635 results about "Cold side" patented technology

A gas turbine engine is provided, having: a bifurcation; and a turbomachine further including a cooled cooling air (CCA) system, the CCA system having: a cold side bleed assembly defining an inlet positioned to be in fluid communication with an airflow over the bifurcation; a CCA heat exchanger in thermal communication with the cold side bleed assembly downstream of the inlet of the cold side bleed assembly; and a hot side bleed assembly defining an inlet in fluid communication with a working gas flowpath through a compressor section, at a compressor discharge cavity, or both, the hot side bleed assembly in thermal communication with the CCA heat exchanger to cool an airflow through the hot side bleed assembly, the hot side bleed assembly further in thermal communication with a hot component of the turbomachine to cool the hot component of the turbomachine.

The gradually-expanded printed circuit board type heat exchange inner core comprises a cover plate, a bottom plate, a cold side plate layer and a hot side plate layer, a cold side gradually-expanded channel is of a flow channel structure with the width gradually expanded, and the sectional area of a flow channel dynamically adapts to gas-liquid phase change and volume change. And pressure drop fluctuation and bubble aggregation caused by gas phase expansion are reduced, the shunt channels and the divergent channels are arranged in parallel, an inner wall porous structure is combined, medium distribution uniformity is optimized through graded distribution and surface wettability enhancement, and the flow stability is remarkably improved. The turbulent flow ribs are arranged in the heat exchange channel on the heat side, combination of heterogeneous working media such as supercritical CO2-water and liquid hydrogen-liquid oxygen is supported by destroying a heat boundary layer, inducing turbulent flow and strengthening convective heat exchange and phase change heat transfer, the heat exchanger can improve the heat exchange efficiency while reducing pressure drop, compactness, reliability and wide working condition adaptability are considered, and the heat exchange efficiency is improved. Two-phase flow optimization and efficient heat exchange are achieved, and the extreme heat exchange requirements in the fields of aerospace, new energy and the like are met.

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 invention discloses a two-section compression type transcritical carbon dioxide heat pump system and a control method thereof. An outlet of a second compressor sequentially passes through a high-temperature heat exchanger and a flow divider and then is divided into two paths; wherein one path is communicated with an inlet of a first expansion machine through a heat flow stream inlet valve of the first heat regenerator, the hot side of the first heat regenerator and the hot side of the second heat regenerator, and the other path is communicated with an inlet of a second expansion machine through a heat flow stream inlet valve of the third heat regenerator and the hot side of the third heat regenerator in sequence; the outlet of the second expansion machine is communicated with the inlet of the mixer through the cold side of the second heat regenerator, the cold stream inlet valve of the first heat regenerator and the cold side of the second heat regenerator in sequence; an outlet of the first expansion machine communicates with an inlet of the mixer through the low-temperature heat exchanger, a cold stream inlet valve of the third heat regenerator, the cold side of the third heat regenerator and the first compressor, an outlet of the mixer communicates with an inlet of the second compressor, and the comprehensive energy efficiency of the carbon dioxide heat pump system can be improved.

The utility model relates to the technical field of metallurgical equipment, and discloses an environment-friendly kiln for lithium ore smelting, which comprises a kiln and a waste gas treatment mechanism, the side wall of the kiln is provided with a waste gas outlet, the inside of the kiln is provided with a feed port, and one side of the waste gas outlet far away from the kiln is provided with a heat exchange mechanism. A waste gas pipeline and a smoke outlet are arranged on the two sides of the waste gas treatment mechanism respectively, the heat exchange mechanism comprises a heat exchange cavity, a cold side outlet and a cold side inlet are formed in the two sides of the heat exchange cavity respectively, and a plurality of spoilers are installed in the side, close to the heat exchange mechanism, of the waste gas outlet. In the utility model, the spoiler is arranged in front of the heat exchanger to prolong the retention time of waste gas and improve the heat exchange efficiency. Meanwhile, an alkaline solution is sprayed to neutralize acidic components, generated solid byproducts such as sodium sulfate and calcium sulfate can be recycled for building materials or chemical engineering after being separated from liquid, and the production cost is reduced.

