17results about "Material condensation" patented technology

Embodiments of the present invention provide a frost point hygrometer apparatus utilizing dry ice and ethanol, or liquid nitrogen, as cryogenic coolant. FPH apparatus in accordance with embodiments of the present invention includes a copper cold finger with a sink immersed in a liquid cryogen to provide cooling power throughout the profile, a polished mirror disk residing at the opposite end of the cold finger with ambient air passing over it, a nichrome heater wrapped around the narrow shaft of the continuous cold finger and mirror piece to provide heat to the mirror, an optical source and detector, including an infrared light-emitting diode and a photodiode, to monitor the mirror's reflectivity as condensate accumulates in the form of dew or frost, a biconvex lens to focus the light reflected from the mirror into the photodiode, and a calibrated thermistor embedded in the mirror to measure the frost point temperature.

The present invention relates to a method of determining the concentration of silicon based on the solubility of silicon in a phosphoric acid solution to determine the concentration of silicon generated in the process of etching silicon nitride. The silicon concentration determination method can determine the concentration of only the silicon that is generated during a process of etching silicon nitride using a phosphoric acid solution. The method optically determines the concentration of a silicon compound that is added to increase selectivity.

The invention belongs to the technical field of frozen rock fracture frosting, and particularly relates to a device and method for simulating frosting of gaseous water in frozen rock fracture.The device comprises a constant-temperature box, an observation box, an upper refrigeration table and a telescopic device, the observation box is located in the constant-temperature box, and a saline solution kit and a temperature and humidity sensor are arranged on the inner wall of the observation box; an upper refrigerating table and a lower refrigerating table are arranged in the observation box, the upper refrigerating table is connected with a telescopic device, a fixing device is arranged below the upper refrigerating table, a weight sensor is arranged on the lower refrigerating table, the upper refrigerating table and the lower refrigerating table are connected with an external circulating device through pipelines, an observation device is further connected outside the constant-temperature box, and a rock slice sample is placed on the fixing device. And another rock slice sample is placed on the weight sensor. The device has the advantages that the frosting process of the vaporous water in the fractures of the frozen rock is monitored in real time, and when the device is used for researching frosting of the vaporous water in the fractures of the frozen rock, the device has the characteristics of accurate environmental condition control, sample replacement, real-time monitoring and the like.

The application provides a bridge component anti-icing performance test method and equipment, and the system realizes multivariate simulation test on the bridge cable icing process through integration of an adjustable angle support, a test piece refrigeration bin, an ice water control module and an automatic spraying module. The method comprises the following steps: recording initial parameters of the test piece, establishing a simulated freezing rain environment, performing a cyclic spraying test, measuring icing state parameters, and calculating and evaluating a comprehensive anti-icing index based on an equivalent icing amount, an anti-icing delay coefficient and an environmental correction factor. The application can solve the technical problems of low test efficiency, high cost and lack of evaluation method in the prior art.

The invention belongs to the technical field of experimental equipment, and relates to a frosting experiment table and method. The device comprises an air duct cavity, an axial flow fan, a flow equalizing plate, a camera unit, a heat exchanger, a temperature monitoring and adjusting unit, a humidity monitoring and adjusting unit, an air speed and air pressure monitoring unit and a rotation driving unit, and can accurately and stably simulate complex and changeable actual working conditions including frosting conditions under different temperature, humidity, air speed, air pressure and air direction conditions. Meanwhile, key parameters such as temperature, humidity, wind speed, wind pressure and frosting thickness in the frosting process can be comprehensively obtained, the accuracy and timeliness of experimental data can be improved, and reliable data support is provided for frosting research. In addition, due to the introduction of the camera shooting unit, the experiment table can record microscopic changes in the frosting process, and visual and accurate image data are provided for deep analysis of a frosting mechanism.

The invention relates to a condensate water testing method and device, and relates to the technical field of batteries. The technical problem of how to detect the condensate water prevention capability of the battery in related technologies is at least solved. The method comprises the steps that a first preset temperature is obtained, the environment temperature of the battery pack is adjusted to be the first preset temperature, and the first preset temperature is smaller than or equal to a preset temperature threshold value; under the condition that the environment temperature is the first preset temperature, charging and discharging the battery pack, and controlling the battery pack to be in a vibration state in the process of discharging the battery pack; when the battery pack is in a vibration state, condensed water drops in the battery pack can be gathered; under the condition that charging and discharging of the battery pack are completed, condensate water detection is conducted on the battery pack, a detection result is obtained, and the detection result is used for indicating whether condensate water is generated in the battery pack or not. Therefore, the condensate water prevention capability of the battery can be detected.

