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System for testing stability of solid-liquid phase change materials

A material stability, solid-liquid phase transition technology, applied in the investigation phase/state change, valve details, engine components, etc., to achieve a high degree of automation

Inactive Publication Date: 2011-02-16
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the problem of long-term use stability testing of phase change materials, the present invention proposes a stability testing system for solid-liquid phase change materials

Method used

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  • System for testing stability of solid-liquid phase change materials

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Embodiment Construction

[0020] figure 1 It is a schematic diagram of Embodiment 1 of the solid-liquid phase change material stability test system of the present invention, mainly including a high-temperature heat source constant temperature tank 1, a low-temperature heat source constant temperature tank 2, a timing controller 3, a data acquisition instrument 4, a computer 5, and a two-way solenoid valve 6 , Three-way solenoid valve 7, three-way solenoid valve 8, two-way solenoid valve 9, heat preservation container 10, sample container 11, temperature sensor 12, and there is a pipeline connection therebetween. The working temperature of the high-temperature heat source constant temperature tank 1 and the low-temperature heat source constant temperature tank 2 is -40°C to 350°C.

[0021] Timing controller 3 can set arbitrary melting time intervals and solidification time intervals respectively. When the system is in use, the sample is first filled, and the temperature of the high-temperature heat sour...

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Abstract

The invention relates to a system for testing the stability of solid-liquid phase change materials, which comprises a high-temperature heat source thermostatic bath 1, a low-temperature heat source thermostatic bath 2, a timing controller 3, a data acquisition instrument 4, a computer 5, a two-way electromagnetic valve 6, a three-way electromagnetic valve 7, a three-way electromagnetic valve 8, a two-way electromagnetic valve 9, an insulated container 10, a sample container 11 and a thermocouple 12. Cold and hot thermostatic media in the high-temperature heat source thermostatic bath 1 and the low-temperature heat source thermostatic bath 2 can be automatically switched through the timing controller 3 to alternately pass through the insulated container 10, thereby repeatedly melting by heating and solidifying by cooling a phase change material sample in the sample container 11. The invention does not need manual operation and has high degree of automation. The invention can be used for scientific research units and related manufacturers to research and develop phase change materials as well as detect the long-time using stability of products.

Description

technical field [0001] The invention relates to a phase change material stability test technology, in particular to a phase change material stability test system capable of automatically melting and solidifying a solid-liquid phase change material repeatedly. Background technique [0002] Solid-liquid phase change materials can absorb or release a large amount of heat energy while maintaining a constant temperature during solid-liquid phase change, and have a higher energy storage density than sensible heat storage materials, so they can be used for energy storage in various energy systems In the device, such as heat storage system for solar heat utilization, cold storage system for air conditioning, heat recovery system for industrial waste heat, etc. [0003] Solid-liquid phase change materials can be divided into organic phase change materials and inorganic phase change materials. Organic phase change materials (such as paraffins, fatty acids) are non-corrosive, stable in...

Claims

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Application Information

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IPC IPC(8): G01N25/02F16K31/06
Inventor 胡芃卢大杰张谦
Owner UNIV OF SCI & TECH OF CHINA
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