428results about How to "Meet thermal requirements" patented technology

The invention discloses a hydrogen fuel cell automobile thermal management system. The hydrogen fuel cell automobile thermal management system comprises a first cooling loop (1) and a second cooling loop (2); the first cooling loop (1) cools a hydrogen fuel electric reactor (11); a first radiator (12), the hydrogen fuel electric reactor (11) and a circulating pump (13) are arranged on the first cooling loop (1); the first cooling loop (1) comprises a first branch (101) with a deionizater (14); the second cooling loop (2) cools a hydrogen fuel cell auxiliary system and an electric drive system;a second radiator (21), an electronic water pump (22), an air compressor driving motor (23), an air compressor controller (24), a DC / DC converter (25), a motor controller (26) and a vehicle driving motor (27) are arranged on the second cooling loop (2); and the first radiator (12) and the second radiator (21) are placed in the vehicle running direction in series. The hydrogen fuel cell automobilethermal management system has the characteristics of good heat radiation effect and controllable hydrogen fuel cell cooling liquid electrical conductivity.

The invention proposes a high power charging system for an electric car. The high power charging system comprises a power cell, a charge connecting device, an external power supply device, and an electric control device, wherein the power cell is arranged inside the electric car; the charge connecting device comprises a power supply plug and an automobile plug; the external power supply device is connected with the power supply plug of the charge connecting device; the charge control device is arranged inside the electric car, connected with the power cell and connected with a car plug of the charge connecting device; and a modulated pulse-width modulation (PWM) wave signal is transmitted by the charge connecting device between the charge control device and the external power supply device, so as to achieve communication of the charge control device and the external power supply device. By adopting the system, uniform switching of a working state of each system can be achieved; each split system of the car is harmonically controlled; and the high power charging system is strong in compatibility. Meanwhile, a control method of the high power charging system for the electric car is also provided by the invention.

The invention discloses a power battery composite heat management system and a method thereof. The power battery composite heat management system comprises a water tank filled with a circulating fluid, a circulating pump, a sealing cover plate of the water tank, and a battery pack array which is fixedly mounted above the sealing cover plate and is composed of a plurality of battery cells, wherein a temperature equalizing plate and a heat pipe are adhered onto the surface of each battery cell respectively, and cooing sections of the heat pipes pass through the sealing cover plate to be arranged in the circulating fluid in the water tank; a circulating fluid inlet is formed in one side end of the water tank, a circulating fluid outlet is formed in the other side end of the water tank, and a circulating fluid turbulent flow structure is arranged inside the water tank, so that the circulating fluid flows into the circulating fluid outlet from the circulating fluid inlet of the water tank in a curve flowing manner. The system and the method thereof can solve the technical problems such as heat dissipation, battery pack temperature difference reduction, battery preheating and heat cyclic utilization under different working conditions of batteries; and meanwhile, the system is compact and simple in structure and convenient in installation and maintenance, accords with the development tendency of battery heat management systems and electric automobiles, and has good application prospects.

The invention provides an air-conditioning condensate water utilization device for cooling of an electronic control system of an outdoor unit. The device comprises an electric control box, a condensate water compensation container, a cooling unit and a water evaporation unit. Air conditioning condensate water flows from a water outlet pipe of a water collecting disc on the lower portion of an evaporator to a condensate water compensation container and then flows into the cooling unit after buffering and compensation, heat in the electric control box is taken away by a heating element of the cooling unit, and the condensate water flows to the water evaporation unit finally to be evaporated on the surface of an evaporation core. According to the device, the cooling capacity of an air conditioning is used, so that energy is saved; the condensate water is evaporated instead of being discharged, so that adverse effects are eliminated; self-driving of condensate water supply is achieved through the suction action of a capillary core of the cooling unit and the evaporation action of the water evaporation unit; the device has the advantages of being good in cooling effect, long in service life, low in maintenance cost, capable of achieving energy saving and emission reduction of the air conditioning and the like.

