147 results about "Phase change temperature" patented technology

The invention discloses a dynamic self-adaptive radiation refrigeration material which comprises the following components in percentage by mass: 15-30% of matrix resin, 40-60% of a ternary function system, 1-3% of a dispersing agent, 2-5% of a cross-linking agent and the balance of deionized water, the ternary function system is composed of a temperature-sensitive block copolymer, phase change microcapsules and rare earth doped infrared emission particles according to the mass ratio of (1-2): (2-3): (1-1.5). According to the refrigeration material, when the environment temperature is higher than the low critical solution temperature of the temperature-sensitive copolymer, the temperature-sensitive chain segment shrinks to expose the rare earth particles, so that high reflectivity of sunlight and high emissivity of an atmospheric window are realized, and refrigeration is enhanced; when the temperature is lower than the phase-change temperature of the phase-change material, the temperature-sensitive chain segments stretch and wrap the rare earth particles, the infrared emissivity is reduced, heat loss is reduced through phase-change heat release, the dual functions of efficient refrigeration in summer and heat loss reduction in winter are achieved, and the applicability of the coating in an area with the large temperature difference is improved.

The invention discloses a heat-treatment-free control method for inhibiting hydrogen-induced cracks in ultrahigh-strength steel welding, which belongs to the technical field of welding, and enables weld metal to obtain a low-phase-transition-temperature characteristic and a double-phase structure containing retained austenite under a specific dilution rate window by cooperatively regulating and controlling components of a welding material and welding process parameters. Therefore, preheating-free and post-heat-treatment-free efficient welding of the ultrahigh-strength steel is achieved. According to the method, the volume expansion effect generated by low-temperature martensite phase transformation of weld metal is utilized to actively counteract restrained tensile stress formed by welding cooling shrinkage; on the other hand, the effect of the retained austenite serving as an efficient'hydrogen trap 'is fully played, migration and enrichment of hydrogen to crack sensitive areas such as a heat affected zone or a fusion line are effectively blocked, and finally effective inhibition of hydrogen-induced cracks in ultrahigh-strength steel welding is achieved; the obtained welding joint is free of hydrogen-induced cracks and has the mechanical property level well matched with base metal.

The invention discloses an electrode slurry dynamic curing method. Rapidly heating a current collector-slurry interface to 100-120 DEG C by adopting electromagnetic induction, and triggering adhesive crosslinking and thermal expansion microspheres to generate pre-compressive stress; stress is relieved through phase change microcapsules in the hot air drying process of 70-90 DEG C; and finally, curing is completed at the temperature of 110-130 DEG C. The electrode slurry comprises thermal expansion microspheres and phase change microcapsules; the initial expansion temperature of the thermal expansion microspheres is 75-105 DEG C, and the phase change temperature of the phase change microcapsules is 45-65 DEG C; by reversing a traditional curing path and combining thermal expansion microspheres and phase change microcapsules with specific temperature response, the problems of demolding and cracking caused by negative electrode drying stress are solved, the interface integrity is remarkably improved, and the cycle life is remarkably prolonged.

The invention discloses a recoverable high-enthalpy-value solid-solid phase change material and a preparation method thereof. Solid phase constraint of a liquid phase change material is achieved through a topological entanglement effect generated by a hydrogen bond network and polymer macromolecules. The coupling effect of the two limits the movement between low-molecular-weight phase change material molecules at the phase change temperature, and high-temperature solid-solid phase transformation is achieved. The solid-solid phase change material prepared by the method has a high enthalpy value and also has recoverability. In addition, due to the excellent light absorption capacity of the graphene oxide sheet, the graphene oxide sheet has a potential excellent function in the aspect of solar photo-thermal conversion.