The present application relates to a kind of heat pump rectification systems based on heat shock flash circulation lift heat exchange, including rectifying tower, lift membrane reboiler, first throttling valve and heat shock heater, the secondary steam outlet of rectifying tower is connected with the heating steam import of lift membrane reboiler, the discharge port of the bottom of rectifying tower is connected with the cold side flow channel import of heat shock heater, and the cold side flow channel export of heat shock heater is connected with the feed inlet of lift membrane reboiler by first throttling valve;The vapor-liquid mixture outlet of lift membrane reboiler is connected with the column still liquid reflux port of rectifying tower, and the steam condensate outlet of lift membrane reboiler is connected with condensate tank, and the liquid outlet of condensate tank is connected with the condensate reflux port of rectifying tower side wall.The present application is combined by heat shock pressurization energy storage and throttling flash kinetic energy release, provides independent and stable lift membrane kinetic energy for lift membrane heat exchange, so that the flow pattern in the tube of lift membrane reboiler directly enters the efficient annular flow stage, improves the industrial applicability of lift membrane heat exchange technology in heat pump rectification system.

The invention relates to a semiconductor refrigeration module with a cold storage function and a control method. The technical problem that when an existing vehicle-mounted refrigerator operates independently, a compressor of a whole vehicle needs to be kept running at a low rotating speed for a long time is solved. Comprising a semiconductor chilling plate, a cold end heat exchange assembly is arranged on one side of the cold face of the semiconductor chilling plate, a plate heat exchanger is arranged on one side of the hot face of the semiconductor chilling plate, a cold storage heat exchanger and a phase change material packaging box are arranged on one side of the plate heat exchanger, and the phase change material packaging box is filled with a low-temperature phase change material. The plate heat exchanger and / or the phase change material packaging box are / is connected with a refrigerant circulation mechanism connected with a whole vehicle compressor refrigerating system. The refrigeration system has the advantages that when the whole vehicle compressor refrigeration system works, the low-temperature phase-change material is used for quickly storing cold energy, and the low-temperature phase-change material can be used for dissipating heat for the hot surface of the semiconductor refrigeration sheet after the whole vehicle compressor refrigeration system stops working, so that long-time low-speed operation of the whole vehicle compressor is avoided, and the service life of the whole vehicle compressor can be effectively prolonged.

The invention discloses a fuel cell stack temperature control system, and belongs to the technical field of fuel cells, the fuel cell stack temperature control system comprises an air processing assembly, a cooling circulation assembly and a flow adjusting device, the air processing assembly comprises an air compressor and an intercooler which are connected in sequence; external air is compressed by the air compressor, flows through the hot side of the intercooler, is conveyed to the cathode inlet and flows out from the cathode outlet; the cooling circulation assembly comprises a main loop arranged between the cooling liquid inlet and the cooling liquid outlet and a branch loop communicated with the main loop, a main water pump and a temperature control valve are arranged on the main loop, and cooling liquid is shunted from the main loop to the branch loop and flows back to the main loop through the cold side of the intercooler; the flow adjusting device is arranged on the main loop and / or the branch loop and used for adjusting the flow of cooling liquid flowing through the cold side of the intercooler. By integrating a collaborative operation mechanism of the air treatment assembly and the cooling circulation assembly and cooperating with the flow regulation device, high-precision dynamic regulation and control of the working temperature of the fuel cell stack are realized.

A cooling flow arrangement for a ceramic matrix composite (CMC) component of a turbine engine, wherein the CMC component includes a hot side configured for exposure to a hot gas path of the turbine engine and an opposing cold side. At least one cavity is provided in the CMC component, the at least one cavity having an entrance disposed on the cold side that is configured for receiving a cooling flow. A seal is disposed adjacent the at least one cavity and the cold side of the CMC component and is configured to provide a seal between the CMC component and an upstream turbine component. At least one hole extends through the seal and is positioned to provide the cooling flow to the at least one cavity of the CMC component.

