24 results about "Heat measurement" patented technology

1. Name of the product in this design: Mechanical Heat Meter (ZYT-RLM). 2. Purpose of this design: for heat measurement. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to a gas phase chemical reaction heat measurement system and method based on a heat flow method calorimeter (RC1e type). An inert medium and a small gas phase reactor are additionally arranged in a reaction kettle of an original heat flow method calorimeter, a gas raw material is introduced into the gas phase reactor for reaction, and heat released by the reaction is transferred to a calorimetric system through the inert medium for real-time monitoring. The method solves the problem that a traditional heat flow method calorimeter cannot directly measure gas-gas reaction heat, the application range of the calorimeter is expanded, and the method is suitable for gas-phase reaction thermodynamic research and process safety evaluation under high-temperature and high-pressure conditions.

The utility model relates to the technical field of cement hydration heat measurement, and particularly discloses a cement hydration heat measurement device which comprises a measurement tank, and a feeding pipeline and a discharging pipeline are respectively arranged at the top and the bottom of the measurement tank; the thermometer is arranged on the wall surface of the measuring tank and is used for detecting the temperature in the measuring tank; the stirring mechanism is used for stirring the mixture in the measuring tank; comprising a power part arranged outside the measuring tank, a stirring shaft which is rotatably connected in the measuring tank and is driven by the power part, a plurality of first stirring blades which are vertically arranged on the stirring shaft in a staggered manner, and a plurality of second stirring blades which are arranged at the end parts of the first stirring blades and scrape along the inner wall of the measuring tank. Part of cement is easy to adhere to the inner wall of the measuring tank, so that the mixing is not uniform.

This invention relates to the field of aircraft fire resistance testing technology, and discloses a device, system, and method for acquiring the surface heat flux density of a fire-resistant test specimen. The system initialization includes: total heat flux measurement (obtaining the theoretical total heat flux value q0); actual pure radiative heat measurement (setting a glass cover around the heat flux sensor without changing its position, shielding convective heat through the glass cover, and then collecting the theoretical radiative heat flux value q1 measured by the heat flux sensor); and multiplying the pre-measured emissivity of the test specimen surface by the theoretical radiative heat flux value q1 to obtain the actual pure radiative heat flux value q. r Actual heat flux calculation: Actual convective heat value q c The actual heat flux q is obtained by subtracting the theoretical radiative heat flux q1 from the theoretical heat flux q0. a Equal to the actual pure radiative heat flux value q r and actual convective heat value q c The sum of radiative heat and convective heat is achieved through precise measurement of these two heat sources under actual aircraft fire conditions, providing high-fidelity, multi-scenario, and highly consistent thermal flow data for twin experiments.

This invention provides a means to perform differential scanning calorimetry analysis more cost-effectively, simply, and quickly. [Solution] A system for simultaneous thermal analysis of multiple single samples, particularly biological materials, by differential scanning calorimetry (DSC) comprises a sample carrier having multiple sample containers, each sample container assigned a single sensor for measuring the amount of heat released or absorbed from a single sample during thermal analysis; a heating and / or cooling unit having a receptacle for the sample carrier and for simultaneously applying temperature load to the single samples contained in the sample containers; and a measuring instrument connected to a single sensor and configured to simultaneously acquire measured values ​​of the amount of heat released or absorbed by a single sample during thermal analysis. Furthermore, a sample carrier for use in this system and a method for simultaneously analyzing a single sample or a group of single samples by differential scanning calorimetry (DSC) are provided.

The invention discloses an oil-gas-water-sand multi-phase measurement combined experiment system which comprises a gas path pressurization heating measurement unit, a water path pressurization measurement unit, an oil path pressurization heating measurement unit and a solid-phase path particle feeding control unit which are arranged in parallel, and an outlet of the gas path pressurization heating measurement unit is connected with a gas phase inlet of a mixer; an outlet of the solid-phase path particle feeding control unit is connected with a solid-phase inlet of the mixer, an outlet of the mixer is connected with an inlet of the experiment section, an outlet of the experiment section is connected with an inlet of the backpressure adjusting section, and an outlet of the backpressure adjusting section is connected with an inlet of the backpressure adjusting section. An outlet of the connecting backpressure adjusting section is connected with an inlet of the split-phase measuring section, the connecting backpressure adjusting section comprises two backpressure adjusting valves, and an outlet of the split-phase measuring section is connected with a recovery device. The invention further discloses a working method of the experimental system. According to the experiment system and the working method, the problems that an existing multiphase flow experiment system is limited in application range and single in function are solved.

