Device and method for detecting equivalent thermal resistance of heat preservation and insulation thin material

A technology of thermal insulation and equivalent thermal resistance, applied in the field of building materials, it can solve the problems that the concept of thermal conductivity cannot fully represent the thermal performance of materials, functional coatings and ordinary coatings cannot be identified, and thermal insulation effects cannot be recognized. , to achieve high industrial application value, convenient and accurate detection methods, and avoid errors.

Pending Publication Date: 2020-07-10
ASIA PAINT SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional concept of thermal conductivity cannot fully express the thermal performance of this material, and the thermal insulation effect of various energy-saving functional coatings (thin materials) for buildings on the market has not been recognized by architectural design institutes. Therefore, there are many problems in the application of
[0004] At the same time, the cost of energy-saving functional coatings (thin materials) used in buildings will be much higher than that of ordinary coatings, but functional coatings and ordinary coatings cannot be distinguished by the naked eye after construction. How to detect the difference between these coatings and the thermal properties of coatings has become a big problem
[0005] CN102980911A discloses a detection device and detection method for the equivalent thermal resistance of heat-insulating coatings. The heat source is the sun, but this technology is an unsteady state detection method, and the error is as large as 50% due to the influence of the weather. Long, expensive, not applicable, and only suitable for thermal resistance testing of conductive heat transfer materials, not suitable for thermal resistance testing of radiation heat insulation materials
[0006] CN109085199A discloses a device and method for detecting the equivalent thermal resistance and equivalent thermal conductivity of thermal insulation coatings. Although this technology has improved the problem of testing the heat source, the heat source is stable boiling water, but in this scheme, the test of two materials Being in two independent spaces, not the same heat source, the difference in air disturbance will bring large errors to the test results, and it is impossible to obtain accurate equivalent thermal resistance
[0007] CN108896605A discloses a detection device for equivalent thermal resistance and thermal conductivity of thermal insulation coatings for buildings, but the device uses external circulating water, which will cause the water temperature in the water tank to be unbalanced, which will bring large errors to the test results

Method used

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  • Device and method for detecting equivalent thermal resistance of heat preservation and insulation thin material
  • Device and method for detecting equivalent thermal resistance of heat preservation and insulation thin material
  • Device and method for detecting equivalent thermal resistance of heat preservation and insulation thin material

Examples

Experimental program
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Effect test

Embodiment 1

[0097] This embodiment provides a detection device for the equivalent thermal resistance of heat-insulating thin-body materials, such as figure 1 As shown, the device includes a test box and a heating source 201; the test box includes an upper box 1 and a lower box 2.

[0098] A partition 103 of 40 cm is vertically arranged in the middle of the upper cabinet 1, and the material of the partition 103 is a real gold plate with a bulk density of 35, and its thermal conductivity is 0.039w·m -1 k -1 , the partition 103 divides the upper case 1 into two independent first test chambers 101 and second test chambers 102; the first test chamber 101 of the upper case 1 and the lower case 2 are provided with Test plate 1011, the test plate 1011 is a real gold plate with a thickness of 1 cm and a bulk density of 35; a comparison plate 1021 is arranged between the second test chamber 102 of the upper casing 1 and the lower casing 2, and the comparison plate 1021 It is a real gold plate wit...

Embodiment 2

[0102] This embodiment provides a detection device for equivalent thermal resistance of heat-insulating thin-body materials. The device includes a test box and a heating source; the test box includes an upper box and a lower box.

[0103] A partition of 100 cm is vertically arranged in the middle of the upper box, and the material of the partition is asbestos board, and its thermal conductivity is 0.15w·m -1 k -1 , the partition divides the upper box into two equal and independent first test chambers and second test chambers; a test board is arranged between the first test chamber and the lower box of the upper box, The test board is a 1 cm thick extruded board; a comparison board is arranged between the second test cavity of the upper box and the lower box, and the comparison board is a 1 cm thick extruded board, and its thermal conductivity is 0.03 w·m -1 k -1 ; The first test chamber and the upper side of the second test chamber of the upper box are provided with a first...

Embodiment 3

[0107] This embodiment provides a detection device for equivalent thermal resistance of heat-insulating thin-body materials. The device includes a test box and a heating source; the test box includes an upper box and a lower box.

[0108] A partition of 30 cm is vertically arranged in the middle of the upper box, and the material of the partition is a real gold plate, and its thermal conductivity is 0.039w·m -1 k -1 , the partition divides the upper box into two equal and independent first test chambers and second test chambers; a test board is arranged between the first test chamber and the lower box of the upper box, The test board is a rock wool board of 2 cm; a comparison board is arranged between the second test cavity of the upper casing and the lower cabinet, and the comparison board is a rock wool board of 2 cm, and its thermal conductivity is 0.04w. m -1 k -1 ; The first test chamber and the upper side of the second test chamber of the upper box are provided with a...

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Abstract

The invention provides a device for detecting equivalent thermal resistance of a heat preservation and insulation thin material. According to the device, a heating source is arranged in a lower-layerbox body, and an upper-layer box body is divided into a first test cavity and a second test cavity which have the same size and are independent of each other by a partition plate so that the two testcavities are independent of each other, the heat sources are the same and stable, errors caused by different heat sources are eliminated, the test box is sealed, heat exchange between the heat sourcesand the outside in the test box is isolated, and the stability of test results is guaranteed. When the device is used for detection, weather and other environmental factors do not need to be considered, the detection method is simple, chemical analysis for authenticity identification is not needed and time and labor are saved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a detection device and method for equivalent thermal resistance of heat-insulating thin-body materials. Background technique [0002] Thermal insulation coatings (thin body materials) for buildings have high-efficiency barrier heat insulation and thermal insulation effects on sunlight and wide-wavelength far-middle-infrared and thermal radiation, excellent anti-ultraviolet performance, extraordinary anti-pollution, good adhesion, Scrub resistance, acid and corrosion resistance and mildew resistance and other properties. Thermal insulation coating (thin body material) is a new type of thermal radiation barrier building thermal insulation material with excellent performance, strong applicability and high technical content in the field of modern building thermal insulation. [0003] Energy-saving functional coatings (thin body materials) for buildings use conduction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 黄祖炜陈越徐志新李金钟
Owner ASIA PAINT SHANGHAI
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