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An ultra-long flexible heat pipe and its geothermal snow melting and deicing method

A flexible pipe, ultra-long technology, applied in indirect heat exchangers, lighting and heating equipment, roads, etc., can solve the problems of cost, efficiency, pollution, installation, transportation, etc., to avoid adverse effects, enhance start-up performance, and high reliability Effect

Active Publication Date: 2018-02-23
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to propose an ultra-long flexible heat pipe to solve the problems of cost, efficiency, pollution, installation, transportation, etc. existing in the existing snow melting and deicing technology. The geothermal snow melting and deicing method of flexible heat pipes uses ultra-long flexible heat pipes to absorb geothermal heat, and spontaneously and actively melts snow and ice in areas such as roads, bridges, and airstrips around the clock

Method used

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  • An ultra-long flexible heat pipe and its geothermal snow melting and deicing method
  • An ultra-long flexible heat pipe and its geothermal snow melting and deicing method
  • An ultra-long flexible heat pipe and its geothermal snow melting and deicing method

Examples

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Effect test

Embodiment 1

[0049] A kind of ultra-long flexible heat pipe structure according to the present invention is as follows: figure 1 As shown, it is applied to the airport runway for snow melting and deicing in winter. The overall shell of the ultra-long flexible heat pipe 1 is made of ultra-long flexible pipe material 2, and the structure is divided into three parts: the condensation section (heat release end) 6, the heat insulation section 7 and the evaporation section (heat extraction end) 8 from top to bottom; the evaporation section 8 is lined with a liquid-absorbing core 3, and at the same time, a liquid reservoir 4 is welded at intervals in the evaporating section, while the condensing section 6 and the adiabatic section 7 are not equipped with a liquid-absorbing core 3 and a liquid reservoir 4; Thermal medium 5. The evaporation section 8 and the heat insulation section 7 of the ultra-long flexible heat pipe 1 are buried vertically in the borehole 13 below the roadbed 12, the borehole...

Embodiment 2

[0052] A kind of ultra-long flexible heat pipe and geothermal snow-melting and deicing method thereof as described in Example 1, adopt Figure 4 ~ Figure 5 The condensing section 6 shown is arranged radially, the total length of the ultra-long flexible heat pipe 1 is 55m, the evaporating section 8 is 40m long, the adiabatic section 7 is 10m, the condensing section 6 is 5m, the outer diameter is 25mm, and the inner diameter is 21mm. The ultra-long flexible pipe 2 is made of PPR as the matrix and graphene as the thermally conductive filler, with a thermal conductivity of 1.5W / (m K), a thickness of 2mm, and a lining of 0.1mm aluminum film; the evaporation section 8 is lined with a carbon fiber liquid-absorbing core , thickness 1mm; liquid reservoir 4 is installed every 2m, the material is the same as the super-long flexible pipe 2, the upper part is a tapered reducing joint, 20mm long, the lower part is a Φ40×2mm tube shell, 60mm long, and the inner suit is super long The equal-d...

Embodiment 3

[0055] A kind of ultra-long flexible heat pipe and geothermal snow-melting and deicing method thereof as described in Example 1, adopt Figure 8 ~ Figure 9 In the parallel arrangement shown, the total length of the ultra-long flexible heat pipe 1 is 70m, the length of the evaporation section 8 is 40m, the length of the adiabatic section 7 is 10m, the length of the condensation section 6 is 20m, the outer diameter is 32mm, and the inner diameter is 28mm. The ultra-long flexible pipe 2 is made of ABS as the matrix and alumina as the thermal conductive filler, with a thermal conductivity of 1.0W / (m K), a thickness of 2mm, and a lining of 0.2mm aluminum film; the evaporation section 8 is lined with stainless steel wire mesh Liquid-absorbing core, thickness 2mm; liquid reservoir 4 is installed every 1m, the material is the same as the super-long flexible pipe 2, the upper part is a tapered reducing joint, 40mm long, the lower part is a Φ50×2mm tube shell, 60mm long, and the inside ...

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Abstract

The invention relates to an overlong flexible heat pipe and a geothermal snow melting and deicing method thereof. The overlong flexible heat pipe is manufactured from an overlong flexible pipe material (2) and comprises three parts from top to bottom, namely, a condensing section (6), a heat insulating section (7) and an evaporating section (heat collecting end) (8), wherein a liquid absorbing core (3) is lined in the evaporating section (8), and liquid storing devices (4) are welded at regular distances in the evaporating section (8); the heat pipe is filled with a heat transferring media (5). The geothermal snow melting and deicing method is characterized in that the evaporating section (8) and the heat insulating section (7) of the overlong flexible heat pipe are vertically embedded into drilling holes (13) below a road foundation (12), and the drilling holes (13) are fully filled with backfilling materials (14); after being bent, the condensing section (6) is arranged in the road foundation (12); the heat transferring media (5) in the heat pipe can be automatically circulated to be evaporated, raised, condensed and reflowed under the temperature difference effect, thus the geotherm can be gained to heat the road foundation, and the surface temperature of the road is kept to be more than zero DEG C, and as a result, the snow melting and deicing can be achieved. A geothermal snow melting and deicing system constructed based on the overlong flexible heat pipe and the method can run without consuming energy power within the running cycle; and the system is free of maintenance, and can automatically run around the clock.

Description

technical field [0001] The invention relates to an ultra-long flexible heat pipe and a geothermal snow-melting and deicing method thereof, belonging to the technical field of geothermal utilization and low-temperature heat pipe application. technical background [0002] In winter, especially in cold regions, the temperature stays below zero for a long time. After snowfall, the road is easy to form snow or freeze, and the road surface is wet and slippery, which seriously hinders normal traffic operation, especially on ramps, intersections, airports, bridges and other roads. Snow and ice have brought great safety hazards to people's travel. [0003] There are two traditional snow melting and deicing methods: clearing method and melting method. The removal method is to use manual or mechanical equipment to remove snow and ice. The efficiency of manual snow removal is extremely low, and the operation cost of large-scale snow removal equipment is high. The operation will inevita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/02E01C11/26
CPCE01C11/26F28D15/0241
Inventor 朱跃钊王啸远范红途朱韵卉陈海军
Owner NANJING TECH UNIV
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