The invention discloses a large-power LED lamp heat radiator with fins having functions of heat pipes, which comprises a metallic heat radiating body and at least one metallic heat radiating fin, wherein the metallic heat radiating body and the metallic heat radiating fin are both in a hollow structure; a first hollow cavity in the interior of the metallic heat radiating body is communicated with a second hollow cavity in the interior of the metallic heat radiating fin to form an intercommunicated closed type inner cavity body; a heat pipe fluid absorbing core is arranged on the inner wall of the closed type inner cavity body, and operating fluid is filled in the heat pipe fluid absorbing core; the heat radiating body and the metallic heat radiating fin correspondingly form an integrated heat pipe for heat exchange; the inner wall of the heat radiating body and the inner wall of the metallic heat radiating fin form a pipe shell of the integrated heat pipe; and the heat radiating body and the metallic heat radiating fin have functions of heat pipes. The invention has the advantages of simple and reasonable structure, small volume, convenient processing, manufacture, installation and arrangement, large heat radiating area, high heat conduction coefficient and good heat radiating performance, and can effectively solve the heat radiating problem of large-power LED lamps.

The invention relates to the technical field of the preparation of polypropylene, and in particular relates to an insulation heat conduction polypropylene composition for a light emitting diode (LED) lamp. The insulation heat conduction polypropylene composition consists of the following raw materials by weight percent: 20 to 60 percent of polypropylene resin, 20 to 60 percent of heat conducting agent, 5 to 30 percent of fire retardant, 1.2 to 10 percent of fire-resisting synergist, 0.3 to 2 percent of lubricant, 0.1 to 1 percent of sorbitol nucleating agent, 0.2 to 3 percent of silane coupling agent or titanate coupling agent, 0.1 to 0.5 percent of main antioxidant, 0.1 to 0.5 percent of auxiliary antioxidant and 0.1 to 0.5 percent of light stabilizer. The flame resistance of the polypropylene composition can reach V0, the heat conduction coefficient is about 0.7, the insulation performance and the heat conduction performance are good, the heat radiation requirement of the LED illumination lamp can be met, and the insulation heat conduction polypropylene composition is suitable for extruding and molding a light emitting diode (LED) heat radiating lamp holder and has the characteristics of easiness in machining, long efficiency, high heat conduction performance.

A heat radiation type flexible circuit board comprises: a basement membrane (10), a top conductive layer (20), a bottom conductive layer (30), a top electroplating metal layer (40), a bottom electroplating metal layer (50), a top cover membrane (60), and a bottom cover membrane (70). The circuit board also comprises: a PTH (80) which is connected with ground wires of the top conductive layer (20)and the bottom conductive layer (30); a high heat-conducting glue layer (90) and a metal substrate (91), wherein the metal substrate (91) is covered on the bottom cover membrane (70) through the high heat-conducting glue layer (90) and the metal substrate (91) is connected with the bottom electroplating metal layer (50) through a bottom pad (92) so that a heat radiation effect can be achieved. The above structure is adopted in the invention so that heat resistance and heat-conducting property of the circuit board with the novel structure can be greatly raised. Therefore, heat radiation requirements of a large power LED circuit board can be completely satisfied so that service life of products can be prolonged.

The invention discloses an intelligent variable-frequency motor and a water supply system. The intelligent variable-frequency motor comprises a casing, a stator, a rotor, a controller and a variable-frequency module, wherein the stator and the rotor are mounted in the casing; the rotor is provided with a rotating shaft; one end of the casing is an output end part, and the other end of the casing is a non-output end part; one end of the rotating shaft is an output end, and the other end of the rotating shaft is a non-output end; the output end of the rotating shaft extends out of the output end part of the casing; an electrical installation cooling cavity is formed in the output end part of the casing, and the electrical installation cooling cavity extends in the axial direction of the rotating shaft in the aspect of height; the rotating shaft is provided with a rotating shaft extending part matched with the electrical installation cooling cavity for extending; the controller and the variable-frequency module are arranged in the electrical installation cooling cavity. The overall size of the intelligent variable-frequency motor is reduced, the integration level of the intelligent variable-frequency motor is increased, and the reliability of the intelligent variable-frequency motor is improved.