The utility model discloses a compression condensing unit with waste heat recovery precooling, which comprises a compression type refrigerating system, an absorption type refrigerating system and a secondary refrigerant circulating system, and the absorption type refrigerating system comprises a waste heat generator, a second condenser, a second throttle valve, a second evaporator, an absorber and a solution pump. The secondary refrigerant circulating system comprises a secondary refrigerant loop and a heat exchanger, the hot side of the second evaporator and the cold side of the heat exchanger are connected in the secondary refrigerant loop, and the hot side of the heat exchanger is connected between the compressor and the first condenser; the second evaporator transmits cold energy into the compression type refrigerant system through a secondary refrigerant in the secondary refrigerant loop and the heat exchanger, and refrigerant steam before entering the first condenser is pre-cooled. Waste heat generated in industrial production is used for driving the absorption type refrigeration system, the condenser of the compression type refrigeration system is pre-cooled through cold energy provided by absorption type refrigeration, and the energy utilization rate is effectively increased.

The invention discloses a vibration plate type anti-scaling MVR evaporator, and relates to the technical field of MVR evaporators. Comprising a compressor, a heater, a separator, a circulating pump and a heat exchanger which are connected with one another, the side end face of the heat exchanger fixedly communicates with a cold side inlet pipe and a hot side inlet pipe, the cold side inlet pipe is located on one side of the hot side inlet pipe, and an L-shaped fixed plate is fixedly installed on the side end face of the heat exchanger and located on the outer side of the cold side inlet pipe; an intercepting assembly is arranged on the L-shaped fixed plate; a mounting fixed plate and a stabilizing transverse plate are fixedly mounted on the heat exchanger, an auxiliary assembly is arranged on the mounting fixed plate and the stabilizing transverse plate, and a vibration transmission plate is arranged on the auxiliary assembly. Through cooperative use of the interception assembly and the auxiliary assembly, the anti-scaling capacity of the MVR evaporator is effectively improved, the heat exchange efficiency is improved, the service life of equipment is prolonged, energy consumption is reduced, and the use effect of the MVR evaporator is greatly improved.

The invention belongs to the technical field of chemical engineering, and relates to a method and a device for utilizing latent heat of a tower top gas phase in cyclohexanol preparation. Comprising a first separation tower, a second separation tower and the like, a tower top gas phase outlet of the second separation tower is connected with a hot side inlet of a second tower condenser, and a cold side outlet of the second tower condenser is connected with the first separation tower; a tower top gas phase outlet of the cyclohexene recovery tower is connected with the first separation tower; a tower top gas phase outlet of the cyclohexanol refining tower is connected with a hot side inlet of a refining tower condenser, and a cold side outlet of the refining tower condenser is connected with the second separation tower through a pipeline; an outlet of the hydration reaction system is connected with the first separation tower, and a tower kettle liquid phase outlet of the first separation tower is connected with an inlet of the second separation tower through a pipeline; a side line outlet of the first separation tower is connected with the hydration reaction system. The tower top gas phase latent heat of the second separation tower, the cyclohexene recovery tower and the cyclohexanol refining tower is recycled, so that the energy consumption in the cyclohexanol production process is reduced.

The utility model provides a multi-layer cold trap device. The multi-layer cold trap device comprises a first shell, a second shell, a third shell, an air inlet pipe and an air outlet pipe, wherein the second shell is arranged in the first shell, and a medium space is formed between the first shell and the second shell. A medium cavity is formed in the third shell, the third shell is arranged in the second shell, and a flowing space is formed between the second shell and the third shell. The air inlet pipe and the air outlet pipe are respectively communicated with the flowing space, so that extracted air can sequentially flow along the air inlet pipe, the flowing space and the air outlet pipe. Low-temperature media are placed in the medium space and the medium cavity at the same time, cold faces are formed on the inner wall of the second shell and the outer wall of the third shell, namely, double cold faces are formed in the flowing space, the area of the cold faces in the flowing space is enlarged, and the contact area of the cold faces and gas flowing through the flowing space is enlarged. Furthermore, gas molecules flowing through the flowing space are captured, the adsorption capacity of the cold trap is improved, and the vacuumizing efficiency is improved.

