69results about "Material condensation" patented technology

The invention relates to a device for evaluating internal condensation characteristic of an enhanced heat transfer pipe. The device mainly comprises a steam system, a test section, a cold water takingsystem and a data acquisition system, and can evaluate the local condensation heat transfer and pressure drop characteristics of various kinds of steam or mixed gas in different enhanced heat transfer pipes. The steam system comprises a boiler, a precooler, an air compressor, a gas storage tank, a dryer, a gas heater and a static mixer, and can provide pure-component and multi-component steam orair-containing mixed gas needed by the test. The test section comprises a straight pipe measuring section, a condensation section, a measuring section and an observation section which are connected with one another sequentially; an inlet is connected with the steam system; and an outlet is connected with a gas and liquid separator. The two ends of an outer sleeve pipe of each of the precooler andthe test section are connected with one set of water cooling system in parallel. The internal heat transfer coefficient of the enhanced pipe is acquired through a thermal resistance separation method,and basis is provided for thermodynamic design of an efficient pipe shell type condenser.

System and methods for determining a non-condensable gas parameter relating to the amount of non-condensable gas within a variable flow rate fluid flow containing both non-condensable gas and condensate are disclosed. An apparatus may include a measurement tube for receiving the fluid flow and arranged such that the fluid flow through the measurement tube comprises alternating sections of non-condensable gas and condensate; a flow sensor for generating a flow rate signal relating to the flow rate of the fluid flow in the measurement tube; a phase sensor for monitoring over time the alternating sections of non-condensable gas and condensate flowing through the measurement tube and arranged generates a phase signal characteristic of the said sections monitored; and a non-condensable gas determining unit configured to determine a non-condensable gas parameter relating to the amount of non-condensable gas in the fluid flow based on the flow rate signal and phase signal. A related method for determining a non-condensable gas parameter is disclosed also.

The invention relates to a device and a method for testing condensate water formation. The device is used for testing the minimum difference value of surface temperature of a tested sample and given gas temperature when condensate water is formed on the surface of the tested sample by gradually reducing temperature of the tested sample in the given atmosphere environment (atmosphere includes gas temperature, humidity, components and pressure intensity), and the device is further used for testing the maximum duration of keeping condensate-water-free state on the surface of the tested sample under the circumstance that temperature of the surface of the tested sample and the given atmosphere conditions are determined. The invention particularly relates to application verification of a material and a mechanical product and service reliability evaluation, in particular to the method for measuring limit temperature difference when the condensate water is formed on bare surface due to temperature difference between the material or the product and the experiment environment in the simulation test environment with controllable temperature, humidity, atmosphere and pressure intensity or evaluating service reliability of the material or the product and the testing device.

The invention discloses a visual microenvironment constant-temperature and constant-humidity box for interface heat transfer and mass transfer research. A temperature sensor placement hole and a temperature and humidity air supply inlet are formed in the left side wall of an upper cover; a humidity sensor placement hole, a temperature and humidity air supply outlet and an infrared window are formed in the right side wall of the upper cover; the temperature and humidity air supply inlet and the temperature and humidity air supply outlet are connected with constant-temperature and constant-humidity box pipelines; the bottom edges of the front side wall and the rear side wall of the upper cover are provided with cold and hot fluid thermal insulation pipe U-shaped clamping grooves; a microscopic observation cover plate is arranged on a top plate of the upper cover; a reserved microscope lens hole is formed in the cover plate; a thermocouple and a humidity sensor are mounted in the box; a table is arranged on a bottom plate in the box; a thermal insulation pipe is arranged in the table to convey cold and hot fluids; the thermal insulation pipe penetrates through the cold and hot fluid thermal insulation pipe U-shaped clamping grooves; and a clamping groove mounting experiment flat plate is arranged at the upper part of the table. According to the box, the liquid drop condensation and crystallization processes under the influence of temperature and humidity in the interface heat transfer and mass transfer process can be observed in real time.

