CN108766146A - A kind of specific heat capacity demonstrator - Google Patents
A kind of specific heat capacity demonstrator Download PDFInfo
- Publication number
- CN108766146A CN108766146A CN201810827067.0A CN201810827067A CN108766146A CN 108766146 A CN108766146 A CN 108766146A CN 201810827067 A CN201810827067 A CN 201810827067A CN 108766146 A CN108766146 A CN 108766146A
- Authority
- CN
- China
- Prior art keywords
- heat capacity
- specific heat
- test tube
- demonstrator
- test tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 230000005611 electricity Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 14
- 239000008157 edible vegetable oil Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007654 immersion Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/16—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for science of heat
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of specific heat capacity demonstrators, the demonstrator includes demonstration box, two test tubes, several conducting wires, switch and low-tension supply, two test tubes are fixedly arranged in demonstration box inner wall, resistance wire is inserted in two test tubes, two resistance wires, switch and low-tension supply connect to form series circuit by conducting wire.The present invention effectively shortens experimental period, is shorten to 3 to 5 minutes by original more than half hall class；Simple with experimental implementation, safety, reliable and energy saving feature can be demonstrated, can be also grouped；Experiment effect is apparent, and experimental error is smaller, repeatable to test and ensure its experiment effect；Switch and power lights component are all positioned in demonstration box, easy to carry and store, and apparatus structure is simple.
Description
Technical field
The present invention relates to experiment equipment technical field more particularly to a kind of specific heat capacity demonstrators.
Background technology
Junior physics specific heat capacity experiment difficulty is big, and high resistance is brought to teachers' instruction and student's scientific exploration.Study carefully its original
Cause has following several respects：1. heat is not easy to control, existing specific heat capacity demonstration equipment often to dampening and is eaten with two alcolhol burners
Oil heating, it is difficult to ensure that the heat that two alcolhol burners are released in same time is equal；2. heating time is longer, the reason is that water
It is more with quantity of edible oil；3. testing, visibility is poor, and using common thermometer, student does not see the registration of thermometer；4.
Experiment has security risk, edible oil to have the danger being ignited.Specific heat capacity experimental demonstration equipment uses alcolhol burner pair in existing teaching material
Beaker heats, and fills edible oil in beaker, edible oil is due to there is the danger being ignited.Improved specific heat capacity experiment is obtained using hot
The voltage of fast heating, immersion heater is 220V, is not safe voltage, the electrical power of immersion heater brings bigger generally in 1000W or so
Edible oil ignite hidden danger.In addition immersion heater volume is bigger than normal, and the amount of required water and edible oil is more, and experimentation is bad
Control.In view of safety factor, which is often only lecture experiment, cannot arrange as grouping experiment.
Invention content
Technical problems based on background technology, the present invention proposes a kind of specific heat capacity demonstrator, easy to operate, experiment
Securely and reliably.
A kind of specific heat capacity demonstrator proposed by the present invention, the demonstrator include demonstration box, two test tubes, several conducting wires,
Switch and low-tension supply, two test tubes are fixedly arranged in demonstration box inner wall, and resistance value same resistance silk is inserted in two test tubes,
Two resistance wires, switch and low-tension supply connect to form series circuit by conducting wire.
Preferably, being inserted with electronic thermometer in two test tubes.
Preferably, the test tube nozzle is equipped with the stopper for fixed thermometer, stopper is equipped with through-hole, electron temperature
Meter plugs test tube interior by the through-hole across stopper, and resistance wire is placed in bottom in test tube.
Preferably, the demonstration box inner wall is equipped with the semicircle card being adapted to test tube, test tube is fastened on semicircle
In card.
Preferably, the power supply that it is 6V-12V that low-tension supply, which is supply voltage,.
Preferably, test tube is the test tube of 200mm*20mm specifications.
The present invention effectively shortens experimental period, is shorten to 3 to 5 minutes by original more than half hall class；With experimental implementation
Simply, safety, reliable and energy saving feature, can demonstrate, can also be grouped；Experiment effect is apparent, and experimental error is smaller, repeats real
It tests and ensures its experiment effect；Switch and power lights component are all positioned in demonstration box, easy to carry and store, and apparatus structure
Simply.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1：
As shown in Figure 1, a kind of specific heat capacity demonstrator, the demonstrator includes that 4, two specifications of demonstration box are 200mm*20mm
Test tube 1, several conducting wires 7, switch 6 and supply voltage be 6V-12V low-tension supply 5, two test tubes are fixedly arranged on the inside of demonstration box
On wall, resistance wire 2 is inserted in two test tubes, two resistance value same resistance silks, switch connect shape with low-tension supply by conducting wire
At series circuit, electronic thermometer 3 is inserted in two test tubes.
Edible oil and water will be separately added into when experimental demonstration in test tube, the probe of resistance wire and electronic thermometer is respectively positioned on liquid
Hereinafter, using the original large beaker of test tube (200mm*20mm) replacement, the amount of such water or edible oil is a little less in face, it is easier to
Heating.Resistance wire is placed in test tube, and Inner hot type effects are better than the external-heat being put in outside test tube：Just resistance wire is begun with to be wound on
The outer wall of test tube, heat dissipation is serious outward for resistance wire, the temperature difference unobvious of the Temperature Difference Ratio water of edible oil.Later, resistance wire was placed in
Liquid internal, resistance size is just the same, and two resistance series connection heating powers are just the same, and experiment effect Chang Mingxian dissipates
Hot amplitude obviously tails off.Normal temperature meter, the visibility of Enhancement test are replaced using electronic thermometer.Demonstrator of the present invention has
Effect shortens experimental period, is shorten to 3 to 5 minutes by original more than half hall class；It is simple with experimental implementation, safety, it is reliable and
Energy saving feature can be demonstrated, and can also be grouped；Experiment effect is apparent, and experimental error is smaller, repeatable to test and ensure its experiment effect
Fruit.
Further, the test tube nozzle is equipped with the stopper for fixed thermometer, and stopper is equipped with through-hole, electronic thermometer
Test tube interior is plugged across stopper by the through-hole, resistance wire is placed in bottom in test tube.Avoid heat loss：.
Further, the demonstration box inner wall is equipped with the semicircle card 8 being adapted to test tube, and test tube is fastened on semicircle card
It is interior.Test tube is scheduled on by semicircle fixing in demonstration box, switch and power lights component are all positioned in demonstration box, easy to carry
And storage, and apparatus structure is simple.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of specific heat capacity demonstrator, which is characterized in that the demonstrator includes demonstration box (4), two test tubes (1), several leads
Line (7), switch (6) and low-tension supply (5), two test tubes (1) are fixedly arranged on demonstration box (4) madial wall, in two test tubes (1)
It is inserted with resistance wire (2), two resistance value same resistance silks (2), switch (6) and low-tension supply (7) are connected by conducting wire (7) forms string
Join circuit.
2. a kind of specific heat capacity demonstrator according to claim 1, which is characterized in that be inserted with electricity in two test tubes (1)
Sub- thermometer (3).
3. a kind of specific heat capacity demonstrator according to claim 2, which is characterized in that test tube (1) nozzle is equipped with and is used for
The stopper of fixed thermometer, stopper are equipped with through-hole, and electronic thermometer (3) plugs test tube by the through-hole across stopper
(1) internal, resistance wire (2) is placed in bottom in test tube.
4. a kind of specific heat capacity demonstrator according to claim 2, which is characterized in that set on demonstration box (4) madial wall
There are the semicircle card (8) being adapted to test tube (1), test tube (1) to be fastened in semicircle card (8).
5. a kind of specific heat capacity demonstrator according to any one of claims 1-4, which is characterized in that low-tension supply (7) is
Supply voltage is the power supply of 6V-12V.
6. a kind of specific heat capacity demonstrator according to any one of claims 1-4, which is characterized in that test tube (1) is
The test tube (1) of 200mm*20mm specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810827067.0A CN108766146A (en) | 2018-07-25 | 2018-07-25 | A kind of specific heat capacity demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810827067.0A CN108766146A (en) | 2018-07-25 | 2018-07-25 | A kind of specific heat capacity demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766146A true CN108766146A (en) | 2018-11-06 |
Family
ID=63971577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810827067.0A Pending CN108766146A (en) | 2018-07-25 | 2018-07-25 | A kind of specific heat capacity demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108766146A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686009Y (en) * | 2004-03-09 | 2005-03-16 | 马振文 | Specific heat experiment demonstrating device |
| CN201237849Y (en) * | 2008-08-12 | 2009-05-13 | 黄绍端 | Joule law demonstrator |
| CN203422877U (en) * | 2013-07-27 | 2014-02-05 | 师月 | Substance specific heat capacity exploring demonstration instrument |
-
2018
- 2018-07-25 CN CN201810827067.0A patent/CN108766146A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686009Y (en) * | 2004-03-09 | 2005-03-16 | 马振文 | Specific heat experiment demonstrating device |
| CN201237849Y (en) * | 2008-08-12 | 2009-05-13 | 黄绍端 | Joule law demonstrator |
| CN203422877U (en) * | 2013-07-27 | 2014-02-05 | 师月 | Substance specific heat capacity exploring demonstration instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |