261 results about "Calorimeter" patented technology

The invention provides a control method and device of a mixed gas power generation system, equipment and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: calculating the introduction rate of each target gas based on load operation data, the type of gas introduced into the gas generator set at present, the type of target gas introduced into the gas generator set after a first duration in a combustion stage and the proportion of the target gas, based on the introduction rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the exhaust gas proportion used for heating each target gas is calculated, each target gas is heated based on the exhaust gas proportion, and the temperature value of the gas in the gas generator set is monitored in real time; and regulating and controlling the operation state of the mixed gas power generation system based on the temperature value. The proportion of gas input into the gas generator can be flexibly adjusted, and the energy utilization rate of the system is increased.

The invention belongs to the technical field of new energy lithium battery measurement, and particularly relates to a lithium battery temperature change thermal parameter measurement method and device. Under the condition of considering the heat loss, the specific heat capacity and the anisotropic heat conductivity coefficient of the lithium battery under the temperature change can be synchronously measured through a single experiment, and the test efficiency and the measurement precision are greatly improved. The device is suitable for cylindrical, square, soft package and blade lithium batteries, can perform measurement under various different equivalent heat exchange boundary conditions including air natural convection, heat insulation material wrapping, vacuum, heat insulation calorimeters and the like, is convenient to operate, high in accuracy and high in adaptability, can realize rapid and accurate measurement of thermal parameters of the lithium batteries at different temperatures, and is suitable for popularization and application. And high efficiency and high precision are both considered.

The invention discloses a measurement method for accelerated calorimeter test based on in-situ electrochemical impedance spectroscopy. The measurement method comprises the following steps: applying excitation current to a battery to be detected; measuring the battery to be detected under the current condition through the EIS module to obtain real part impedance and imaginary part impedance under different frequencies; determining phase angles and impedances under different frequencies according to the real part impedances and the imaginary part impedances under different frequencies; the voltage of the battery to be detected at different surface temperatures is collected through the ARC module, and the corresponding temperature rise rate is determined; determining an impedance modulus deviation, a phase deviation, a voltage sharp change deviation and a temperature rise rate deviation according to the phase angles and the impedances under the different frequencies, the voltages under the different surface temperatures and the corresponding temperature rise rates, and generating an error signal; generating a corresponding sampling rate control instruction according to the error signal based on dynamic PID control; and the ARC module adjusts the sampling frequency according to the sampling rate control instruction so as to perform high-precision measurement.

The invention discloses a gas constant pressure specific heat capacity measuring device. Belongs to the technical field of measurement. The gas constant pressure specific heat capacity measuring device comprises a gas source, a recovery gas tank, a gas pipeline, and a calorimeter, a pressure control system, a vacuum pump and a mass flow meter which are communicated through the gas pipeline, wherein the vacuum pump is configured to be connected with the gas source and the recovery gas tank; the calorimeter comprises a vacuum cavity, and a first temperature sensor, a second temperature sensor, a heater and a heating device which are located in the vacuum cavity, and the first temperature sensor, the heater and the second temperature sensor are sequentially connected to a gas pipeline in series according to the gas flow direction and located in the heating device; and the gas pipeline is made of a nickel-based high-temperature alloy material. Therefore, constant pressure specific heat measurement of high-temperature gas of about 800 DEG C can be realized, high-precision temperature measurement and temperature control technologies are adopted, the measurement precision can be improved, and the application range is wide.

The utility model relates to the technical field of testing, in particular to a differential scanning calorimeter which comprises a differential scanning calorimeter, a heating assembly, a display screen and ground feet, the display screen is arranged on one side of the front face of the differential scanning calorimeter, and the ground feet are connected to the positions, close to the four corners, of the lower end of the differential scanning calorimeter. One side, far away from the display screen, of the upper end of the differential scanning calorimeter is connected with a heating assembly, and the heating assembly is composed of a heat insulation cover, a heat insulation sleeve, a handle, a first inner cover, a second inner cover, an inner furnace, an outer furnace, a heat insulation tank, a sealing ring, a heating ring, a sample holder, a soaking block, a sample box and a temperature difference sensor.

