CN110118799A - A kind of building energy conservation in-situ check and test method - Google Patents
A kind of building energy conservation in-situ check and test method Download PDFInfo
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- CN110118799A CN110118799A CN201910413782.4A CN201910413782A CN110118799A CN 110118799 A CN110118799 A CN 110118799A CN 201910413782 A CN201910413782 A CN 201910413782A CN 110118799 A CN110118799 A CN 110118799A
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- heat
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- flow meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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Abstract
The invention discloses a kind of building energy conservation in-situ check and test methods, it is related to building energy conservation in-situ check and test method technical field, comprising the following steps: S1, closing: S2, heat-flow meter installation: S3, heating: S4, thermal property detection: S5, heat transfer coefficient Counting Formula and error analysis.The method of the present invention is rigorous, step is easy, the building for not installing door and window is closed by insulation board before detection, form confined space, reduce the influence of external environment, effectively raise the accuracy of building energy conservation wall winer construction data, heat transfer coefficient Counting Formula and error analysis are passed through using the detection of random multiple spot simultaneously, the wall heat transfer coefficient data measured can be made more accurate, reduce error amount, accurate, convenient and fast feasible program is provided for building energy conservation on-site test, improves detection effect.
Description
Technical field
The present invention relates to building energy conservation in-situ check and test method technical field, specifically a kind of building energy conservation on-site test side
Method.
Background technique
With the development of society, construction material and gradually energy-saving, need to carry out live inspection to it after building is built up
It surveys, detection includes thermal technology's coefficient of drawing, resistance to compression, appearance and wall.
But some are built after just building up to install door and window additional, leakproofness is inadequate, will affect when thermal technology's coefficient detects
Whole detection effect, while current thermal technology's coefficient detection is relatively simple does not have error analysis, therefore the mistake of detection data
Difference is more, impacts to whole detection data.Therefore, those skilled in the art provide a kind of building energy conservation on-site test
Method, to solve the problems mentioned in the above background technology.
Summary of the invention
The purpose of the present invention is to provide a kind of building energy conservation in-situ check and test methods, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of building energy conservation in-situ check and test method, including with
Lower step:
S1, closing: the room for being fitted without door and window is closed, to prevent from carrying out heat exchange with outside air；
S2, heat-flow meter installation: heat-flow meter is installed on to the inner surface of tested wall, while in the corresponding heat in the two sides of wall
Three thermocouples, heat-flow meter and thermocouple are installed respectively at the position of flowmeter, the touring automatic inspection of temperature, hot-fluid is connected by conducting wire
Survey instrument；
S3, heating: wall inside is heated using heater；
S4, thermal property detection: the heat of heat-flow meter is flowed through when wall temperature difference is Δ Τ according to Fourier law
Flow can be calculated by following equation:
Q=Δ Τ/(δ/λ)
With the above-mentioned temperature difference of thermocouple measurement, when thermocouple thermoelectrical potential in its measurement range relationship directly proportional to the temperature difference,
The available heat by heat-flow meter, formula are as follows:
Q=C Δ E
S5, heat transfer coefficient Counting Formula and error analysis: when conducting heat under limit, pass through the heat flow of wall
Should be equal with by the heat of heat-flow meter, it is that can calculate heat transfer coefficient, formula by the thermal resistance and resistance of heat transfer of wall are as follows:
The average value of wall heat resistance, formula can be counted according to the data of multi-measuring point are as follows:
The average value of wall heat resistance is brought into heat transfer coefficient it can be concluded that mean heat transfer coefficient, formula are as follows:
Relative measurement error are as follows:
Coefficient is passed it can be concluded that wall heat transfer coefficient field actual measurement results, formula according to relative error and evenly heat are as follows:
Kc=K ± δ K.
As further scheme of the invention: closing door and window in the S1 and use insulation board, and seam crossing is using saturating
Bright adhesive tape gluing.
As further scheme of the invention: the side of heat-flow meter and thermocouple being bonded with wall is all provided in the S2
It is equipped with silica gel medium, thermocouple uses copper/copper-constantan thermocouple.
As further scheme of the invention: q is the heat flow for passing through heat-flow meter in the S4；δ is the thickness of heat-flow meter
Degree；λ is the thermal conductivity coefficient of heat-flow meter；Δ Τ is the temperature difference on heat-flow meter two sides after wall installs heat-flow meter additional.
