111 results about "Freezing point" patented technology

The invention relates to the technical field of mine freezing construction, in particular to a deep strong permeable fracture soft rock stratum vertical shaft frozen wall analysis method which comprises the steps that freezing points reaching the freezing temperature are collected and fitted into a freezing temperature field; dividing a freezing area according to the position of each freezing point in the freezing temperature field and the time point when the freezing point reaches the freezing temperature, and forming a freezing boundary according to the morphological characteristics of the freezing area; deriving position points at the frozen boundary according to the positions of the frozen boundary in a plurality of time periods, and checking the advancing trend of the frozen boundary according to the spacing distance and the spacing temperature gradient between the position points; based on the advancing trend of the current frozen boundary, setting a boundary condition under the advancing trend; dividing the freezing temperature field into a plurality of evaluation temperature surfaces by using the boundary condition of the current freezing boundary, iterating the freezing temperature field by using the evaluation temperature surfaces, and correcting the freezing boundary; the accuracy of freezing boundary identification is realized, and the safety and efficiency of freezing construction are improved.

The invention discloses a smoothie forming control method and system for different materials, a computer and a storage medium. The method comprises the steps that hardness gear data and an operation temperature value and an operation temperature change rate in an ice making cavity are obtained in real time; when the operating temperature change rate meets a freezing point triggering rule, obtaining a gear temperature threshold value and gear control data of a corresponding hardness gear according to the current operating temperature value, the hardness gear data, a preset freezing point type database and a type gear control library; when the operation temperature value is smaller than or equal to the gear temperature threshold value, heat preservation maintaining work is carried out, and timing is carried out; when the timing time meets the gear heat preservation adjusting rule, the gear temperature threshold value is updated, and heat preservation maintaining work is carried out; and when the gear temperature threshold value is smaller than or equal to the gear heat preservation maintaining threshold value, final heat preservation maintaining work is carried out according to the gear heat preservation maintaining threshold value, so that the current smoothie hardness is maintained. According to the invention, the material type can be automatically detected, corresponding smoothie forming control work can be carried out, and the smoothie tastes good.

The invention relates to the technical field of pour point and condensation point measurement, in particular to a pour point and condensation point precise measurement method, system and equipment. The method comprises the following steps of: determining a condensation tendency index according to a temperature data sequence fluctuation characteristic, a humidity data sequence change trend and a coupling difference characteristic between temperature and humidity data sequences; a control redundancy index is determined according to the continuous working time of the fan, the condensation tendency index and the numerical deviation characteristics between the power and humidity data sequences; according to the instantaneous change characteristics of adjacent data points in the humidity data sequence, the temperature data sequence and the power data sequence of the current time window, determining a collaborative benefit index; determining a comprehensive evaluation score according to the collaborative benefit index and the control redundancy index; controlling the fan to execute a corresponding operation strategy according to the comprehensive evaluation score and a preset mapping relation between the score and the operation strategy; the operation strategy is repeatedly adjusted until the pour point and the condensation point of the sample are determined, and therefore the fan power responds to environment changes in real time.

The invention provides a control method, device and equipment for preparation of hypotonic nutritious food and a storage medium, and relates to the technical field of preparation control of nutritious products. The method comprises the following steps: obtaining a measured osmotic pressure corresponding to a mixed material of the to-be-prepared hypotonic nutritious food; the measured osmotic pressure is obtained by measuring the osmotic pressure of a material sample of the mixed material based on a freezing point method; inputting the measured osmotic pressure into the trained linear regression analysis model to obtain a predicted value of the peristalsis promotion rate; the model is obtained based on milk powder reconstituted fluid osmotic pressure and zebra fish intestine peristalsis promotion rate training. Determining a preparation process optimization scheme according to the predicted value of the peristalsis promotion rate and the early warning condition of the peristalsis promotion rate, and adjusting process parameters according to the preparation process optimization scheme; wherein the process parameters in the optimization scheme of the preparation process comprise one or more of the content range of different types of proteins, the ratio of exogenous calcium to milk-derived calcium, the homogenizing pressure and the spray drying temperature. According to the method, functional evaluation can be rapidly completed, and preparation parameters can be optimized.

