CN201212878Y - Heat conducting coefficient measurement device - Google Patents
Heat conducting coefficient measurement device Download PDFInfo
- Publication number
- CN201212878Y CN201212878Y CNU2008200792693U CN200820079269U CN201212878Y CN 201212878 Y CN201212878 Y CN 201212878Y CN U2008200792693 U CNU2008200792693 U CN U2008200792693U CN 200820079269 U CN200820079269 U CN 200820079269U CN 201212878 Y CN201212878 Y CN 201212878Y
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- sleeve pipe
- red copper
- end cap
- coefficient
- heat conductivity
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Abstract
The utility model discloses a thermal conductivity measure instrument which has the technical proposal that an outer shell is included. A refrigerant inlet (1) and a refrigerant outlet (2) are arranged on the outer shell which is a hollow cylindrical cooling sleeve (3), wherein both ends of the sleeve (3) are sealed, the cylindrical outer wall is provided with an opening which is communicated with the refrigerant inlet (1) and the refrigerant outlet (2), and the refrigerant flows circularly and cools between the interlayer of the cooling sleeve (3); a red copper sleeve (5) and a heating rod (6) are coaxially arranged in the cooling sleeve (3), and the heating rod (6) is connected with a precise heating source (17); a wall temperature thermoelectric couple (10) is arranged on the cooling sleeve (3) and the red copper sleeve (5), and the wall temperature thermoelectric couple (10) is connected with a thermoelectric couple data collector (16). The measure instrument can detect thermal conductivity of solid-liquid phase change medium, particle materials and viscous medium and can continuously detect the thermal conductivity of the solid-liquid phase change medium in the state of solid phase and liquid phase. Each element of the thermal conductivity measure instrument is detachable, and the thermal conductivity measure instrument has safety work and easy maintenance.
Description
Technical field
The utility model relates to a kind of coefficient of heat conductivity determinator, in order to measure the coefficient of heat conductivity of solid-liquid phase change medium, particulate material, viscous medium; But the solid-liquid phase change medium is in the coefficient of heat conductivity continuous coverage of solid phase, liquid phase respectively.
Background technology
Phase-change material (Phase Change Material) is widely used in the accumulator system, and coefficient of heat conductivity is the most important a kind of hot rerum natura of PCM, at first will obtain its hot physical data when research and utilization PCM.Coefficient of heat conductivity generally by experiment device record.
The coefficient of heat conductivity that common stable state flat band method based on the one-dimensional stable heat conduction theory is surveyed PCM has following shortcoming and can not use: 1. PCM is in the variation of solid-liquid two-phase, heating process is carried out, the liquid phase easy to leak, be difficult for the condition of molding of preparation testing tool requirement etc., experimental result misses by a mile, especially be unfavorable for the measurement of liquid, can not in same instrument, carry out the comprehensive compare test of solid-liquid two-phase; 2. to obtain reliable specimen surface medial temperature, need to use a considerable amount of thermopairs; 3. the temperature difference stable condition length consuming time before the steady state method setup test is write down, experiment test process length also consuming time.
Survey the PCM coefficient of heat conductivity based on the infinitely great flat band method of unstable state in the prior art and have following defective: 1. PCM is in solid phase and still can tests fast, but can't measure liquid phase, can not carry out in same instrument the test of solid-liquid two-phase; 2. unstable state method heat conduction theory model complexity; 3. require test block difficult satisfied.
But, must there be suitable testing tool easily to produce needs to satisfy along with the technical progress requirement.
Summary of the invention
The purpose of this utility model is that a kind of coefficient of heat conductivity determinator will be provided, and it can test the coefficient of heat conductivity of phase-change material solid phase and liquid phase easily, also can measure the coefficient of heat conductivity of thick liquid and particulate material.