The invention provides a transparent ice block preparation control method and a refrigerator, and the method comprises the steps: responding to an ice making instruction, and controlling an ice making device to execute an ice making process; obtaining the temperature of a water body in an ice-making box in the ice-making device in the ice-making process; when the temperature of the water body enters the phase change temperature interval, a heater is controlled to execute a pulse heating control program, so that transparent ice blocks are obtained; wherein the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase change temperature sub-intervals in the phase change temperature interval, and controlling the heater to operate in a mode of repeatedly executing heating pulses for multiple times for the phase change temperature sub-intervals. According to the method, heating pulses are repeatedly executed for multiple times in a phase change temperature interval of water, the growth speed and direction of ice crystals are actively intervened, an overflow path is created for dissolved gas, the problem of ice block white turbidity is solved, and high-transparency ice blocks are prepared.

The invention relates to a refrigerator and a control method thereof. The refrigerator comprises a refrigerator body, a storage assembly and a refrigerating system. The box body is provided with a storage chamber. The storage assembly is located in the storage chamber and comprises a phase change material. The refrigerating system is configured to provide cooling capacity for the storage chamber. The phase change temperature and the temperature of the phase change material are obtained. And then according to the phase-change temperature of the phase-change material and the temperature of the phase-change material, the cooling capacity provided by the refrigerating system is controlled so that the deviation value between the phase-change temperature of the phase-change material and the temperature of the phase-change material can be smaller than a preset value. In this way, the supply amount of the refrigerating capacity is controlled according to the temperature of the phase-change material, and therefore the temperature of the phase-change material tends to the phase-change temperature. The phase-change material enables the storage chamber to be at the phase-change temperature stably through cold storage and cold release, the temperature of the storage chamber is not prone to change when the door is opened and closed repeatedly, and stability is good. And the phase change material is used for cold storage and cold release, so that energy consumption can be reduced.

Provided in the present application are a heat-absorbing material and a preparation method therefor, a heat-absorbing part, a battery assembly and an electric device. The heat-absorbing material comprises a carrier, an entrainer and a phase-change component, wherein the phase-change component and the entrainer form a negative azeotrope. The entrainer and the phase-change component in the heat-absorbing material of the present application form a negative azeotrope, such that the phase-change component undergoes phase change when the temperature is lower than the phase-change temperature of the phase-change component, thereby absorbing heat, realizing a heat-absorbing effect, improving the heat-absorbing response speed of the heat-absorbing material, and further improving the usage safety of the battery assembly.

The invention relates to the technical field of train pipeline anti-freezing assemblies, and discloses a plateau train pipeline anti-freezing and cold-resistant device which comprises a pipeline body, a protection assembly is fixedly connected to the center of the pipeline body, jackets are fixedly connected to the left side and the right side of the protection assembly correspondingly, and the pipeline body is arranged in the jackets; movable plates are movably connected to the top side and the bottom side of the interior of the pipeline body, the ends, close to the symmetrical faces of the movable plates, of the movable plates are arc-shaped, a phase-change material is loaded between the two movable plates, the phase-change material is particularly an eutectic mixture, and the phase-change temperature of the eutectic mixture is 3-5 DEG C. Sealing rings are movably connected to the left side and the right side of the clamping sleeve correspondingly. An auxiliary assembly is fixedly connected to the rear end of the protection assembly, a mounting plate is fixedly connected to the center of the interior of the auxiliary assembly, two connecting bases are fixedly connected to the rear sides of the top and the bottom of the auxiliary assembly correspondingly, and the device has the advantages that the heat preservation effect of the device on a pipeline during heat tracing cable maintenance is improved, and a user can use the device conveniently.