An electronic device may comprise: a case made of a metal material; a circuit board positioned on a surface of the case; a dew condensation sensor which includes a pair of sensor electrodes formed on the circuit board while forming a predetermined gap therebetween and detects dew condensation formation when a current flows between the sensor electrodes; and a control part for locking to prevent driving when the dew condensation sensor detects dew condensation, and may prevent malfunction or damage of components by detecting the dew condensation in an early stage.

Provided are a real-time spectrum testing device for a volatile condensable material in a wide temperature range and a spectrum testing method by using the device. The device includes a testing module, a vacuum module, a temperature control module, and a spectrometer, where the testing module includes a testing cabin (5), a replaceable standard testing lens (2), and a stage (3); two infrared perspective windows (1) are symmetrically installed on two opposite side walls of the testing cabin (5); the vacuum module includes a vacuum inner cavity (8) and a vacuum system (4); the vacuum inner cavity (8) is installed in the testing cabin (5) in a thermally insulated manner and connected to the vacuum system (4); the stage (3) and the standard testing lens (2) are installed in the vacuum inner cavity (8); the temperature control module includes a refrigeration system (7) and a temperature control system (6).

The invention discloses a method and a device for driving a sample at a high speed to carry out dynamic cooling heat exchange research, and the method comprises the following steps: 1) heating the sample according to cooling heat exchange research requirements to obtain a sample temperature (initial cooling temperature); (2) the heated sample does annular motion, at least one cooling device is arranged along the annular track, and the sample is cooled till the set final cooling temperature is reached; the movement speed of the sample and the flow and pressure of a cooling medium of a cooling device are monitored and obtained in real time in the cooling process, and the temperature instantaneous value of the sample in the whole cooling process and the cooling time required from the initial cooling temperature to the final cooling temperature are measured through thermocouples embedded in the surface and the interior of the sample; (3) testing the performance of the sample; and (4) repeating the steps (1)-(3), obtaining a time-temperature drop curve and a performance result of the sample according to the measured data, and determining cooling process parameters of which the performance meets requirements. According to the invention, the dynamic cooling process of the metal sample at various speeds, especially in a high-speed motion state, can be researched.

The invention provides a visual experiment system based on nanometer steam condensation, and belongs to the technical field of condensation heat exchange, the visual experiment system comprises a steam circulation module, a water circulation module, an experiment cavity, a vacuum pump and a condensation pipe, the condensation pipe is installed in the experiment cavity, the condensation pipe is connected with the water circulation module, and the vacuum pump is connected with the condensation pipe. The steam circulation module comprises a steam generator and a nano-particle blender, water is contained in the steam generator, nano-particles are contained in the nano-particle blender, and the steam circulation module is used for mixing steam generated by the steam generator with the nano-particles and then introducing the mixture into the experiment cavity; compared with condensation phase-change heat transfer outside a pipe of a traditional working medium, the condensation mode of the steam containing the nano particles and the deposition condition of the nano particles on the condensation wall surface outside the pipe are researched, and the heat transfer performance of condensation phase-change heat transfer is improved according to the characteristics. Therefore, energy conservation and consumption reduction are realized.

The present invention proposes a submarine separated gravity heat pipe test device and a test method thereof. The submarine separated gravity heat pipe test device includes a heat source mechanism, a cooling mechanism, and a testing mechanism. The cooling mechanism includes a seawater tank and a chiller and a seawater circulation pump connected thereto via a pipeline. During the condenser test, the condenser is located inside the seawater tank, and the bottom end surface of the seawater tank is located above the top surface of the evaporator. The heat source mechanism includes a freshwater pump, a freshwater tank, and a first heating device connected to the evaporator's circulating water channel via a pipeline. The testing mechanism includes a temperature sensor and a flow meter installed on the heat source mechanism and the cooling mechanism pipeline. The submarine separated gravity heat pipe test device can simulate the actual installation state of the separated gravity heat pipe on a boat and the seawater headflow environment around the outboard condensing end. It can be used to carry out onshore bench tests such as variable operating condition performance tests and startup characteristic tests of the submarine separated gravity heat pipe, thereby facilitating the design and installation of submarine separated gravity heat pipes.