The invention discloses a heat-proof material high-wall temperature heat flow measurement test device and method. The invention relates to a heat-proof material high-wall-temperature heat flow measurement test device, which comprises a test piece bearing unit, a high-frequency induction heating unit, a test section cabin body, a first heat measurement unit and a second heat measurement unit, the heat-proof material high-wall-temperature heat flow measurement test method comprises the following steps that S1, a high-frequency induction heating unit discharges, electromagnetic coupling heating is conducted on a gas medium, ionization is conducted to form plasmas, and the plasmas form stable plasma flow to be emitted to a test piece bearing unit; s2, continuing the step S1 until the surfaces of the two sides of the test piece reach radiant heat balance; and S3, the conduction heat flow qc of the side, located on the inner surface of the shell, of the test piece and the conduction heat flow qr of the side, located on the outer surface of the shell, of the test piece are measured, the total heat flow qt when the surfaces of the two sides of the test piece reach heat radiation balance is calculated, and qt = qc + qr. The heat-proof material high-wall temperature heat flow measurement test device and method have the advantages of being high in measurement accuracy and high in data collaboration.

A heat measurement device and method for simulating a high-flow-rate pressure grouting whole process of a mining material. The heat measurement device for simulating a high-flow-rate pressure grouting whole process of a mining material comprises a thermal insulation tank (1), a coal sample tank (2), a pressure grouting cavity (3), a side temperature sensor (4), and a bottom temperature sensor (7). The heat measurement method for simulating a high-flow-rate pressure grouting whole process of a mining material comprises: checking the air tightness of the thermal insulation tank (1), the coal sample tank (2), the pressure grouting cavity (3) and a connecting pipeline, and measuring the temperature; loading a coal sample into the coal sample tank (2); presetting grouting data; starting an external material supply unit, and carrying out pressure grouting construction; collecting data; and turning off an apparatus and cleaning the apparatus. In the present device, a coal sample is loaded in the thermal insulation tank (1) to simulate a coal seam environment, the pressure grouting cavity (3) is reserved in the middle of the coal sample, and a mining material is injected into the pressure grouting cavity (3) by means of the external material supply unit to simulate an underground filling construction process.

The utility model relates to the technical field of heat supply metering, in particular to heat supply metering equipment which comprises a metering instrument, a machine frame is arranged at the front end of the metering instrument, an adjusting assembly is arranged in an inner cavity of the machine frame, two connecting rods are arranged on the adjusting assembly, and two rotating columns are arranged on the two connecting rods. When the heat supply metering equipment is installed, a top plate is extruded through a conveying pipe, so that the top plate drives a rack to slide backwards under the limiting action of a limiting groove and a limiting block, then two gears can drive a rotating column and a clamping plate to rotate to clamp the conveying pipe, and a clamping rod is reset and inserted into a corresponding clamping hole inner cavity under the elastic force action of a spring; the position of the rack is fixed, the angles of the gear, the rotating column and the clamping plate are fixed, the device is installed, and the problems that the installation operation of thermal metering equipment is complex and troublesome, the metering equipment can be installed only by screwing multiple bolts, and a large amount of time needs to be consumed are solved.

The present application provides a kind of surface thermometer measuring and evaluating system and method under the influence of multiple environmental factors, including constant temperature and humidity standard box, constant temperature platform, temperature and humidity measurement module, wind speed measurement module, radiation heat measurement module and control module, the surface thermometer to be evaluated is multiple, temperature sensing end is placed on the isothermal plate, by controlling multiple environmental factor variables, the measurement result of the surface thermometer to be evaluated under multiple environmental factors is obtained.The present application realizes the composite control of temperature, humidity, wind speed, illumination and other factors, realizes the experimental analysis and research on the measurement result of surface thermometer under the influence of multiple environments, and evaluates the measurement performance of surface thermometer under the influence of multiple environmental factors.