The present application relates to the technical field of battery thermal management, in particular to a preparation method of a thermal activation battery with silicon-aluminum alloy high-temperature phase change material; in the preparation method, a certain amount of aluminum powder and silicon powder are selected as raw materials and mixed to obtain a liquid alloy by heating, the liquid alloy is defoamed and degranulated, and finally the bulk alloy is cooled to obtain a block alloy, the block alloy is sliced according to the size to obtain a sheet material, and the sheet material is assembled into the battery body in a layer insertion manner; the alloy phase change material prepared by the present scheme has high thermal conductivity, suitable phase change temperature and phase change enthalpy value, thereby having strong thermal management efficiency, being beneficial to regulating and controlling the surface temperature of the battery and prolonging the service life of the battery; in the present scheme, the alloy phase change material is cut and assembled into the thermal activation battery, and has the advantages of low cost, simple operation, good use effect and the like.

The application provides a phase change temperature control internal curing function aggregate for high-strength concrete and a preparation method thereof, and relates to the technical field of building materials. A phase change material paraffin is arranged in an inner layer, and a heat conduction water storage layer composed of carbon fibers, graphite powder, superabsorbent resin, fly ash, phosphorus slag powder, slag powder, quicklime, polyacrylamide, clear lime water and an additive is coated on the outside to form aggregate granulation and molding. The carbon fibers are connected to the dispersed graphite powder to form a heat conduction net structure with line connection points, improve the heat conduction performance, promote the heat conduction between the internal paraffin and the external environment, and the clear lime water activates the fly ash, the phosphorus slag powder and the slag powder in the ingredients to generate a hydration reaction, thereby constructing the strength of the external structure. When the temperature in the concrete is low, heat is released, the whole process is accompanied by slow water release, the double internal curing functions of temperature control and moisture are realized, the cracking of high-strength concrete caused by high hydration heat and large shrinkage is avoided, and the durability of the high-strength concrete is improved.

The invention belongs to the field of ultra-high performance concrete temperature control, and particularly relates to an ultra-high performance concrete member based on gradient phase change material layering and a preparation method of the ultra-high performance concrete member. The ultra-high performance concrete member comprises an ultra-high performance concrete base body and at least three functional layers. The functional layers are sequentially arranged in the ultra-high performance concrete base body in the thickness direction of the ultra-high performance concrete member. Each functional layer contains a microencapsulated phase change material, and the phase change temperatures of the microencapsulated phase change materials in each functional layer are sequentially reduced in the thickness direction of the ultra-high performance concrete member. The at least three functional layers with different phase transition temperatures are arranged in the thickness direction in a gradient manner, so that accurate matching with the spatial and temporal distribution of the hydration heat of the ultra-high performance concrete is realized. The internal and external temperature difference of the component can be remarkably reduced, the occurrence time of a temperature peak value is delayed, early-stage temperature cracks are effectively inhibited, and the integrality and durability of the component are improved.

The invention discloses a precision measurement circuit protection method and device, and the method comprises the following steps: providing an electromagnetic shielding housing which is provided with an accommodation cavity for accommodating a precision measurement circuit; a phase-change material layer is arranged on the inner wall of the accommodating cavity, and the phase-change temperature of the phase-change material is in a normal working temperature interval of the precision measurement circuit; the precision measurement circuit is arranged in the accommodating cavity and is connected with a uniform temperature plate through a heat-conducting medium layer, so that heat generated by the precision measurement circuit can be transmitted to the uniform temperature plate through the heat-conducting medium layer; a temperature detection control unit is arranged and used for detecting the temperature of the vapor chamber in real time; and when the temperature of the uniform temperature plate exceeds a preset threshold value, a temperature control execution mechanism is started to carry out active temperature adjustment on the uniform temperature plate.

The application discloses a kind of high heat-conducting low thermal resistance ceramic sheet materials, preparation method and application thereof, the material includes ceramic substrate and functional coating on the upper surface of ceramic substrate and / or functional coating on the lower surface of ceramic substrate;Ceramic substrate is selected from any one of alumina ceramic sheet, aluminum nitride ceramic sheet, silicon nitride ceramic sheet;Upper functional coating, lower functional coating are PMC phase change material coating and heat-conducting gel coating any combination.The application is coated with functional coating on the surface of ceramic sheet, effectively fills ceramic surface micro gap, significantly reduces interface contact thermal resistance (reduces 50%-89%);PMC coating also has phase change temperature control capacity (phase change enthalpy 50-200J / g), can buffer device transient thermal shock;Coating and substrate are firmly combined, and the thermal resistance change rate is less than 13% after 500 times thermal cycle.The application has the advantages of wide substrate adaptability, high heat-conducting efficiency, excellent insulation performance, simple process and the like.