In order to reach the technical scheme that the purpose of this utility model is taked, comprise shell, be located at refrigerant import 1 and refrigerant exit 2 on this shell, it is characterized in that, this shell is a cooling collar 3, this cooling collar 3 is sealed at both ends hollow cylindrical, and this cylindrical outer wall perforate communicates with refrigerant import 1 and refrigerant exit 2, and refrigerant circulates cooling between the interlayer of cooling collar 3; The coaxial red copper sleeve pipe 5 that is provided with in this cooling collar 3, the coaxial heating rod 6 that is provided with in this red copper sleeve pipe 5, this heating rod 6 is connected with accurate heating source 17 by heating rod wiring 9; Be provided with wall temperature thermopair 10 on described cooling collar 3 and red copper sleeve pipe 5, wall temperature thermopair 10 is connected with thermopair data acquisition unit 16.
In the above-mentioned coefficient of heat conductivity determinator, the two ends of described cooling collar 3 are to seal by band external thread sleeve pipe end-cap 7 and sleeve pipe end cap 8 respectively, cooling collar 3 inwalls one end machining internal thread matches with being with externally threaded sleeve pipe end cap 7, and the other end of cooling collar 3 and sleeve pipe end cap 8 stick with glue and connect.
In the above-mentioned coefficient of heat conductivity determinator, be with externally threaded sleeve pipe end cap 7 porose with sleeve pipe end cap 8 centre drills, the external diameter of red copper sleeve pipe 5 cooperates with the internal diameter in this hole, and red copper sleeve pipe 5 passes with the center pit of externally threaded sleeve pipe end cap 7 with sleeve pipe end cap 8, and symmetry is installed.
In the above-mentioned coefficient of heat conductivity determinator, the internal diameter fitted shaft of the external diameter of described heating rod 6 and red copper sleeve pipe 5 is installed to symmetry, and heat-conducting silicone grease is filled in the gap between them; The space that the both ends of the both ends of red copper sleeve pipe 5 and heating rod 6 surround is filled with adiabatic cotton respectively.
In the above-mentioned coefficient of heat conductivity determinator, have groove, imbed 10 at least 3 pairs of wall temperature thermopairs in cooling collar 3 inboards; At red copper sleeve pipe 5 outer walls fluting, imbed 10 at least 3 pairs of wall temperature thermopairs.
In the above-mentioned coefficient of heat conductivity determinator, described refrigerant import 1 is connected with the outlet of a calibration cell 15, and described refrigerant exit 2 is connected with the inlet of calibration cell 15.
In the above-mentioned coefficient of heat conductivity determinator, described being with on the externally threaded sleeve pipe end cap 7 is welded with handle, is convenient to dismounting.
In the above-mentioned coefficient of heat conductivity determinator, described accurate heating power supply 17 is the accurate stabilized voltage supply of direct current.
In the above-mentioned coefficient of heat conductivity determinator, described calibration cell 15 is provided with temperature control equipment.
The beneficial effects of the utility model are, the PCM medium is once being tested in the installation process, both can measure the coefficient of heat conductivity of solid phase, again can measure viscous medium, the coefficient of heat conductivity of the back PCM liquid phase that heats up; The test process medium seals, and can not reveal.To different PCM medium refrigerant temperature scalable; Heating rod load scalable; Circuit, refrigerant circulate simple, and system debug is simple, and each element is detachable, easy care.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is heating tube and the thermopair arrangenent diagram cut-open view of an embodiment of the present utility model;
Fig. 3 is that an embodiment cooling collar 3 of the present utility model and thermopair are arranged cut-open view.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, Fig. 2, Fig. 3: 1. refrigerant import; 2. refrigerant exit; 3. cooling collar, its material is a red copper in the present embodiment, is convenient to good heat transfer; 4. measured material; 5. red copper sleeve pipe; 6. heating rod is the direct current resistance silk in the present embodiment, can not connect AC power; 7. be with externally threaded sleeve pipe end cap, it is the red copper material in the present embodiment, with cooling jacket 3 by being threaded, be easy to dismounting, its central punch, the end cap outside is welded with 2 handles, is convenient to dismounting; 8. sleeve pipe end cap, in the present embodiment, it is the red copper material, with cooling jacket 3 welding, its central punch; 9. the heating rod wiring that is connected with accurate heating source; 10. the wall temperature thermopair that is connected with the thermopair data acquisition unit; 11. adiabatic cotton; 12. the PVC material is adopted in the cannula tip adiabatic section in the present embodiment, insert adiabatic cotton; 13. the PVC material is adopted in the cannula tip adiabatic section in the present embodiment, insert adiabatic cotton; 14. adiabatic cotton; 15. calibration cell; 16. thermopair data acquisition unit; 17. accurate heating power supply is the accurate stabilized voltage supply of direct current in the present embodiment; 18. refrigerant is a medium with water in the present embodiment, the temperature scalable; Oil resistant can be adopted during the pyrometry phase transition temperature, anti freezing solution etc. can be adopted when surveying the low temperature phase change temperature.
Cooling collar 3 one ends have internal thread to be threaded with being with externally threaded sleeve pipe end cap 7; The other end of cooling collar 3 and sleeve pipe end cap 8 stick with glue and connect.
Be with externally threaded sleeve pipe end cap 7 and 8 centre-drilling holes of sleeve pipe end cap, red copper sleeve pipe 5 is enclosed within on this center pit; One side of red copper sleeve pipe 5 has internal thread, the plug wire sealing; Heating rod 6 in the red copper sleeve pipe 5 places the axial centre of red copper sleeve pipe 5; Fill heat-conducting silicone grease and make heating rod 6 and red copper sleeve pipe 5 good heat transfer; The heating rod wiring 9 that is connected with accurate heating power supply 7 is stretched out from the opposite side of red copper sleeve pipe 5; Both sides are inserted adiabatic cotton 11 and 14 respectively in the red copper sleeve pipe 5.
The adiabatic section, forming sleeves end, space 12 and 13 that the both ends of the both ends of red copper sleeve pipe 5 and heating rod 6 surround.In cannula tip adiabatic section 12 and 13, be filled with adiabatic cotton.Cannula tip adiabatic section 12 is bonding with sleeve pipe end cap 8; The punching of 12 ends, cannula tip adiabatic section, wall temperature thermopair 10 stretches out 12 ends, cannula tip adiabatic section and is connected with thermopair data acquisition unit 16; During test, this device is erect, and cannula tip adiabatic section 13 relies on gravity to compress with being with externally threaded sleeve pipe end cap 7.
Below further describe this device by test process:
In the embodiment shown in fig. 1, it is such testing installation process first: three pairs of wall temperature thermopairs 10 are imbedded in the inside groove of cooling collar 3, stretch out in the groove of connector lug → other three pairs of wall temperature thermopairs 10 are imbedded red copper sleeve pipe 5 → will → red copper sleeve pipe 5 tight with a sidespin of externally threaded sleeve pipe end cap 7 and cooling collar 3 be inserted in the center pit with externally threaded sleeve pipe end cap 7 → perfusion measured material 4 → sleeve pipe end cap 8 is enclosed within on the red copper sleeve pipe 5, interface sticks with glue and connects; Sleeve pipe end cap 8 cooperates with the opposite side of cooling collar 3, interface sticks with glue and connects → heating rod 6 packed into placed in the middle in the red copper sleeve pipe 5 → port → plug wire that adiabatic cotton 14 is filled in red copper sleeve pipe 5 to seal a side of red copper sleeve pipe 5 → adiabatic cotton 11 is filled in the opposite side of red copper sleeve pipe 5 → pour into heat-conducting silicone grease → filling adiabatic cotton cannula tip adiabatic section 13 in the gap of heating rod 6 and red copper sleeve pipe 5, device erects and to be pressed on the cannula tip adiabatic section 13 → in the central punch of cannula tip adiabatic section 12, heating rod wiring 9 and the thermopair (3 pairs) of copper tube outer wall stretch out this center pit → insert adiabatic cotton in cannula tip adiabatic section 12 → cannula tip adiabatic section 12 sticks with glue with sleeve pipe end cap 8 and connects → the refrigerant import 1 on the cooling collar 3 and the outlet of calibration cell 15 by flexible pipe be fastenedly connected → refrigerant exit 2 on the cooling collar 3 is fastenedly connected → is connected debugging wall temperature thermopair 10 with the inlet of calibration cell 15 by flexible pipe and heat measured materials with the accurate heating power supply 17 of thermopair data acquisition unit 16 → debugging heating rod wiring 9 and accurate heating power supply 17 → unlatching, the voltage that the pump of opening calibration cell 15 cools off → regulates accurate heating power supply 17 can be tested solid-state with liquid temperature field → regulating system and judge that the temperature field is in the data that obtain thermopair data acquisition unit 16 behind the homeostasis, judges the state of measured material phase of living in → calculate the acquisition thermal conductivity value by permanent hot-fluid cylinder one-dimensional stable conduction model.
