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Environment-friendly ground source heat pump refilling material based on waste and preparation method thereof

A technology of ground source heat pump and preparation method, which is applied in the field of ground source heat pump, can solve the problems of difficult disposal of solid waste, insufficient economic and environmental protection, etc., and achieve the effects of significant social significance and environmental protection value, stable properties, and improved thermal conductivity

Active Publication Date: 2017-08-18
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an environmentally friendly ground source heat pump backfill material based on waste and its preparation method, which solves the problems of insufficient economic and environmental protection of ground source heat pump backfill materials in the prior art and difficult disposal of solid waste

Method used

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  • Environment-friendly ground source heat pump refilling material based on waste and preparation method thereof
  • Environment-friendly ground source heat pump refilling material based on waste and preparation method thereof
  • Environment-friendly ground source heat pump refilling material based on waste and preparation method thereof

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Embodiment 1

[0056] The present embodiment adopts single loess as component B, configures and obtains the backfill material of the present invention, and specific process is:

[0057] In step 1, loess materials with a particle size of less than 0.3 mm are selected, and iron tailings materials with a particle size of 0.3-2.5 mm are selected.

[0058] Step 2, taking 83g of the selected loess material and 17g of the iron tailings material, and mixing them uniformly to obtain a mixed material.

[0059] Step 3, adding water to the mixed material to prepare a mixture A with a water content of 22%.

[0060] Step 4, use the tamping method to tamp the mixture A to a dry density of 1.65g / cm 3 backfill material.

[0061] The invention prepares the backfill material with a moisture content of 22%, and adopts comparative backfill materials with a moisture content of 0%, 10% and 25%. According to GB / T 10295-2008 "Steady-state thermal resistance and related characteristics of thermal insulation materi...

Embodiment 2

[0065] The present embodiment adopts single loess as component B, configures and obtains the backfill material of the present invention, and specific process is:

[0066] In step 1, loess materials with a particle size of less than 0.3 mm are selected, and iron tailings materials with a particle size of 0.3-2.5 mm are selected.

[0067] Step 2, taking 65g of the selected loess material and 35g of the iron tailings material, and mixing them uniformly to obtain a mixed material.

[0068] Step 3, adding water to the mixed material to prepare a mixture A with a water content of 21%.

[0069] Step 4, use the tamping method to tamp the mixture A to a dry density of 1.7g / cm 3 backfill material.

[0070] The present invention prepares backfill materials with a moisture content of 21%, and uses comparative backfill materials with a moisture content of 0%, 10% and 25%. According to GB / T 10295-2008 "Steady-state thermal resistance and related characteristics of thermal insulation mate...

Embodiment 3

[0074] The present embodiment adopts single loess as component B, configures and obtains the backfill material of the present invention, and specific process is:

[0075] In step 1, loess materials with a particle size of less than 0.3 mm are selected, and iron tailings materials with a particle size of 0.3-2.5 mm are selected.

[0076] Step 2, taking 55g of the selected loess material and 45g of the iron tailings material, and mixing them uniformly to obtain a mixed material.

[0077] Step 3, adding water to the mixed material to prepare a mixture A with a water content of 19%.

[0078] Step 4, use the tamping method to tamp the mixture A to a dry density of 1.8g / cm 3 backfill material.

[0079] The present invention prepares backfill materials with a moisture content of 19%, and uses comparative backfill materials with a moisture content of 0%, 10% and 15%. According to GB / T 10295-2008 "Steady-state thermal resistance and related characteristics of thermal insulation mate...

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Abstract

The invention discloses an environment-friendly ground source heat pump refilling material based on waste and a preparation method thereof. The refilling material is a mixture A of which the water content is 18 to 22 percent; the mixture A comprises a component B and iron tailings; the component B is loess or a mixture of brick powder and the loess; the mass part ratio of the component B to the iron tailings is (39 to 83):(17 to 61); the sum of the mass parts of the component B and the iron tailings is 100 parts. When the component B is the mixture of the loess and the brick powder in the mass part ratio of (17 to 33):(67 to 83), the sum of the mass parts of the brick powder and the loess is 100 parts. By adopting the environment-friendly ground source heat pump refilling material, the defect of poor economic efficiency and environmental protection property in the ground source heat pump refilling material in the prior art is overcome, and the problem of difficulty in treating solid waste is solved. The ground source heat pump refilling material disclosed by the invention has high heat conductivity, and is environment-friendly, economical and feasible.

Description

technical field [0001] The invention belongs to the technical field of ground source heat pumps, and in particular relates to a waste-based environment-friendly ground source heat pump backfill material and a preparation method thereof. Background technique [0002] Ground source heat pump is a high-efficiency energy-saving system that uses shallow geothermal energy for both heating and cooling. The ground source heat pump realizes the transfer from low-grade heat energy to high-grade heat energy by inputting a small amount of high-grade energy, such as electric energy. This is 40% more efficient than conventional air conditioning systems. Due to the advantages of high efficiency, energy saving, cleanliness and environmental protection, the ground source heat pump system has been used more and more in recent years. [0003] The ground source heat pump backfill material is a key factor affecting the heat transfer effect of the ground source heat pump heat exchanger. The ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00
CPCC04B30/00C04B2201/20C04B2201/32C04B2111/00724
Inventor 孔德泉万蓉陈建勋尹天雨亢嘉源宁江峰王永辉马建平张立鑫黄炜明
Owner CHANGAN UNIV