Solar energy underground cross-season heat-storing method

A cross-season, solar energy technology, applied in the field of solar underground cross-season heat storage, can solve problems such as the great influence of geological conditions, and achieve the effects of simple construction, high thermal efficiency utilization rate, and good heat storage effect.

Inactive Publication Date: 2009-09-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Pacific Agricultural Research Center of Carleton University in Ottawa, Canada, the Municipal Center of Ontario, and the Sussex Hospital of N.B. have all used large-scale underground aquifer energy storage systems, but such methods are greatly affected by geological conditions and have certain limitations.

Method used

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  • Solar energy underground cross-season heat-storing method
  • Solar energy underground cross-season heat-storing method
  • Solar energy underground cross-season heat-storing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] ——In clay stratum areas with poor water permeability:

[0034] According to the design requirements, drill to the design depth, lift the drill to the surface; lower the injection pipe, and lower the injection pipe to the bottom of the hole; prepare high thermal conductivity grout, which includes 25% cement, 6% graphite, and 50% fine quartz Sand, 3% expansion agent, 2% water reducer and 14% water are uniformly mixed; pump the prepared high thermal conductivity grout into the injection pipe through the pump, and spray while spraying, rotating, swinging and lifting Pipe, according to 20MPa injection pressure, 2r / min rotation speed, 40cm / min lifting speed, jet tube swing angle 30°, swing frequency 20 times / min, inject high thermal conductivity grout into clay layer 9, when the jet tube lifts Stop sending high thermal conductivity grouting at the design height; lower the heat exchanger 7, and backfill the heat exchanger 7 to complete the underground construction of the inter...

Embodiment 2

[0038] ——In clay stratum areas with poor water permeability:

[0039] Drill to the design depth according to the design requirements, lift the drill to the surface; lower the injection pipe, and lower the injection pipe to the bottom of the hole; prepare high thermal conductivity grouting, high thermal conductivity grouting includes 30% cement, 8% graphite, 40% fine quartz Sand, 3% expansion agent, 2% water reducer and 17% water are uniformly mixed; pump the prepared high thermal conductivity grout into the injection pipe through the pump, and spray while spraying, rotating, swinging and lifting Pipe, according to the injection pressure of 40Mpa, the rotation speed of 3r / min, the lifting speed of 60cm / min, the swing angle of the injection pipe 30°, and the swing frequency of 20 times / min, inject the high thermal conductivity grout into the clay layer 9, when the injection pipe Elevate to the design height and stop sending high thermal conductivity grout; lower the heat exchang...

Embodiment 3

[0043] ——In clay stratum areas with poor water permeability:

[0044] Drill to the design depth according to the design requirements, lift the drill to the surface; lower the jet tube, and lower the jet tube to the bottom of the hole; prepare high thermal conductivity grout, which includes 27% cement, 7% graphite, and 45% fine quartz Sand, 2% expansion agent, 3% water reducing agent and 16% water are uniformly mixed; pump the prepared high thermal conductivity grout into the injection pipe through the pump, and spray while spraying, rotating, swinging and lifting Pipe, according to 30MPa injection pressure, 3r / min rotation speed, 50cm / min lifting speed, injection pipe swing angle 30°, swing frequency 20 times / min, inject high thermal conductivity grout into clay layer 9, when the injection pipe Elevate to the design height and stop sending high thermal conductivity grout; lower the heat exchanger and backfill the heat exchanger to complete the underground construction of the c...

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Abstract

The invention relates to a solar energy underground cross-season heat-storing method. In a clay stratum region, a high pressure jet grouting technique is used for injecting high-thermal conductivity mixed materials into the clay stratum around a heat exchanger with high pressure so as to form a high thermal conductivity heat-storing body and fast store the solar energy into the soil by the heat exchanger; in a stratum region with high water permeability, a jet grouting method is used for injecting water-tight heat-insulated slip casting with high pressure so as to form a loop of sealed continuous water-tight heat-insulated purdah; the earth surface is covered by the clay to form a underground heat-storing sealed storehouse; and the heat exchanger which is arranged in the storehouse is used for continuously storing the solar energy into the soil. The invention can effectively store the solar energy or industrial waste heat into the underground with an underground heat-storing device and the heat exchanger, can extract and use the energy when the heat energy is needed, can store the solar energy or the industrial waste heat into the under ground in the summer and use the energy in the winter, can store the solar energy in the day and use the energy in the night, and has simple technology, simple construction, good heat-storing effect proved by experiment and good utilization ratio of thermal efficiency.

Description

Technical field: [0001] The invention relates to a method for utilizing solar energy, in particular to a method for heating water by utilizing solar energy and storing heat underground by building an underground heat storage bin. Background technique: [0002] Solar energy is an inexhaustible and inexhaustible clean energy. Since the energy crisis in the world in the 1980s and the environmental pollution and greenhouse effect caused by a large amount of energy consumption, the use of solar energy has been favored by countries all over the world. General attention. However, solar radiation is severely unstable and intermittent due to changes in seasons, day and night, and rainy and sunny days. It is necessary to effectively regulate solar heating, so solar heat storage technology has been greatly developed. [0003] According to the energy storage time, solar heat storage can be divided into short-term heat storage and seasonal heat storage (long-term heat storage). Short-te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00F24J3/06F24J2/04F24V50/00
CPCY02E10/40Y02E10/44Y02P80/20
Inventor 赵大军赵研孙友宏王庆华李守圣
Owner JILIN UNIV
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