440 results about "Cold side" patented technology

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 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.

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 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 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.

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.

A gas supply and carbon capture system, comprising an LNG tank, a BOG compressor set, a dual-fuel engine, a CO2 capture unit, a CO2 compressor, a heat exchanger, and a CO2 storage tank, wherein the LNG tank is used for storing liquid LNG, BOG formed at the inner top of the LNG tank is fed to a cold side of the heat exchanger; the heat exchanger is used for heat exchange between pressurized CO2 and the BOG, cold energy of the BOG is utilized to liquefy the CO2, the obtained liquid CO2 is stored in the CO2 storage tank, and the BOG having a higher temperature after the heat exchange is sent to the BOG compressor set; and the BOG compressor set is used for pressurizing the BOG having a higher temperature and then delivering the BOG to the dual-fuel engine for combustion, and the BOG compressor set employs normal-temperature compressors. By means of the system, the cold energy of the BOG from the LNG tank is fully utilized, and the temperatures of the BOG entering the BOG compressors are caused to meet an inlet temperature requirement of the normal-temperature compressors.

The invention discloses a pulse tube refrigeration device based on a semiconductor refrigeration ring. The device comprises a compressor, a precooler, a heat regenerator, a cold-end heat exchanger, a pulse tube, a hot-end heat exchanger, a reducing cavity, an adjusting tube and an air reservoir which are communicated in sequence. The semiconductor refrigeration sleeve is arranged outside the heat regenerator, and the surfaces of the semiconductor refrigeration sleeve and the heat regenerator are tightly attached. The semiconductor refrigeration sleeve is formed by overlapping a plurality of annular semiconductor refrigeration sheets, the hot surface of each semiconductor refrigeration sheet faces upwards, the cold surface of each semiconductor refrigeration sheet faces downwards, and the cold and hot surfaces of every two adjacent semiconductor refrigeration sheets are connected through heat-conducting silicone grease. Temperature sensors are arranged at the top and the bottom of the semiconductor refrigeration sleeve to monitor the temperature difference in real time, and the control system adjusts the input current of the semiconductor refrigeration piece and adjusts the refrigeration power of the semiconductor refrigeration piece. Through the stacked structure of the semiconductor refrigeration rings, step-by-step reduction of the temperature is achieved, the cooling efficiency is remarkably improved, and accurate temperature control can be conducted. The device is compact in structure, high in reliability and suitable for the working environment with the high requirement for equipment stability.

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.

The utility model discloses a finned tube type heat exchanger for a hot galvanizing line, which comprises a shell, a smoke inlet and a smoke outlet are respectively arranged at two ends of the shell, and a plurality of air ducts arranged side by side are arranged between the smoke inlet and the smoke outlet. A plurality of fin heat exchange tube sets are arranged in the air flue at intervals in the smoke flowing direction, each fin heat exchange tube set is provided with a cold side inlet and a cold side outlet, all heat exchange tubes of the fin heat exchange tube sets are fixed to an upper tube plate and a lower tube plate, the heat exchange tubes are connected through U-shaped elbows, and the fin heat exchange tube sets share the upper tube plate and the lower tube plate. A plurality of fin heat exchange tube groups are inserted into the air duct from top to bottom; the upper tube plate is connected with an equipment flange on the shell through a gasket and a fastener; an expansion joint and an electric air valve are sequentially arranged at the air duct inlet in the smoke flowing direction, and the opening degree of the electric air valve is determined according to the smoke outlet temperature. The heat exchanger is convenient for ash removal, overhaul and maintenance, and solves the problem that the performance of the heat exchanger is reduced due to smoke side dust blockage.

The application relates to a hydrogen production system. The hydrogen production system comprises an electrolysis cell module and a steam heat pump module. The steam heat pump module comprises a heat pump assembly, a water storage tank and a flash tank. The heat pump assembly comprises a condenser. An outlet of the water storage tank is connected to a cold side inlet of the condenser. A cold side outlet of the condenser is connected to an inlet of the flash tank. An outlet of the flash tank is connected to an inlet of a fuel gas preheater. The steam heat pump module of the application only needs a small amount of electric energy to generate a large amount of water vapor. In the case of the same water vapor yield, the power consumption of the steam heat pump module is only about half of the power consumption of the water vapor generator, achieving a more energy-saving effect. In the case of the same power, the water vapor yield of the steam heat pump module is much larger than the water vapor yield of the steam generator, so that the hydrogen production system of the application can meet the demand of a high-power hydrogen production system.

