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Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device

A technology for solar refrigeration and permafrost foundations, which is applied to refrigerators, refrigeration and liquefaction, roads, etc., can solve the problems of thermal rods losing their function, and achieve the effects of simple structure, prevention of heat sinking, and strong practicability

Active Publication Date: 2014-02-19
NORTHWEST RES INST CO LTD OF C R E C +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of hot rod device for maintaining the thermal stability of the permafrost foundation subgrade, when the temperature of the evaporation section is higher than that of the heat dissipation section in cold seasons and there is a negative temperature difference, the heat in the subgrade and subgrade will be lost to the atmosphere from bottom to top, and it will be frozen for many years The permafrost thawing season is the warm season. At this time, the temperature of the evaporation section of the hot rod is lower than the temperature of the heat dissipation section, and there is a positive temperature difference. The refrigerant stops circulating, causing the hot rod to lose effect

Method used

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  • Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device
  • Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device
  • Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device

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Embodiment 1

[0025] The structure of the solar refrigeration device: it includes a condenser pipe 3, and heat dissipation fins 5 are installed on the outer periphery of the condenser 3. One end of the condenser pipe 3 is provided with an evaporator 4, and the other end is provided with a solar refrigeration driver 1 (see figure 1 ). The solar refrigeration driver is provided with a light-transmitting tube 1-6 outside the metal-coated tube 1-1, and the metal-coated tube and the light-transmitting tube are closed and vacuumized; the metal-coated tube 1-1 is provided with radial grids at intervals 1-9, and fill the radial grid 1-9 with refrigerant 1-10; one end of the metal coating tube 1-1 is connected to the condenser tube 3 through the straight flange 2, and the other end is connected by the closed flange 1-4 seal. The inner core of the metal-coated tube 1-1 is provided with an air guide tube 1-8, and one end of the air guide tube corresponding to the closed flange 1-4 is provided with a ...

Embodiment 2

[0028] The structure of the solar refrigeration device: it includes a condenser pipe 3, and heat dissipation fins 5 are installed on the outer periphery of the condenser 3. One end of the condenser pipe 3 is provided with an evaporator 4, and the other end is provided with a solar refrigeration driver 1 (see Figure 4 ). Wherein, the solar refrigeration driver includes a metal coating tube 1-1, and a light transmission tube 1-6 is arranged outside the metal coating tube 1-1, and the metal coating tube and the light transmission tube 6 are closed and vacuumized; the metal coating tube 1-1 Axial grids 1-9 are arranged at intervals, and refrigerants 1-10 are filled in the axial grids 1-9; one end of the metal coating tube 1-1 passes through the straight-through flange 2 and the condenser tube 3 Docking, the other end is docked with the condensation pipe 3 of another solar refrigeration device through a straight-through flange 2 . A vacuum extraction port 1-6 is provided on the s...

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Abstract

The invention provides a method for maintaining thermal stability of a permafrost foundation subgrade by using a solar refrigeration device. The method relates to the solar refrigeration device and an arrangement method of the solar refrigeration device, wherein the solar refrigeration device comprises condenser pipes; cooling fins are mounted on the peripheries of the condenser pipes; an evaporator is arranged at one end of each condenser pipe, and a solar refrigeration driver is arranged at the other ends of the condenser pipes; and the evaporators are metal single pipes coated with heat-absorbing materials on the outer surfaces. During an application of the solar refrigeration device, the evaporators are partially buried under the permafrost foundation subgrade in an independent vertical arrangement manner or mutual communication manner, and the condenser pipes and the refrigeration driver extend out of the permafrost foundation subgrade. According to the method, whole year operation and cycle operation of the solar refrigeration device are realized by means of climatic features of a plateau permafrost region, initiative refrigeration can be realized particularly in a warm season when the permafrost is melted, and the method is used for maintaining the thermal stability of the permafrost foundation subgrade, and phenomena of hot melt sinking, inclining, cracking and the like of the permafrost foundation subgrade can be effectively prevented.

Description

technical field [0001] The invention relates to a method for thermally stabilizing permafrost foundations, in particular to a method for maintaining thermal stability of permafrost foundation subgrades by using a solar refrigeration device. The method can also be used for active refrigeration in technical fields such as solar air conditioners and solar cold storage. Background technique [0002] In the thermal stability operation and maintenance of permafrost subgrades, most of the domestic and foreign materials such as crushed stones and flakes are laid on the slope protection, road berms, subgrade bottom and other parts of the subgrade to form a thermal barrier to prevent the heat from being transferred downward in the warm season. To prevent the melting of permafrost. The use of these materials has played a certain role in the maintenance of thermal stability of permafrost subgrades. However, the gaps between crushed stones and flakes are easily covered by wind, sand or...

Claims

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Application Information

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IPC IPC(8): E01C3/06E02D3/115F25B27/00
Inventor 米维军贾鋆李勇熊治文郑静韩龙武武小鹏屈耀辉魏永梁赵相卿
Owner NORTHWEST RES INST CO LTD OF C R E C
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