As further scheme of the invention: Δ E is thermoelectrical potential in the heat formula by heat-flow meter；C is heat
Flowmeter coefficient.
As further scheme of the invention: the thermal resistance of wall is R=Δ Τ/q in the S5；The resistance of heat transfer of wall is
R '=R+Ri+Re。
As further scheme of the invention: the RiFor heat exchange resistance on the inside of wall；ReResistance is changed for wall outer side heat.
Compared with prior art, the beneficial effects of the present invention are: door and window will do not installed by insulation board before present invention detection
Building closing, formed confined space, reduce the influence of external environment, effectively raise building energy conservation wall winer construction number
According to accuracy, while can to measure by heat transfer coefficient Counting Formula and error analysis using the detection of random multiple spot
Wall heat transfer coefficient data it is more accurate, reduce error amount, provide accurate, convenient and fast feasible side for building energy conservation on-site test
Case improves detection effect.
Detailed description of the invention
Fig. 1 is a kind of process step figure of building energy conservation in-situ check and test method.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of building energy conservation in-situ check and test method, comprising the following steps:
S1, closing: the room for being fitted without door and window is closed, to prevent from carrying out heat exchange with outside air；
S2, heat-flow meter installation: heat-flow meter is installed on to the inner surface of tested wall, while in the corresponding heat in the two sides of wall
Three thermocouples, heat-flow meter and thermocouple are installed respectively at the position of flowmeter, the touring automatic inspection of temperature, hot-fluid is connected by conducting wire
Survey instrument；
S3, heating: wall inside is heated using heater；
S4, thermal property detection: the heat of heat-flow meter is flowed through when wall temperature difference is Δ Τ according to Fourier law
Flow can be calculated by following equation:
Q=Δ Τ/(δ/λ)
With the above-mentioned temperature difference of thermocouple measurement, when thermocouple thermoelectrical potential in its measurement range relationship directly proportional to the temperature difference,
The available heat by heat-flow meter, formula are as follows:
Q=C Δ E
S5, heat transfer coefficient Counting Formula and error analysis: when conducting heat under limit, pass through the heat flow of wall
Should be equal with by the heat of heat-flow meter, it is that can calculate heat transfer coefficient, formula by the thermal resistance and resistance of heat transfer of wall are as follows:
The average value of wall heat resistance, formula can be counted according to the data of multi-measuring point are as follows:
The average value of wall heat resistance is brought into heat transfer coefficient it can be concluded that mean heat transfer coefficient, formula are as follows:
Relative measurement error are as follows:
Coefficient is passed it can be concluded that wall heat transfer coefficient field actual measurement results, formula according to relative error and evenly heat are as follows:
Kc=K ± δ K.
Further, door and window is closed in S1 and uses insulation board, and seam crossing is bonded using adhesive tape.
Further, the side of heat-flow meter and thermocouple being bonded with wall is provided with silica gel medium, thermocouple in S2
Using
Copper/copper-constantan thermocouple.
Further, q is by the heat flow of heat-flow meter in S4；δ is the thickness of heat-flow meter；λ is the thermal conductivity system of heat-flow meter
Number；Δ Τ is the temperature difference on heat-flow meter two sides after wall installs heat-flow meter additional.
It further, is that thermoelectrical potential (passes through temperature, the touring automatic detection of hot-fluid by Δ E in the heat formula of heat-flow meter
Instrument
Detection)；C is heat-flow meter coefficient (heat flow that hot-fluid passes through when exporting in respect of unit thermoelectrical potential is C).
Further, the thermal resistance of wall is R=Δ Τ/q in S5；The resistance of heat transfer of wall is R '=R+Ri+Re。
Further, RiFor heat exchange resistance on the inside of wall；ReResistance is changed for wall outer side heat.
