Equipment for checking-out effect of heat insulation for building material, checking-out method and evaluation method

A technology of thermal insulation effect and building materials, applied in the direction of thermal development of materials, thermal conductivity of materials, preparation of samples for testing, etc. The conduction efficiency cannot fully reflect the actual effect of the thermal insulation material, and the reproducibility and reliability are not good.

Inactive Publication Date: 2007-02-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the two methods 1 and 3 mentioned above are very susceptible to the influence of external test environments such as temperature, air pressure, and air flow, etc., and the reproducibility and reliability are not good; although the second method can better reflect the building materials The heat transfer effect, but because the heat transfer is usually affected by the three aspects of conduction, convection and radiation, only the measurement of the heat conduction efficiency of the material cannot fully reflect the actual effect of the heat insulation material, especially for the current foreign countries. The popular high-reflection heat insulation new material only evaluates its heat insulation performance through the heat conduction property, which is somewhat one-sided; on the other hand, the test cycle of this method is long and the cost is high

Method used

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  • Equipment for checking-out effect of heat insulation for building material, checking-out method and evaluation method
  • Equipment for checking-out effect of heat insulation for building material, checking-out method and evaluation method
  • Equipment for checking-out effect of heat insulation for building material, checking-out method and evaluation method

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preparation example Construction

[0033] 1). Preparation of test sample plate

[0034] The detection device and detection method of the present invention are applicable to various building heat insulation materials, including plate materials, powder paste materials and coatings. There are different preparation methods for the test sample boards of different building insulation materials:

[0035] (1) Preparation of the test sample plate of the plate-like material: cut the plate-like material into a rectangular test sample plate, the thickness H of which is 3-100 mm. The size and thickness of the rectangular plane of the test sample plate for plate-like materials depend on the size design of the inner cavity of the box body 5 on the testing device and the material and specification of the plate-like material.

[0036] (2) Preparation of paste-like material test sample boards: Divide paste-like materials 2-3 times through forming, scraping, brushing or spraying on standard carrier boards to make uniform test sa...

Embodiment 1

[0076] Detection of heat insulation effect of heat insulation coating.

[0077] Preparation of sample plates: apply about 50g of paint samples evenly in two times on square flat glass with a weight of 524.7g, 525.3g, and 526.8g, and a size of 300×300×3mm. The mass of the paint after drying is 21.5g, 21.8g, 22.2g. After the first coating was completed, the second coating was performed after the coating was completely dry, and the time interval between the two brushings was 4 hours; at room temperature, the sample plate was naturally dried for 48 hours, and the sample plate to be tested was prepared.

[0078] Sample plate test: place the sample plate to be tested on the sample plate holder of the detection device, with the coating surface of the sample plate facing up; close the door of the device, turn on the power of the temperature inspection instrument, record the original temperature, turn on the infrared lamp (100W), and at the same time Timing, start to regularly record ...

Embodiment 2

[0081] Detection of putty heat insulation effect.

[0082] Prepare the sample plate: apply about 100g of putty sample evenly on the square flat glass with a weight of 534.2g, 535.3g, 537.6g and a size of 300×300×3mm in two times, and the mass of the putty after drying is 48.5g, 50.2g, 51.8g. After scraping the putty for the first time, wait for the second time to scrape the putty after it is completely dry, and the time interval between the two brushings should not be less than 6 hours; at room temperature, after the sample board is naturally dried for 48 hours, the sample board to be tested is prepared.

[0083] Sample plate test: place the sample plate of the test piece on the sample plate holder of the testing device, with the coating surface of the coated sample facing up; close the door of the device, turn on the power of the paperless recorder, record the original temperature, and turn on the infrared lamp (100W ), at the same time, start to regularly record the tempera...

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Abstract

A device used to detect heat isolation effect of construction material is prepared as dividing box body to be top body and bottom body and setting sample plate support between the two, arranging seal door and heating source at front surface and top surface of to body and setting the rest of top body to be hollow two-layer structure, setting bottom body to be two-layer wall structure, opening three observation hole on one side wall of bottom body and setting temperature transducer there and under sample plate support, connecting each said transducer to digital display thermometer and setting dislocated heat radiation holes on top body. The detecting method utilizing said device is also disclosed.

Description

technical field [0001] The invention relates to a detection technology for the heat insulation effect of building materials, specifically including a detection device, a detection method and an evaluation method for the heat insulation effect or performance of building materials. The international patent classification number is proposed to be Int.Cl.G01K 1 / 20 (2006.01) . technical background [0002] A large number of statistical data prove that building energy consumption accounts for about 30-40% of the total energy consumption of the whole society, of which the main energy consumption is heating and air conditioning. If the airtightness of the building can be improved and the energy transmission of walls, doors and windows can be isolated, the start-up frequency and running time of the air conditioner and the amount of heating in winter can be reduced while ensuring the same indoor temperature. The most commonly used heat insulation method is to use thermal insulation m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N25/18G01N1/28G06F19/00
Inventor 汤庆国梁金生梁广川王菲
Owner HEBEI UNIV OF TECH
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