The invention discloses an explosion-proof electric cabinet, which is used for an inflammable refrigerant air-conditioning heat balance laboratory dangerous area, and comprises a sealed cabinet body which is arranged in a heat balance laboratory inner room dangerous area, and a positive pressure environment is formed in the sealed cabinet body; the air source is arranged outside the laboratory danger area and outputs compressed air at a first specified temperature into the sealed cabinet body; and / or enabling the sealed cabinet body to maintain a specified gas leakage amount; the temperature adjusting assembly is arranged in the sealed cabinet body, the input power of the temperature adjusting assembly is measured through a power meter, and the cooling amount is measured through a flow meter and a temperature sensor and obtained through conversion. The working states of the air source, the temperature adjusting assembly and all the valves are configured according to the relation between the heat measurement error caused by compressed air and the gas leakage amount in the cabinet, and on the premise that safety is guaranteed, the influence of heat dissipation of electrical elements on the room air conditioner heat balance experiment can be avoided.

The application relates to an arc wind tunnel test coaxial calorimeter heat measurement correction method and system, and belongs to the field of aerodynamic heat test research. n The application can realize accurate measurement of the ground test heat flow of the arc wind tunnel; the arc wind tunnel test coaxial calorimeter heat measurement correction method can be suitable for heat measurement of arc wind tunnel flat plate model test and stagnation point model test, and the heat flow test is suitable for very wide, covering 10kW / m 2 -30000kW / m 2 , and has a wide application range.

This invention discloses a method and related components for measuring the loss of magnetic components, relating to the field of power electronics magnetic technology. The method includes controlling a heater to heat a magnetic component to a preset temperature; determining the temperature difference between the magnetic component and a heat spreader on its surface; controlling an excitation source to excite the magnetic component; controlling the power of the heater to decrease to maintain a constant temperature difference; and determining the power reduction of the heater, where the power reduction is equal to the power loss of the magnetic component. When the excitation source excites the magnetic component, the loss of the magnetic component is dissipated as heat. The increased temperature of the magnetic component increases the temperature difference between it and the heat spreader. By controlling the power of the heater to decrease, and under the condition of a constant temperature difference, the power reduction of the heater is equal to the power of the magnetic component. This allows for the determination of the power loss of the magnetic component without considering its electrical characteristics. Measuring the loss using the heat generated by the magnetic component yields more accurate results.

The utility model relates to the technical field of heat meters, in particular to a heat meter with a flow monitoring function, which comprises a turbine flowmeter, two ends of the turbine flowmeter are respectively connected with a water inlet pipe and a water outlet pipe through detachable connection, and a meter body shell is fixed on the turbine flowmeter through detachable connection. A microprocessor electrically connected with a magnetoelectric sensor of the turbine flowmeter is fixed in the meter body shell, ultrasonic flow sensors are fixed on the water inlet pipe and the water outlet pipe, and a temperature sensor is fixed at one end, close to the turbine flowmeter, of each of the water inlet pipe and the water outlet pipe; and the power supply module supplies power to the electric energy meter. The device has the advantages that flow monitoring is carried out in the mode that the turbine flow meter and the ultrasonic flow sensor are combined, the accuracy and reliability of flow measurement are improved, the flow monitoring requirements under various complex working conditions can be met, and a powerful guarantee is provided for accurate heat metering.

This invention relates to an online system for determining flue gas thermal energy and a method for assessing its recovery value, belonging to the field of flue gas heat measurement and heat recovery technology. It solves the problem that existing methods cannot achieve online, real-time, and direct measurement of flue gas thermal energy. The system includes a flue gas parameter measurement unit, a signal acquisition and processing unit, and a thermal energy calculation and display unit. The flue gas parameter measurement unit includes a flue gas acquisition chamber, a flue gas temperature sensor, an ambient temperature sensor, and a flow measurement device. The signal acquisition and processing unit calculates the flue gas heat flow and waste heat quality using the received ambient temperature, flue gas temperature, and flue gas flow rate. The thermal energy calculation and display unit calculates and displays the real-time thermal energy using the received heat flow and waste heat quality. This invention also provides a method for assessing the recovery value based on real-time flue gas thermal energy, determining the waste heat recovery value by comparing the real-time thermal energy value with the critical thermal energy value. This invention is applicable to the assessment of the thermal energy value and recovery value of materials after combustion.