A method and a device for realizing an infinitely long cooling area at any workpiece speed comprise the following steps: 1) heating a sample according to cooling heat exchange research requirements to obtain a sample temperature, namely an initial cooling temperature; (2) the mode that an annular track is combined with a trolley is adopted, the heated sample does annular motion, the annular track is an oval track comprising two straight line segments arranged in parallel, a cooling device is arranged along the straight line segments, and the sample is cooled to the set final cooling temperature; the movement speed of the sample, the flow and the pressure of a cooling medium of a cooling device, temperature instantaneous values of the sample in the cooling process measured by thermocouples pre-embedded in the surface and the interior of the sample, and the required cooling time from the initial cooling temperature to the final cooling temperature are obtained through real-time monitoring in the period; (3) testing the performance of the sample; and (4) repeating the steps (1)-(3), and determining cooling process parameters of which the performance meets requirements according to the temperature drop curve and the performance result of the sample. According to the invention, the dynamic cooling process of the sample at various speeds, especially in a high-speed motion state, can be researched.

The invention relates to the technical field of steam quality detection, in particular to a full-automatic steam quality detection method, and the detection process comprises the following steps: S1, introducing to-be-detected steam; s2, reducing the pressure of the steam to be measured to atmospheric pressure and calculating the degree of superheat; s3, steam is heated to superheated steam and then condensed, and non-condensable gas and condensed liquid are generated; s4, calculating the content of non-condensable gas and the content of moisture in steam; and S5, outputting a calculation result, and completing detection. The tediousness of steam quality detection is simplified; the calculation result precision is improved, and the measuring device is simplified.

The invention relates to a method and device for measuring the dew point of humid gases, and more particularly to determining the humidity of gas mixtures according to the dew point, and can be used in all fields in which measurements of this sort are required. The claimed device is capable of determining a dew point in a range of from +45°C to +95°C, which corresponds to a moisture content of from 65 to 3000 g of water per 1 kg of dry air. The device performs continuous measurement. The essence of the invention is that the claimed method for measuring dew point consists in determining the point of a sudden change in the temperature gradient along a tubular cooler through which the humid gas under examination is passed, and calculating the temperature at which this change takes place. The tubular cooler is cooled by the surrounding air. The device has a generator for generating an output signal that transmits information about the parameters of the gas to external systems and that can be used as an input signal for a moisture content regulator. The device can be equipped with a digital indicator for displaying the gas parameters obtained.

The invention provides a method and equipment for testing the anti-icing performance of a bridge member, and the system achieves the multivariable simulation test of the icing process of a bridge cable through integrating an angle-adjustable support, a test piece refrigeration bin, an ice water control module and an automatic spraying module. The method comprises the following steps: recording initial parameters of a test piece, establishing a simulated freezing rain environment, executing a cyclic spraying test, measuring icing state parameters, and calculating a comprehensive anti-icing index based on an equivalent icing amount, an icing delay coefficient and an environment correction factor for evaluation. The technical problems that in the prior art, anti-icing performance testing is low in efficiency and high in cost, and evaluation methods are lacked can be solved.

The present application provides a blowout preventer and a water content testing device, belonging to the field of petrochemical technology. The blowout preventer comprises: a blowout preventer cover, a return pipe, and a collecting sleeve; the bottom of the blowout preventer cover is sealedly connected to the top of the collecting sleeve, a return pipe is provided in the collecting sleeve, the oil outlet at the top of the return pipe is suspended in the collecting sleeve, and the oil inlet at the bottom of the return pipe is connected to the oil outlet of the water content testing device through the through-hole at the bottom of the collecting sleeve; the return pipe is used to reduce the flow rate of crude oil sprayed into the water content testing device through the oil inlet of the return pipe, and to transfer the crude oil to the collecting sleeve through the oil outlet of the return pipe; the collecting sleeve is used to collect crude oil. Since the blowout device can effectively prevent crude oil from being directly sprayed out of the water content testing device, thereby preventing the sprayed crude oil from causing burns to the surrounding experimenters, the safety of the water content testing device is improved.