Device for testing phase-change latent heat and phase-change temperature
A technology of phase change temperature and phase test, applied in the direction of material thermal development, investigation stage/state change, etc., can solve the problems that cannot truly reflect the thermal performance of phase change materials, achieve reduced heat loss, easy access, and accurate test data Effect
Active Publication Date: 2020-04-17
CHINA BUILDING MATERIALS ACAD
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a device for testing phase change latent heat and phase change temperature, the technical problem to be solved is that existing devices cannot truly reflect the thermal properties of phase change materials
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[0030] In order to further illustrate the technical means and effects that the present invention takes to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation of the device for testing phase change latent heat and phase change temperature proposed according to the present invention Mode, structure, feature and effect thereof are as follows in detail. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures or characteristics of one or more embodiments may be combined in any suitable manner.
[0031] Such as figure 1 and 2 Shown, a kind of device for testing latent heat of phase change and phase change temperature that one embodiment of the present invention proposes, it comprises:
[0032] Outer insulation cavity 2,
[0033] The inner heat insulating cavity 1 is...
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Abstract
The invention relates to a device for testing phase-change latent heat and phase-change temperature, which comprises an outer heat insulation cavity, an inner heat insulation cavity, a sample container and temperature sensors. The inner heat insulation cavity is located in the outer heat insulation cavity, a first cavity is formed between the inner heat insulation cavity and the outer heat insulation cavity, and the first cavity is used for containing a fluid medium. The sample container is used for placing a phase change material and is located in the inner heat insulation cavity, a second cavity is formed between the sample container and the inner heat insulation cavity, and the second cavity is used for containing a fluid medium. The temperature sensors are respectively placed in the inner heat insulation cavity and the sample container and are used for measuring the temperature of the fluid medium and the temperature of a sample. The outer heat insulation cavity is arranged outsidethe inner heat insulation cavity, so that the temperature of the fluid medium in the inner heat insulation cavity is not easily influenced by the external environment, data measured by the temperature sensors can truly reflect the temperature change condition of the phase-change material, the test data is more accurate, and the phase-change latent heat and the phase-change temperature of the phase-change material in the actual application process are further obtained.
Description
technical field [0001] The invention relates to the testing field of phase change materials, in particular to a device for testing phase change latent heat and phase change temperature. Background technique [0002] Phase change materials have a high energy storage density, and can store and utilize thermal energy through the heat exchange between the phase change system and the environment under nearly isothermal conditions, and respond to sharp changes in ambient temperature. Phase change materials are used in buildings In the field of energy saving, it can reduce the heat flow inside and outside, provide a comfortable living environment, reduce energy consumption, and achieve the purpose of energy saving. [0003] Phase change materials have good temperature adjustment performance and large latent heat. At present, differential scanning calorimeter is still a standard method to test phase change latent heat, but the amount of sample required for measurement is very small....
Claims
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Login to View More IPC IPC(8): G01N25/12G01N25/20
CPCG01N25/12G01N25/20Y02E60/14
Inventor 冀志江马超王静王永超解帅
Owner CHINA BUILDING MATERIALS ACAD