An intelligent heat pump system autonomously manages thermal regulation in heating and cooling modes using real-time sensor data and adaptive control algorithms. The system comprises a heat pump integrated with components including a supply valve, regulating valve, return valve, and compressor expander, along with multiple sensors configured to monitor temperature and pressure conditions at various points, including the reservoir, cold side, and hot side. A removable memory stores a directive file containing operational parameters, including target temperatures, valve timing, and pressure control data. A control unit with a processor executes firmware modules that include sensor calibration routines, motor and valve control logic, and an adaptive algorithm that continuously compares real-time sensor input against target parameters. Based on deviations, the system dynamically adjusts component operations to regulate refrigerant flow, internal energy, temperature, and pressure, thereby driving the system toward a steady-state thermal condition. This autonomous system ensures efficient performance, enhanced temperature stability, and optimal energy usage across a range of varying environmental conditions.

A downhole tool, a well system, and a method are provided. The downhole tool, in one aspect, includes a downhole feature, as well as expandable metal positioned proximate the downhole feature, the expandable metal configured to expand in response to hydrolysis. The downhole tool, in accordance with this one aspect, may further include a first electrode coupled between the expandable metal and a first terminal of a thermoelectric generator, the first electrode configured to provide a voltage to the expandable metal to increase or decrease a rate of reaction of the hydrolysis, and a second electrode coupled between the downhole feature and a second terminal of the thermoelectric generator, wherein the thermoelectric generator includes a hot side thermal conductor and a cold side thermal conductor separated by a thermoelectric module, the thermoelectric module including a plurality of n-type semiconductors and p-type semiconductors connected with each other.

The utility model discloses a heat dissipation device which aims to solve the technical problem that a heat dissipation device in the prior art is prone to generating condensate water. The heat dissipation device comprises a refrigeration chip, a heat conduction block, a radiator and a control panel. The cold face of the refrigeration chip is connected with the first end face of the heat conduction block, and the hot face is connected with the first end face of the radiator. The second end face of the heat conduction block makes contact with a heat source and is provided with a first temperature sensor. A second temperature sensor is arranged at the air inlet; the control panel receives a first temperature value, collected by the first temperature sensor, of the heat conduction block, collects a second temperature value, collected by the second temperature sensor, of the air inlet environment, and controls the refrigeration chip to be powered on, adjust the power-on current intensity or be powered off according to the first temperature value and the second temperature value. The control panel receives feedback of the two temperature sensors, it is guaranteed that the difference value between the first temperature value of the heat conduction block and the second temperature value of the air inlet environment does not exceed the preset difference value, and therefore condensate water can be prevented from being generated.

The invention relates to a combined cooling and heating collaborative optimization method for a central air conditioner, which comprises the following steps of: when cold and heat load fluctuation is detected, according to the response speed difference of a cooling and heating system, asymmetrically controlling the time sequence and pre-starting or hot standby of equipment, so that the time sequence of a cold and heat source is coordinated; potential physical interference nodes or cross paths are identified in the operation process of the cooling and heating system, a hydraulic or energy transmission path is temporarily passivated, and the reverse coupling influence between the cooling and heating system is reduced in combination with hot side delayed water feeding and cold side path adjustment; according to the method, the asymmetric control time sequence and the cold and hot response priority queue are introduced, the control windows can be dynamically distributed according to the cold and hot source response speed difference, the system control conflict problem caused by simultaneous adjustment of the cold and hot sources is avoided, the cold and hot system rush adjustment phenomenon is effectively relieved, and response adjustment is more orderly. By means of the pre-starting device and the hot standby mechanism, the device can be awakened in advance or maintained in the heat balance pre-starting state before load fluctuation.

A brush seal for use with a ceramic matrix composite (CMC) component of a gas turbine engine may feed a cooling flow to the CMC component, which has a hot side configured for exposure to a hot gas path of the gas turbine engine and an opposing cold side having a cavity for feeding a cooling flow to at least one film cooling hole of the CMC component. The brush seal includes: an outer diameter (OD) backing plate; an inner diameter (ID) backing plate; a plurality of brush seal bristles sandwiched between the OD backing plate and the ID backing plate; at least one hole forming a passage extending through the OD backing plate, the brush seal bristles, and the ID backing plate; and a cover plate attached to an inner surface of the ID backing plate and configured to extend into the cavity of the CMC component.