A heat measurement device and method for simulating a high-flow-rate pressure grouting whole process of a mining material. The heat measurement device for simulating a high-flow-rate pressure grouting whole process of a mining material comprises a thermal insulation tank (1), a coal sample tank (2), a pressure grouting cavity (3), a side temperature sensor (4), and a bottom temperature sensor (7). The heat measurement method for simulating a high-flow-rate pressure grouting whole process of a mining material comprises: checking the air tightness of the thermal insulation tank (1), the coal sample tank (2), the pressure grouting cavity (3) and a connecting pipeline, and measuring the temperature; loading a coal sample into the coal sample tank (2); presetting grouting data; starting an external material supply unit, and carrying out pressure grouting construction; collecting data; and turning off an apparatus and cleaning the apparatus. In the present device, a coal sample is loaded in the thermal insulation tank (1) to simulate a coal seam environment, the pressure grouting cavity (3) is reserved in the middle of the coal sample, and a mining material is injected into the pressure grouting cavity (3) by means of the external material supply unit to simulate an underground filling construction process.

The invention relates to the field of vacuum glass detection, and discloses a vacuum glass on-line rapid detector, which comprises a measuring assembly and a constant temperature assembly which are respectively positioned on two sides of vacuum glass and are coaxial, the measuring assembly is provided with a vacuum chuck and a measuring probe, and the vacuum chuck forms a vacuumizing cavity on one side of the glass; the constant-temperature assembly continuously outputs constant heat on the other corresponding side, and the measuring probe is located in the middle of the vacuumizing cavity to detect the temperature and transmit the temperature to the temperature measuring and controlling system. The measuring probe is in a vacuum environment by means of the vacuumizing cavity, so that the heat interference of ambient air is thoroughly blocked, and the measurement accuracy is greatly improved; the invention further provides a detection method adaptive to an online production scene, the period is shortened through rapid temperature detection in a vacuum environment, the cycle of a production line can be matched, full-batch online detection is achieved, and the problems that traditional offline sampling detection is low in efficiency and high in missing detection risk are solved.

1. The name of the design product: Micro calorimeter (DMC-196). 2. The use of the design product: For heat measurement in low temperature environment, can analyze the thermal effect of sample under lower than room temperature condition. 3. The design points of the design product: In shape. 4. The picture or photo that can best show the design points: perspective view 1.

The present application belongs to the field of hot water tank heat measurement, discloses a kind of effective capacity determination method of hot water tank added in cogeneration unit, and the effective capacity of hot water tank can be accurately determined according to real working condition by step-by-step quantitative calculation of key parameters such as heat load, peak shaving duration, heat storage efficiency and supply and return water temperature difference.First, by quantifying the average heat load of the heating period and the typical peak shaving or peak duration, the heat storage demand can be closely matched with the actual operating load, avoiding the use of traditional estimation method with large safety factor, reducing the capacity configuration from the source. The present application introduces the heat loss parameter of the hot water tank, and includes the inevitable heat loss in the energy storage process into the calculation, so that the final effective daily heat storage is closer to the real available value, thereby avoiding the insufficient effective capacity caused by ignoring the loss and improving the sustainable heating capacity of the unit during peak shaving and peak period.

The invention provides an electromechanical equipment heat dissipating capacity measuring device and method, and relates to the technical field of heat measurement, and the electromechanical equipment heat dissipating capacity measuring method comprises the steps: starting an air blower and a simulation heat source; after the heat dissipating capacity measuring device reaches a balanced state, judging whether the power deviation between the actual test power of the heat dissipating capacity measuring device and the set power of the simulated heat source is within 10%, if so, carrying out an electromechanical equipment heat dissipating capacity measuring experiment, closing the simulated heat source, starting the electromechanical equipment to be measured, and when the heat dissipating capacity measuring device reaches the balanced state, carrying out the heat dissipating capacity measuring experiment. Collecting and recording test data for keeping a balance state for a period of time; and calculating the heat dissipating capacity of the electromechanical equipment to be tested through the collected test data. The heat dissipating capacity measuring device is calibrated, the heat dissipating capacity measuring experiment of the electromechanical equipment is carried out after calibration, the heat dissipating capacity of the electromechanical equipment to be measured is obtained through calculation, collected data are test data which keep a balance state for a period of time, and the accuracy of a calculation result can be improved.

This invention discloses a system and method for measuring the leakage of a steam trap in a thermal system. By installing a heat measurement unit on the drain pipe at the outlet of the steam trap, this unit includes a heat exchanger, a radiator, a circulating pump, and temperature measuring elements at the hot and cold ends of the heat exchanger. By calculating the heat exchanger's heat transfer capacity and applying the principle of heat balance, the leakage flow rate of the steam trap is calculated, thus achieving real-time measurement of the steam trap leakage. This invention has a clear principle, a simple system, strong operability, and facilitates dynamic monitoring of the unit, improving the unit's operating economy. It is an innovative technology applicable to all units with steam traps for energy saving and efficiency improvement.

The application provides a heat measurement switch loss circuit and method suitable for a bottom heat dissipation GaN device, in which the drain of a to-be-measured GaN device T1 and the drain of an auxiliary GaN device T3 are connected to the positive electrode of a voltage source V DC , the source of T1 is connected to the drain of an auxiliary GaN device T2, the source of T3 is connected to the drain of an auxiliary GaN device T4, the sources of T2 and T4 are both connected to the negative electrode of the voltage source V DC , a first node N1 is included between the source of T1 and the drain of T2, a second node N2 is included between the source of T3 and the drain of T4, the two ends of an inductor L are respectively connected to N1 and N2, and a capacitor C DC is connected in parallel to the voltage source V DC . For the bottom heat dissipation to-be-measured GaN device T1, the application selects the top heat dissipation auxiliary GaN devices T2, T3 and T4 when testing by using the heat measurement switch loss circuit, so that most of the loss heat of T1 is on the PCB, and the heat loss measurement precision of the to-be-measured GaN device T1 is improved.

The invention provides an on-site testing device and method for the heat dissipating capacity of large-scale equipment, and relates to the technical field of heat measurement, and the on-site testing method for the heat dissipating capacity of the large-scale equipment comprises the following steps: carrying out general scanning rough measurement on tested equipment by using an infrared thermal imager; dividing measured areas according to the distribution state of the surface temperature of the heat insulation layer, and determining the position of a heat flux density measuring point in each measured area; after the surface of the measured equipment enters a metastable state, recording the measurement result and the measurement time of each heat flux density meter; measuring the temperature distribution of each heat dissipation surface of the measured equipment by using an infrared thermal imager, and recording the infrared measurement time; a temperature sensor is used for measuring the ambient temperature of different heat dissipation surfaces of the tested equipment; and calculating the heat dissipating capacity of each measured area, and summing the heat dissipating capacity of each measured area to obtain the total heat dissipating capacity of the large-scale equipment. According to the method, the equipment surface convective heat transfer coefficient corresponding to each measuring point can be accurately obtained, so that the calculation is more accurate, and the method is suitable for field heat dissipating capacity testing of large-scale equipment.

Each of heat quantity measurement apparatuses 20a to 20c includes a snow receiving plate 22 configured that falling snow piles up thereon, a heater device 25 configured to heat the snow receiving plate until a temperature of the snow receiving plate 22 becomes predetermined target temperature exceeding 0 degrees Celsius, and a heat flux density measurement apparatus (24a to 24d) configured to measure heat flux density transmitted from below to the snow receiving plate 22. A piling snow depth measurement apparatus 14 measures a piling snow depth of snow piling up at a first location 13. A control apparatus 15 computes a quantity of heat spent to melt the snow falling on the snow receiving plate 22, and estimates a piling snow depth at second locations 12a to 12d, based on the computed quantity of heat and the piling snow depth measured by the piling snow depth measurement apparatus 14.