A frozen confection comprising: 25 wt % to 40 wt % freezing point depressants having a number average molecular weight of 200 g mol−1 to 275 g mol−1; distilled monoglycerides in an amount of 0.04 wt % to 1 wt %; and soluble fibre in an amount of 1.4 wt % to 15 wt %.

The invention discloses a chlorine-free long-acting low-corrosion coal anti-freezing solution for railway transportation, which is mainly used for freezing prevention in the railway transportation process of coal, and belongs to the technical field of coal anti-freezing solutions. The coal anti-freezing solution is prepared from the following raw materials and components in percentage by mass: 20 to 27 percent of ethylene glycol, 17 to 24 percent of sodium formate, 4 to 5 percent of urea, 0.09 to 0.7 percent of thickening agent and the balance of water. Compared with a traditional anti-freezing solution, the coal anti-freezing solution prepared by the invention has the following advantages that the raw materials are cheap and easily available, and the preparation can be completed in a normal-temperature state; the corrosion to metal is small, and high-toxicity and environment-harmful substances are not contained; the anti-freezing agent is stable in property, moderate in viscosity and lasting in anti-freezing effect, and does not need to be supplemented during transportation and storage; the freezing point can reach-43 to-55 DEG C, and the problems of freezing in the coal transportation process in winter and corrosion of a traditional anti-freezing solution to the railway carriage wall can be effectively solved after the anti-freezing solution is sprayed on the surfaces of the coal and the carriage wall according to specific conditions.

The invention relates to a portland cement product for negative temperature and application thereof, in particular to application of a negative temperature product containing portland cement clinker and an anti-freezing agent in preparation of a negative temperature product capable of maintaining mechanical properties under a negative temperature condition. According to the present invention, the negative temperature environment applicability is strong, the temperature range of the conventional winter construction can be reached, the rapid strength development rate can be maintained in the negative temperature environment, the hydration heat release peak is advanced by 2-3 h, the construction requirement without the external heat source can be met, the hydration product mainly comprises ettringite and C-S-H, and the foundation is established for the cement product strength. The adopted mixing solution not only can prevent freezing, but also can accelerate coagulation. On one hand, the anti-freezing agent is added into the water, so that the vapor pressure of the water is changed, and the freezing point of the solution is reduced; and on the other hand, the anti-freezing agent contains a component for promoting hydration of the sulfur silicate cement, so that the sulfur silicate cement can be rapidly hydrated under a negative temperature condition, and the purposes of rapid setting and hardening and strength improvement of a cement product are achieved.

A fluid dispensing device and method for adjusting an amount of hygroscopic fluid dispensed to an analytical substrate by a fluid ejection cartridge. The fluid dispensing device includes a fluid droplet ejection head disposed on a fluid cartridge containing a hygroscopic fluid; and a hygroscopic fluid cooler configured to determine a freezing point of the hygroscopic fluid.

A storage and retrieval system includes a grid framework structure including a track system forming a grid. A load handling device is moveable on the track system. Stacks of storage containers are arranged in each of a plurality of storage columns located beneath the track system. The load handling device includes a lifting device arranged to lift one or more storage containers, each including a base wall and opposing sidewalls and end walls extending from the base wall to form a box-like structure having an opening, and a lid for closing the opening to define a cooling tote. At least one of the base wall, and / or opposing sidewalls and / or opposing end walls and / or the lid of the cooling tote includes a pocket housing a refrigerant with a freezing point in a range of −30° C. to 0° C. for storing frozen or chilled foods.