An information handling system includes a hardware processor, a memory device, and a PMU to provide power to the hardware processor and memory device. A TEC chip refrigeration liquid cooling system to cool a heat-generating component device includes a cold plate thermally coupled to the heat-generating component device to transfer heat from the heat-generating component device into a cold side tank thermally coupled between the cold tank and a hot side tank, a TEC chip to, when a voltage is applied to the TEC chip increase a rate of thermal transfer of heat from the cold side tank of a first liquid cooling loop to the hot side tank of a second liquid cooling loop, and a radiator thermally coupled to the hot side tank in the second liquid cooling loop to dissipate heat transferred to the radiator out of the information handling system.

A flue gas low-temperature purification system. The flue gas low-temperature purification system comprises: a spray column (1), an adsorption column (2), a regeneration column (3), a heat exchanger (4) and an absorption refrigerator (5), wherein the spray column (1) is used for cooling flue gas to low-temperature flue gas at subzero temperature; the adsorption column (2) is used for adsorbing the low-temperature flue gas and purifying same into clean flue gas; the regeneration column (3) is used for heating an adsorbent in the regeneration column (3) for regeneration; the regeneration column (3) is connected to the adsorption column (2), so that the adsorbent circulates between the adsorption column (2) and the regeneration column (3); a heat exchange medium introduced from a cold side inlet (43) in the heat exchanger (4) exchanges heat with the flue gas discharged from a boiler flue and then is supplied into the regeneration column (3); a generator inlet (51) of the absorption refrigerator (5) is connected to a hot side outlet (42); an evaporator inlet (53) of the absorption refrigerator (5) is connected to a spray liquid outlet of the spray column (1); and an evaporator outlet (54) of the absorption refrigerator (5) is connected to a spray liquid inlet of the spray column (1) for cooling spray liquid.

The invention discloses a heat energy power generation system based on efficient Rankine cycle and a control method. An outlet of a working medium pump included in the heat energy power generation system is connected with a heat regenerator cold side inlet through a heat regenerator cold side bypass valve. The heat regenerator cold side bypass valve is connected with a working medium inlet of the cooling liquid heat exchanger; a working medium outlet of the cooling liquid heat exchanger is respectively connected with inlets of the turbine bypass valve and the turbine inlet valve; an outlet of the turbine inlet valve is connected with a working medium inlet of the turbine power generation all-in-one machine; a working medium outlet of the turbine power generation all-in-one machine is connected with a hot side inlet of the heat regenerator through a turbine outlet valve; a hot side outlet of the heat regenerator is connected with a working medium inlet of the condenser; a condenser working medium outlet is connected with a liquid storage tank inlet; the liquid storage tank is connected with the working medium pump; the outlet of the cooling channel is connected with the working medium inlet of the condenser; and the outlet of the cooling channel is connected with the working medium inlet of the turbine power generation all-in-one machine. The low-boiling-point organic working medium is adopted to absorb cooling liquid heat of external devices (such as brake pads), and consumption reduction and efficiency improvement are achieved.

The invention discloses a double-storage combined cooling and heating system, which relates to the technical field of combined cooling and heating, and comprises a variable frequency heat pump, a cold storage device, a heat storage device, a cooling capacity management unit, a heat management unit and a central controller, the variable frequency heat pump is suitable for various energy sources and provided with a cold side heat exchange channel and a hot side heat exchange channel which are independently arranged and connected to the cold storage device and the heat storage device respectively. The cold storage device communicates with the cold quantity management unit and the heat quantity management unit through circulating pipelines; the central controller is electrically connected with the variable-frequency heat pump, the cooling capacity management unit and the heat management unit, and energy storage priority control logic is arranged in the central controller and used for controlling start, stop and operation modes of the variable-frequency heat pump according to the temperature states of the cold storage device and the heat storage device; according to the system, cold and heat independent and combined energy supply can be achieved, the energy efficiency is improved, the operation cost is reduced, and the energy saving performance and intelligent control are improved; the technical problems that an existing heat pump system is difficult to flexibly achieve cold and heat combined supply, energy is wasted, and the overall energy efficiency is low are solved.

