CN206774057U - A kind of pyroelectric effect instrument - Google Patents
A kind of pyroelectric effect instrument Download PDFInfo
- Publication number
- CN206774057U CN206774057U CN201720275253.9U CN201720275253U CN206774057U CN 206774057 U CN206774057 U CN 206774057U CN 201720275253 U CN201720275253 U CN 201720275253U CN 206774057 U CN206774057 U CN 206774057U
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- China
- Prior art keywords
- carrier
- cold end
- hot junction
- chilling plate
- semiconductor chilling
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Abstract
The utility model discloses a kind of pyroelectric effect instrument, including power supply, cold end carrier, semiconductor chilling plate, hot junction carrier, wire, thermometer and adiabatic storehouse, the input A and output end B of wherein power supply are connected by wire with semiconductor chilling plate respectively, cold end carrier and hot junction carrier are respectively with heat conductive silica gel tight bond in the upper and lower surfaces of semiconductor chilling plate, thermometer is respectively housed on cold end carrier and hot junction carrier, cold end carrier is close on constant temperature water tank by heat conductive silica gel, cold end carrier, semiconductor chilling plate, hot junction carrier is encapsulated in adiabatic storehouse with constant temperature water tank.The utility model greatly simplifies the measurement to thermoelectric conversion and electric heating conversion efficiency, while also improve measurement accuracy by keeping cold junction temperature certain.
Description
Technical field
The utility model is to be related to a kind of pyroelectric effect laboratory apparatus, concretely relates to a kind of measurement pyroelectric effect effect
The laboratory apparatus of rate.
Background technology
Existing pyroelectric effect laboratory apparatus, such as Application No. CN200620078113.4, a kind of entitled thermoelectricity effect
The Chinese patent of experimental provision is answered, it includes cold end carrier (2), semiconductor chilling plate (3) and hot junction carrier (4), cold end carrier
(2) and hot junction carrier (4) uses two faces of the heat conductive silica gel tight bond in semiconductor chilling plate (3) up and down, cold end carrier respectively
(2) thermometer (6) and on hot junction carrier (4) is respectively housed, power supply is connected on semiconductor chilling plate, can due to peltier effect
So that heat is transported into hot junction from cold end, by thermometer measure cold end carrier (2) in experiment, and calculates power supply and apply voltage production
Raw heat, then the temperature of hot junction carrier (4) is measured, see whether meet the first law of thermodynamics, i.e., the heat that hot junction obtains is
The no heat lost equal to cold end adds the work(that electric energy is done.The error of the experimental provision is larger, and one of main cause is half
Conductor cooling piece cold junction temperature is unmanageable stable.
The content of the invention
The purpose of this utility model is to overcome deficiency of the prior art, there is provided one kind can test in pyroelectric effect
The constant solution of semiconductor cold junction temperature is kept in journey, and discloses and a kind of can improve experimental precision and the thermoelectricity of efficiency
Effect experiment instrument.
In order to solve the above-mentioned technical problem, the utility model is to be achieved through the following technical solutions：
A kind of pyroelectric effect instrument, including power supply, cold end carrier, semiconductor chilling plate, hot junction carrier, wire, thermometer
With adiabatic storehouse, the input A and output end B of wherein power supply are connected by wire with semiconductor chilling plate respectively, cold end carrier
With hot junction carrier respectively with heat conductive silica gel tight bond in the upper and lower surfaces of semiconductor chilling plate, cold end carrier and hot junction carrier
On thermometer is respectively housed, it is characterized in that：Cold end carrier is close on constant temperature water tank by heat conductive silica gel, cold end carrier, semiconductor
Cooling piece, hot junction carrier and constant temperature water tank are encapsulated in adiabatic storehouse.
Preferably, the cold end carrier and hot junction carrier are brass ingots.
Preferably, the precision of the thermometer is 0.1 DEG C of digital display thermometer.
Further, above-mentioned semiconductor cooling piece is made of bismuth telluride.