The application relates to the technical field of oil product detection, in particular to a full-automatic condensation point tester and a determination method, which comprises a base and a test tube, the top of the base is fixedly connected with a mounting seat, the surface of the base and the mounting seat is provided with a test bath mechanism and a supporting mechanism, the test bath mechanism enables the test tube placed in the test bath mechanism to be adjusted at multiple angles by rotating the test bath driven by a motor, replaces the original manual bolt structure, controls the rotating angle of the motor through a preset program, realizes accurate positioning, avoids the complicated operation of adjusting each hole in the original structure, prevents the angle from deviating during the test by mechanically clamping and locking the rotating shaft, and then the motor and the electric push rod replace manual adjustment, realize double locking effect, can prevent accidental displacement, and improve the accuracy and efficiency; the clamping mechanism enables four arc-shaped clamping plates to exert uniform radial pressure on the outer wall of the test tube through the first spring, the inner diameter of the clamping plate is designed to gradually increase from top to bottom, and different outer diameter test tubes are compatible.

The invention discloses a composition and a method for prolonging the shelf life of a liquid MDI product. The composition comprises (a) diphenylmethane diisocyanate (MDI), (b) at least one organophosphoric acid derivative with a structure shown in a formula (I), and (c) at least one metal carbonyl compound with a structure shown in a formula (II). The method provided by the invention can inhibit the formation of the MDI dimer, and especially prominently, can improve the solubility of the MDI dimer in a liquid MDI product, reduce the freezing point of the liquid MDI product, prolong the storage life of the liquid MDI product, and improve the storage and transportation stability and operation convenience of the liquid MDI product.

A coolant composition includes a mineral oil or a synthetic oil and a surfactant, in which a conductivity of the coolant composition is lower than 0.1 μS / cm, and the surfactant is a nonionic surfactant that is a fatty acid ester having a freezing point of lower than −15° C. and having a cyclic structure.

The utility model relates to the technical field of household appliances, and discloses a device for making smoothie and a refrigerator. The device for making smoothie comprises: a water storage assembly for storing cold water; and the pressure regulating assembly is communicated with the water storage assembly and is used for obtaining cold water from the water storage assembly under the condition that the smoothie needs to be made, and the cold water is made into the smoothie by adopting a pressure regulating mode. According to the method, the steps of freezing cold water into ice blocks and then mechanically breaking the ice blocks are not required to be executed, so that the process of making the smoothie is simplified, and the smoothie making efficiency is improved. Besides, the smoothie is an ice-water mixture obtained after cold water reaches the freezing point, so that the smoothie is more uniform in particle compared with smoothie produced by fragmenting ice blocks, and the quality of the prepared smoothie is improved.

A freezing point depressant (FPD) fluid distribution apparatus and ice protection system for a propeller blade, the apparatus comprising an upper section and a lower section, wherein the upper section is configured to distribute FPD fluid to the low pressure side of a propeller blade, and the lower section is configured to distribute FPD fluid to the high pressure side of a propeller blade, and wherein the upper and lower sections each comprise one or more FPD fluid chambers, the or each FPD fluid chamber comprising an associated fluid-permeable cover.

A substrate processing apparatus and a substrate processing method capable of suppressing dew condensation on a substrate are provided. The substrate processing apparatus includes: a stage configured to be rotatable; a plurality of holding portions provided on one side of the stage and holding a substrate; a liquid supply portion that supplies a liquid having a temperature higher than a freezing point to a surface of the substrate on an opposite side of the stage; a cooling portion that supplies a cooling gas to a space between the stage and the substrate; a moving portion that changes a distance between the stage and the substrate held by the plurality of holding portions; and a controller that controls the cooling portion and the moving portion. The controller performs a cooling process and a thawing process. In the cooling process, the distance is made a first distance by controlling the moving portion. In the thawing process, the distance is made a second distance longer than the first distance by controlling the moving portion.

