CN201945569U - Device for measuring specific heat capacity of products - Google Patents
Device for measuring specific heat capacity of products Download PDFInfo
- Publication number
- CN201945569U CN201945569U CN2011200266628U CN201120026662U CN201945569U CN 201945569 U CN201945569 U CN 201945569U CN 2011200266628 U CN2011200266628 U CN 2011200266628U CN 201120026662 U CN201120026662 U CN 201120026662U CN 201945569 U CN201945569 U CN 201945569U
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- baking oven
- oven
- measuring
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a device for measuring specific heat capacity of products, which comprises a measuring oven (1), a water container (2), water media (21), a first temperature sensor (3), a second temperature sensor (4), a preheating oven (6), a heat insulation valve (7) and a connecting channel (8). The water container for holding the water media is arranged inside the measuring oven, the first temperature sensor arranged in the water container is used for detecting temperature of the water media, and the second temperature sensor arranged in the measuring oven is used for detecting air temperature of the measuring oven, and the device automatically controls the air temperature of the measuring oven to change as the water media temperature. The preheating oven is installed above the measuring oven, and the connecting channel which is provided with the heat insulation valve is arranged below the preheating oven and above the measuring oven. By means of decreasing heat waste in the process of specific heat capacity measuring maximumly, the device can measure the specific heat capacity of the products without manufacturing the products into standard samples, thereby achieving the aim of manufacturing enterprises of measuring the specific heat capacity of the finished products.
Description
Technical field
The utility model relates to a kind of device of measuring the object specific heat capacity, is meant that specifically manufacturing enterprise is used for manufactured goods are carried out a kind of device of measuring the goods specific heat capacity of whole specific heat capacity test.
Background technology
The specific heat capacity of prior art test object, elder generation's cutting sampling on testee is made the sample piece of standard specification, again the sample piece is placed the heated at constant temperature baking oven preheated one-section time, make the equilibrium of sample piece internal and external temperature reach standard preheat temperature value, then the sample piece after the preheating is transferred in the reference fluid water that quality is determined, temperature is determined, measure the temperature rise number of degrees of WATER AS FLOW MEDIUM water temperature, ask and calculate the heat that WATER AS FLOW MEDIUM obtains, and then ask the specific heat capacity of calculating the detected sample piece.
The method of prior art test object specific heat capacity runs into following problem when being applied to manufacturing enterprise: manufacturing enterprise need carry out whole specific heat capacity test to the manufactured goods object, for example, the contact of device for switching, the element that bimetallic strip is made, these manufactured goods objects are not to be made of same substance, and can not take a sample and make the sample piece of standard specification, in addition, if measured object is thicker, it is longer that the measured object internal heat is delivered in the WATER AS FLOW MEDIUM needed heat balance time, and the time is long more, the temperature rise heat of WATER AS FLOW MEDIUM is just big more by the heat waste that air distributes, thereby has reduced the precision that detects data; If measured object is book too, then in measured object was transferred to process the WATER AS FLOW MEDIUM from constant temperature oven, measured object can reduce the precision that detects data equally by the large percentage of air dissipated heat.Because the heat waste of measured object and WATER AS FLOW MEDIUM heat transferred ambient air in the mensuration process is big and can not ignore, cause the specific heat capacity of goods to measure the precision reduction, therefore, prior art exists incompatibility manufacturing enterprise the manufactured goods object to be carried out the problems and shortcomings of whole specific heat capacity test.
Summary of the invention
Problems and shortcomings at above-mentioned prior art existence, the utility model adopts the water receptacle that will fill WATER AS FLOW MEDIUM to place and measures baking oven, first temperature sensor is set in water receptacle detects the WATER AS FLOW MEDIUM water temperature, second temperature sensor is set in measuring baking oven comes temperature in the detection assay baking oven, the water temperature that makes the temperature of measuring in the baking oven follow WATER AS FLOW MEDIUM by automatic control changes; In addition, preheating oven is arranged on the top of measuring baking oven, below the inside of preheating oven with above the inside of measuring baking oven an interface channel is being set, the lower end of interface channel is facing to measuring the suitable for reading of the interior water receptacle of baking oven, interface channel is provided with a temperature that is used for isolating preheating oven and the measures baking oven technical scheme of the heat insulation valve of mutual interference mutually in the position of the inside of preheating oven, a kind of device of measuring the goods specific heat capacity is provided, be intended to by reducing the heat waste of measured object and WATER AS FLOW MEDIUM heat transferred ambient air in specific heat capacity mensuration process after the preheating to greatest extent, make the mensuration of specific heat capacity need not to make standard sample, reach adaptation manufacturing enterprise the manufactured goods object is carried out the purpose that whole specific heat capacity is measured.