Further, above-mentioned constant temperature water tank is 90mmx90mnx150mm airtight water tank, having heaters and water in water tank
The circulatory system, ensure that the temperature of water in constant temperature water tank keeps a steady state value.
Principle of the present utility model：
The utility model realizes the mutual conversion that heat energy and electric energy ask using the pyroelectric effect of semiconductor, mutual by measuring
Change energy size, the first law of thermodynamics can be verified, meanwhile, can cause student have to pyroelectric effect deeper into reason
Solution.The utility model experimental provision can be used for verifying the thermoelectric power of the first law of thermodynamics and semi-conducting material, its
Experiment content mainly has two aspects：(1) electric heating is changed, and the input A of power supply 1 is connected on semiconductor chilling plate, electric energy is done
Work(, heat can be transported to hot junction from cold end, here it is peltier effect, the heat that hot junction obtains is equal to the heat that cold end loses
The work(that amount is done plus electric energy, meets the first law of thermodynamics, i.e. law of conservation of energy；(2) temperature difference be present in heat to electricity conversion, both ends
Semiconductor refrigerating sector-meeting electrical potential difference, referred to as Seebeck effect, by measuring different temperatures difference institute are produced at cooling piece both ends
Corresponding electrical potential difference, can be with calculating temperature difference electromotive force rate.
Compared with prior art, the beneficial effects of the utility model are：
The utility model greatly simplifies the survey to thermoelectric conversion and electric heating conversion efficiency by keeping cold junction temperature certain
Amount, while also improve measurement accuracy.
Brief description of the drawings
Fig. 1 is a kind of pyroelectric effect laboratory apparatus simplification figure of the utility model.
Embodiment
1 the utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
Embodiment 1
Power supply 1 is 12V voltage-stabilized power supplies, cold end carrier 2 and the Huang that hot junction carrier 4 is that size is 40mmX40mmX100mm
Copper billet, constant temperature water tank 8 are the water tank that size is 90mmX90mmX150mm, the semi-conducting material dictionization bismuth of semiconductor chilling plate 3
(Bi2Te3) make, its size is 40mmx40mmx3mm, and the input A and output end B of power supply 1 are respectively by wire 5 with partly leading
Body cooling piece 3 is connected, and cold end carrier 2 and hot junction carrier 4 are respectively with heat conductive silica gel tight bond in the upper of semiconductor chilling plate 3
Lower two faces, thermometer 6 is respectively equipped with cold end carrier 2 and hot junction carrier 4, and the precision of the thermometer 6 is 0.1 DEG C of numerical monitor
Thermometer, wherein cold end carrier 2 are close on constant temperature water tank 8 by heat conductive silica gel, cold end carrier 2, semiconductor chilling plate 3, heat
End carrier 4 and constant temperature water tank 8 are encapsulated in adiabatic storehouse 7, and the adiabatic storehouse is the closed of size 100mmX100mmX250mm
Lucite box, the inside filled plastics foam are used for thermal insulation.
For electric heating transformation experiment, existing pyroelectric effect laboratory apparatus, such as Application No. 200620078113.4, it is tested
Data are：When voltage-stabilized power supply is 12V, cold junction temperature declines 6.2 DEG C within the 400s times, and hot-side temperature raises 8.0 DEG C.Record
Thermometer 6 changes, and can obtain the temperature change of two curves-represent respectively cold end carrier 2 and hot junction carrier 4.Calculate thermoelectricity
Transformation efficiency to the both ends temperature of record, it is necessary to carry out described point line, then to two sections of curves progress valuation calculating, difference respectively
Obtain hot junction carrier 4 and receive heat energy, and cold end carrier 2 loses heat energy.And valuation computing meeting is carried out to two groups of numerical value of change
Increase error.So that there is error with heat to electricity conversion benefit result in result.
And it is to pyroelectric effect laboratory apparatus described herein, its experimental data：When voltage-stabilized power supply is 12V, cold end
Temperature declines 0.1 DEG C within the 400s times, therefore cold junction temperature can be considered constant, and hot-side temperature raises 2.0 DEG C, to this group of number
According to, it is only necessary to valuation computing is carried out to hot-side temperature reading, experimentation is more easy, and experimental result more meets thermoelectricity effect
Should.
For electric heating transformation experiment, existing pyroelectric effect laboratory apparatus, such as Application No. 200620078113.4, it is tested
Data are：When the temperature of cold end carrier 2 is 30.1 DEG C, and the temperature of hot junction carrier 4 is 72.2 DEG C, power output end B voltage is
1.92V, thermoelectric power is calculated as 0,0513V/ DEG C.When the temperature of cold end carrier 2 is 34.0 DEG C, the temperature of hot junction carrier 4 is
At 67.3 DEG C, power output end B voltage is 1.66833V, calculates thermoelectric power as 0,0501V/ DEG C.It is and special to this
Sharp instrument, its experimental data are：When the temperature of cold end carrier 2 is 30.1 DEG C, and the temperature of hot junction carrier 4 is 72.2 DEG C, power supply output
The voltage for holding B is 1.92V, calculates thermoelectric power as 0,0513V/ DEG C.When the temperature of cold end carrier 2 be 30.1 DEG C, hot junction
When the temperature of carrier 4 is 67.3 DEG C, power output end B voltage is 1.88738V, calculates thermoelectric power as 0,0506V/
℃.By comparing it can be seen that step needed for the laboratory apparatus of this patent is more succinct, it is only necessary to record the change of the temperature of hot junction carrier 4
Change, and experimental result is closer to result of calculation.
The undeclared part being related in the utility model is same as the prior art or is realized using prior art.
Claims (3)
1. a kind of pyroelectric effect instrument, including power supply (1), cold end carrier (2), semiconductor chilling plate (3), hot junction carrier (4), lead
Line (5), thermometer (6) and adiabatic storehouse (7), wherein the input A and output end B of power supply (1) are respectively by wire (5) with partly leading
Body cooling piece (3) is connected, and cold end carrier (2) and hot junction carrier (4) are respectively with heat conductive silica gel tight bond in semiconductor refrigerating
Thermometer (6) is respectively housed on the upper and lower surfaces of piece (3), cold end carrier (2) and hot junction carrier (4), it is characterized in that：Cold end carrier
(2) be close to by heat conductive silica gel on constant temperature water tank (8), cold end carrier (2), semiconductor chilling plate (3), hot junction carrier (4) with
Constant temperature water tank (8) is encapsulated in adiabatic storehouse (7).
2. pyroelectric effect instrument according to claim 1, it is characterized in that：The cold end carrier (2) and hot junction carrier (4) are equal
It is brass ingot.
3. pyroelectric effect instrument according to claim 1, it is characterized in that：The precision of the thermometer (6) is 0.1 DEG C of number
Word displays temperature meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275253.9U CN206774057U (en) | 2017-03-21 | 2017-03-21 | A kind of pyroelectric effect instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275253.9U CN206774057U (en) | 2017-03-21 | 2017-03-21 | A kind of pyroelectric effect instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206774057U true CN206774057U (en) | 2017-12-19 |
Family
ID=60632040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720275253.9U Expired - Fee Related CN206774057U (en) | 2017-03-21 | 2017-03-21 | A kind of pyroelectric effect instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206774057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036034A (en) * | 2018-08-24 | 2018-12-18 | 吴玉珍 | Efficiency of heat engine power thermoelectricity comprehensive test instrument |
| CN115684675A (en) * | 2022-11-17 | 2023-02-03 | 镭神技术（深圳）有限公司 | Miniature semiconductor refrigerating sheet aging clamp and power-on and temperature acquisition method |
-
2017
- 2017-03-21 CN CN201720275253.9U patent/CN206774057U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036034A (en) * | 2018-08-24 | 2018-12-18 | 吴玉珍 | Efficiency of heat engine power thermoelectricity comprehensive test instrument |
| CN115684675A (en) * | 2022-11-17 | 2023-02-03 | 镭神技术（深圳）有限公司 | Miniature semiconductor refrigerating sheet aging clamp and power-on and temperature acquisition method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20190321 |