The present application relates to the field of food processing technology, and provides a method and a device for purine reduction, and an equipment and an electronic equipment and a storage medium. The method for purine reduction includes the following steps: first cooling step: performing first cooling treatment on a food material to be treated at a first preset cooling rate to reduce a temperature of the food material to be treated to a temperature below a freezing point. By performing first cooling treatment on a food material to be treated at a first preset cooling rate to reduce a temperature of the food material to be treated to a temperature below a freezing point, the activity of ATP-degrading enzyme in the food material to be treated can be rapidly inhibited, which can quickly and effectively inhibit the generation of hypoxanthine, thereby reducing the generation of hypoxanthine, reducing the risk of hyperuricemia and gout, and having little effect on the taste and quality of the food material.

The invention relates to the technical field of oil production engineering, in particular to an oil well shaft watering temperature raising parameter determination method, and aims to solve the technical problem that the watering amount and the watering temperature cannot be determined by a watering temperature raising process in the related technology. The oil well shaft watering temperature raising parameter determination method comprises the following steps that S1, a relation function corresponding to the wellhead output liquid temperature and the liquid production capacity of an oil well in different seasons is found out; s2, according to the liquid production capacity Q1 of the target oil well, a corresponding relation function is selected, and the original output liquid temperature T1 of the target oil well is calculated; and S3, the temperature T0 of new output liquid of the target oil well is set, the required watering amount Q2 and watering temperature T2 of the target oil well are calculated according to the energy conservation calculation formula Q2T2 = k (Q1 + Q2) T0-Q1T1, T0 is larger than the crude oil freezing point of the target oil well, and the coefficient k is 0.7-1. According to production basic data of an oil well, the watering amount and the watering temperature needed by shaft watering temperature increasing are obtained through simulation calculation, and data guidance is provided for the shaft watering process.

To provide a household refrigerator that can store food while suppressing chilling damage and maintaining its quality. [Solution] In this embodiment, the household refrigerator 1 has a control unit 45 that repeatedly performs a refrigeration cooling operation to cool the refrigerated storage compartment and a freezing cooling operation to cool the freezer compartment, while repeatedly performing a cooling and preservation operation to adjust the refrigerated storage compartment to a first temperature above the freezing point, and a recovery operation to adjust the refrigerated storage compartment to a second temperature higher than the first temperature to recover from low-temperature damage to food. The control unit performs such a procedure that the total time for performing one cooling and preservation operation and one recovery operation is longer than the total time for performing one refrigeration cooling operation and one freezing cooling operation.

A chemical composition for increasing density of liquids such as water for sports, bathing, leisure and / or rehabilitation uses includes in weight percentage: potassium citrate, between 1.2% and 63%; sodium citrate, between 1.5% and 66%; potassium chloride, between 2.2% and 97%; potassium ascorbate, between 5.1% and 94%; and sodium benzoate, between 1.03% and 22%. The components are water-soluble salts, environmentally friendly, which are common food additives, what makes them safety for humans. The composition can be added to water of swimming pools, ponds, tanks, rafts, bathtubs or artificial beaches, where it increases density, increasing floatability and facilitating the practice of sports, swimming, bathing or other leisure activities. It also helps to prevent development of microorganisms or other polluting substances and to diminish freezing point of the water where it has been added.

The invention relates to an icing detection method of an ice crusher, which is applied to a controller of the ice crusher, and the method comprises the following steps: in a stable observation time period of a refrigeration stage, obtaining a current temperature of a mixture and a current stress signal of a stirring part in a stirring process; determining a target freezing point corresponding to the mixture, and setting a dynamic detection temperature window based on the target freezing point; when the current temperature falls into the dynamic detection temperature window, performing multi-frequency energy analysis on the current stress signal to obtain a multi-frequency energy value; determining a normal stress fluctuation value corresponding to the stress response of the stirring part at the current temperature; and if the multi-frequency energy value exceeds the preset multiple of the normal stress fluctuation value, it is judged that the ice crystal adhesion risk exists, and the refrigeration system is controlled to execute intervention operation. According to the invention, the abnormal icing condition of the ice crusher can be identified.

