CN204269581U - Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance - Google Patents
Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance Download PDFInfo
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- CN204269581U CN204269581U CN201420792377.0U CN201420792377U CN204269581U CN 204269581 U CN204269581 U CN 204269581U CN 201420792377 U CN201420792377 U CN 201420792377U CN 204269581 U CN204269581 U CN 204269581U
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Abstract
The utility model discloses the pick-up unit that a kind of Dynamic Hot Box method measures component heat-conduction coefficient and thermal resistance, measures the pick-up unit of component heat-conduction coefficient and thermal resistance mainly for providing a kind of Dynamic Hot Box method being applicable to Cavity structural member.The utility model comprises a protective housing for accommodating component, protective housing is divided into hot cell, cold house by described component, be provided with in described component and run through cavity, on described protective housing casing, corresponding described cavity two ends are respectively arranged with blow vent, are provided with airflow guiding device at described blow vent place.Because the cavity of component is communicated with atmospheric environment, the utility model take into account different atmospheric environment and may impact the heat transfer character of component, so the utility model is more suitable for the component of cavity relative to method of the prior art, the heat transfer coefficient obtained and thermal resistance more press close to actual value, so have more directive significance in actual applications.
Description
Technical field
The utility model relates to the pick-up unit that a kind of Dynamic Hot Box method measures component heat-conduction coefficient and thermal resistance.
Background technology
Current is undertaken by existing national standard " mensuration-demarcation of building element steady state thermal hereditary property and protection hot cell method " (GB/T13475-2008) in the hot cell method of test in laboratory Thermal Performance of Envelope Structure.Hot cell method is divided into protection hot cell method and demarcates hot cell method, both by imitating the boundary condition that component both sides are the fluid of uniform temperature, thus measures heat transfer coefficient and the thermal resistance of component.Be specially component is placed on known environment temperature between hot cell and cold house, measure the power in air themperature and surface temperature and input hot cell at steady state, thus calculate the heat transfer character of component.
But being provided with cavity in some components, empty intracavity gas is in communication with the outside, so cavity can by the impact of atmospheric environment.Because atmospheric environment is dynamic, convert various, and said method is the mensuration of thermal resistance and the heat transfer coefficient carried out based on static materials, so on component said method being applied to cavity time, air-flow in cavity cannot be detected and can produce what kind of impact to heat-conduction coefficient and thermal resistance, testing result is closing to reality not, so said method be not suitable for the heat-conduction coefficient of the component being free chamber and the detection of thermal resistance.
Utility model content
For the problems referred to above, the utility model provides a kind of Dynamic Hot Box method being applicable to Cavity structural member to measure the pick-up unit of component heat-conduction coefficient and thermal resistance.
For achieving the above object, the utility model Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance, comprise a protective housing for accommodating component, protective housing is divided into hot cell, cold house by described component, be provided with in described component and run through cavity, on described protective housing casing, corresponding described cavity two ends are respectively arranged with blow vent, are provided with airflow guiding device at described blow vent place.
Relative to pick-up unit of the prior art, the utility model has offered blow vent on protective housing, utilizes airflow guiding device in cavity, to input air-flow from blow vent, is determined at air-flow by the heat transfer coefficient of component during cavity and thermal resistance.Because the cavity of component is communicated with atmospheric environment, the utility model take into account different atmospheric environment and may impact the heat transfer character of component, so the utility model is more suitable for the component of cavity relative to method of the prior art, the heat transfer coefficient obtained and thermal resistance more press close to actual value, so have more directive significance in actual applications.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
The component that the utility model is mentioned refers to the fender member in building, such as body of wall.
The utility model Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance, comprise the protective housing 1 of an accommodating component 2, protective housing is divided into hot cell 11, cold house 12 by described component, be provided with in described component and run through cavity 21, described protective housing casing is provided with blow vent, be respectively air intake opening 13, gas outlet 14, the opening at described air intake opening and the corresponding described cavity two ends of difference, gas outlet.Be provided with airflow guiding device at described blow vent place, utilize airflow guiding device to import air-flow in cavity.
As the further improvement of such scheme, described airflow guiding device comprises air-flow guidance unit and gas velocity regulon, so not only can introduce air-flow in cavity, can also regulate the speed of air-flow.Airflow guiding device can select the device such as air pump or fan.
Particularly, described air-flow guidance unit is be arranged on the air-flow input block of air inlet or be arranged on the air-flow suction unit at air outlet place.
Certainly, the blow vent that can also enter at air-flow and air inlet are provided with gas flow temperature regulating device, are used for regulating the intake air temperature of air-flow.
Gas flow temperature regulating device and airflow guiding device can be two devices of split, and such as airflow guiding device adopts air pump or fan.Certainly, the device that gas flow temperature regulating device and airflow guiding device also can be integrated, the such as device of similar hair dryer, can regulate wind speed, can regulate wind-warm syndrome again, makes device simple, easy to operate.
In testing process, utilize airflow guiding device to introduce controlled airflow in cavity, the speed of each controlled airflow is different, for convenience of controlling, airflow guiding device is arranged a timing unit.Concrete operations are:
The number of times introducing controlled airflow is 10-20 time, and within every 20 minutes, introduce an air-flow, it is 10 minutes that each air-flow introduces the time, and each air-flow heats up 5 degrees Celsius.