The utility model discloses an absorption core body with a cool feeling, which comprises a liquid-permeable top layer wrapping material which is a spunbond fiber web or a hot air fiber web; -an underlayer wrapping material; -a reinforcing material between the top layer wrapping material and the bottom layer wrapping material; -a layer of temperature control material on at least one side of the top wrapping material, the layer of temperature control material having a microencapsulated phase change material, the layer of temperature control material having a phase transition temperature of 28 to 36 DEG C. Therefore, the temperature adjusting and energy storing functions can be provided for consumers under the condition that the size or the absorbing function of the absorbing core body is not affected. The utility model further relates to an absorption product with the absorption layer.

The invention provides a wood adhesive and application thereof, and belongs to the technical field of wood processing. By utilizing the phase change characteristic of sodium acetate, when sodium acetate is applied to wood board processing or damaged wood board repairing, part of sodium acetate can permeate into wood cell cavities and cell wall micropores at the phase change temperature, slender crystals can be formed after cooling, a firm interlocking structure is formed with the surface of a wood board, and the bonding performance is improved; due to the salting-out characteristic of sodium acetate, polyvinyl alcohol can be separated from water, more hydrogen bonds are formed between polyvinyl alcohol, and the adhesive property is further improved; after a bonding interface or a repairing interface is cracked due to external force impact, sodium acetate crystals in the wood adhesive can be molten again at the phase change temperature and permeate into wood cell cavities and cell wall micropores, slender crystals are formed after cooling, a firm interlocking structure is formed again with the surface of a wood board, and self-repairing is achieved.

This invention discloses a steel slag cement stone phase change material and its preparation method. The steel slag cement stone phase change material comprises the following components by weight: 50-65 parts cement matrix; 15-25 parts phase change temperature-regulating steel slag filler; 15-25 parts phase change temperature-regulating mineral filler; the phase change temperature-regulating steel slag filler comprises the following components by weight: 10-15 parts steel slag powder, 3-6 parts first phase change material, and 2-4 parts graphene powder; the phase change temperature-regulating mineral filler comprises the following components by weight: 8-12 parts metakaolin, 3-6 parts second phase change material, and 2-4 parts hexagonal boron nitride. The phase change composite material of this invention can absorb and release heat in different phase change temperature zones to delay road surface heating and reduce peak temperature; the phase change material has high encapsulation efficiency and is not prone to leakage during the melting period; at the same time, it maintains or improves the mechanical strength, wear resistance, and thermal conductivity of the cement matrix, thereby meeting the requirements of road engineering construction and service.

The invention discloses a method for packaging an n-eicosane phase change material by using three-dimensional porous PVDF (Polyvinylidene Fluoride), and relates to a method for packaging a phase change material. The invention aims to solve the problems of lower packaging efficiency, poorer heat-conducting property and rigidity in a phase-change temperature range when PCMs are packaged by adopting a one-dimensional or two-dimensional structure in the prior art. The method comprises the following steps: 1, preparing a PVDF solution; 2, mixing of BN and PVDF; 3, preparing a PB porous hybrid membrane; and 4, performing vacuum impregnation. The method is used for packaging the n-eicosane phase change material through the three-dimensional porous PVDF.