Methods for separating a first material flow containing a dissolved substance are already known in which said first material flow is divided into a second material flow and a third material flow such that the third material flow has an increased concentration of the dissolved substance compared to the second material flow. In such methods, this is achieved by means of a freezing process in which the first material flow is pre-cooled in a heat exchanger and solidified in a heat pump, whereupon the ice is mechanically crushed and centrifuged, allowing the extraction of a liquid fraction containing the dissolved substance which does not integrate into the ice lattice. In such a method, the invention provides a second heat pump which only takes over the heat transfer in the region of the freezing point, meaning that its efficiency is particularly high due to the substantially constant temperature on both sides.

This method for producing a frozen dessert has a freezing step in which a raw material liquid containing live bifidobacteria is frozen to obtain a partially frozen product. In order to suppress death of bifidobacteria, the freezing temperature in the freezing step is set to be lower than or equal to the freezing point of the raw material liquid, and the absolute value of the difference between the freezing point of the raw material liquid and the freezing temperature is set to be less than or equal to 2.0°C.

The invention relates to gel pen ink with low temperature resistance, which adopts a humectant A capable of enabling an ink system to have a low freezing point, a humectant B capable of endowing the ink system with high moisture retention, and a humectant C capable of endowing the ink system with auxiliary moisture retention and lubricity, so that a water-based organic solvent system has the characteristic of low freezing point; the freezing point of the ink is reduced, so that the problem of phase separation caused at low temperature is avoided, and the gel pen ink can be maintained to have good moisturizing performance and certain lubricity so as to maintain good writing smoothness; a compound system of the high-shear thickening agent A and the low-shear thickening agent B is adopted, so that the ink can still keep good non-Newtonian fluid characteristics at a low temperature and has normal viscosity and thixotropic performance, meanwhile, the viscosity stability of the ink is maintained by using the antifreeze agent, the problem that the viscosity of the ink is suddenly changed due to environment change is avoided, and the viscosity stability of the ink is improved. Therefore, the stability of the ink is maintained.

The invention relates to the technical field of laundry products, in particular to a low-temperature high-concentration washing liquid and a preparation method thereof. The cleaning agent is prepared from the following components in percentage by weight: 38% of isomerized 1307, 28% of secondary alcohol aeo-9, 10% of propylene glycol, 0.3% of compound enzyme, 2% of glycerol, 21.2% of deionized water and 0.5% of essence. According to the low-temperature high-concentration washing liquid and the preparation method thereof, the isomerized 1307 and the secondary alcohol AEO-9 are compounded according to a specific proportion, and the synergistic anti-freezing effect of the propylene glycol and the glycerol is combined, so that the freezing point of a system is remarkably reduced, the pH value can be adjusted according to the actual situation, and the low-temperature high-concentration washing liquid is prepared. The prepared washing liquid can still keep good fluidity after being stored for a long time at 0 DEG C or even lower temperature, is free of crystallization and solidification, and solves the problem of freezing of highly concentrated products in winter.

The present disclosure addresses the problem of providing a phase change determination system capable of determining the occurrence of a phase change. A phase change determination system (1) is provided with: a temperature sensor (31) for acquiring the temperature of a coolant (21); a database (43) for storing a reference temperature set in association with the coolant (21); and a determination unit (47) that determines whether or not the phase change has occurred in the coolant (21) on the basis of the acquisition results of the temperature sensor (31) and the reference temperature. The reference temperature includes a first reference temperature set to be lower than the freezing point of the coolant 21, and the determination unit 47 determines that the coolant 21 begins to solidify by changing to rise within a temperature interval lower than the first reference temperature according to the acquisition result of the temperature sensor 31.

