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Natural cold-energy variator of heat conductivity coefficient

A technology of thermal conductivity and natural cooling energy, applied in construction, infrastructure engineering and other directions, can solve the problems of difficulty in mass use, low efficacy, and high cost, achieve low cost, prevent uneven settlement, and achieve easy results

Inactive Publication Date: 2006-03-15
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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Problems solved by technology

However, due to the limitation of the unique conditions in my country's permafrost regions, the above methods all have some deficiencies or defects.
In my country's permafrost regions, especially the Qinghai-Tibet Plateau, the annual average ground temperature of many permafrost is close to zero (called high-temperature permafrost), which makes these engineering measures either not effective, or too expensive, or only in some places. It is difficult to meet the actual requirements of the project for online and surface cooling, and it is difficult to use it in large quantities in linear engineering

Method used

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  • Natural cold-energy variator of heat conductivity coefficient
  • Natural cold-energy variator of heat conductivity coefficient
  • Natural cold-energy variator of heat conductivity coefficient

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Embodiment 2

[0026] In linear engineering, large-area line surface cooling is required to realize heat flow control in different directions between the environment and the protected object. We can continuously lay this unit device on the roadbed according to requirements (such as image 3 As shown), the shell material is generally selected from plastics with small thermal conductivity and good waterproof performance to make a sealed shell. The water-absorbing material is made of foam glass and diatomaceous earth, and 87% of the volume of the shell is added to the shell,

[0027] The present invention can be realized in the permafrost subgrade engineering by the following two approaches, one, can be as figure 2 The shown shell unit device is buried on the roadbed according to a certain density, such as image 3 In the plane layer shown, dense filling soil is laid on the layer; secondly, it can be built with concrete blocks or hollow bricks, such as Figure 4 The rhombus-shaped skeleton ...

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Abstract

A natural chilling device with vary conductivity factor. It contains closed shell and pulsating material. The shell contains 80-90% water of its whole volume and pulsating material. The device is set on the object that needs certain temperature, such as railway, highway and so on. Adjustment of environment and temperature of frost table can be realized by the change of conductivity factor with the change of temperature and characteristics of hidden heat change when phase changes.

Description

technical field [0001] The invention relates to an engineering building cooling device capable of effectively protecting the stability of the lower permafrost subgrade during engineering construction in permafrost regions, in particular to a natural cold energy type thermal conductivity variable device. Background technique [0002] With the development of national production and regional economy, as well as the implementation of the country's western development strategy and the continuous deepening of the process, my country has now continuously carried out railways, highways, oil pipelines, optical cables, and water conservancy in the permafrost areas that occupy 22% of the country's land area. Construction of other major engineering facilities. Permafrost is the biggest technical problem faced by many major construction projects in this region. Frozen soil refers to various rocks and soils with a temperature at or below 0°C and contains ice. Permafrost refers to frozen s...

Claims

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Application Information

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IPC IPC(8): E02D27/35
Inventor 牛富俊何乃武潘喜才俞祁浩
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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