This invention relates to high-energy-density phase change composite materials, their preparation methods, and applications, belonging to the field of phase change composite material technology. To address the problems of low energy density, insufficient mechanical properties, and poor processability of current phase change materials, this invention provides a high-energy-density phase change composite material, specifically a lightweight porous cellulose phase change composite aerogel. Internally, it consists of a three-dimensional network framework formed by the cross-linking of vinyl-functionalized cellulose nanocrystals and cellulose nanofibers. The phase change material is uniformly loaded within the pores of this three-dimensional network, with a loading amount of 65.53~91.02 wt%. The phase change temperature range of the composite material is 20~80℃. This invention's phase change composite material, relying on a hierarchical confinement structure, achieves efficient encapsulation and high loading of the phase change material, with a phase change enthalpy as high as 133.2 J / g. It also possesses excellent mechanical and thermal cycling stability and 3D printing performance, making it suitable for scenarios with wide temperature fluctuations and applicable to the field of intelligent thermal management.

The invention relates to the field of preparation of energy storage materials, and discloses an ultrasonic-assisted preparation method of a paraffin / nano-metal composite phase change energy storage material. Comprising the following steps: heating paraffin to a temperature 10-20 DEG C higher than the phase transition temperature of the paraffin to melt the paraffin, and adding nano metal particles subjected to surface modification into the molten paraffin to form a uniform suspension system; a multi-field coupling field composed of an ultrasonic frequency band sound field and an alternating electric field is applied in a molten state, and particles construct a heat conduction channel network at a phase boundary through low-frequency pulse dispersion, medium-frequency sweep frequency chained orientation and high-frequency stable frequency standing wave aggregation in sequence; paraffin molecules are induced by high temperature and high pressure generated by cavitation collapse to react with the metal surface to generate a composite interface layer; graded cooling is carried out in a high-frequency standing wave sound field, so that the particles form concentration decreasing distribution in the vertical direction, and a chain structure is stabilized through a weak alternating electric field; and after curing, carrying out constant-temperature annealing to stabilize the interface layer and eliminate residual stress.

The application provides a slow heat-storage-heat conduction synergic temperature control anti-cracking cement-based material and a preparation method thereof, and relates to the technical field of cement-based building materials. The material constructs a slow heat-storage-heat conduction synergic temperature control system by introducing a slow heat polymer, phase change capsules with different phase change temperature thresholds and liquid alloy heat conduction materials into a cement base. The slow heat polymer is used for delaying the early hydration reaction of cement and reducing the initial heat release rate. The phase change capsules with different phase change temperature thresholds absorb hydration heat in stages during the hydration process, realizing the step-by-step regulation of hydration temperature rise. The liquid alloy heat conduction material has the characteristics of phase change heat storage and high heat conduction, and can form an efficient heat transfer channel in the cement base, promote the uniform diffusion of heat and reduce the local temperature gradient. The synergistic effect of the three makes the hydration heat release peak present a hump distribution, effectively inhibits the temperature rise peak and temperature stress in the hydration process of cement, and significantly improves the anti-cracking performance of the cement-based material.

This invention belongs to the field of intelligent actuators and flexible actuators, and relates to a segmented shape memory alloy driven actuator with adjustable stiffness and its control method. The actuator includes a flexible shell, an isolation element, a shape memory alloy driving element, and a phase change stiffness control material. The isolation element divides the flexible shell into multiple axially arranged cavity structures. The phase change stiffness control material fills each cavity, and the phase change temperatures are not completely identical. Each temperature parameter and driving force satisfies a preset matching relationship. The control method involves controlling the heating temperature of the shape memory alloy driving element to sequentially unlock the equivalent stiffness of the cavities through phase changes of the phase change stiffness control material. This allows for multi-segment controllable equivalent stiffness adjustment under a single driving source. The actuator of this invention has a simple structure and programmable response, making it suitable for soft robots, deformable support structures, and intelligent execution systems.

