CN108426914A - A kind of determining instrument of thermal coefficient and specific heat capacity - Google Patents
A kind of determining instrument of thermal coefficient and specific heat capacity Download PDFInfo
- Publication number
- CN108426914A CN108426914A CN201810232018.2A CN201810232018A CN108426914A CN 108426914 A CN108426914 A CN 108426914A CN 201810232018 A CN201810232018 A CN 201810232018A CN 108426914 A CN108426914 A CN 108426914A
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- Prior art keywords
- heat capacity
- specific heat
- coldplate
- thermal
- connect
- Prior art date
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Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000011835 investigation Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000002791 soaking Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a kind of thermal coefficient and the determining instruments of specific heat capacity, multiple support columns are vertically arranged on babinet, heating plate is arranged at the top of babinet and is connect with support column, motor setting can drive heating plate to be moved up and down along support column in babinet, heating plate is connect with temperature control device, and temperature control device is connect with control unit;Top plate is arranged at the top of support column, the bottom of top plate is arranged in pressure sensor, pressure sensor is connect with control unit, coldplate is connect with thermal insulative board, and it is arranged in the lower section of pressure sensor, for the determining instrument by the position of mobile coldplate and thermal insulative board, realization measures the specific heat capacity and thermal coefficient of detected materials, simple and convenient.
Description
Technical field
The present invention relates to thermal conductivity of material testing equipment field, the analyzer of specially a kind of thermal coefficient and specific heat capacity
Device can accurately measure the thermal coefficient and specific heat capacity of determinand.
Background technology
Thermal coefficient and specific heat capacity be reflect material conducts heat and heat transfer property one of important parameter, at present thermal coefficient and
The measurement of specific heat capacity needs to be tested using different instruments, and test equipment is expensive, greatly improves measurement
Cost, while also occupying the area in laboratory, thus develop it is a kind of can the thermal coefficient of test object and specific heat capacity simultaneously
Instrument is particularly important.
Invention content
For problems of the prior art, the present invention provides a kind of thermal coefficient and the determining instrument of specific heat capacity, surveys
Heat insulation layer is replaced with cold plate when measuring thermal coefficient, cold plate is replaced with heat insulation layer when SPECIFIC HEAT CAPACITY, passes through cold plate and thermal insulation
The replacement of layer, you can be respectively completed the measurement work of thermal coefficient and specific heat capacity.
The present invention is to be achieved through the following technical solutions:
A kind of determining instrument of thermal coefficient and specific heat capacity, including motor, babinet, multiple support columns, top plate, coldplate,
Thermal insulative board, control unit, temperature control device and the heating plate for being heated to detected materials;
Wherein, multiple support columns are vertically arranged on babinet, and heating plate is arranged at the top of babinet and is connect with support column, electricity
Machine setting heating plate can be driven to be moved up and down along support column in babinet, heating plate is connect with temperature control device, temperature control device and
Control unit connects;Top plate is arranged at the top of support column, and the bottom of top plate, pressure sensor and control is arranged in pressure sensor
Unit connects, and coldplate is connect with thermal insulative board, and is arranged in the lower section of pressure sensor;
When SPECIFIC HEAT CAPACITY, thermal insulative board is arranged in the top of detected materials, and is connect with pressure sensor;
When heat conducting coefficient measuring, coldplate is arranged in the top of detected materials, and is connect with pressure sensor.
Preferably, the thermal insulative board and coldplate connection stacked on top of one another.
Preferably, the side wall of the thermal insulative board is connected with the side wall of coldplate.
Preferably, horizontal sliding slot is provided on the support column, thermal insulative board and coldplate setting being capable of edges in sliding slot
Sliding slot moves.
Preferably, the bottom of the heating plate is provided with thermal insulation board, and the side of heating plate is provided with insulating layer.
Preferably, the heating plate include center hot plate and for prevent central hot plate level radiate guarded hot plate, it is described
The mounting hole being provided through on guarded hot plate, center hot plate are arranged in mounting hole and are connect with guarded hot plate, center hot plate and shield
Heat-insulated seam is provided between hot plate.
Preferably, the heating plate bottom is additionally provided with hoistable platform, and hoistable platform is installed on the support columns, hoistable platform
It is connect with motor.
Preferably, the coldplate is internally provided with cooling duct, and the water inlet of cooling duct is also associated with runoff investigation
Device.