Or utilize airflow guiding device and air-flow temperature control equipment to control controlled airflow, the speed of each controlled airflow and/or wind speed difference, for convenience of controlling, gas flow temperature regulating device arranges a timing unit simultaneously.Concrete operations are: within every 15 minutes, introduce an air-flow, it is 10 minutes that each air-flow introduces the time, increase air-flow at every turn or reduce gas velocity with stepped-style.
Certainly, the operation introducing controlled airflow is not limited to above-mentioned two kinds, and concrete introducing method is determined in practice as the case may be.
Speed and/or the intake air temperature of each controlled airflow introduced in cavity are different.Namely the variable of each controlled airflow can be speed, also can be intake air temperature, also can be the combination of speed and intake air temperature.
Because atmospheric environment not only has wind speed, temperature, also have the variablees such as humidity, so the present invention can also arrange an airflow humidity regulating device at blow vent place, such as humidifier, dehumidifier etc.
The utility model is the pick-up unit for the component having cavity, relative to pick-up unit of the prior art, improvements of the present utility model are protective housing have been offered blow vent, and the Acquire and process device etc. as hot cell, cold house's inner heating device or refrigerating plant, air themperature pick-up unit, surface temperature detector, temperature all adopts device conventional in prior art.
Utilize airflow guiding device in cavity, input the air-flow of friction speed, gas flow temperature regulating device is utilized to control the intake air temperature of air-flow, airflow humidity regulating device is utilized to regulate the humidity of air-flow, make different controlled airflows to simulate various atmospheric environment, thus learn whether different atmospheric environment can have influence on the heat transfer character of component.If any impact, under different atmospheric environments, what kind of the heat transfer character of component has change.
Because the cavity of the component having cavity is communicated with atmospheric environment, the utility model take into account different atmospheric environment and may impact the heat transfer character of component, so the utility model is more suitable for the component of cavity relative to method of the prior art, the heat transfer coefficient obtained and thermal resistance more press close to actual value, so have more directive significance in actual applications.
Above; be only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should define with claim is as the criterion.
Claims (8)
1. the pick-up unit of a Dynamic Hot Box method measurement component heat-conduction coefficient and thermal resistance, comprise a protective housing for accommodating component, protective housing is divided into hot cell, cold house by described component, be provided with in described component and run through cavity, it is characterized in that: on described protective housing casing, corresponding described cavity two ends are respectively arranged with blow vent, are provided with airflow guiding device at described blow vent place.
2. Dynamic Hot Box method according to claim 1 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: described airflow guiding device comprises air-flow guidance unit and gas velocity regulon.
3. Dynamic Hot Box method according to claim 1 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: described airflow guiding device is air pump or fan.
4. Dynamic Hot Box method according to claim 1 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: the blow vent place entered at air-flow is provided with gas flow temperature regulating device.
5. Dynamic Hot Box method according to claim 4 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: described gas flow temperature regulating device and described airflow guiding device are structure as a whole device.
6. Dynamic Hot Box method according to claim 1 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: described airflow guiding device is provided with timing unit.
7. Dynamic Hot Box method according to claim 4 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: described temperature control equipment is provided with timing unit.
8. Dynamic Hot Box method according to claim 1 measures the pick-up unit of component heat-conduction coefficient and thermal resistance, it is characterized in that: be provided with airflow humidity regulating device at described blow vent place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792377.0U CN204269581U (en) | 2014-12-12 | 2014-12-12 | Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792377.0U CN204269581U (en) | 2014-12-12 | 2014-12-12 | Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance |
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| Publication Number | Publication Date |
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| CN204269581U true CN204269581U (en) | 2015-04-15 |
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| CN201420792377.0U Expired - Fee Related CN204269581U (en) | 2014-12-12 | 2014-12-12 | Dynamic Hot Box method measures the pick-up unit of component heat-conduction coefficient and thermal resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458801A (en) * | 2014-12-12 | 2015-03-25 | 中冶建筑研究总院有限公司 | Detection device and method for measuring heat conduction coefficient and heat resistance of component by adopting dynamic hot-box method |
| CN111537557A (en) * | 2020-05-29 | 2020-08-14 | 山东雪圣电器有限公司 | Performance test method, system, medium and equipment of total heat exchange membrane |
-
2014
- 2014-12-12 CN CN201420792377.0U patent/CN204269581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458801A (en) * | 2014-12-12 | 2015-03-25 | 中冶建筑研究总院有限公司 | Detection device and method for measuring heat conduction coefficient and heat resistance of component by adopting dynamic hot-box method |
| CN111537557A (en) * | 2020-05-29 | 2020-08-14 | 山东雪圣电器有限公司 | Performance test method, system, medium and equipment of total heat exchange membrane |
| CN111537557B (en) * | 2020-05-29 | 2023-03-14 | 山东雪圣电器有限公司 | Performance test method, system, medium and equipment of total heat exchange membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150415 Termination date: 20191212 |