The invention relates to an aircraft air source precooler system and an aircraft. The aircraft air source precooler system comprises a precooler, an upper cold side pipeline, a lower cold side pipeline, a fan air valve, a fan air inlet device and a bottom firewall. Wherein the precooler is installed in a hanging structure of an airplane, the fan air inlet device is connected to an engine nacelle outer duct, the bottom firewall is installed at the bottom of the hanging structure, and the fan air inlet device, the fan air valve, the lower cold side pipeline, the upper cold side pipeline and the precooler are sequentially connected. Therefore, cold air from the outer duct of the engine nacelle enters the precooler through the fan air inlet device, the fan air valve, the lower cold side pipeline and the upper cold side pipeline. Wherein the precooler and the upper cold side pipeline are located in the bottom firewall, and the lower cold side pipeline, the fan air valve and the fan air inlet device are located outside the bottom firewall.

The invention belongs to the technical field of scrubbing oil debenzolization regeneration in the coking industry, and particularly relates to a micro-positive pressure debenzolization device and method for an independent regenerator. Comprising a rich oil tank, the rich oil tank is sequentially connected with a lean and rich oil heat exchanger, a washing oil heater and a debenzolization tower through pipelines, and the reflux input end, the naphthalene oil output end, the gas phase output end and the steam input end of the debenzolization tower are respectively connected with a benzene-water separation tank, a tar asphalt tank, a condenser and a washing oil regenerator through pipelines. A steam input end and a slag discharge end of the wash oil regenerator are respectively provided with a jet ejector and a continuous jet negative pressure slag discharge device, a lean oil output end pipeline of the debenzolization tower is connected with a cold side input end of the lean and rich oil heat exchanger in parallel, and the jet ejector and the continuous jet negative pressure slag discharge device are connected with a tar asphalt tank through pipelines. According to the invention, the purpose of zero emission of VOCs is achieved by eliminating the generation of VOCs in the washing oil debenzolization process, so that the environmental pollution is reduced.

The invention relates to the technical field of heat exchangers, and discloses an additive-manufactured checkerboard micro-channel heat exchange core body and a split-flow type lead-out structure thereof, the additive-manufactured checkerboard micro-channel heat exchange core body comprises a heat exchange core body, and a plurality of cold side flow channels and hot side flow channels which are arranged in a checkerboard staggered mode are arranged in the heat exchange core body; the leading-out section comprises a cold side fluid inlet and outlet structure and a hot side fluid inlet and outlet structure; the at least one transition section is connected to one end or two ends of the heat exchange core body; the cold side connecting pipe comprises a cold side inlet connecting pipe and a cold side outlet connecting pipe; and the hot side connecting pipe comprises a hot side inlet connecting pipe, a hot side inlet connecting pipe and a hot side outlet connecting pipe. Through the checkerboard micro-channel core body and the integrated shunting type lead-out structure, the heat transfer efficiency and the heat exchange area utilization rate are remarkably improved, meanwhile, the compact structure, uniform fluid distribution and low flow resistance are achieved, and the defects of a traditional printed circuit board heat exchanger and a complex topology additive heat exchanger in the aspects of performance, size and integration are effectively overcome.

The invention relates to an efficient ice making device based on a semiconductor refrigeration scheme and suitable for a vehicle-mounted refrigerator. The technical problem that an existing vehicle-mounted refrigerator is low in refrigerating efficiency is solved. Comprising a refrigerator partition plate arranged on one side of a vehicle-mounted refrigerator, a semiconductor TEC is arranged on the side, away from the vehicle-mounted refrigerator, of the refrigerator partition plate, a liquid cooling plate evaporator is arranged on the side, away from the refrigerator partition plate, of the semiconductor TEC, and a refrigerant flow guide assembly connected with a whole vehicle air conditioner compressor system is connected into the liquid cooling plate evaporator. A cold conduction block is arranged on the side, close to and away from the refrigerator partition plate, of the semiconductor TEC and connected with an ice making box assembly on the side, located in the vehicle-mounted refrigerator, of the refrigerator partition plate. The invention has the advantages that the dual refrigeration design of the whole vehicle air conditioner compressor system and the semiconductor TEC can realize the deep refrigeration capability, the cold surface temperature of the semiconductor TEC can be controlled at-40 DEG C, and the ice-making capability of the semiconductor TEC is ensured; the heat transfer area can be increased through the freezing sword in various forms, and the ice making efficiency is improved.