The invention discloses a prefabricated cabin type transformer substation and a heat dissipation control method. The prefabricated cabin type transformer substation comprises a communicated air channel, a first prefabricated cabin, a second prefabricated cabin and a third prefabricated cabin, wherein a transformer main body is arranged in the first prefabricated cabin, a cooling fin is arranged in the second prefabricated cabin and a neutral point disconnecting switch is arranged in the third prefabricated cabin; the neutral point disconnecting switch is connected with the transformer main body through a wire; the communicated air channel is located under the first prefabricated cabin and the third prefabricated cabin, and cabin bottoms of the first prefabricated cabin and the third prefabricated cabin both are provided with a ventilating grate communicated with the connected air channel; the top of the first prefabricated cabin is provided with an exhaust outlet and a temperature sensor, a fan is also arranged in the first prefabricated cabin, the top of the second prefabricated cabin is an open type structure, and side walls of the second prefabricated cabin and the third prefabricated cabin both are provided with a ventilating shutter. Reduction of running noise and energy consumption of the prefabricated cabin type transformer substation is realized.

The invention discloses a rubber modified phase change heat conduction interface material and a preparation method, and belongs to the technical field of thermal interface materials. The rubber modified phase change heat conduction interface material is prepared from, by weight, 3-10% of basic phase change resin, 1-5% of synthetic rubber, 5-10% of tackifying resin, 0-1% of antioxidant, 0-5% of coupling agent and 69-85% of heat conduction particles. The phase change heat conduction material is especially designed for application with requirements for excellent heat conduction and longer working life; by means of reasonable formula optimization and raw material selection, excellent heat conduction performance can be achieved, and use effectiveness during longer time and reliability under special use conditions can be achieved.

The invention discloses a semiconductor dehumidification device. The device comprises a cold-side radiator, a semiconductor refrigeration sheet, a partition plate, a water tank, a fan, a hot-side radiator and a shell; the partition plate dives the shell from a horizontal direction into a condensation zone and a heat dissipation zone; and the condensation zone and the heat dissipation zone are communicated with each other through ventilation holes formed in the partition plate; an air inlet located in the condensation zone is formed in the upper part of the shell; an air outlet located in the heat dissipation zone is formed in the top of the shell; the semiconductor refrigeration sheet is arranged in the partition plate; the cold end of the semiconductor refrigeration sheet is connected with the cold-end radiator; the hot end of the semiconductor refrigeration sheet is connected with the hot-end radiator; the cold-end radiator and the hot-end radiator are fixed at two sides of the partition plate; the fan is located between the upper part of the hot-end radiator and the air outlet; the water tank is disposed below the cold-end radiator; and an atomization and water draining device is disposed in the water tank. With the semiconductor dehumidification device of the invention, the technical problems of low dehumidification efficiency, complicated structure and difficulty in waterdrainage of an existing semiconductor dehumidification device can be solved. The semiconductor dehumidification device of the invention has the advantages of high dehumidification efficiency and simple structure, and can realize intelligent water drainage.

The invention provides a star sensor temperature control device which comprises star sensors, light shields, flange plates, installation supports, multi-layer heat insulation assemblies and heaters. The head of each star sensor and the corresponding light shield are installed on one side of the corresponding flange plate and connected with the corresponding installation support through the flange plate. The heaters are arranged at the heads of the star sensors. The light shields are connected to the other sides of the flange plates. The outer surfaces of the light shields and the outer surfaces of the installation supports are covered with the multi-layer heat insulation assemblies. The star sensor temperature control device further comprises heat control coatings arranged on the non-installation faces of the flange plates and the outer surfaces of the heads of the star sensors. According to the star sensor temperature control device, the heat dissipation capacity is improved through forming heat dissipation openings and increasing the heat dissipation area, measures such as arrangement of the light shields and the like are taken, and therefore the requirement for heat dissipation of current star sensors can be met; meanwhile, the low-temperature keeping requirement of the star sensors can be met through the main and standby compensation electric heaters, so that the temperature control effect is good.

