Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

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
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Natural cold-energy variator of heat conductivity coefficient
  • Natural cold-energy variator of heat conductivity coefficient
  • Natural cold-energy variator of heat conductivity coefficient

Examples

Experimental program
Comparison scheme
Effect test

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products