The invention belongs to the fields of equipment and a method used in atmospheric physics and artificial influence weather research, and particularly relates to a water drop freezing nucleus measuringdevice and an experimental method. The water drop freezing nucleus measuring device comprises a condensation plate, a nanometer superhydrophobic coating, a supporting body, a CCD camera and a microcomputer, wherein the supporting body is arranged on the condensation plate; the supporting body and the condensation plate together define an experimental chamber; the supporting body is provided witha protective gas inlet formed in one side of the experimental chamber and is provided with a protective gas outlet in the other side of the experimental chamber; the nanometer superhydrophobic coatingis arranged on the condensation plate and is positioned on the contact surface of the condensation and the supporting plate; the CCD camera is arranged at the upper end of the supporting body and ispositioned at the upper end of the experimental chamber; the CCD camera is connected with the microcomputer; the microcomputer can acquire information stored in the CCD camera; the condensation plateis connected with the microcomputer; the microcomputer can control cooling of the condensation plate and can accurately acquire the temperature change of the condensation plate. The measuring accuracyand precision of the water drop freezing nucleus can be effectively improved.

An analyser for collecting and analysing a breath condensate is disclosed. The analyser comprises a housing and a cartridge device (10). The device comprises a condensation zone (12) to condense exhaled breath from a subject and cooling means operably connected to the condensation zone (12). The device includes further discrete regions (13) for detection of analyte and measurement of analyte. The condensation zone (12) has a fluid exit connecting the condensation zone (12) to the discrete regions (13). The analyser includes a mouthpiece which is provided with a plurality of chambers configured to cause a change of 90° in the direction of the exhaled breath in order to trap saliva aerosols.

The invention belongs to the field of detection on physical and chemical characteristics of petroleum products, and particularly relates to a reduced-pressure micro-distillation system for biomass-based blended fuel. The reduced-pressure micro-distillation system comprises a distillation device, a vacuumizing device, a cooling device and a recycling device. The distillation device is individually isolated by a partition plate and comprises a distillation flask, the bottom of the distillation flask is matched with a clamp table, a heater is arranged on the top of the clamp table and clings to the bottom of the distillation flask, the distillation flask is communicated with a sample bottle via a feed pipe with a pump, and the top of the distillation flaks is communicated with a distillation head. The reduced-pressure micro-distillation system has the advantages that the reduced-pressure micro-distillation system is simple in structure and high in external interference resistance, distillation range data of the biomass-based blended fuel can be quickly and accurately measured by the reduced-pressure micro-distillation system, and vapor pressure data of the fuel can be obtained by the reduced-pressure micro-distillation system.

The invention discloses a method for detecting sulfur dioxide and nitrogen oxides in a high-moisture-content flue gas, and relates to the technical field of air pollutant detection. The method comprises the following steps: (1) sampling of flue gas: connecting an exhaust gas generated after burning of a boiler with three sampling tubes through a flue gas sampler in series, and temporarily storingin the three sampling tubes; (2) determination of moisture content of flue gas; (3) preparation of absorption liquid; (4) determination of nitrogen oxide content; determination of sulfur dioxide content; (6) result accounting. The method has the advantages of improving analysis efficiency and saving detection time.

The invention relates to the technical field of LNG tanks, and in particularly to a cold inspection test device and method for an insulating layer of an LNG marine tank, and the cold inspection test device for the insulating layer of the LNG marine tank comprises the following parts of a low temperature medium container used to storage a low temperature medium having a boiling point less than or equal to minus 163 DEG C; a first branch, of which the inlet end is communicated with the low temperature medium container, and the outlet end is communicated with the LNG tank, wherein the first branch is provided with a vaporizer and a first regulating valve, the vaporizer is used to vaporize a liquid low temperature medium into a gas low temperature medium, and the first regulating valve is communicated with the output end of the vaporize to control the transmission of the gas low temperature medium flowing in the first branch; and a second branch, of which the inlet end is communicated withthe low temperature medium container, and the outlet end is communicated with the LNG tank to transmit the liquid low temperature medium to the LNG tank, wherein the second branch is provided with asecond regulating valve used to control the transmission of the liquid low temperature medium flowing in the second branch. The cold inspection test device and method provided by the invention facilitate the technical personnel to effectively detect the insulating layer of the LNG tank.

The invention discloses a deicing method which is applied to an ice maker. The ice maker comprises an evaporation temperature sensor for detecting the temperature of an ice tray and a condensation temperature sensor for detecting the condensation temperature. The method comprises the following steps: acquiring an evaporation temperature of an ice tray working environment for a certain number of times according to a first condensation temperature after acquiring a deicing program starting signal, wherein the evaporation temperature is acquired through the evaporation temperature sensor; and outputting a deicing termination operation signal when the difference between the highest temperature and the lowest temperature in the obtained set number of evaporation temperatures is smaller than a threshold value. The deicing time node is more accurate, the ice production of the ice maker is improved, and energy is saved.