The invention discloses a temperature control device of a storage battery for a spacecraft. The temperature control device provided by the invention comprises a temperature control plate [2]. Storage battery structure blocks [1] are installed at an inner side of the temperature control plate [2]. Transverse heating pipes are pre-embedded in a side which belongs to the temperature control plate [2] and is close to a storage battery installation surface. Vertical heating pipes [6] are pre-embedded in parts close to the storage battery installation surface. A hot expanding plate [3] is arranged at a part close to the storage battery installation surface. The hot expanding plate [3] transversely extends out of a heat dissipation plate [4]. Sides of the storage battery structure blocks [1] are provided with heating devices. The temperature control device provided by the invention solves the problem of temperature control of a high-calorific value storage battery used for a spacecraft, and has good temperature control effects, high reliability and a flexible design.

The invention provides an improved high power LED streetlight with larger irradiated area and more hermetical sealing. The streetlight comprises a light source module, namely an upper casing body module, a light distribution module, namely a lower casing body module, and a casing body opening and closing module, wherein, the light source module is composed of a driving power source, a high power LED and an upper casing body, and the high power LED is installed on the upper casing body and connected with the driving power source; the light distribution module is composed of a reflection shade, a glass shade, a seal ring with a glass shade and a lower casing body, and the glass shade with the glass shade and the reflection shade are arranged on the lower casing body in sequence; the casing body opening and closing module is composed of a locking piece and a supporting piece, the locking piece connects two ends of the upper and the lower shell bodies as a whole and ensures the upper casing body rotate around a shaft, and the supporting module is connected with the other two ends of the upper and the lower shell bodies and ensures the upper and the lower shell bodies are closed or opened; and when the upper and the lower shell bodies are closed, the high power LED on the upper casing body is positioned at the middle part of the reflection shade which is on the lower casing body. The streetlight is mainly used for lighting a street.

The invention relates to an energy-saving engine room heat regulation system of a high-power wind driven generator, which is used for solving the problem of heat regulation of wind driven generators. The heat regulation system consists of a refrigeration circulating system and a liquid cooling circulating system, wherein the refrigeration circulating system is arranged outside the engine room of the generator and is a refrigerant closed loop comprising a compressor, a condenser, a main electromagnetic expansion valve and an evaporator; the liquid cooling circulating system comprises a frequency-conversion control cabinet, a generator, a gearbox, an evaporator and a circulating pump, the frequency-conversion control cabinet, the generator and the gearbox are connected together in parallel and then connected with the evaporator and the circulating pump to form a secondary refrigerant closed loop, and the evaporator is formed by an inner pipe and an outer pipe which are sleeved together; the inner pipe is connected into the refrigeration circulating system; and a cavity between the inner pipe and the outer pipe is connected into the liquid cooling circulating system. The heat regulation system organically combines a refrigerating device and a heating device, has strong cooling capacity and low cooling and heating energy consumption and can guarantee the safe and efficient operation of the high-power wind driven generator.

The invention discloses a light-emitting diode (LED) high-roof lamp, which comprises a driver, a radiator assembly and a light source assembly, wherein the radiator assembly has a bowl-shaped structure; radiating fins of the radiator assembly are arranged in a circumferential array and are buckled mutually to form a bowl wall frame; and the light source assembly has an integrally-encapsulated structure, is fixed to a bowl abdomen enclosed by the bowl wall frame and is electrically connected with the driver fixed to the bowl bottom of the bowl-shaped structure in a movable mode. According to the LED high-roof lamp, due to the utilization of a radiating structure of combining a heat conduction pipe and the radiating fins, a good radiating effect is ensured, and both the light source assembly and the radiator assembly are easy to disassemble and replace.