The present invention discloses a high-pressure, energy-saving, quick-freezing device and method for aquatic products, which is below their freezing point. The device comprises a barrier ring plate, a high-pressure curing tank, an ice crystal generation positioning rod, a curing basket, a curing liquid storage tank, a pressure relief pipe, a feed pump, a curing liquid inspection pipe, a feed pipe, and a heating coil. By regulating the freezing point of the curing liquid and separating it, the device controls ice crystal formation in the curing liquid and the aquatic product. Furthermore, the device utilizes the pressure generated by the expansion of ice crystals in the curing liquid to achieve high-pressure, efficient curing of aquatic products below their freezing point at ambient pressure, while also enabling rapid freezing of the aquatic products after high-pressure curing.

Provided is a cold and heat storage agent composition that does not fall into the GHS categories, the cold and heat storage agent composition comprising:(A) a dialkyl ether; and(B) a normal paraffin, whereinthe (A) contains a dialkyl ether having a straight chain alkyl group,the (B) contains a normal paraffin having 16 to 20 carbon atoms, and a content of the normal paraffin having 16 to 20 carbon atoms is 3.0% by mass or more and less than 10.0% by mass based on a total mass of the composition, anda melting point and a freezing point of the composition measured by DSC are within a range of −13.0° C. to +12.4° C.

The utility model provides a dairy product detection work station which comprises a temporary storage mechanism used for storing a container containing a sample to be detected; the pretreatment mechanism is used for carrying out oscillation and uncovering treatment on the container; the nitrite detection mechanism is used for performing nitrite detection on the to-be-detected sample in the container; the density detection mechanism is used for detecting the density of the to-be-detected sample in the container; the freezing point detection mechanism is used for carrying out freezing point detection on the to-be-detected sample in the container; the acidity detection mechanism is used for detecting the acidity of the to-be-detected sample in the container; and a transfer mechanism. According to the dairy product detection work station, multiple functions of caching, pretreatment, nitrite detection, density detection, freezing point detection, acidity detection and the like are integrated, and the efficient transfer mechanism is arranged, so that continuous and rapid detection of dairy products can be realized, and key indexes such as nitrite content, density, freezing point and acidity in the dairy products can be accurately measured; and automation and intellectualization of the detection process are realized.

The present application discloses a vapor chamber, a radiator, and an electronic device. The vapor chamber comprises a first substrate, a second substrate, and a capillary layer. The second substrate and the first substrate are stacked and define a cavity, and a cooling medium is arranged in the cavity. The capillary layer is arranged in the cavity and used for providing capillary force for the cooling medium during return. The first substrate is provided with a recessed part recessed towards the second substrate. The capillary layer is provided with a first area corresponding to the recessed part, and a clearance groove is formed in the first area. According to the vapor chamber in the present application, a clearance groove is formed in the position of a capillary layer corresponding to a recessed part, so that the size of a base material of the capillary layer in the area is reduced, thereby reducing the liquid storage amount of the capillary layer in the area. When the environment temperature is decreased below the freezing point of a cooling medium, the vapor chamber has larger space to accommodate the change of the volume increase caused by freezing of the cooling medium.

The long-distance horizontal freezing fixed-point pressure relief method comprises the steps that firstly, an orifice device is installed, horizontal pressure relief holes are drilled in the positions corresponding to the orifice device, at least two pressure relief holes with different heights are formed in the same vertical plane, and the horizontal depths of the pressure relief holes with different heights are different; a pressure relief pipe is arranged in the pressure relief hole at the second height or at the second height and below the second height; and finally, the pressure relief hole corresponding to the area needing pressure relief is selected, and the orifice device corresponding to the pressure relief hole is opened for pressure relief. The pressure relief holes with different heights are matched to perform pressure relief on the whole section of long-distance area, and each pressure relief hole only performs pressure relief on the pressure relief area within a certain distance, so that the phenomenon that the pressure is easy to relief at the position close to the hole opening and the pressure relief effect is poor at the position far away from the hole opening is avoided; and therefore, the pressure relief uniformity of the whole long-distance pressure relief area is improved, and the technical problem of uneven deformation of the stratum caused by poor pressure relief uniformity of an existing pressure relief mode is solved.