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Testing device and testing method for thermal performance of phase-change temperature regulation building material

A technology of testing equipment and testing methods, which is applied in the investigation stage/state change, etc., can solve the problems of inability to test large-scale phase-change temperature-adjusting building materials, etc., and achieve the effect of simple testing methods and low manufacturing costs

Active Publication Date: 2010-09-22
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are limitations in the testing equipment and methods for phase-change temperature-adjusting building materials at home and abroad. They only test the thermal properties of phase-change building materials qualitatively or simply test the phase-change latent heat or phase-change temperature, and cannot test large-scale phase-change temperature-regulating materials. building materials

Method used

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  • Testing device and testing method for thermal performance of phase-change temperature regulation building material
  • Testing device and testing method for thermal performance of phase-change temperature regulation building material
  • Testing device and testing method for thermal performance of phase-change temperature regulation building material

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preparation example Construction

[0050] 2) Preparation of samples

[0051] The sample to be tested in the test of the present invention should be a finished product state, and the total volume of the sample is ≥0.03m 3 . If the sample is in liquid or granular state (particle size ≤ 3mm), it can be directly put into the sample container for testing; Put it into the sample container, and weigh the mass of the sample (denoted as m). After the sample is installed, install 3 thermocouples on the outside to the middle of the sample respectively (such as figure 1 shown). Then cover the container lid, at the laboratory temperature (T 0 ) for 24 hours.

[0052] 3) Preparation of hot water

[0053] Take 10L of pure water, heat the water to above 80°C with a heating device, then pour it into the incubator, and cover the incubator with the lid.

[0054] 4) Addition of samples

[0055] After adding hot water for 3 hours, open the lid of the incubator, quickly put the prepared sample container into the water in the...

example 1

[0073] Example 1: The sample used in this example is expanded perlite-paraffin organic-inorganic composite phase change particles, and the test operation is carried out according to the above test steps. The specific values ​​​​in the operation are:

[0074] Ambient temperature T in step 1) 0 18°C; in step 2), the sample particle size is 0.5-2.0mm, the size of the sample container is 0.3m×0.3m×0.3m, and the total sample volume is 0.027m 3 , the mass m is 7.56kg; step 4) use the incubator with a volume of 0.53m×0.32m×0.32m, and record the hot water temperature T h is 65°C, the equilibrium final temperature T recorded in step 5) 4 43.8°C, T 5 is 60.1°C, the sample heating curve drawn in step 6) is as follows figure 2 shown. Depend on figure 2 From the heating curve of the medium sample, it can be seen that the sample has a first temperature inflection point about 35 minutes after the sample is put into the sample, and a second temperature inflection point at 130 minutes, ...

example 2

[0077] Example 2: The sample used in this example is a phase-change tempering mortar mixed with 50% expanded perlite-paraffin organic-inorganic composite phase-change particles. Perform the test operation according to the above test steps, the specific values ​​in the operation are:

[0078] Ambient temperature T in step 1) 0 18°C; in step 2), the sample particle size is 0.5-2mm, the sample container size is 0.3m×0.3m×0.3m, and the total sample volume is 0.027m 3 , the mass m is 10.8kg; step 4) use the incubator with a volume of 0.53m×0.32m×0.32m, and record the hot water temperature T h is 65°C, the equilibrium final temperature T recorded in step 5) 4 45.6°C, T 5 is 60.2°C, the sample heating curve drawn in step 6) is as follows image 3 shown. Depend on image 3 From the heating curve of the medium sample, it can be seen that the sample has a first temperature inflection point when the temperature is measured for about 43 minutes, and a second temperature inflection p...

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Abstract

The invention relates to a testing device and testing method for the thermal performance of phase-change temperature regulation building material, belonging to the field of material testing. The testing device is formed by a heating device, an electronic balance, an incubator, a thermal resistance, a paperless recorder, a computer and the like in a connecting way. The testing method is that the principle that the released heat of hot water in an insulation system is equal to the sum of the heat absorbed by the phase-change material and the heat dissipated by the insulation system is used for testing the phase-change latent heat of the phase-change building material. The principle that the temperature of the phase-change material is kept within a certain temperature range in the process of phase change is used for testing the phase-change temperature of the phase-change building material. The invention has the advantages of simple testing device, low cost, simple and feasible testing method and high reliability, and can be used for testing the phase-change latent heat and the phase-change temperature of large-size phase-change temperature regulation building material.

Description

technical field [0001] The invention relates to the technical field of testing of building materials, and mainly relates to a testing system for the thermal performance of building materials with a phase change temperature adjustment function. Background technique [0002] Phase change building materials (PCBM, phase change building materials) are phase change materials added to building materials, which can not only be used as bearing or decorative materials, but also store more heat. The research and promotion of this kind of functional building materials can reduce building energy consumption and achieve the purpose of energy saving. The phase change material (PCM) compounded into the building material undergoes a phase change at its transition temperature, which can absorb the heat of the environment and release heat outside when it is lower than the transition temperature. The transformation process of the phase change material is at its transition temperature. conduct...

Claims

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Application Information

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IPC IPC(8): G01N25/12
Inventor 李海建冀志江王静王继梅王晓燕丁楠
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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