The invention provides a phase change graphite heat conduction material with high thermal conductivity. The phase change graphite heat conduction material with high thermal conductivity is composed of the following substances: 10-25% of base phase change resin, 0-5% of an antioxidant, 0-5% of a crosslinking agent, 1-5% of a coupling agent, and 40-80% of graphite heat conductive particles. The phase change graphite heat conduction material provided by the invention can be used for radiator interface heat dissipation and the like in the heat source component / LED assembly technology of semiconductor surface packaging, and greatly improves the heat dissipation effect and long-term reliability of heat source components and LED radiators. The product has the advantages of excellent surface wetting performance and fast and effective heat dissipation effect, good electrical performance, low cost, and especially excellent long term use effect. The preparation method of the product is simple, can be applied to mechanical process and manual use, etc., can meet the increasingly high heat dissipation requirements of high-end electronic products, like PC, game machines and high power LED.

An oil bath-based natural circulation and heat pipe-coupled battery pack thermal management system relates to an automotive battery thermal management system. The invention aims to solve the problem that overlying heating and dried-up electrolyte of a present power battery pack lead to swelling, fire breakout and explosion of the power battery pack. The oil bath-based natural circulation and heat pipe-coupled battery pack thermal management system contains multiple heat pipes and multiple circulating pipes. A single battery adopts vacuum seal. An evaporator section of each heat pipe is arranged inside a power battery box, and a condensation section of the heat pipe passes through the top cap of the box body to be arranged outside the power battery box. A phase-change material is arranged inside the heat pipe. Residual space of the power battery box is filled with transformer oil. Left and right walls of a housing are both provided with multiple circulating pipes. One end of each circulating pipe is communicated with the upper part of the housing, and the other end of the circulating pipe is communicated with the lower part of the housing. Thus, natural circulation of transformer oil is formed. The system provided by the invention is used for power battery thermal management.

The invention discloses a controllable radiation system, which comprises a main radiator in which a fan is arranged and a heat exchanger, wherein the water inlet of the heat exchanger is communicated with a coolant liquid outlet of an engine, and the water outlet of the heat exchanger is communicated with the coolant liquid return opening of the engine; and the radiator can be connected between the coolant liquid outlet and the coolant liquid return opening of the engine selectively. The system is mainly characterized in that: the fan is driven by a driving element which is powered by a power element; and the system also comprises a first temperature sensor for testing the temperature of the liquid in the coolant liquid return opening of the engine, a second temperature sensor for testing the temperature at the air outlet of the radiator and a control device for controlling the rotation speed of the driving element according to the temperature signals sent by the first temperature sensor and the second temperature sensor. The radiation power of the radiation system can be regulated according to the radiation amount required by a power system, so that the radiation power can be changed in real time according to work requirements. As a result, the radiation efficiency is improved and power waste is reduced.

The invention discloses a variable frequency motor and a water supply system. The variable frequency motor comprises an outer housing, a stator, a rotor and a frequency conversion module. The stator and the rotor are installed in the housing; the rotor has a rotation shaft; one end of the housing is an output end; the other end of the housing is a non-output end; one end of the rotation shaft is an output end; the other end of the rotation shaft is a non-output end; the output end of the rotation shat is projected out of the housing through the output end; an electric installation heat radiation cavity is formed on the output end of the housing; the height of the electric installation heat radiation cavity is extending along the axial direction of the rotation shat; the rotation shaft has a rotation shaft extension part for matching with the extension of the electric installation heat radiation cavity; and the frequency conversion module is positioned in the electric installation heat radiation cavity. The variable frequency motor reduces the integral volume of the variable frequency motor and improves the integration degree and the reliability of the variable frequency motor.