Preferably, the water-quantity regulating device includes the motor-driven valve for regulating water flow and the overflow valve for pressure release;
The water inlet of cooling duct is sequentially connected motor-driven valve, overflow valve and water source.
Preferably, the cooling duct uses double helix conduit, and double helix conduit uses reverse-flow helical duct, cooling logical
Road includes the channel that two hands of spiral and water (flow) direction are contrary.
Compared with prior art, the present invention has technique effect beneficial below:
The determining instrument of a kind of thermal coefficient provided by the invention and specific heat capacity places detected materials on hot plate,
Then it is moved upwards along support column by motor pushing heating plate, when heat conducting coefficient measuring, mobile coldplate to detected materials
Top, and treat detectable substance with heating plate and stepped up, detectable substance is treated by heating plate and is heated, it is then single by controlling
Member obtains the power of heating plate, and the thermal coefficient under the object condition of high temperature to be detected is obtained further according to thermal coefficient calculation formula.
The position that coldplate and thermal insulative board need to be only moved when SPECIFIC HEAT CAPACITY, makes thermal insulative board being placed on detected materials
Top prevents to be measured measure to scatter and disappear, calculates heat caused by heating plate by control unit, and then obtain detected materials
Specific heat capacity.
The measurement of specific heat capacity and thermal coefficient can be completed by the position of mobile thermal insulation board and coldplate for the determining instrument,
Operating process is simple and convenient, reduces the input of experimental facilities, reduces cost, while also saving space.
Thermal coefficient and ratio can be realized by overturning thermal insulative board and coldplate in thermal insulative board and coldplate connection stacked on top of one another
The measurement of thermal capacitance.
Thermal insulative board and coldplate can also take horizontal connection, while sliding slot being arranged on the support columns, thermal insulative board and cooling
Plate moves horizontally on the chute, realizes the measurement of thermal coefficient and specific heat capacity.
Thermal insulation board and insulating layer are set in the bottom bottom and side wall of heating plate, prevents heat loss, survey can be improved
Accuracy of measurement.
In order to further increase the precision of detection, ensure that the heat of heating plate transmits vertically upward, hot plate is outer at center
Guarded hot plate is arranged in side, prevents the heat of center hot plate from spreading around, heat is enable uniformly to pass to object to be detected.
Double helix cooling duct is further set in coldplate, ensure that the consistency of cooling plate temperature, pass through simultaneously
The size of regulating device regulating pondage controls the temperature of coldplate.
Motor driving hoistable platform is slided up and down along support column, and motion process is stablized, while ensure that clamping to be detected
The consistency of power, this is simple in structure easy to process.
Description of the drawings
Fig. 1 is the structural schematic diagram of thermal conductivity measuring apparatus device;
Fig. 2 is the structural schematic diagram of heating plate;
Fig. 3 is the structural schematic diagram of coldplate;
Fig. 4 is thermostatic structural schematic diagram;
Fig. 5 is coldplate and thermal insulative board structural schematic diagram setting up and down;
Fig. 6 is coldplate and the horizontally disposed structural schematic diagram of thermal insulative board.
In figure:1 motor;2, babinet;3, hoistable platform;4, insulating layer;5, thermal insulation board 6, heating plate;7, detected materials;8、
Coldplate;9, thermal insulative board;10, pressure sensor;11, center hot plate;12, heat-insulated seam;13, guarded hot plate;14, motor-driven valve;15, water
Pipe;16 overflow valves.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit
It is fixed.
Embodiment 1
The present invention provides a kind of determining instrument of thermal coefficient, including motor 1, babinet 2, hoistable platform 3, heating plate 6,
Coldplate 8, thermal insulative board 9, pressure sensor 10, water-quantity regulating device, temperature control device and control unit.
As shown in Figure 1,4 support columns are vertical and are symmetricly set on the top surface of babinet 2, it is provided on hoistable platform 3 multiple
Mounting hole, the position of mounting hole and the position of support column match, and hoistable platform 3 is set on the support columns by mounting hole, is added
Hot plate 6 is mounted on the top surface of hoistable platform 3, and the bottom of heating plate 6 is additionally provided with thermal insulation board 5, is additionally provided on 6 side wall of heating plate
Insulating layer 4, and the height of insulating layer 4 is more than the thickness of heating plate 6, insulating layer 4 is higher by the part of heating plate 6 while can treat
Material 7 of measuring and monitoring the growth of standing timber is kept the temperature, and the precision of measurement is improved.Heating plate 6 is connect with temperature control device, and temperature control device connects with control unit
It connects.It is further fixedly arranged on top plate at the top of support column, top board undersurface is provided centrally with pressure sensor 10, to be measured for detecting
The pressure of material 7, pressure sensor 10 are connect with control unit.