After the first test, need pour out material, the test process flow process is as follows once more: disconnect all wiring → will install and oppositely stand upside down, take off cannula tip adiabatic section 13 → by the handle with externally threaded sleeve pipe end cap 7 oppositely screw off with externally threaded sleeve pipe end cap 7 → the pour out test material → detected materials of packing into → red copper sleeve pipe 5 be enclosed within on the externally threaded sleeve pipe end cap 7 → device erects and is pressed on the cannula tip adiabatic section 13 → the refrigerant import 1 on the cooling collar 3 and the outlet of calibration cell 15 by flexible pipe be fastenedly connected → refrigerant exit 2 on the cooling collar 3 is fastenedly connected → is connected the accurate heating power supply 17 of debugging wall temperature thermopair 10 and thermopair data acquisition unit 16 → debugging heating rod wiring 9 and accurate heating power supply 17 → unlatching with the inlet of calibration cell 15 by flexible pipe and heat measured materials, the voltage that the pump of opening calibration cell 15 cools off → regulates accurate heating power supply 17 can be tested solid-state with liquid temperature field → regulating system and judge that the temperature field is in the data that obtain thermopair data acquisition unit 16 behind the homeostasis, judges the state of measured material phase of living in → calculate the acquisition thermal conductivity value by permanent hot-fluid cylinder one-dimensional stable conduction model.
It should be noted last that, above embodiment only is used to the technical solution of the utility model is described and is unrestricted, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1, a kind of thermal conductivity measuring apparatus, comprise shell, be located at refrigerant import (1) and refrigerant exit (2) on this shell, it is characterized in that, this shell is cooling collar (3), this cooling collar (3) is sealed at both ends hollow cylindrical, and this cylindrical outer wall perforate communicates with refrigerant import (1) and refrigerant exit (2), and refrigerant circulates cooling between the interlayer of cooling collar (3); The coaxial red copper sleeve pipe (5) that is provided with in this cooling collar (3), the coaxial heating rod (6) that is provided with in this red copper sleeve pipe (5), this heating rod (6) is connected with accurate heating source (17) by heating rod wiring (9); Be provided with wall temperature thermopair (10) on described cooling collar (3) and red copper sleeve pipe (5), wall temperature thermopair (10) is connected with thermopair data acquisition unit (16).
2, coefficient of heat conductivity determinator according to claim 1, it is characterized in that, the two ends of described cooling collar (3) are to seal by band external thread sleeve pipe end-cap (7) and sleeve pipe end cap (8) respectively, cooling collar (3) inwall one end machining internal thread matches with being with externally threaded sleeve pipe end cap (7), and the other end of cooling collar (3) and sleeve pipe end cap (8) stick with glue and connect.
3, coefficient of heat conductivity determinator according to claim 2, it is characterized in that, be with externally threaded sleeve pipe end cap (7) and sleeve pipe end cap (8) centre drill porose, the external diameter of red copper sleeve pipe (5) cooperates with the internal diameter in this hole, red copper sleeve pipe 5 passes with the center pit of externally threaded sleeve pipe end cap (7) with sleeve pipe end cap (8), and symmetry is installed.
4, coefficient of heat conductivity determinator according to claim 1 and 2 is characterized in that, the internal diameter fitted shaft of the external diameter of described heating rod (6) and red copper sleeve pipe (5) is installed to symmetry, and heat-conducting silicone grease is filled in the gap between them; The space that the both ends of the both ends of red copper sleeve pipe (5) and heating rod (6) surround is filled with adiabatic cotton respectively.
5, coefficient of heat conductivity determinator according to claim 1 and 2 is characterized in that, has groove in cooling collar (3) inboard, imbeds (10) at least 3 pairs of wall temperature thermopairs; At red copper sleeve pipe (5) outer wall fluting, imbed (10) at least 3 pairs of wall temperature thermopairs.
6, coefficient of heat conductivity determinator according to claim 1 and 2 is characterized in that, described refrigerant import (1) is connected with the outlet of a calibration cell (15), and described refrigerant exit (2) is connected with the inlet of this calibration cell (15).
According to claim 2 or 3 described coefficient of heat conductivity determinators, it is characterized in that 7, described being with on the externally threaded sleeve pipe end cap (7) is welded with handle, be convenient to dismounting.
8,, coefficient of heat conductivity determinator according to claim 1 and 2, it is characterized in that described accurate heating power supply (17) is the accurate stabilized voltage supply of direct current.
9,, coefficient of heat conductivity determinator according to claim 1 and 2, it is characterized in that described calibration cell (15) is provided with temperature control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200792693U CN201212878Y (en) | 2008-03-10 | 2008-03-10 | Heat conducting coefficient measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200792693U CN201212878Y (en) | 2008-03-10 | 2008-03-10 | Heat conducting coefficient measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN201212878Y true CN201212878Y (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200792693U Expired - Fee Related CN201212878Y (en) | 2008-03-10 | 2008-03-10 | Heat conducting coefficient measurement device |
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| CN (1) | CN201212878Y (en) |
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| CN101852752A (en) * | 2010-06-10 | 2010-10-06 | 上海理工大学 | Device and method for measuring heat conductivity of poor heat conductive materials |
| CN102110387A (en) * | 2011-01-26 | 2011-06-29 | 浙江大学 | Teaching experimental device for measuring convective heat-transfer coefficient of micro-pipe |
| CN102520011A (en) * | 2011-12-07 | 2012-06-27 | 东南大学 | Dense-phase zone thermal transmission coefficient measuring apparatus and measuring method based on measuring apparatus |
| CN102735708A (en) * | 2012-06-27 | 2012-10-17 | 广东工业大学 | Determination system and method for heat exchange coefficient of cooper pipe |
| CN102879421A (en) * | 2012-09-27 | 2013-01-16 | 广东白云学院 | Measuring device and measuring method of heat-conductivity efficiency |
| CN103069566A (en) * | 2010-06-23 | 2013-04-24 | 法国原子能及替代能源委员会 | Thermogenerator comprising phase-change materials |
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| CN101852752A (en) * | 2010-06-10 | 2010-10-06 | 上海理工大学 | Device and method for measuring heat conductivity of poor heat conductive materials |
| US9318681B2 (en) | 2010-06-23 | 2016-04-19 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Thermogenerator comprising phase-change materials |
| CN103069566A (en) * | 2010-06-23 | 2013-04-24 | 法国原子能及替代能源委员会 | Thermogenerator comprising phase-change materials |
| CN102110387A (en) * | 2011-01-26 | 2011-06-29 | 浙江大学 | Teaching experimental device for measuring convective heat-transfer coefficient of micro-pipe |
| CN102110387B (en) * | 2011-01-26 | 2013-04-17 | 浙江大学 | Teaching experimental device for measuring convective heat-transfer coefficient of micro-pipe |
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| CN110794896B (en) * | 2019-10-31 | 2021-06-15 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
| CN110794896A (en) * | 2019-10-31 | 2020-02-14 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
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