The system comprises a power generation system and a heat supply system, the power generation system comprises a boiler, a carbon dioxide turbine, a heat regenerator, a precooler, a compressor and a motor generator, an outlet of the boiler is connected with an inlet of the turbine, an outlet of the turbine is connected with a hot side inlet of the heat regenerator, and an outlet of the compressor is connected with a hot side inlet of the precooler. An outlet of the precooler is connected with an inlet of the compressor, an outlet of the compressor is connected with a cold-side inlet of the heat regenerator, a cold-side outlet of the heat regenerator is connected with an inlet of the boiler, and the compressor and the turbine are respectively connected with the motor generator. The heat supply requirement can be met, complete thermoelectric decoupling is achieved, and the flexibility of the supercritical carbon dioxide cycle generator set is fully exerted while stable heat supply is achieved.

The connecting assembly comprises a cold conduction structure and a pressing piece, the cold conduction structure comprises a first connecting piece and a second connecting piece which are sequentially connected in the length direction of the cold conduction structure, and the end, away from the second connecting piece, of the first connecting piece is used for being attached and fixed to the cold conduction face of the cold head; the second connecting piece is provided with a mounting hole used for fixedly mounting the heat sink, the pressing piece is arranged on the peripheral side of the second connecting piece in a sleeving mode, and the pressing piece shrinks inwards in the radial direction of the pressing piece along with temperature reduction and is pressed on the outer wall face of the second connecting piece, so that the inner wall face of the second connecting piece and the outer wall face of the heat sink are tightly pressed and attached. By means of the connecting assembly, the disassembly process of the refrigerating machine is greatly simplified, sealing failure and part damage caused by repeated disassembly and assembly can be avoided, and the risk that superconducting magnet equipment breaks down is reduced.

The invention relates to a method for producing methylamine by a generally exothermic gas-phase reaction of methanol and ammonia as reactants in the presence of a heterogeneous catalyst at a pressure in the range of 15 to 35 bar. The reactants are evaporated in one or more heat exchangers and superheated prior to being fed to the reactor, wherein the heat exchangers in turn are heated with a stream of hotter product gas from the reactor. In addition to methylamine (monomethylamine, dimethylamine, and trimethylamine), the product gas stream contains unconverted reactants, water, and any other reaction by-products. To control the reactor inlet temperature and limit it to a temperature in the range of 350 DEG C to 410 DEG C, a suitable quenching liquid is introduced into the hot product gas stream prior to feeding the hot product gas stream to a heat exchanger for heating the reactants. Evaporation and overheating of the added quenching liquid removes the corresponding amount of energy extracted from the hot product gas stream, with the result of efficient and rapid cooling of the hot product gas stream. As a result, the temperature difference between the cold side and the hot side of the heat exchanger is small, which means less energy is transferred to the reactant stream, and thus its reactor inlet temperature can be adjusted or limited.

The invention relates to the technical field of power distribution boxes, and particularly discloses a power distribution box dehumidification mechanism, a control method and a power distribution box. The power distribution box dehumidification mechanism comprises an upper shell, a lower shell and a dehumidification assembly; a first partition plate dividing the cavity into a cold cavity and a hot cavity is arranged in the lower shell. The top of the cold cavity communicates with the main air duct, and a self-temperature-limiting heating piece is arranged at the joint of the top of the cold cavity and the main air duct. The two ends of the first partition plate extend to the positions close to the inner walls of the cavities to form a side air channel communicating the cold cavity with the hot cavity. The dehumidification assembly comprises a refrigeration piece arranged on the first partition plate, a condensation fin connected with the cold face of the refrigeration piece and a heat dissipation fin connected with the hot face of the refrigeration piece. Wherein a water collecting tank used for collecting condensate water is arranged at the bottom of the cold cavity, each condensation fin comprises a grid air channel defined by a first fin and a second fin, the two ends of each grid air channel extend towards the self-temperature-limiting heating part and the water collecting tank correspondingly, the dehumidification mechanism is suitable for the high-temperature and high-humidity environment and the low-temperature and high-humidity environment, and meanwhile the dehumidification efficiency is higher.