CN109900619A - A kind of in-situ check and test method of lightweight wall vapor permeation performance - Google Patents
A kind of in-situ check and test method of lightweight wall vapor permeation performance Download PDFInfo
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- CN109900619A CN109900619A CN201910342493.XA CN201910342493A CN109900619A CN 109900619 A CN109900619 A CN 109900619A CN 201910342493 A CN201910342493 A CN 201910342493A CN 109900619 A CN109900619 A CN 109900619A
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Abstract
The present invention relates to a kind of in-situ check and test methods of lightweight wall vapor permeation performance, include the following steps: (1), select wall detection position to be measured, the first confined space and the second confined space that corresponding wall face participates in enclosing is respectively set in wall inner side and outer side；(2), by the humid control of the wall detection position in the first confined space in 90%RH or more；By the humid control of the wall detection position in the second confined space in (50 ± 5) %RH；(3), when vapor reaches stable state through wall, the permeance property of vapor: g=△ m/ (△ t*A) is characterized by following wet current density calculation formula, wherein g is wet current density, and unit is kg/ (sm2)；△ m is the steam quality changing value by wall, unit kg；△ t is corresponding time change value, unit s；A is detection position area, unit m2。
Description
Technical field
The present invention relates to a kind of green building lightweight wall method for testing performance, more particularly to a kind of lightweight wall water
The in-situ check and test method of vapor permeability energy.
Background technique
Green building is carried out energetically by country, and healthy building, more and more buildings not only meet living require-ments, to comfortable
Property has higher pursuit.And gas permeability be measure building comfort important indicator and green building assessment it is main according to
According to.
National standard GB/T17146-2015 " construction material and its product water vapo(u)r transmission energy test method " defines building
Material and its product vapor permeation performance test method, are sealed in through measurement equipped with desiccant (dry method) or saturated solution
In the test glass opening of (wet process), test suite is formed, is subsequently placed in the controlled experiment work room of temperature and humidity.Due to examination
Steam partial pressure in Yan Bei neutralization test operating room is different, and the wet stream of vapor can flow through test specimen.Periodically weigh test suite
Quality can measure the vapor permeation performance under stable state.
Although the method is suitable for the laboratory testing of material vapor permeation performance, actual environment condition and experiment
Room environmental difference is larger, that is, the laboratory testing that existing test method is directed to, all environmental conditions are all perfect conditions, existing
Some methods are not particularly suited for the detection at scene.
Summary of the invention
Technical problem to be solved by the present invention lies in the above-mentioned deficiencies for improving the prior art, and providing one kind can satisfy now
The in-situ check and test method for the lightweight wall vapor permeation performance that field detecting needs.
Its technical problem to be solved can be implemented by the following technical programs.
A kind of in-situ check and test method of lightweight wall vapor permeation performance, includes the following steps:
(1), wall detection position to be measured is selected, corresponding wall face is respectively set in wall inner side and outer side and participates in enclosing
The first confined space and the second confined space of gear；
(2), by the humid control of the wall detection position in the first confined space in 90%RH or more；By the second confined air
The humid control of interior wall detection position is in (50 ± 5) %RH；
(3), when vapor reaches stable state through wall, water steaming is characterized by following wet current density calculation formula
The permeance property of gas:
G=△ m/ (△ t*A)
Wherein, g is wet current density, and unit is kg/ (sm2)；
△ m is the steam quality changing value by wall, unit kg；
△ t is corresponding time change value, unit s；
A is detection position area, unit m2。
As the further improvement of the technical program, the humidity of first confined space and the second confined space respectively by
Humidification dehumidification device is controlled.
As the further improvement of the technical program, indoor is additionally provided with for humidifying dehumidification device matter on the inside of measuring chamber
Measure the meausring apparatus of variation.
As the preferred embodiment of the present invention, further include the steps that controlling room temperature in (23 ± 5) DEG C.
Detection method by adopting the above technical scheme, detection data can more embody reality closer to actual use situation
Under the conditions of use environment, the true vapor permeation performance of wall.It is suitable for the scenes of lightweight wall vapor permeation performance
Detection can provide data support for green building assessment, compare laboratory testing, can more embody the authenticity of lightweight wall
Energy.
Detailed description of the invention
Make one to a specific embodiment of the invention with reference to the accompanying drawing to be described in detail.
Fig. 1 is that schematic diagram is arranged in specific detection part in in-situ check and test method embodiment of the present invention；
In figure: 110 --- temperature control equipment 120 --- meausring apparatus 130,230 --- humidification dehumidification device 140,
240 --- sealing device 300 --- walls
Specific embodiment
The present invention provides a kind of in-situ check and test methods of lightweight wall vapor permeation performance, equal to stablize vapor
It is even by wall, need that wall two sides formation temperature humidity is made to can be controlled in a certain range of environmental condition, make wall two
Side forms certain pressure difference.The present invention is mainly in closed device, by control humidity variation, to reach this environment item
Part.
