wall from outside to inside is achieved, in the heating process, the peripheral temperature of liquid is high, the middle temperature of the liquid is low, and therefore water with the low temperature can sink in a certain position; water with high temperature can move towards the middle position, smooth water circulation is achieved, bubbles generated by water accumulation at the heating position are avoided, noise can be greatly reduced, and water scale can be reduced in the process.

According to the condensing device and method for in-situ preparation of the icicle projectiles, the size of a spallation projectile injection system can be reduced, the cold source utilization efficiency is improved, and the requirement of a future large fusion device for a plasma fracture relieving system is better met. The condensing device comprises: a condenser for desublimating the raw material gas into pellets in a condensing area; the precooler is used for precooling the raw material gas; the vacuum heat insulation shell provides a vacuum heat insulation environment for the condenser and the precooler; the intermediate temperature shielding part is in thermal contact with the precooler and is used for reducing radiation heat exchange between the condenser and the vacuum heat insulation shell, the intermediate temperature shielding part is provided with a cooling medium flow path and a raw material gas flow path, the upstream end of the raw material gas flow path is connected with a raw material gas supply source and reaches the condenser after flowing through the precooler, and the downstream end of the raw material gas flow path reaches the vacuum heat insulation shell after flowing through the precooler. The upstream end of the cooling medium flow path is connected with a cooling medium supply source and sequentially flows through the condenser and the precooler from the upstream to the downstream, and the downstream end of the cooling medium flow path is connected with a cooling medium recovery device.

The invention relates to the technical field of high-temperature-corrosion-resistant protective coatings, in particular to an organic silicon-phosphate interpenetrating network coating as well as a preparation method and a spraying method thereof. The coating comprises the following components in parts by mass: a component A, namely an organic silicon prepolymer, a component B, namely a modified rare earth-functional filler, a component C, namely an inorganic phosphate solution and a component D, namely a water-based curing accelerator, wherein the mass ratio of A to B to C is (30-40): (40-50): (10-20), and D is 1% of the total mass of A, B and C. A flexible organic silicon network and a rigid phosphate network are interpenetrated in a molecular scale to form a Si-O-P-Al-M (M is rare earth, Mg and Zn) hybrid skeleton; meanwhile, rare earth oxide / silicate is introduced to serve as a high-temperature self-healing pinning phase, and rare earth oxygen vacancies are utilized to migrate at high temperature to seal and fill microcracks; a sol-gel and secondary curing process is adopted, three-step gradient curing of normal-temperature condensation, medium-temperature organic crosslinking and high-temperature inorganic ceramization is achieved, and thermal stress is relieved.

A method for forming lithium-free glass articles includes: heat-treating the glass article to impart a hypothetical temperature, and ion-exchanging the heat-treated glass article. The heat treatment includes: heating the glass article to a holding temperature between 130°C below and 20°C above its annealing point; holding the glass article at the holding temperature for a continuous holding period; cooling the glass article from the holding temperature to an intermediate temperature at a first cooling rate; and cooling the glass article from the intermediate temperature to room temperature at a second cooling rate. The ion-exchanged glass article includes: a compressive stress greater than or equal to 900 MPa, as measured for an article with a thickness of 1.1 mm; and a warpage less than or equal to 0.3 mm, as measured for an article with a length less than 200 mm.

A heat pump water heater system includes a water source providing water at a water source temperature to inlet water line(s). The system includes heat pump (“HP”) circuits that involve a heat exchanger, such as an upper HP circuit and a lower HP circuit or a main HP circuit and an auxiliary refrigerant line. The heat exchanger thermally connects the HP circuits and / or auxiliary refrigerant line to facilitate heat exchange between refrigerants flowing therethrough to allow the HP circuits to operate with different pressure differentials, improving efficiency. Heat is also be exchanged to water tanks thermally coupled to the inlet water line(s) and various HP circuit components such that outlet water lines can deliver water at a first temperature, a second temperature, or at an intermediate temperature between the two by mixing water from one or more tanks and / or inlet water lines.

This invention relates to a test method for simulating the formation of iron oxide scale on hot-rolled steel plates, belonging to the technical field of hot-rolling production methods. The technical solution of this invention is as follows: A sample is placed in a heating furnace or quenching apparatus and sequentially undergoes three stages: simulated finishing rolling, layer cooling, and coiling. In the finishing rolling stage, the temperature is raised from room temperature to the starting temperature at a certain heating rate, and then cooled to the final rolling temperature at a certain rate. In the layer cooling stage, the temperature is lowered from the final rolling temperature to an intermediate temperature at a certain cooling rate, and then further cooled to the coiling temperature at a certain cooling rate. Upon reaching the coiling temperature, a vacuum is rapidly drawn and nitrogen gas is introduced, and the temperature is lowered from the coiling temperature to an intermediate temperature at a certain cooling rate. After holding at this temperature for a certain time, the sample is naturally cooled to room temperature. The sample is then subjected to preparation, and the surface iron oxide scale is observed to obtain the relevant characteristics of the iron oxide scale. The beneficial effects of this invention are: the simulated experiment closely resembles the actual process and temperature, providing accurate results on the characteristics of the iron oxide scale; the experiment is highly operable and easy to implement.

A method of steam cracking includes using a steam cracking arrangement that has a fired cracking furnace, a quench cooling train, and rotating equipment at least partly driven by electric energy. A process gas stream is passed through the furnace and the cooling train. A steam generation arrangement, operated in thermal association with the cracking arrangement, results in superheated high pressure steam at a first pressure level of 30 and 175 bar absolute pressure and at a first temperature level. No steam at a higher temperature level than the first is generated. The superheated high pressure steam is partially adiabatically and isenthalpically expanded to a second lower pressure level. The first temperature level is selected such that each intermediate temperature level reached at intermediate pressure levels of more than 20 bar during the adiabatic and isenthalpic expansion process is between 5 and 120 K above the dew point of steam.

A coffee machine is provided. The coffee machine may include a water line configured to supply water, a pump configured to pressurize the water, a first in-line heating element configured to heat the water to an intermediate temperature, a second in-line heating element configured to heat the water from the intermediate temperature to a temperature set point during an extraction process, and one or more electronic control modules configured to receive brewing settings, the brewing settings including the at least one temperature set point, estimate, based partially on the intermediate temperature, a flow rate of the water through the first in-line heating element, and adjust, based at least partially on the estimated flow rate, a power provided to the second in-line heating element.

This invention discloses a vapor-jet enthalpy-increasing cascade high-temperature heat pump system and its capacity method. The system uses a low-temperature flash evaporator and a high-temperature flash evaporator to perform gas-liquid separation of the two-stage circulating refrigerant. The gaseous refrigerant separated by the low-temperature flash evaporator enters the compressor's gas supply port in the low-temperature cycle, and the gaseous refrigerant separated by the high-temperature flash evaporator enters the compressor's gas supply port in the high-temperature cycle. The capacity method calculates thermodynamic parameters such as heating capacity, condenser outlet steam temperature, and flow rate using a heat pump cycle simulation model and a heat and mass transfer model. Then, by adjusting the condensing pressure, evaporating pressure, and the pinch point temperatures of the condenser, condenser-evaporator, and evaporator, the desired subcooling, superheating, intermediate temperature, and high / low-temperature flash evaporator outlet temperature are achieved. This invention increases the flow rate of gaseous refrigerant entering the compressor, improves the coefficient of performance of the vapor-jet enthalpy-increasing cascade high-temperature heat pump system under low-temperature conditions, and avoids increasing system complexity.