The invention provides a power cabinet of an inverter. The power cabinet comprises a cabinet body and a power device arranged in the cabinet body. The cabinet body comprises a low security installation cavity and a high security installation cavity, which are sealed and separated. The power device comprises a high security grade power device arranged in the low security installation cavity and a low security grade power device arranged in the high security installation cavity. The low security installation cavity has an outer cold wind inlet and an inner cold wind outlet which communicate with the outside. A first draught fan is arranged in the low security installation cavity. The power cabinet also comprises a heat exchanger used for dissipating heat of the high security installation cavity. According to the invention, a forced cold wind duct is formed in the low security installation cavity; external cold wind enters the low security installation cavity to carry out heat dissipation; sealed type heat dissipation is achieved for the low security grade power device in the high security installation cavity through the heat exchanger, so damage to the low security grade power device caused by polluted cold wind is avoided; the whole security grade of the inverter is improved; and the service lifetime of the inverter is prolonged.

The invention relates to a high-power vertical tile type multi-channel digital transceiving sub-array designing method, wherein a digital-numerical hybrid transceiving SOC is used for effectively reducing dimension, power consumption and cost of an active circuit. Modes of interlayer perpendicularity and no-cable interconnecting of a filter are used for settling a problem of vertical transmissionof a high-power microwave signal. Not only can high-efficiency of a microwave signal be ensured, but also tile dimension can be reduced. A circuit layout in a single radiation unit area is realized. Aform that the back of a power amplifier abuts against a heat radiator settles a heat radiation problem of a high-power heating element.

The invention discloses a cooling device and method for a cylindrical power battery pack. The cooling device comprises a battery pack and a cooling structure thereof. The cooling structure includes a cooling channel which is distributed at two side faces of the battery pack and the inside of which is provided with a cyclically flowing cooling working medium, and heat pipes for transferring the heat generated by the battery pack to the channel body of the cooling channel; the heat generated by the battery pack is indirectly transferred to the channel body of the cooling channel through the heat pipes, and the heat generated by the battery pack is taken away by the cyclically flowing cooling working medium in the cooling channel. For the device, the heat pipes are adopted for heat-dissipation of the battery pack, the entire device is compact, small in floor space, flexible in layout, and easy for the connection between single cells. The cooling device has the advantages of simple structure, environment protecting and energy saving, easiness in installation and convenience in maintenance, so the problem of dissipation of the cylindrical power battery pack under different working conditions is solved to reduce the maximum temperature and the overall temperature difference of the battery pack, which has a good application prospect.

The invention discloses an LED packaging technical process based on an iron substrate, and belongs to the technical field of an LED packaging process, for solving the technical problem of providing an LED packaging technical process based on an iron substrate. For a lamp bead with power of 0.5 W below, the iron substrate is used to replace a copper substrate support, the heat dissipation requirement is met, the material cost can also be reduced, the economic benefits are improved, and after the surface of the iron substrate is plated with nickel, the iron substrate is also plated with silver so as to maintain the excellent performance of a product. The technical scheme employed by the invention is as follows: the LED packaging technical process based on the iron substrate comprises the steps of crystal expanding, crystal solidifying, baking, wire welding, dispensing, material stripping, light splitting, dehumidifying, bagging, examining and packaging. The LED packaging technical process is carried out on the substrate prepared by taking iron as a raw material. The LED packaging technical process based on the iron substrate can be applied to the technical field of the LED packaging process.

This invention refers to a lamp set for decoration and illumination, which contains rubber pad connected casing and light shade, several LED, LED substrate, wherein the casing including dismountable upper and lower casing integrally jointed by heat conductive seal pad, LED substrate fixed on upper casing with heat conductive material, electric chamber set in casing and having circuit board. Said invention has advantages of long service life, energy saving, changeable light brightness and color and usable with solar energy.