The invention discloses a waste lye desulfurization tail gas treatment system and method.The waste lye desulfurization tail gas treatment system comprises a desulfurization unit, a tail gas pretreatment unit and a tail gas co-treatment unit; the input end of the desulfurization unit is connected with a waste alkali liquid discharging device, the liquid output end of the desulfurization unit is connected with a waste alkali liquid resource utilization device, and the tail gas co-processing unit comprises a first heat exchanger, a flame arrester, a combined heat and power generation boiler and a flue gas treatment device; the cold side input end of the first heat exchanger is connected with the output end of the tail gas pretreatment unit, the hot side input end of the first heat exchanger is connected with the first output end of the combined heat and power generation boiler, and the cold side output end of the first heat exchanger is connected with the input end of the flame arrester. And finally, up-to-standard emission is realized, the treatment energy consumption is effectively reduced, meanwhile, the construction, operation and maintenance cost of a tail gas incinerator is saved, and the requirements of energy conservation and emission reduction are met.

The present disclosure provides a heat pump system and a heavy oil thermal recovery system. The heat pump system comprises: a working medium side, a heat exchange working medium cycle is formed in the working medium side, the working medium side comprises a compressor and a turbine arranged in sequence according to the flow of the heat exchange working medium, the compressor is suitable for compressing the heat exchange working medium, the turbine is suitable for recovering the pressure energy of the heat exchange working medium, and the turbine and the compressor are coaxially connected, the torque generated by the rotation of the turbine is transmitted to the compressor, so that the compressor compresses the heat exchange working medium; a steam side, a water-steam cycle is formed in the steam side, the steam side comprises a first heat exchanger suitable for heat exchange between water and first waste heat generated by an external industrial scene to preheat water in the steam side; and a heat exchanger, the preheated water in the steam side is in communication with the cold side of the heat exchanger, the heat exchange working medium compressed by the compressor in the working medium side is in communication with the hot side of the heat exchanger, and the heat exchanger is suitable for containing water and heat exchange working medium to heat the water in the cold side and generate steam.

The invention provides a cascade heat pump and an adjusting method, and relates to the technical field of heat pumps. The cascade heat pump comprises a first-stage heat pump circulation system, a second-stage heat pump circulation system and a tail end pipeline, the first-stage heat pump circulation system comprises a first compressor, a hot side channel of a gas cooler, a hot side channel of a cascade heat exchanger, a first expansion valve and an evaporator which are sequentially connected to form a first refrigerant circulation; the second-stage heat pump circulation system comprises a second compressor, a condenser, a second expansion valve and a cold side channel of the cascade heat exchanger which are sequentially connected to form a second refrigerant circulation; the tail end pipeline is sequentially communicated with a cold side channel of the gas cooler and a cold side channel of the condenser in the conveying direction. According to the cascade type heat pump, due to the flow direction arrangement of the gas cooler and the tail end pipeline, the effective energy of the hot side channel and the cold side channel in the condenser in the heat exchange process can be effectively improved, the heating load of the condenser is effectively reduced, and therefore the overall performance coefficient of the cascade type heat pump is improved.

The invention relates to a thermoelectric heat pump including a heat exchanger block with a first channel for flow therethrough of a first heat transfer fluid such as a liquid medium and a separate second channel for flow therethrough of a second heat transfer fluid such as a liquid medium. The heat exchanger block includes a heat exchange cavity which is hydraulically separated by a partition into a first and a second sub-cavity which are connected to respectively the first and second channel and wherein the first heat transfer fluid in the first sub-cavity is in heat-exchanging contact with a first side of the partition and the second heat transfer fluid in the second sub-cavity is in heat-exchanging contact with a second side of the partition lying opposite the first side. The partition includes a thermoelectric element with a cold side and a hot side lying opposite thereto and at a distance therefrom. An outer peripheral edge extends between the cold and hot side, which thermoelectric element is configured to transport heat from the cold side to the hot side and wherein the cold side is in heat-exchanging contact with the first heat transfer fluid and wherein the hot side is in heat-exchanging contact with the second heat transfer fluid and wherein each channel is provided with a pump for pumping the respective heat transfer fluid through the channel.