The invention discloses a low-thermal-conductivity phase change aerogel material as well as a preparation method and application thereof. The phase change enthalpy value of the material is 50J / g to 110J / g; the phase change temperature is 0-60 DEG C; and the heat conductivity coefficient is 0.08 W / (m.K)-0.1 W / (m.K). The novel low-thermal-conductivity phase-change material is generated by curing polydimethylsiloxane (PDMS) and the phase-change microcapsules. The phase change aerogel material is simple in synthesis process, relatively high in phase change enthalpy value and good in phase change cycle stability. The method has important application prospects in the two aspects of heat energy collection and heat insulation temperature control.

This invention discloses a modifier for red bed soft rock, its preparation, and its application in improved construction, belonging to the field of road engineering technology. The modifier comprises the following components by weight: 60-100 parts slag, 10-30 parts fly ash, and 1-10 parts alkali activator. This invention targets the characteristics of red bed soft rock, designing a modifier that significantly improves the strength and water stability of the modified red bed soft rock, meeting the requirements of highway subgrade for bearing capacity and deformation resistance. The bonding reaction between the modifier and the red bed soft rock is an irreversible process, maintaining subgrade strength and water stability for a long time and reducing later maintenance costs. The invention also introduces a phase change temperature-controlled curing film method to reduce the impact of temperature fluctuations on the road surface and subgrade, while allowing for self-regulation of humidity and reuse. This invention solves problems such as high treatment costs, significant environmental damage, limited improvement effects, uneven reinforcement, rapid water evaporation during watering curing, uneven curing, and large temperature fluctuations associated with red bed soft soil treatment.

A busbar (100) comprises a first elongated structure (110A) and one or more second elongated structures (110B) made of a conductive material for transmitting an electric current. At least one section of the busbar structure has a hollow cross-section with an inner cavity (112). The inner cavity (112) is pre-filled with a cooling medium (120) to absorb the heat generated by the electric current transmitted by the busbar (100). The cooling medium (120) can be a conductive phase-change material such as sodium, which has a phase change temperature of 98 °C between solid and liquid. When the temperature of the busbar reaches 98 °C, sodium absorbs the heat without increasing the temperature of the busbar (100), thus preventing a temperature rise in the busbar (100).Since sodium is lighter, it also contributes to reducing the weight of the busbar (100) without significantly affecting the current carrying capacity.

The present application relates to a kind of two-color infrared temperature calibration methods for space station containerless material experiment, obtain the temperature variation of space station containerless material experiment.Heating temperature-time curve of sample measured under the preset certain two-color infrared slope, then mark the characteristic temperature on temperature-time curve, according to the single-color radiant intensity ratio invariable relationship, two-color infrared slope, characteristic temperature and the phase transition temperature obtained by phase diagram or thermal analysis experiment are substituted into the established equation relationship.The correction value of two-color infrared slope is solved, the correction value is substituted back into the equation relationship, and all the temperature data obtained are substituted into one by one, and the corresponding calibration temperature is solved.So far, the corrected two-color infrared slope and the calibrated temperature-time curve are obtained.The method proposed in the present application does not need to rely on thermocouple, and does not need to construct model in advance under the same environment and fit parameters, and the calibrated two-color infrared temperature can be controlled within a smaller error range at the characteristic temperature.

The invention provides a nickel-titanium alloy wire with the ultra-high fatigue life and a preparation method and application thereof.The preparation method of the nickel-titanium alloy wire with the ultra-high fatigue life comprises the following steps that raw materials of titanium, nickel, tantalum, zirconium, hafnium and cobalt are taken to be smelted, a cast ingot is prepared, then forging is conducted, and a blank is obtained; the blank is subjected to multi-pass cold drawing, once intermediate annealing is carried out when the accumulated true strain value of the wire obtained through cold drawing reaches the range of 0.18-0.32, and the steps are repeated till the obtained wire reaches the target size; and the wire is subjected to heat treatment, and the nickel-titanium alloy wire with the ultra-high fatigue life is obtained. According to the preparation method of the nickel-titanium alloy wire with the ultra-high fatigue life, the prepared nickel-titanium alloy wire has extremely high flexibility, ultra-long rotating bending fatigue life and excellent phase change temperature consistency.