The invention relates to testing equipment for black wood. The testing equipment comprises a cooling tank, wherein a discharge opening is formed in the lower end of the cooling tank; a cooling water pipe is arranged on the outer side of the cooling tank; a heating tube is arranged at the upper end of the cooling tank and comprises an inner tube and an outer tube; the inner tube is communicated with the cooling tank; heaters are arranged between the outer tube and the inner tube; a stirrer is arranged in the inner tube and is connected with a rotating motor through a rotating shaft; the rotating motor is arranged on a support of the heating tube; the upper end of the inner tube is connected with a condensing pipe and a screw feeder; the condensing pipe is connected with a condenser; the screw feeder is connected with a hopper. The detecting equipment for the black wood can be used for detecting whether the content of impurities in the black wood reaches the standard or not, so that thequality of a black wood product can be ensured.

The invention discloses a visualization experiment system and device for testing separation characteristics of condensation water and belongs to the technical field of air condition heat exchanger. The system includes a combined air condition system, a condensation water visible testing unit, an air flow measurement unit and a frozen water system. The combined air condition system is used for performing filtration and heat-wet treatment on air in an entrance and then sending the air to a sample machine testing segment so as to meet requirements of experiment conditions. The condensation water visible testing unit is used for utilizing an endoscope for photographing a separation process of condensation water on heat exchange fins of the sample machine testing segment and recording pressure, temperature and humidity of the sample machine testing segment before and after the separation process. The air flow measurement unit is used for utilizing a flow nozzle and an electric micromanometer for testing air flow in the testing experiment condition. The frozen water system is used for utilizing a circulating water pump for conveying frozen water in a constant low temperature water bath into the experiment sample machine so as to take way heat of the sample machine. According to the invention, visible testing and thermo-technical characteristic testing of the separation process of condensation water in a heat exchange channel can be realized conveniently.

The invention belongs to the technical field of crude oil detection devices, and especially relates to an automatic crude oil water content measuring instrument. The automatic crude oil water content measuring instrument comprises a condenser tube, a receiver is arranged under the condenser tube, and a flask is arranged under the receiver. The flask is characterized in that a magnet conductive layer is sintered on the bottom of the flask and the flask is arranged on a high frequency electromagnetic heater. The provided automatic crude oil water content measuring instrument has the advantages that the flask is directly heated, the conventional mode that a flask is heated by a heating body is changed, the heating body does not have any waste heat, thus the heating body does not need to be cooled individually; during the heating process, the oil drop falling is not dangerous, fire and explosion are avoided, the instrument is safe, energy-saving, and environment-friendly; the burst height of oil gas in the condenser tube can be precisely controlled during the sample preparation process, manual intervention is not needed, and the sample burst will never happen.

The invention discloses a wall internal condensate water detection system based on the Internet of Things technology. The system comprises a building external envelope structure, a humidity sensor, a data processing unit and an Internet client, wherein the humidity sensor detects humidity of the maintenance structure outside the building, the data processing unit processes data of the humidity sensor and transmits the processed result to the Internet client through the Internet of Things technology, and a user can carry out real-time monitoring at the Internet client. According to the system, 24-hour all-weather detection of the content of condensed water in the building wall can be realized, guarantee is provided for safety of a building, and defects in the prior art are effectively overcome.

The invention discloses a cold experiment method of a solidification process and belongs to the technical field of continuous casting of steel. The cold experiment method of the solidification processcomprises the steps as follows: firstly, side walls of an experiment tank of an experiment device are heated; hot water in a hot water tank is pumped into a heat exchange tank by a first water pump through a pipeline, and hot water in the heat exchange tank performs heating and heat insulation on a metal plate; when the temperature of the metal plate, the side walls of the experiment tank and a bottom plate is not lower than that of an experiment solution, the experiment solution is poured into the experiment tank; hot water in the heat exchange tank and the pipeline is drained; cold water ina cold water tank enters the heat exchange tank through a pipeline, cold water in the heat exchange tank cools the metal plate, the experiment solution crystallizes and precipitates on the surface ofthe metal plate, and the crystallization process is observed by an observation instrument. The method can simulate crystallization and segregation behaviors of molten steel in the solidification process.