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System and method for measuring composite thermal parameters of phase change concrete member

A composite thermal and concrete technology, applied in the direction of material thermal development, can solve the problems of large error in measurement results and the limitations of thermal parameters that cannot be well characterized, and achieve the effect of avoiding errors, reducing experimental measurement errors, and ensuring accuracy.

Active Publication Date: 2022-05-13
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a system and method for measuring the composite thermal parameters of phase change concrete components, aiming to solve the problem that the existing testing methods can only test samples with fixed requirements, and the measurement results have large errors due to the influence of sample size, and cannot be better Limitations of Characterizing Thermal Parameters of Whole Model Component Composite Materials

Method used

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  • System and method for measuring composite thermal parameters of phase change concrete member
  • System and method for measuring composite thermal parameters of phase change concrete member
  • System and method for measuring composite thermal parameters of phase change concrete member

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Embodiment 1

[0071] The embodiment of the present invention discloses a system for measuring composite thermal parameters of phase change concrete components, including: a model unit, a loading unit, an air handling unit, and a monitoring unit, such as figure 1 As shown, the model unit includes a metal container 13. The metal container 13 is a container matching any common size and shape of the component to be tested, and is used to hold the component to be tested 5, and to measure the composite thermal parameters of the component to be tested 5 with different sizes and shapes. The model units are respectively It is connected with the loading unit and the air handling unit, and the component 5 to be tested is a phase change concrete material;

[0072] The air processing unit includes: an air outlet 9 and a vacuum pump 19; the air outlet 9 is arranged on the metal container and connected to the vacuum pump 19 through a pipeline;

[0073] The loading unit provides different constant temperat...

Embodiment 2

[0076] The embodiment of the invention discloses a system for measuring the composite thermal parameters of phase change concrete components, using the transient method to measure the thermal conductivity, such as figure 2 As shown, the model unit includes: barrel outer insulation material 3, barrel inner insulation material 4, component to be tested 5, barrel bottom insulation material 8, barrel top insulation material 11, metal container 13, and the loading unit includes: constant temperature heating The device 16, the line heat source 15, and the monitoring unit include: a temperature sensor 22, a heat flux sensor 21, and the sensor is connected to a computer through a collector.

[0077] In this embodiment, first place the component to be tested 5 and the insulating and heat insulating material in a metal container 13, insert the line heat source 15 into the reserved hole of the component to be tested 5, fill the gaps with high thermal conductivity silica gel, and then pas...

Embodiment 3

[0101] The embodiment of the present invention discloses a system for measuring the composite thermal parameters of phase change concrete components, using the steady-state method to measure the thermal conductivity and thermal expansion coefficient, such as image 3 As shown, the model unit includes: barrel outer insulation material 3, barrel inner insulation material 4, component to be tested 5, barrel bottom insulation material 8, barrel top insulation material 11, metal container 13, and the loading unit includes: constant temperature heating Device 16, constant temperature cold plate 7, constant temperature heating plate 10, water circulation temperature control device 17, the monitoring unit includes: temperature sensor 22, heat flux sensor 21, strain gauge 23, the sensor is connected to the computer through the acquisition instrument.

[0102] In this embodiment, the heat flux sensors 21 are first attached to the upper and lower surfaces of the component to be measured 5...

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Abstract

The invention discloses a system and a method for measuring composite thermal parameters of a phase change concrete member, which are applied to the technical field of structural model test, and the measuring system comprises a model unit, an air treatment unit, a monitoring unit and a loading unit, the model unit comprises a metal container, a metal sheet, a to-be-tested phase-change concrete member placed in the container, and insulating and heat-insulating materials inside and outside the metal container; the loading unit comprises a constant-temperature line heat source heater, a constant-temperature cold plate, an electric control multi-gradient constant-temperature heating plate, a constant-temperature heating device, a constant-temperature water inlet, a water outlet, a water circulation temperature control device and a water tank; the air treatment unit comprises an air outlet and a vacuum pump; the monitoring unit comprises a temperature sensor, a heat flux sensor and a strain gauge, and the system can measure thermal parameters of a non-standard component, specifically a composite heat conductivity coefficient, a specific heat capacity and a thermal expansion coefficient.

Description

technical field [0001] The invention relates to the technical field of structural model tests, and more specifically relates to a system and method for measuring composite thermal parameters of phase-change concrete components. Background technique [0002] The energy underground structure can effectively utilize shallow geothermal energy. Compared with the ground source heat pump system, combining the heat exchange system with the underground structure can effectively save underground space. The energy underground structure has a similar working principle to the ground source heat pump system, but the economy and construction convenience of the energy underground structure are obviously better. In the working engineering of energy underground structures, the mechanical components and thermal components in the structure work together to produce different performances from traditional structures. Therefore, research on the thermal-mechanical coupling performance of structures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 包小华史嘉鑫崔宏志亓学栋陈湘生
Owner SHENZHEN UNIV
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