This application provides a method, apparatus, and refrigerator for dynamic scheduling of refrigerator cooling capacity, relating to the field of refrigerator technology. The method includes: acquiring phase change temperature distribution information and historical operating condition information of the compressor in each compartment; determining the cooling capacity mobility in each compartment based on the average temperature and phase change temperature distribution information, and determining the phase change response delay time in each compartment based on the phase change temperature distribution information; determining the system thermal inertia coefficient in each compartment based on the cooling capacity mobility and phase change response delay time; determining the heat load rate in each compartment based on the average temperature and historical operating time of the compressor; determining the target compartment that meets preset forward-looking start-up conditions based on the system thermal inertia coefficient and heat load rate in each compartment, and determining the cooling capacity demand of the target compartment and at least one cooling supply compartment; and allocating the schedulable cooling capacity from each cooling supply compartment to the target compartment, thus solving the problem of precise matching of cooling capacity supply and demand.

This invention relates to the field of functional fabric technology, specifically to a hybrid fiber with phase change temperature control fiber and its preparation method. The raw materials for preparing the hybrid fiber, by weight, consist of 70-80 parts polymer matrix, 13-21 parts phase change material, 3-5 parts polyethylene glycol-b-polyglycidyl methacrylate (PEG-b-GMA), 0.6-1.5 parts KH-580, 0.3-1 parts thermally conductive reinforcing phase, and 0.5-1.2 parts functional auxiliaries; the thermally conductive reinforcing phase is micron-sized boron nitride modified with a silane coupling agent using a wet process. This invention, through the synergistic effect of PEG-b-GMA and the anchoring agent KH-580, can simultaneously solve the problems of poor dispersion, easy leakage of phase change material, and poor mechanical properties in existing blended spinning phase change temperature control fibers. The improved fiber properties can meet the requirements of industrial weaving. This invention uses conventional blended spinning processes, requires no additional specialized equipment, has controllable auxiliary agent costs, is simple to operate, and is easy to implement on existing production lines.

The utility model relates to a phase change constant temperature test device in a limited space, which belongs to the technical field of phase change material energy storage, and comprises a simulation machine room, a phase change temperature control module, a heat source module, a refrigeration module and a heating equipment module, the simulation machine room comprises a roof, a floor and a shell, the heat source module is arranged on the outer side of the shell, the phase change temperature control module is laid on the inner side of the roof, the inner side of the shell and the floor, and a ground support is arranged between the floor and the phase change temperature control module. The device is simple in structure and flexible in size design, can be adjusted according to actual simulation requirements, simulates different scenes, further monitors the performance change of the phase change temperature control module in different scenes, and remarkably improves the test efficiency and the test accuracy.

The invention discloses a novel refrigerant and a preparation method thereof, and an underground phase change temperature adjusting device, method and equipment, and relates to the technical field of underground operation, the novel refrigerant containing trichloroethane and dichloropropane provided by the invention is in a liquid state at normal temperature and normal pressure, the boiling point temperature can be about 70-110 DEG C according to different component contents at the normal pressure, and the temperature of the refrigerant can be about 70-110 DEG C according to different component contents. The critical temperature of the novel refrigerant can reach about 130-300 DEG C according to different component contents under pressurization, so that the novel refrigerant provided by the invention can be subjected to phase change in a high-temperature environment, the novel refrigerant can be applied to underground phase change temperature adjusting devices and equipment for high-temperature operation, heat can be absorbed by utilizing heat absorption phase change to realize cooling, and the service life of the novel refrigerant is prolonged. The heat release phase change can release heat to achieve temperature rise, so that heat transfer and temperature control are achieved, the temperature control device can be suitable for controlling the temperature of the working environment of underground instruments and equipment, and the instruments and equipment can normally, stably and reliably work underground.