The application provides a heat dissipation system of an electronic device, and relates to the technical field of electronic device heat dissipation. The heat dissipation system of the electronic device comprises: a first heat dissipation piece; a semiconductor refrigerator, the semiconductor refrigerator has a cold surface and a hot surface, the cold surface is used for contacting the electronic device, and the first heat dissipation piece is used for dissipating heat of the hot surface; and the semiconductor refrigerator is configured to absorb heat on the side of the cold surface and transfer the heat to the hot surface. The heat dissipation system of the electronic device provided by the application solves the problem of poor heat dissipation effect of a CPU in the prior art.

The present invention provides a beauty instrument, comprising: a housing with vents therethrough as an air inlet or air outlet; a control circuit board in the housing; a light source assembly in the housing and electrically connected with the control circuit board; and a thermoelectric cooling assembly. The thermoelectric cooling assembly comprises: a thermoelectric cooler, a heat sink, a fan, and a heat transfer assembly. The heat transfer assembly comprises a VC or an ALVC or an Aluminum Heat Pipe. The heat transfer assembly is thermally connected between the heat sink and the hot side of thermoelectric cooler. A front end of the beauty instrument has a light outlet surface; the cold side is connected to and cool the light outlet surface, or the cold side serves as the light outlet surface, thereby, the light outlet surface is able to cool skin in contact.

The utility model discloses an energy-saving system for ethanol rectification. The energy-saving system comprises a rectifying tower, a first-stage feed preheater, a second-stage feed preheater, a third-stage feed preheater, a tower top condenser, a heat pump compressor, a condensation reboiler and a reflux tank, the first-stage, second-stage and third-stage feed preheaters are sequentially connected with the rectifying tower; a tower top gas phase outlet of the rectifying tower is respectively communicated with a hot side inlet of the tower top condenser and an inlet of the heat pump compressor, an outlet of the heat pump compressor is communicated with a hot side inlet of the condensation reboiler, and a hot side outlet of the condensation reboiler is communicated with a heat source inlet of the three-stage feeding preheater; a tower kettle liquid extraction port of the rectifying tower is respectively communicated with a cold side inlet of the condensation reboiler and a heat source inlet of the secondary feeding preheater; a tower kettle liquid backflow port of the rectifying tower is communicated with a cold side outlet of the condensation reboiler; a first inlet of the reflux tank is communicated with a hot side outlet of the tower top condenser, and a liquid phase outlet of the reflux tank is respectively communicated with a tower top reflux inlet of the rectifying tower and a heat source inlet of the primary feeding preheater. The device can reduce the consumption of tower top cooling circulating water and tower kettle steam in the rectification process, and is economical and energy-saving.

The invention discloses a continuous ortho-parahydrogen conversion experiment system. Hydrogen is discharged from a hydrogen source and is divided into cold side hydrogen and hot side hydrogen to be mixed through a three-way joint; one part of cold-side hydrogen is pre-cooled by a hydrogen pre-cooling device on a cold-side hydrogen pipeline and then reaches a primary-side inlet of the double-pipe heat exchanger, and the other part of the cold-side hydrogen enters the Venturi mixer through a cold-side branch; hot side hydrogen to be mixed enters the Venturi mixer through the hot side hydrogen pipeline and is mixed with the backflow gas and the cold side hydrogen entering the Venturi mixer to form hot side gas; hot side gas reaches a secondary side inlet of the double-pipe heat exchanger; wherein the temperature of the hot side gas flowing out of the venturi mixer and the proportion of parahydrogen in the hot side gas are adjusted by adjusting the proportion of the hot side gas to be mixed, the cold side hydrogen part entering the venturi mixer and the backflow gas. The continuous ortho-parahydrogen conversion temperature and parahydrogen proportion can be accurately adjusted.