The embodiment of the invention provides a heat exchanger, a heat dissipation method for the heat exchanger and communication equipment. The heat exchanger comprises a first air flue and a second air flue; the first air flue and the second air flue are mutually isolated; the first air flue is provided with a first fan unit and a first group of heat dissipation thin tubes; the second air flue is provided with a second fan unit and a second group of heat dissipation thin tubes; the upper ends of the first group of heat dissipation thin tubes along the gravity direction are communicated with the upper ends of the second group of heat dissipation thin tubes along the gravity direction through steam confluence tubes, and the lower ends of the first group of heat dissipation thin tubes along the gravity direction are communicated with the lower ends of the second group of heat dissipation thin tubes along the gravity direction through liquid confluence tubes; the first group of heat dissipation thin tubes, the steam confluence tubes, the second group of heat dissipation thin tubes and the liquid confluence tubes form a closed pipeline; and heat vaporization liquid is filled in the closed pipeline, radiating fins are arranged between the heat dissipation thin tubes of the first group, and radiating fins are arranged between the heat dissipation thin tubes of the second group. The flow resistance of airflow flowing through the heat dissipation thin tubes is low so as to well meet the heat dissipation requirement of the communication equipment.

The invention discloses an aluminum nitride multilayer-ceramic leadless platy carrier packaging shell and relates to the technical field of electronic packaging. The aluminum nitride multilayer-ceramic leadless platy carrier packaging shell comprises a ceramic shell, the peripheral outer wall of the ceramic shell is provided with a metal conduction channel, the ceramic shell is made with aluminum nitride, the ceramic shell includes an upper cavity which opens up in the front and a lower cavity which opens down in the back, a base plate is disposed between the upper cavity and the lower cavity, both the lower surface and upper surface of the base plate are provided with bonding areas to bond chips or passive devices, the periphery of the bonding areas is provided with a lead bonding area, the lead bonding areas can be connected with the chips bonded to the bonding areas through bonding wires, and the lead bonding areas are connected with the metal conduction channel; the periphery of the lead bonding area is provided with a sealing area, a leading-out end pad is arranged at the periphery of the sealing area on the lower surface of the ceramic shell, and the leading-out end pad is communicated with the metal conduction channel. The aluminum nitride multilayer-ceramic leadless platy carrier packaging shell is effective in improving heat-radiating efficiency for a device, reducing junction temperature, improving reliability of the device and prolonging service life of the device.

The invention discloses a solar simulator device with an off-axis angle of 29-45 degrees and for a large-irradiation area environment test and belongs to the technical field of spectrums. According to the technical scheme, the solar simulator device with the off-axis angle of 29-45 degrees and for the large-irradiation area environment test comprises a lamphouse assembly, a light shading barrel, a light blocking assembly, an optical integrator assembly, a solar simulator body and a vacuum tank body assembly. According to the solar simulator device with the off-axis angle of 29-45 degrees and for the large-irradiation area environment test, the lamphouse assembly, the light shading barrel, the light blocking assembly, the optical integrator assembly, a vacuum tank body sealing window and a large-curvature spherical collimation reflector are arranged on the optical axis line of an optical system from left to right, a second focal plane of an ellipsoid collecting lens is located at the position of a field lens array, the large-curvature spherical collimation reflector is arranged inside a vacuum tank body, an irradiation surface is located on the focal plane of the large-curvature spherical collimation reflector in the vacuum tank body, the off-axis angle is enlarged by the whole device, and the ovalization of the irradiation surface is eliminated.

The invention discloses an annular micro-channel heat exchanger and a fluid flow heat exchange experimental device thereof. The annular micro-channel heat exchanger comprises a substrate and two U-shaped grooves, wherein the two U-shaped grooves are engaged with the two opposite sides of the substrate respectively; the substrate comprises an upper cover plate and a lower cover plate; the lower cover plate is provided with four channels; each of the channels consists of a primary flow channel, a secondary annular flow channel and inclined flow channels; the primary flow channel of each channelis divided into two parts which are disposed on two ends of the lower cover plate respectively; the corresponding secondary annular flow channel is connected between the two parts; the inclined flow channels are disposed in the middle area of the secondary annular flow channel; the upper cover plate and the lower cover plate are closed to make each channel be an enclosed independent space with twoopen ends; and a straight line where the four channels are located is in parallel with a straight line where the two U-shaped grooves are located.