In summary: the building for not installing door and window being closed by insulation board before present invention detection, confined space is formed, subtracts
The influence of few external environment effectively raises the accuracy of building energy conservation wall winer construction data, while using random more
Point detection can make the wall heat transfer coefficient data measured more smart by heat transfer coefficient Counting Formula and error analysis
Really, error amount is reduced, accurate, convenient and fast feasible program is provided for building energy conservation on-site test, improves detection effect.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of building energy conservation in-situ check and test method, which comprises the following steps:
S1, closing: the room for being fitted without door and window is closed, to prevent from carrying out heat exchange with outside air；
S2, heat-flow meter installation: heat-flow meter is installed on to the inner surface of tested wall, while in the corresponding heat-flow meter in the two sides of wall
Position at three thermocouples, heat-flow meter and thermocouple are installed respectively the touring automatic tester of temperature, hot-fluid are connected by conducting wire；
S3, heating: wall inside is heated using heater；
S4, thermal property detection: the heat flow of heat-flow meter is flowed through when wall temperature difference is Δ Τ according to Fourier law
It can be calculated by following equation:
Q=Δ Τ/(δ/λ)
It, can be with when thermocouple thermoelectrical potential in its measurement range relationship directly proportional to the temperature difference with the above-mentioned temperature difference of thermocouple measurement
Obtain the heat by heat-flow meter, formula are as follows:
Q=C Δ E
S5, heat transfer coefficient Counting Formula and error analysis:, should by the heat flow of wall when conducting heat under limit
It is equal with by the heat of heat-flow meter, it is that can calculate heat transfer coefficient, formula by the thermal resistance and resistance of heat transfer of wall are as follows:
The average value of wall heat resistance, formula can be counted according to the data of multi-measuring point are as follows:
The average value of wall heat resistance is brought into heat transfer coefficient it can be concluded that mean heat transfer coefficient, formula are as follows:
Relative measurement error are as follows:
Coefficient is passed it can be concluded that wall heat transfer coefficient field actual measurement results, formula according to relative error and evenly heat are as follows:
Kc=K ± δ K.
2. a kind of building energy conservation in-situ check and test method according to claim 1, which is characterized in that close door and window in the S1
Using insulation board, and seam crossing is bonded using adhesive tape.
3. a kind of building energy conservation in-situ check and test method according to claim 1, which is characterized in that in the S2 heat-flow meter and
The side of thermocouple being bonded with wall is provided with silica gel medium, and thermocouple uses copper/copper-constantan thermocouple.
4. a kind of building energy conservation in-situ check and test method according to claim 1, which is characterized in that q is to pass through in the S4
The heat flow of heat-flow meter；δ is the thickness of heat-flow meter；λ is the thermal conductivity coefficient of heat-flow meter；Δ Τ is heat after wall installs heat-flow meter additional
The temperature difference on flowmeter two sides.
5. a kind of building energy conservation in-situ check and test method according to claim 1, which is characterized in that described by heat-flow meter
Δ E is thermoelectrical potential in heat formula；C is heat-flow meter coefficient.
6. a kind of building energy conservation in-situ check and test method according to claim 1, which is characterized in that the heat of wall in the S5
Resistance is R=Δ Τ/q；The resistance of heat transfer of wall is R '=R+Ri+Re。
7. a kind of building energy conservation in-situ check and test method according to claim 6, which is characterized in that the RiFor on the inside of wall
Heat exchange resistance；ReResistance is changed for wall outer side heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910413782.4A CN110118799A (en) | 2019-05-17 | 2019-05-17 | A kind of building energy conservation in-situ check and test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646149A (en) * | 2019-10-17 | 2020-01-03 | 广东稳固检测鉴定有限公司 | Building energy-saving detection method |
| CN113406383A (en) * | 2021-06-08 | 2021-09-17 | 广州市林业和园林科学研究院 | Roof greening building energy-saving effect detection method |
| CN113533423A (en) * | 2021-07-21 | 2021-10-22 | 中国建筑第八工程局有限公司 | Engineering field detection method and system for wall heat transfer coefficient under non-constant temperature condition |
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| CN1721845A (en) * | 2004-07-16 | 2006-01-18 | 甘肃省建材科研设计院 | Building exterior-protected construction heat transfer coefficient on-site detecting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646149A (en) * | 2019-10-17 | 2020-01-03 | 广东稳固检测鉴定有限公司 | Building energy-saving detection method |
| CN113406383A (en) * | 2021-06-08 | 2021-09-17 | 广州市林业和园林科学研究院 | Roof greening building energy-saving effect detection method |
| CN113406383B (en) * | 2021-06-08 | 2022-08-05 | 广州市林业和园林科学研究院 | Roof greening building energy-saving effect detection method |
| CN113533423A (en) * | 2021-07-21 | 2021-10-22 | 中国建筑第八工程局有限公司 | Engineering field detection method and system for wall heat transfer coefficient under non-constant temperature condition |
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Application publication date: 20190813 |