The purpose of this utility model is achieved in that a kind of device of measuring the goods specific heat capacity, comprise and measure baking oven, water receptacle, WATER AS FLOW MEDIUM, first temperature sensor, second temperature sensor, preheating oven, heat insulation valve, interface channel, wherein: described mensuration baking oven is by microprocessor control, possesses the Electric heat oven of temperature automatically controlled, demonstration, memory function; Measure first temperature sensor and second temperature sensor of NTC thermo-sensitive resistor and two temperature sensors that are connected with the microprocessor of measuring baking oven by heat-resisting wire that are provided with the NTC thermo-sensitive resistor in the baking oven; Wherein, first temperature sensor is used to detect the water temperature of the described WATER AS FLOW MEDIUM of feedback, and second temperature sensor is used for detecting the air themperature that feedback is measured baking oven, and places the inner space of measuring baking oven;
Described water receptacle is a glass beaker, fills WATER AS FLOW MEDIUM in the water receptacle, and WATER AS FLOW MEDIUM is a pure water;
Water receptacle is being contained WATER AS FLOW MEDIUM and is being placed described mensuration baking oven; Described first temperature sensor places the WATER AS FLOW MEDIUM of water receptacle;
Described preheating oven is the electric heating constant temperature baking oven that is used for the preheating measured object; Preheating oven is arranged on the top of described mensuration baking oven, the top of the below of the inside of preheating oven and the inside of measuring baking oven be provided with one in outside heat insulation interface channel, the lower end of interface channel is facing to measuring the suitable for reading of water receptacle in the baking oven, and interface channel is provided with a temperature that is used for isolating preheating oven and the mensuration baking oven heat insulation valve of mutual interference mutually in the position of the inside of preheating oven.
Workflow
Simultaneously, measure first temperature sensor in the baking oven and second temperature sensor and measure temperature in the baking oven and follow the water temperature of WATER AS FLOW MEDIUM and change, measure promptly that temperature in the baking oven follows that the water temperature of WATER AS FLOW MEDIUM raises and rising and being consistent by the microprocessor control of automaticallying switch;
Enter difference between the temperature value that measured object and WATER AS FLOW MEDIUM after the temperature value of the WATER AS FLOW MEDIUM of moment before the WATER AS FLOW MEDIUM and the preheating reach the WATER AS FLOW MEDIUM after the thermal equilibrium by first temperature sensor recording medium water measured object after preheating, be the temperature rise value of the WATER AS FLOW MEDIUM water temperature before and after measured object and the WATER AS FLOW MEDIUM thermal equilibrium after the preheating, just can ask the specific heat capacity of calculating measured object;
If: the specific heat capacity of measured object is C
3
Known: the weight of measured object is M
3The specific heat capacity of WATER AS FLOW MEDIUM is C
1, weight is M
1The specific heat capacity of glass beaker is C
2, weight is M
2
Record: the temperature rise value of WATER AS FLOW MEDIUM water is Δ t
1The temperature reduction value of measured object is Δ t
2
Relational expression is then arranged:
(C
1·M
1+C
2·M
2)·Δt
1＝C
3·M
3·Δt
2；
So specific heat capacity C of measured object
3=(C
1M
1+ C
2M
2) Δ t
1/ (M
3Δ t
2).
Principle of work
In step 2, measuring first temperature sensor in the baking oven and second temperature sensor controls the temperature of measuring in the baking oven automatically by microprocessor and follows the water temperature of WATER AS FLOW MEDIUM and change, and follow and be consistent, according to the second law of thermodynamics, when equating, two object temperatures do not have the transmission of heat; Because the temperature in the mensuration baking oven is followed WATER AS FLOW MEDIUM water temperature rising variation and is consistent, air is not lost towards periphery for heat in the WATER AS FLOW MEDIUM, the temperature rise that has guaranteed WATER AS FLOW MEDIUM to absorb liberated heat when the measured object temperature reduces after the preheating and obtained does not have heat waste, measured object and WATER AS FLOW MEDIUM have been solved after the minimizing preheating in reaching thermally equilibrated process, especially thermally equilibrated process time is longer, the heat waste problem of heat transferred ambient air; Simultaneously, be limited enclosure space owing to measure baking oven, the water temperature that the temperature in measuring baking oven is followed WATER AS FLOW MEDIUM changes and measures that air humidity is in state of saturation in the baking oven when changing, and therefore, WATER AS FLOW MEDIUM is few because of the mass loss of evaporation, can ignore;
Preheating oven is arranged on the top of measuring baking oven and heat insulation valve and interface channel are set, avoided shifting the heat waste of measured object after the preheating, solved the heat waste problem that reduces heat transferred ambient air in the process that measured object after the preheating is transferred to WATER AS FLOW MEDIUM by instrument;
Because three temperature values, it is the water temperature after initial temperature, the initial temperature of measured object, the heat interchange of WATER AS FLOW MEDIUM finished, all be under the steady temperature situation, to read, thereby avoided making the problem of test findings generation error to occur because of laboratory technician's self diathesis is not high.