The invention provides a system and a method for testing the apparent heat conductivity coefficient of a liquid hydrogen storage tank thermal insulation material. A water cooling coil is arranged on the side wall of a calorimeter, and thermal boundary temperature controllers are arranged on the peripheries of an upper protection cavity, a test cavity and a lower protection cavity; low-temperature thermal boundary temperature control can be achieved through the thermal boundary temperature controller, thermal boundary temperature control over 0 DEG C can be achieved through the water cooling coil, and large consumption of low-temperature working media is avoided. Therefore, the system can measure the apparent heat conductivity coefficient of the thermal insulation material at different thermal boundary temperatures.

The embodiment of the application provides a heat exchange quantity metering method and a controller, a heat exchange quantity metering system and a storage medium, and belongs to the technical field of heat exchange. The method comprises the following steps: obtaining the inlet flow of each inlet pipeline and the outlet flow of each outlet pipeline within a starting time to an ending time, and obtaining the inlet temperature at the starting time and the outlet temperature at the ending time; performing heat exchange quantity calculation according to the inlet flow, the inlet temperature, the outlet flow and the outlet temperature to obtain an initial heat exchange quantity; determining a refrigerant enthalpy value change amount according to the inlet temperature and the outlet temperature; determining a target error proportion according to the refrigerant enthalpy value change amount and the initial heat exchange quantity; if the target error proportion is greater than an error proportion threshold, increasing the ending time, and re-performing error calculation to obtain the target error proportion; if the target error proportion is less than or equal to the error proportion threshold, taking the initial heat exchange quantity as a target heat exchange quantity. The embodiment of the application can realize heat exchange quantity metering of a complex pipeline.

One embodiment includes a respirator system that corrects oxygen sensor measurements, such as measurements derived from an oxygen sensor in a mixing chamber of an indirect calorimeter or oxygen consumption (VO2) monitoring device. In one example, an embodiment determines an inhaled oxygen fraction drift provided by a respirator and corrects a VO2 determination made by the system using a change or rate of change in the inhaled oxygen fraction over time.

The invention relates to the technical field of keel quality identification, in particular to a keel identification method based on differential scanning calorimetry, which comprises the following steps: S1, preparing a keel sample into keel sample powder, putting the keel sample powder into a container, putting the container into a sample measuring pool of a differential scanning calorimeter, and testing under preset conditions; and S2, acquiring a differential scanning calorimetry curve of the keel sample, when the differential scanning calorimetry curve has an endothermic peak within the temperature range of 110-140 DEG C, judging the keel sample as a certified product or a counterfeit product containing at least part of the certified product, and when the differential scanning calorimetry curve does not have an endothermic peak within the temperature range of 110-140 DEG C, judging the keel sample as a counterfeit product. Quality identification of authenticity and adulteration conditions in the keel sample is realized according to whether an endothermic peak appears in a differential scanning calorimetry curve of the keel sample in a temperature range of 110-140 DEG C and according to the peak value of the endothermic peak.

Fluid meter, namely heat quantity meter (1) for recording the quantity of cold and / or heat of a fluid, for installation in a supply line (20) or return line (21) of a fluid piping system, comprising - a connection housing (2), - a measuring arrangement for determining flow rates, - a control and evaluation unit (3) as well as - a first temperature sensor (4) which is intended for installation in the flow line (20) and is intended there for determining the temperature in the flow line (20), - a second temperature sensor (5), which is intended for installation in the return line (21) and is intended there for determining the temperature in the return line (21), - wherein a means for determining the temperature of the connection housing (2) of the fluid meter is provided, - wherein a temperature difference between the temperature of the connection housing (2) of the fluid meter and at least one of the temperatures of the first (4) and second temperature sensor (5) can be determined, wherein the control and evaluation unit (3) determines, on the basis of the determined temperature difference between the temperature of the fluid meter and at least one of the temperatures of the first and second temperature sensors (4, 5), which of the temperature sensors (4, 5) is installed in the supply line (20) or return line (21), wherein the measuring arrangement for determining the flow rate is provided as a means for determining the temperature of the connection housing (2) of the fluid meter, where the temperature sensors (4, 5) are automatically assigned to the flow (20) or return (21), wherein the temperature of the connection housing (2) of the fluid meter is determined on the basis of a temperature-dependent transit time of an ultrasonic signal in the fluid, and wherein a look-up table is provided in which the transit times of the ultrasonic signal in the fluid are stored as a function of the corresponding temperature of the fluid and / or the connection housing (2) of the fluid meter and the temperature to be determined of the connection housing (2) of the fluid meter can be derived from the transit time of the ultrasonic signal and the look-up table.

The application provides a compressor performance test system and a test method thereof, wherein the compressor performance test system comprises a to-be-tested compressor, at least two condensers, at least two calorimeters and a control unit, a temperature sensor, a pressure sensor and an electronic expansion valve are arranged between the inlet of the calorimeter and the outlet of the condenser, and the outlet of the calorimeter and the liquid reservoir are spaced apart to arrange the pressure sensor and the temperature sensor. In the compressor performance test system and the test method thereof provided in the application, two or more sets of calorimeter systems are used to simultaneously obtain refrigerating capacity of two or more evaporation sides and heating capacity of two or more condensation sides, so as to meet the performance test requirements of the compressor with multiple evaporation temperatures and multiple condensation temperatures.

The present invention discloses a method for evaluating the availability of a heater in a shaft seal overflow energy recovery system, comprising the following steps: inputting heater operating conditions; determining the pressure of the gas phase components at the hot flow side inlet; assuming that the limit temperature is the initial value of the hot flow side outlet temperature and the loop count N=0; determining the pressure of the gas phase components at the hot flow side outlet; calculating the steam flow rate at the hot flow side outlet; calculating the heat exchange capacity at the hot flow side; calculating the cold flow side outlet temperature; determining the heat transfer driving temperature difference; calculating the heat exchange capacity of the heat exchanger; if N=0 and the heat exchange capacity difference is greater than 0, the heater is unavailable; otherwise, calculating the absolute value of the relative error in heat exchange capacity; if it is greater than 0.01%, adjusting the hot flow side outlet temperature and setting N=N+1, and recalculating the heat exchange capacity; otherwise, exiting the loop, calculating the flow rates and end difference of each phase at the hot flow side outlet; if all are not greater than the allowable value, the heater is available; otherwise, the heater is unavailable. The present invention can comprehensively and quickly evaluate the availability of the heater in a shaft seal overflow energy recovery system under relatively few known conditions.

The present application relates to the technical field of secondary batteries and specifically provides a separator and a preparation method therefor, a secondary battery and an electric device. The separator includes a porous base film, where the porous base film includes a matrix phase and a filler phase distributed in the matrix phase; in a differential scanning calorimeter test curve of the porous base film, both a melting peak of the matrix phase and a melting peak of the filler phase are included, and a temperature of the melting peak of the matrix phase is higher than a temperature of the melting peak of the filler phase.

The invention provides a control method for realizing waste heat recovery of a circular cooler, which comprises the following steps of: calculating cooling air quantity required by a high-temperature section according to a waste gas temperature set value of the high-temperature section, a heat calculation value of a sintered ore block at a 1 # monitoring point, a heat calculation value of the sintered ore block at a 2 # monitoring point and a waste gas temperature of a low-temperature section; according to the waste gas temperature set value of the medium-temperature section, the heat calculation value of the sinter blocks at the second monitoring point and the heat calculation value of the sinter blocks at the third monitoring point, the cooling air volume needed by the medium-temperature section is calculated; and according to the heat calculation value of the sinter blocks at the 3 # monitoring point and the set average ore temperature and the heat set value of the sinter blocks at the 4 # monitoring point, the cooling air volume required by the low-temperature section is calculated. According to the system, full utilization of waste heat of the high-temperature section, the medium-temperature section and the low-temperature section and the normal cooling effect of the sinter in the circular cooler are achieved, and the triple purposes of controllable sinter cooling, waste heat recycling and frequency conversion electricity saving are achieved.

The invention relates to the field of detection, in particular to a food detection method which can determine heat conduction lag coefficients of a sample to be detected and a reference substance at previous moments for points corresponding to each target moment on a heat flow curve generated by a differential scanning calorimeter. The method comprises the following steps: determining the actual heat conducted to a to-be-detected sample and a reference substance at a target moment according to the heat quantity of the to-be-detected sample and the reference substance, calculating the actual heat flow to correct a heat flow curve, and judging the quality of the food by using the corrected heat flow curve, so that the hysteresis quality of the heat generated by the heater conducted to the sample and the reference substance is fully considered; the heat flow curve obtained through correction according to the method can better show the actual heat characteristics of the sample, and therefore accurate judgment on the quality of the sample can be achieved.

The invention relates to the technical field of release film detection, and discloses a release film weatherability detection device, which comprises a detection box, a control panel, a differential scanning calorimeter, a detection module, an alternate compensation module, a detection screening module and a temporary resistance separation module, the alternate compensation module comprises a high-temperature area and a low-temperature area, release film samples are alternately and circularly detected in the high-temperature area and the low-temperature area, detection temperature fluctuation caused by energy brought in from an opposite area in the sample switching process is eliminated, and defective films are screened through the detection screening module before the release films enter the alternate compensation module to be detected. The temporary resistance separation module is used for detecting and screening out defective goods and automatically separating the defective goods; a rotation track is arranged to be matched with high-temperature short-time and cooling mode circulating detection, hot and cold alternate transfer is achieved, a sample is cooled after high-temperature detection is conducted for a certain time, the continuous high-temperature exposure time of a release film base material layer is shortened, and the situation that jelly seeps and adheres to the detection environment is affected is avoided.

The invention relates to a differential calorimeter for detecting a thermodynamic characteristic variable of a sample, wherein at least one heating element (2) and at least one thermal element (3) as temperature sensor are formed in each case in the form of a coating on the surface of a planar substrate (1) which is formed from a glass, glass ceramic, glass carbon or ceramic material having a thermal conductivity of less than 20 W / (m K).

The present disclosure provides a multi-sample differential scanning calorimeter (DSC) that allows for simultaneous processing of samples to achieve high throughput sample processing. The multi-sample DSC includes a test chamber; a sample cartridge located within the test chamber, wherein the sample cartridge includes a plurality of sample wells arranged at a periphery of the sample cartridge; a plurality of temperature sensors, wherein each temperature sensor measures a respective temperature of a respective sample well; and a processor configured to selectively determine a temperature difference between any two or more of the plurality of sample wells.

The present invention addresses the problem of providing a PTC resistor in which the resistance value can be easily increased within a short time after reaching a certain temperature and the resistance value remains high after the temperature increase. A PTC resistor according to the present invention, which solves the problem described above, comprises conductive particles, a polyolefin-based wax, and a binder resin. With respect to the DSC curve of the polyolefin-based wax, obtained by increasing the temperature from 25°C to 150°C at a heating rate of 10°C / min using a differential scanning calorimeter, the number of melting peaks in the DSC curve is 1 or 2.