Motor 1 is mounted on the inside of babinet 2, and the connecting pin of motor 1 passes through the top of the top surface and hoistable platform 3 of babinet 2
Connection, the pressure value control motor that control unit is detected according to pressure sensor 10 start or stop.
As shown in figure 5, coldplate 8 with thermal insulative board 9 is stacked on top of one another is fixedly connected, the center of coldplate 8 and thermal insulative board 9 is all provided with
It is equipped with and connects mounting hole with pressure sensor 10.
When heat conducting coefficient measuring, thermal insulative board 9 is located at the top of coldplate 8;Thermal insulative board 9 passes through spiral shell with pressure sensor 10
Column connects, and coldplate 8 is located at the top of detected materials 7;
When SPECIFIC HEAT CAPACITY, coldplate 8 is located at the top of thermal insulative board 9;Coldplate 8 is connect with pressure sensor 10, every
Warm plate 9 is located at the top of detected materials 7.
As shown in Fig. 2, heating plate 6 includes center hot plate 11 and guarded hot plate 13;Being provided centrally with for guarded hot plate 13 is perforative
Rectangular mounting hole, center hot plate 11 are mounted in mounting hole, are mutually transmitted between center hot plate 10 and guarded hot plate 13 in order to prevent
Heat-insulated seam 12 is arranged in heat between center hot plate 11 and guarded hot plate 13, ensures not straight between guarded hot plate 13 and center hot plate 10
Contact reduces heat transfer, and guarded hot plate 13 is fixedly connected with center hot plate 11 by multiple connectors, and center hot plate 11 is passed through
Heat transfer is treated detectable substance and is heated upwards.
Pressure sensor uses S type pull pressure sensor.Center hot plate 10 and guarded hot plate 6 are copper coin.
Temperature control device includes voltage output module, signal amplifier, relay and fuse successively, the bottom of center hot plate 11
Heat block is arranged in portion, and heat block and temperature control device are connect with DC power supply respectively, and temperature control device is connect with control unit, passes through control
The heating temperature of unit control centre processed hot plate 11, center hot plate 10 are additionally provided with thermocouple, are capable of inspection center's hot plate 11
Surface temperature, and can be by the temperature feedback of center hot plate 10 to control unit, and then realize the temperature control of heating plate 6.
As shown in figure 4, coldplate 8 carries out temperature control, the inside setting of coldplate 8 by the way of water cooling to detected materials 7
Cooling duct, cooling duct use double helix conduit, double helix conduit to use reverse-flow helical duct, including two hands of spiral
The channel being contrary with water (flow) direction.
As shown in figure 3, the water inlet of cooling duct connects motor-driven valve 14, motor-driven valve 14 controls the size of inflow, electronic
Valve 14 is connect by water pipe 15 with water source, and overflow valve 16 is additionally provided on the water pipe that motor-driven valve 14 is connect with water source;Work as motor-driven valve
14 when turning inflow down, and since the inflow at water source does not change, extra water is discharged by overflow valve 16.
Embodiment 2
The determining instrument and embodiment of a kind of thermal coefficient provided in this embodiment and specific heat capacity are essentially identical, difference
It is that the connection type and move mode of coldplate 8 and thermal insulative board 9, the structure of specific connection type are as follows.
As shown in fig. 6, the side wall of coldplate 8 is connect with the side wall of thermal insulative board 9, coldplate 8 and 9 horizontal alignment of thermal insulative board connect
It connects and is generally aligned in the same plane, be symmetrical arranged on 4 support columns there are one sliding slot, coldplate 8 and thermal insulative board 9 are arranged in sliding slot
In, pressure sensor is contacted with the top surface of coldplate 8, or is contacted with the top surface of thermal insulative board 9.
When SPECIFIC HEAT CAPACITY, movable temperature separation plate 9 to the top of detected materials 7, the top surface of thermal insulative board 9 and pressure sensor
Lower end in contact.