Above-mentioned, the utility model adopts the water receptacle that will fill WATER AS FLOW MEDIUM to place and measures baking oven, first temperature sensor is set in water receptacle detects the WATER AS FLOW MEDIUM water temperature, second temperature sensor is set in measuring baking oven comes temperature in the detection assay baking oven, the water temperature that makes the temperature of measuring in the baking oven follow WATER AS FLOW MEDIUM by automatic control changes; In addition, preheating oven is arranged on the top of measuring baking oven, below the inside of preheating oven with above the inside of measuring baking oven an interface channel is being set, the lower end of interface channel is facing to measuring the suitable for reading of the interior water receptacle of baking oven, interface channel is provided with a temperature that is used for isolating preheating oven and the measures baking oven technical scheme of the heat insulation valve of mutual interference mutually in the position of the inside of preheating oven, overcome prior art and had incompatible problems and shortcomings of the manufactured goods object being carried out whole specific heat capacity test, a kind of device of measuring the goods specific heat capacity that is provided, by reducing the heat waste of measured object and WATER AS FLOW MEDIUM heat transferred ambient air in specific heat capacity mensuration process after the preheating to greatest extent, make the mensuration of specific heat capacity need not to make standard sample, reached adaptation manufacturing enterprise the manufactured goods object is carried out the purpose that whole specific heat capacity is measured.
Description of drawings
Fig. 1 is a kind of theory structure synoptic diagram of measuring the device of goods specific heat capacity of the present utility model.
Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but should not be construed as any restriction of the present utility model.
Among the figure: measure baking oven 1, water receptacle 2, WATER AS FLOW MEDIUM 21, first temperature sensor 3, second temperature sensor 4, measured object 5, preheating oven 6, heat insulation valve 7, interface channel 8.
Embodiment
Consult Fig. 1, a kind of device of measuring the goods specific heat capacity of the present utility model, comprise and measure baking oven 1, water receptacle 2, WATER AS FLOW MEDIUM 21, first temperature sensor 3, second temperature sensor 4, preheating oven 6, heat insulation valve 7, interface channel 8, wherein: described mensuration baking oven 1 is by microprocessor control, possesses the Electric heat oven of temperature automatically controlled, demonstration, memory function; Measure first temperature sensor 3 and second temperature sensor 4 of NTC thermo-sensitive resistor and two temperature sensors that are connected with the microprocessor of measuring baking oven 1 by heat-resisting wire that are provided with the NTC thermo-sensitive resistor in the baking oven 1; Wherein, first temperature sensor 3 is used to detect the water temperature of the described WATER AS FLOW MEDIUM 21 of feedback, and second temperature sensor 4 is used for detecting the air themperature that feedback is measured baking oven 1, and places the inner space of measuring baking oven 1;
Described water receptacle 2 is a glass beaker, fills WATER AS FLOW MEDIUM 21 in the water receptacle 2, and WATER AS FLOW MEDIUM 21 is a pure water;
Described preheating oven 6 is for being used for the electric heating constant temperature baking oven of preheating measured object 5; Preheating oven 6 is arranged on the top of described mensuration baking oven 1, the top of the below of the inside of preheating oven 6 and the inside of measuring baking oven 1 be provided with one in outside heat insulation interface channel 8, the lower end of interface channel 8 is facing to measuring the suitable for reading of water receptacle 2 in the baking oven 1, and interface channel 8 is provided with a temperature that is used for isolating preheating oven 6 and the mensuration baking oven 1 heat insulation valve 7 of mutual interference mutually in the position of the inside of preheating oven 6.