Specific control method is as follows:
For make vapor stable and uniform by wall 300, need to can be controlled in wall indoor formation temperature humidity
A certain range of environmental condition, the temperature of indoor pass through air-conditioning or heater control (such as the temperature control equipment in figure
110), make room temperature in (23 ± 5) DEG C, humidity is controlled by humidifier, has been arranged one in wall indoor detection position
Know that the confined space (at sealing device 140) of volume, connection humidification dehumidification device 130 keep interior side wall body detection position wet
Degree is in 90%RH or more.On the other side of wall 300, position corresponding with detection position, a known volume is set
Confined space (at sealing device 240), connection humidification dehumidification device 230, makes humidity be maintained at (50 ± 5) %RH, works as vapor
When reaching stable state through wall 300, by humidifier mass change on the inside of the beginning measuring chamber of meausring apparatus 120 and relatively
The time answered, the wet current density of vapor permeation performance following formula characterize:
G=△ m/ (△ t*A)
G: wet current density, kg/ (sm2)
△ m: mass change, kg
△ t: time change, s
A: detection position area, m2。
By above control and calculation method, the present invention realizes the scene inspection of lightweight wall vapor permeation performance
It surveys, simultaneously as the wall face of corresponding detection position participates in actually inside and outside wall in the confined space that wall two sides are formed
The enclosing of corresponding confined space by means of the pressure difference on two sides realizes the control for flowing through wall vapor, and then obtains corresponding
Wet current density characterize the vapor permeation performance of wall.
Claims (4)
1. a kind of in-situ check and test method of lightweight wall vapor permeation performance, which comprises the steps of:
(1), wall detection position to be measured is selected, corresponding wall face is respectively set in wall inner side and outer side and participates in enclosing
First confined space and the second confined space；
(2), by the humid control of the wall detection position in the first confined space in 90%RH or more；It will be in the second confined space
Wall detection position humid control in (50 ± 5) %RH；
(3), when vapor reaches stable state through wall, vapor is characterized by following wet current density calculation formula
Permeance property:
G=△ m/ (△ t*A)
Wherein, g is wet current density, and unit is kg/ (sm2)；
△ m is the steam quality changing value by wall, unit kg；
△ t is corresponding time change value, unit s；
A is detection position area, unit m2。
2. the in-situ check and test method of lightweight wall vapor permeation performance according to claim 1, which is characterized in that described
The humidity of first confined space and the second confined space is controlled by humidification dehumidification device respectively.
3. the in-situ check and test method of lightweight wall vapor permeation performance according to claim 2, which is characterized in that indoor
Side is additionally provided with the meausring apparatus for humidification dehumidification device mass change on the inside of measuring chamber.
4. the in-situ check and test method of lightweight wall vapor permeation performance according to claim 1,2 or 3, feature exist
In, further include the steps that by room temperature control in (23 ± 5) DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342493.XA CN109900619A (en) | 2019-04-26 | 2019-04-26 | A kind of in-situ check and test method of lightweight wall vapor permeation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342493.XA CN109900619A (en) | 2019-04-26 | 2019-04-26 | A kind of in-situ check and test method of lightweight wall vapor permeation performance |
Publications (1)
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| CN109900619A true CN109900619A (en) | 2019-06-18 |
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| CN201910342493.XA Pending CN109900619A (en) | 2019-04-26 | 2019-04-26 | A kind of in-situ check and test method of lightweight wall vapor permeation performance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547968A (en) * | 2016-03-11 | 2016-05-04 | 东南大学 | Diffusion type concrete surface layer anti-permeability test instrument and testing method thereof |
| CN108645748A (en) * | 2018-04-20 | 2018-10-12 | 浙江大学 | Porous material vapor carry-over factor measuring device and measuring method under temperature gradient |
| CN108776098A (en) * | 2018-07-19 | 2018-11-09 | 浙江理工大学 | A kind of wall anti-permeability performance on-site detecting device |
| CN108918397A (en) * | 2018-09-15 | 2018-11-30 | 成都市创斯德机电设备有限公司 | A kind of building wall anti-permeability performance detection device |
| CN208459873U (en) * | 2018-01-09 | 2019-02-01 | 济南兰光机电技术有限公司 | A kind of sealing and circulating humidification system and moisture-vapor transmission test macro |
-
2019
- 2019-04-26 CN CN201910342493.XA patent/CN109900619A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547968A (en) * | 2016-03-11 | 2016-05-04 | 东南大学 | Diffusion type concrete surface layer anti-permeability test instrument and testing method thereof |
| CN208459873U (en) * | 2018-01-09 | 2019-02-01 | 济南兰光机电技术有限公司 | A kind of sealing and circulating humidification system and moisture-vapor transmission test macro |
| CN108645748A (en) * | 2018-04-20 | 2018-10-12 | 浙江大学 | Porous material vapor carry-over factor measuring device and measuring method under temperature gradient |
| CN108776098A (en) * | 2018-07-19 | 2018-11-09 | 浙江理工大学 | A kind of wall anti-permeability performance on-site detecting device |
| CN108918397A (en) * | 2018-09-15 | 2018-11-30 | 成都市创斯德机电设备有限公司 | A kind of building wall anti-permeability performance detection device |
Non-Patent Citations (2)
| Title |
|---|
| HELISOA RAFIDIARISON ET AL.: "Dataset for validating 1-D heat and mass transfer models within building walls with hygroscopic materials", 《BUILDING AND ENVIRONMENT》 * |
| 中华人民共和国国家质量监督检验检疫总局 等发布: "《GB/T 17146-2015 建筑材料及其制品水蒸气透过性能试验方法》", 31 May 2016, 中国标准出版社 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190618 |
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| RJ01 | Rejection of invention patent application after publication |