When heat conducting coefficient measuring, mobile coldplate 8 to the top of detected materials 7, the top surface of coldplate 8 and pressure sensing
The lower end in contact of device.
Coldplate and thermal insulative board may be used welding, rivet, be bolted or other existing connection type is connected.
Sliding slot is L-type angle steel, and sliding slot welds on the support columns, and coldplate 8 and thermal insulative board 9 are placed on the horizontal plane of sliding slot
On.
A kind of operation principle of the determining instrument of the thermal coefficient and specific heat capacity that provide below embodiment 1 carries out detailed
Description.
One, heat conducting coefficient measuring
When heat conducting coefficient measuring, by the Stud connection of thermal insulation board 9 and 10 lower end of pressure sensor, coldplate 8 be located at every
The lower section of hot plate 9.
Control unit starts motor, and motor drives hoistable platform to decline, test specimen to be measured is positioned on hot plate;Then it sets
Pressure value and heating temperature;By motor driving heating plate rising until pressure reaches setup pressure value, then pass through temperature control list
The temperature of member control heating plate, when temperature reaches stable, you can the thermal coefficient of detected materials is calculated.
Power P=I*U of heating plate is calculated by control unit.
Pass through thermal coefficient calculation formulaGo out result.
Calorimetric soaking copper billet power centered on wherein P, d are object under test thickness, and △ T are the temperature difference of hot plate and cold plate, A
Centered on calorimetric soaking copper billet area.
Two, SPECIFIC HEAT CAPACITY
When testing specific heat capacity, coldplate is removed from the stud of pressure sensor lower end first, afterwards turns over coldplate
And thermal insulative board, by the Stud connection of coldplate and sensor lower end, at this point, thermal insulative board is located at the lower section of coldplate.
Motor driving heating plate rises to thermal insulation board and is contacted with detected materials, sets heating temperature by control unit and adds
Hot time, determining instrument were powered after a period of time, heat caused by center calorimetric soaking copper coin were calculated, by sample specimens
The data such as quality, the heat that is absorbed and conduction time handled, you can acquire the specific heat capacity of sample specimens.Test process
In, heat insulation layer can effectively prevent heat loss.Calculating process is as follows:
Protect the heat Q generated after hot soaking copper coin energization a period of time0, calculated according to following formula:
Wherein:U--- protects the logical voltage of hot soaking copper coin;I--- protects the logical electric current of hot soaking copper coin;t1--- measure starting
Time;t2--- it measures and terminates the time;
(1) the heat Q that detected materials absorb whithin a period of time1, calculated according to following formula:
Q1=Q0 (1-2)
Wherein:Q0--- protect the heat generated after hot soaking copper coin energization a period of time;
(2) detected materials specific heat capacity c is calculated according to following formula:
Wherein:Q1--- the heat that detected materials absorb whithin a period of time;The quality of m--- detected materials;T1--- it is to be measured
Initial temperature before material heating;T2--- the final temperature after detected materials heating.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (10)
1. the determining instrument of a kind of thermal coefficient and specific heat capacity, which is characterized in that including motor (1), babinet (2), multiple supports
Column, top plate, coldplate (8), thermal insulative board (9), control unit, temperature control device and the heating plate (6) for being heated to detected materials;
Wherein, multiple support columns are vertically arranged on babinet (2), and heating plate (6) setting connects at the top of babinet (2) and with support column
It connecing, motor (1) setting can drive heating plate to be moved up and down along support column in babinet, and heating plate (6) is connect with temperature control device,
Temperature control device is connect with control unit;Top plate is arranged at the top of support column, and the bottom of top plate is arranged in pressure sensor, and pressure passes
Sensor (10) is connect with control unit, and coldplate (8) is connect with thermal insulative board (9), and is arranged in the lower section of pressure sensor (10);
When SPECIFIC HEAT CAPACITY, thermal insulative board (9) is arranged in the top of detected materials, and is connect with pressure sensor (10);
When heat conducting coefficient measuring, coldplate (8) is arranged in the top of detected materials, and is connect with pressure sensor (10).
2. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 1, which is characterized in that the thermal insulative board
(9) and coldplate (8) connection stacked on top of one another.
3. according to a kind of claim (1) thermal coefficient and the determining instrument of specific heat capacity, which is characterized in that the thermal insulative board
(9) side wall is connected with the side wall of coldplate (8).
4. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 3, which is characterized in that on the support column
It is provided with horizontal sliding slot, thermal insulative board (9) and coldplate (8) setting can move in sliding slot along sliding slot.
5. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 1, which is characterized in that the heating plate
(6) bottom is provided with thermal insulation board (5), and the side of heating plate (6) is provided with insulating layer (4).
6. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 1, which is characterized in that the heating plate
(6) include center hot plate (11) and the guarded hot plate (13) for preventing central hot plate level from radiating, set on the guarded hot plate (13)
Be equipped with perforative mounting hole, center hot plate (11) is arranged in mounting hole and connect with guarded hot plate (13), center hot plate (11) and
Heat-insulated seam (12) is provided between guarded hot plate (13).
7. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 1, which is characterized in that the heating plate
(6) bottom is additionally provided with hoistable platform (3), and hoistable platform (3) is installed on the support columns, and hoistable platform (3) connects with motor (1)
It connects.
8. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 1, which is characterized in that the coldplate
(8) it is internally provided with cooling duct, the water inlet of cooling duct is also associated with water-quantity regulating device.
9. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 8, which is characterized in that the runoff investigation
Device includes the motor-driven valve (14) for regulating water flow and the overflow valve (16) for pressure release;The water inlet of cooling duct is successively
Connect motor-driven valve (14), overflow valve (16) and water source.
10. a kind of thermal coefficient and the determining instrument of specific heat capacity according to claim 8, which is characterized in that the cooling is logical
Road uses double helix conduit, and it includes two hands of spiral and flow that double helix conduit, which uses reverse-flow helical duct, cooling duct,
The channel that direction is contrary.
Priority Applications (1)
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CN201810232018.2A CN108426914B (en) | 2018-03-20 | 2018-03-20 | Measuring instrument for heat conductivity coefficient and specific heat capacity |
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Application Number | Priority Date | Filing Date | Title |
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CN201810232018.2A CN108426914B (en) | 2018-03-20 | 2018-03-20 | Measuring instrument for heat conductivity coefficient and specific heat capacity |
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CN108426914A true CN108426914A (en) | 2018-08-21 |
CN108426914B CN108426914B (en) | 2024-01-26 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111751708A (en) * | 2020-06-29 | 2020-10-09 | 苏州猎奇智能设备有限公司 | Chip temperature control test bench and temperature control test method thereof |
CN113702424A (en) * | 2021-08-30 | 2021-11-26 | 巩义市泛锐熠辉复合材料有限公司 | Heat insulation testing machine |
CN113933341A (en) * | 2021-08-26 | 2022-01-14 | 江苏顺隆鸿泰电力设备有限公司 | Detection apparatus for entrance material for building engineering |
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JP2006064413A (en) * | 2004-08-24 | 2006-03-09 | Shimane Univ | Specific heat and heat conductivity measuring method |
CN106770442A (en) * | 2016-12-16 | 2017-05-31 | 长安大学 | Bituminous paving high temperature heat transfer performance measurement instrument |
CN107067905A (en) * | 2017-05-03 | 2017-08-18 | 德州学院 | The general specific heat capacity experiment instrument of gas-liquid solid |
CN107621479A (en) * | 2017-10-30 | 2018-01-23 | 长安大学 | A kind of rock specific heat capacity measure device and assay method |
CN207946382U (en) * | 2018-03-20 | 2018-10-09 | 长安大学 | A kind of determining instrument of thermal coefficient and specific heat capacity |
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US6116777A (en) * | 1996-09-10 | 2000-09-12 | Pause; Barbara Hildegard | Procedure and device for the measurement of thermophysical characteristics of textiles and other plate-like materials |
JP2006064413A (en) * | 2004-08-24 | 2006-03-09 | Shimane Univ | Specific heat and heat conductivity measuring method |
CN106770442A (en) * | 2016-12-16 | 2017-05-31 | 长安大学 | Bituminous paving high temperature heat transfer performance measurement instrument |
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CN113933341A (en) * | 2021-08-26 | 2022-01-14 | 江苏顺隆鸿泰电力设备有限公司 | Detection apparatus for entrance material for building engineering |
CN113702424A (en) * | 2021-08-30 | 2021-11-26 | 巩义市泛锐熠辉复合材料有限公司 | Heat insulation testing machine |
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