Workflow
Simultaneously, measure first temperature sensor 3 in the baking oven 1 and second temperature sensor 4 and measure temperature in the baking oven 1 and follow the water temperature of WATER AS FLOW MEDIUM 21 and change, measure promptly that temperature in the baking oven 1 follows that the water temperature of WATER AS FLOW MEDIUM 21 raises and rising and being consistent by the microprocessor control of automaticallying switch;
Enter difference between the temperature value that measured object 5 and WATER AS FLOW MEDIUM 21 after the temperature value of the WATER AS FLOW MEDIUM 21 of moment before the WATER AS FLOW MEDIUM 21 and the preheating reach the WATER AS FLOW MEDIUM 21 after the thermal equilibrium by first temperature sensor, 3 recording medium water 21 measured object 5 after preheating, be the temperature rise value of WATER AS FLOW MEDIUM 21 water temperatures before and after measured object 5 and WATER AS FLOW MEDIUM 21 thermal equilibriums after the preheating, just can ask the specific heat capacity of calculating measured object 5;
If: the specific heat capacity of measured object 5 is C
3
Known: the weight of measured object 5 is M
3The specific heat capacity of WATER AS FLOW MEDIUM 21 is C
1, weight is M
1The specific heat capacity of glass beaker is C
2, weight is M
2
Record: the temperature rise value of WATER AS FLOW MEDIUM 21 water is Δ t
1The temperature reduction value of measured object 5 is Δ t
2
Relational expression is then arranged:
(C
1·M
1+C
2·M
2)·Δt
1＝C
3·M
3·Δt
2；
So specific heat capacity C of measured object 5
3=(C
1M
1+ C
2M
2) Δ t
1/ (M
3Δ t
2).
Principle of work
In step 2, measuring first temperature sensor 3 in the baking oven 1 and second temperature sensor 4 controls the temperature of measuring in the baking oven 1 automatically by microprocessor and follows the water temperature of WATER AS FLOW MEDIUM 21 and change, and follow and be consistent, according to the second law of thermodynamics, when equating, two object temperatures do not have the transmission of heat; Because the temperature in the mensuration baking oven 1 is followed WATER AS FLOW MEDIUM 21 water temperatures rising variation and is consistent, air is not lost towards periphery for heat in the WATER AS FLOW MEDIUM 21, the temperature rise that has guaranteed WATER AS FLOW MEDIUM 21 to absorb liberated heat when measured object 5 temperature reduce after the preheatings and obtained does not have heat waste, measured object 5 and WATER AS FLOW MEDIUM 21 have been solved after the minimizing preheating in reaching thermally equilibrated process, especially thermally equilibrated process time is longer, the heat waste problem of heat transferred ambient air; Simultaneously, because measuring baking oven 1 be limited enclosure space, the water temperature that the temperature in measuring baking oven 1 is followed WATER AS FLOW MEDIUM 21 change and when changing in the mensuration baking oven 1 air humidity be in state of saturation, therefore, WATER AS FLOW MEDIUM 21 is few because of the mass loss of evaporation, can ignore;
Preheating oven 6 is arranged on the top of measuring baking oven 1 and heat insulation valve 7 and interface channel 8 are set, avoided shifting the heat waste of measured object 5 after the preheating, solved the heat waste problem that reduces heat transferred ambient air in the process that measured object 5 after the preheating is transferred to WATER AS FLOW MEDIUM 21 by instrument;
Because three temperature values, it is the water temperature after initial temperature, the initial temperature of measured object 5, the heat interchange of WATER AS FLOW MEDIUM 21 finished, all be under the steady temperature situation, to read, thereby avoided making the problem of test findings generation error to occur because of laboratory technician's self diathesis is not high.