The invention discloses a calorimeter and method for FLASH radiotherapy rays. The calorimeter comprises a calorimetric core, a jacket layer and a shielding layer. The calorimetric core is an absorber of FLASH radiotherapy rays, and the calorimetric core is nested in a first space in the jacket layer in a manner that a first interval exists between the calorimetric core and the jacket layer and the calorimetric core and the jacket layer are not in contact with each other; the jacket layer is nested in a second space in the shielding layer in a manner that the jacket layer and the shielding layer have a second interval and are not in contact with each other; no non-gas filler exists in the first interval and the second interval. Through the arrangement, the calorimeter aims to meet the strict requirements of ultrahigh dose rate and millisecond irradiation of FLASH radiotherapy rays, the defects that solid filler hinders heat transfer and increases heat capacity in the prior art are overcome, through the design that three layers do not make contact with each other and are free of solid filling, heat loss and heat conduction lag are reduced, heat is concentrated on the calorimetric core, and the heat loss is reduced. Meanwhile, the overall heat capacity is reduced, the millisecond-level thermal response speed is guaranteed, and high accuracy and traceability of dose measurement are guaranteed.

The invention relates to the technical field of coal quality detection, in particular to a calorimeter software-assisted nested control module and a calorimeter, and the module comprises an identification unit which is used for identifying current time data of a system, time data set according to user demands, and working state data of the calorimeter; the analysis unit is used for determining the influence level of the maintenance operation on the heat capacity of the calorimeter according to the maintenance operation data and the working state data of the calorimeter, and generating a corresponding countdown reminding instruction according to the user configuration requirement and issuing the countdown reminding instruction to the management unit when the influence level is greater than or equal to a target level; and the management unit responds to the countdown reminding instruction, starts countdown from the target countdown moment set according to the user demand and recorded by the identification unit, and reminds the user to execute the corresponding target operation when the countdown is finished. Therefore, the problems that calibration period management depends on manual work and the misjudgment rate is high in the prior art are solved; and the quality control means are fragmented, and the tracing efficiency is low.

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 invention discloses a testing device for an enthalpy-increasing compressor of a flash tank, and relates to the technical field of compressor testing. The system comprises a tested compressor, the head and the tail of the tested compressor are connected in series to a main path test assembly through a refrigerant pipeline, and an enthalpy increasing path test assembly is connected between an enthalpy increasing opening of the tested compressor and the refrigerant pipeline of the main path test assembly; a loop formed by the main path test assembly comprises a condenser, a liquid storage tank, a filter, a first subcooler and a calorimeter which are sequentially connected through a refrigerant pipeline, the condenser is connected with an exhaust port of the tested compressor through the refrigerant pipeline, and the calorimeter is connected with an air suction port of the tested compressor through the refrigerant pipeline. The system is compatible with the conventional performance test of the compressor and the performance test of enthalpy increase with the flash tank, and can independently measure and calculate the flow of an enthalpy increase path; the flash tank is provided with a floating ball liquid level meter for monitoring and measurement, automatic liquid level adjustment and control can be achieved, and when a conventional performance test is switched, liquid refrigerants in the flash tank can be automatically recycled.

The utility model provides a heat insulation acceleration calorimeter furnace body, which relates to the technical field of calorimeter furnace bodies and comprises a calorimeter furnace body, a heat insulation plate is embedded and fixedly connected in the inner wall of the calorimeter furnace body, and a heating plate is fixedly connected on the inner wall of the calorimeter furnace body and close to the top. The inner wall of the top of the calorimeter furnace body is embedded and fixedly connected with a heat flow sensor and a thermocouple temperature sensor, the top of the calorimeter furnace body is provided with a carrier gas pipeline, a reaction gas pipeline, a cooling liquid pipeline, an exhaust pipeline and a pressure balance pipeline at equal intervals, and the surface of the calorimeter furnace body is provided with a furnace mouth. According to the calorimeter furnace, the heat insulation plate is embedded and fixedly connected into the inner wall of the calorimeter furnace body, so that the heat insulation effect of the calorimeter furnace body can be achieved, the effect of reducing temperature dissipation can be achieved, the effect of positioning the whole system in a heat insulation state can be improved, and the accuracy of thermal decomposition thermodynamics and dynamics calculation results is further improved.

To provide a laminated film having improved barrier properties.SOLUTION: There is provided a laminated film comprising a base material layer containing a polyethylene-based polymer and a barrier resin layer, wherein the heat of fusion (ΔH2nd) of the base material layer calculated by the following method is 158.0 J / g or more. (Method) When performing a first differential scanning calorimetry measurement (1st Run) comprising a step of raising a temperature from -50°C to 200°C at a temperature rising rate of 10°C / min, an isothermal step of keeping a temperature at 200°C for 5 minutes, a step of lowering a temperature from 200°C to -50°C at a temperature lowering rate of 10°C / min and a second differential scanning calorimetry measurement (2nd Run) comprising a step of keeping a temperature at -50°C for 5 minutes and a step of raising a temperature from -50°C to 200°C at a temperature rising rate of 10°C / min, in the DSC curve 2 obtained from the second differential scanning calorimetry measurement, the heat of fusion (ΔH2nd) is calculated from the endothermic peak observed in the range of 20°C or more and 160°C or less.SELECTED DRAWING: Figure 1

The utility model provides a crucible packaging tool for a differential scanning calorimeter, which comprises a fixed shell, the bottom end of the fixed shell is connected with a base in a sliding manner, a plurality of lower dies are arranged in the base, and a crucible is arranged on the surface of each lower die; the top end of the fixing shell is slidably connected with a pressing die, a plurality of fixing holes are formed in the pressing die, and upper dies are installed in the fixing holes. The upper die is in threaded connection with the first screw, and the top end of the first screw is clamped in the fixing hole; a rubber pad is mounted between the top end of the upper die and the pressing die; a stamping block is connected into the upper die in a sliding mode, and the stamping block extrudes a crucible cover. A first spring is installed in the upper die, and the two ends of the first spring abut against the first screw and the stamping block correspondingly. The crucible packaging tool for the differential scanning calorimeter has the advantages that a plurality of crucibles can be packaged at the same time, and the packaging effect is good.

The utility model belongs to the technical field of temperature control equipment, and discloses a constant-temperature circulating water tank for a calorimeter. The constant-temperature circulating water tank for the calorimeter comprises a main water tank and an auxiliary water tank, the auxiliary water tank is installed on the side wall of the main water tank, a plurality of first partition plates with holes are arranged in the main water tank from top to bottom, and a water injection opening and an overflow opening are formed in the top of the main water tank and the top end of the side wall of the main water tank respectively. A circulating water outlet and a circulating water inlet are respectively formed in the bottom and the middle of the side wall of the main water tank. According to the constant-temperature circulating water tank for the calorimeter, the auxiliary water tank is embedded in the main water tank, serves as a temporary storage space to store hot water discharged by the calorimeter and is only in small-range contact with normal-temperature water in the main water tank, the water temperature of the water in the main water tank is regulated and controlled by the refrigerating mechanism and the heating element, and cooling of the hot water and storage of the normal-temperature water are isolated; the water treatment efficiency is improved, the time interval between experiments is reduced, and the problems in the background technology are solved.

A computer-implemented method for obtaining a Q10 value for accelerated ageing tests of a product, comprising: obtaining at least one Q10 value of a first product; performing differential scanning calorimetry on the first product; determining the ratio of semicrystalline chain structure to amorphous chain structure present in the product, using the differential scanning calorimeter analysis data of the first product; determining the ratio of semicrystalline chain structure to amorphous chain structure present in a second product using differential scanning calorimetry; predicting the Q10 value of a second material using (i) the Q10 value of the first product, (ii) the determined ratio of semicrystalline chain structure to amorphous chain structure present in the first product, and (iii) the determined ratio of semicrystalline chain structure to amorphous chain structure present in the second product. The disclosure also relates to other inventive methods for determining Q10 values including a method for determining a Q10 value of a product comprising multiple materials, a method for determining a Q10 value by making a comparison with historical Q10 values in a database, and a method using time temperature superposition.