Claims (1)
1. device of measuring the goods specific heat capacity, it is characterized in that: comprise and measure baking oven (1), water receptacle (2), WATER AS FLOW MEDIUM (21), first temperature sensor (3), second temperature sensor (4), preheating oven (6), heat insulation valve (7), interface channel (8), wherein: described mensuration baking oven (1) is by microprocessor control, possesses the Electric heat oven of temperature automatically controlled, demonstration, memory function; Measure first temperature sensor (3) and second temperature sensor (4) of NTC thermo-sensitive resistor and two temperature sensors that are connected with the microprocessor of measuring baking oven (1) by heat-resisting wire that are provided with the NTC thermo-sensitive resistor in the baking oven (1); Wherein, first temperature sensor (3) is used for detecting the water temperature of the described WATER AS FLOW MEDIUM of feedback (21), and second temperature sensor (4) is used for detecting the air themperature that feedback is measured baking oven (1), and places the inner space of measuring baking oven (1);
Described water receptacle (2) is a glass beaker, fills WATER AS FLOW MEDIUM (21) in the water receptacle (2), and WATER AS FLOW MEDIUM (21) is a pure water; Water receptacle (2) is being contained WATER AS FLOW MEDIUM (21) and is being placed described mensuration baking oven (1);
Described first temperature sensor (3) places the WATER AS FLOW MEDIUM (21) of water receptacle (2);
Described preheating oven (6) is for being used for the electric heating constant temperature baking oven of preheating measured object (5); Preheating oven (6) is arranged on the top of described mensuration baking oven (1), the top of the below of the inside of preheating oven (6) and the inside of measuring baking oven (1) be provided with one in outside heat insulation interface channel (8), the lower end of interface channel (8) is facing to measuring the suitable for reading of water receptacle (2) in the baking oven (1), and interface channel (8) is provided with a temperature that is used for isolating preheating oven (6) and mensuration baking oven (1) the heat insulation valve (7) of mutual interference mutually in the position of the inside of preheating oven (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200266628U CN201945569U (en) | 2011-01-21 | 2011-01-21 | Device for measuring specific heat capacity of products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200266628U CN201945569U (en) | 2011-01-21 | 2011-01-21 | Device for measuring specific heat capacity of products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945569U true CN201945569U (en) | 2011-08-24 |
Family
ID=44472909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200266628U Expired - Lifetime CN201945569U (en) | 2011-01-21 | 2011-01-21 | Device for measuring specific heat capacity of products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116750A (en) * | 2011-01-21 | 2011-07-06 | 宁波双林汽车部件股份有限公司 | Device for measuring specific heat capacity of product |
| CN107290382A (en) * | 2017-08-03 | 2017-10-24 | 合肥新士鑫机械科技有限公司 | A kind of machine components thermal absorptivity detecting and controlling system |
-
2011
- 2011-01-21 CN CN2011200266628U patent/CN201945569U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116750A (en) * | 2011-01-21 | 2011-07-06 | 宁波双林汽车部件股份有限公司 | Device for measuring specific heat capacity of product |
| CN107290382A (en) * | 2017-08-03 | 2017-10-24 | 合肥新士鑫机械科技有限公司 | A kind of machine components thermal absorptivity detecting and controlling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2013533832A5 (en) | System and method for heating or cooling the contents of a container | |
| EP3011290B1 (en) | Bioreactor system comprising a temperature sensor means | |
| EP3004745A1 (en) | Wireless culinary probe calibration method and system | |
| CN105078266A (en) | Heating device for heating food in a container, in particular milk in a baby bottle | |
| WO2012012437A3 (en) | Temperature response sensing and classification of analytes with porous optical films | |
| CN105548246B (en) | Steady state method thermal conductivity measurement experimental system and measuring method | |
| CN102116750B (en) | Device for measuring specific heat capacity of product | |
| CN201945569U (en) | Device for measuring specific heat capacity of products | |
| CN207675681U (en) | A kind of materials for wall thermal conductivity measuring apparatus | |
| DK200800814A (en) | Thermal switch calibration apparatus and method | |
| CN106645274B (en) | A kind of sample dynamic thermal capacitance measuring method applied to adiabatic reaction calorimetric | |
| KR102270616B1 (en) | Bioreactor system with a temperature sensor | |
| CN104977953B (en) | A kind of portable rotation viscometer calibration thermostat | |
| CN203619308U (en) | Cooker capable of accurately sensing temperature of inner pot | |
| CN104792821B (en) | Miniature calorimeter | |
| CN104359935A (en) | Melting point detector | |
| CN103063700B (en) | Method for synchronously measuring apparent thermophysical property and autoignition temperature of combustible particles | |
| CN201355350Y (en) | Temperature-controlled heat flow meter building enclosure structure heat transfer coefficient detector | |
| CN103217455A (en) | Method of testing coal spontaneous combustion tendentiousness by water bath heat insulation | |
| CN205449641U (en) | Metal bath optics temperature measuring device | |
| CN205786052U (en) | A kind of heater and coagulation analysis system | |
| CN107421981B (en) | A kind of small temp difference measurer | |
| CN103134914A (en) | Microclimate instrument for measuring fabric moisture resistance and method thereof | |
| CN203455299U (en) | Heat-flux-type differential scanning calorimeter | |
| CN105571747A (en) | Heat flow detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |