DE202008013502U1 - Arrangement and system for laying pipelines for a ground collector - Google Patents

Abstract

arrangement and system for laying pipelines for a ground collector, characterized in that in an earth trench 300 mm wide and 1200 mm deep, a nonwoven mat 4 is inserted so that these over the trench width reaches a height of 300 mm.

Description

The invention relates to the arrangement and installation of pipelines for an earth collector in combination with a rainwater infiltration liquid-soil non-woven mat system in connection with the use of geothermal heat by heat pumps with the aim of the heat transfer from the ground via the pipe to the medium air or brine. Substantially improve water mixture. A combination with a percolation system for increasing the heat flow of heated rainwater into the earth layers is known DE10200106 ,

Also known is a solution such. B. an earth collector for heat pumps in the form of an upright in the soil arranged elongated plate-shaped heat exchanger element to which a pipe is attached to the inlet and outlet of a heat exchanger medium, which extends substantially over the entire length of the heat exchanger element, characterized in that the heat exchanger element in its longitudinal direction down into the ground driven ( DE 29 13 333 ).

Such a trained earth collector is from the US PS 4106 555 known. The elongated plate-shaped heat exchanger element is arranged transversely in the ground, wherein the introduction into the ground by means of two spaced at the longitudinal direction of the heat exchanger mounted post with guide slots, in which the heat exchanger element can be inserted from above and this can be pushed to the bottom. This solution requires that at the point at which the heat exchanger element is to be introduced, it must first be excavated accordingly. After connecting the cables, the trench is filled again. So areas with groundwater can not be developed, at best with considerable effort. Another disadvantage is that buried solutions conduct the heat worse than the original compact soil. Thus, the desired heat extraction is lower. The digging of the heat exchanger elements is relatively time consuming and costly due to the necessary civil engineering work. In the patent DE 29 13 333 the object is achieved in that the heat exchanger element is driven in its longitudinal direction by ramming into the ground down. Damage to the property surface is thereby avoided. The disadvantage of this solution is that the required surfaces for conventional heat pump sizes also require a great deal of depth. A large depth requires stable heat exchanger components and these in turn require considerable material and cost. It is not possible to inspect any damage caused by burial through underground obstacles and thus a permanent solution can not be guaranteed. According to the prior art, these problems are better solved by deep drilling. The frost-free area to be protected from the top of the ground to -1.2 m is ignored. The Swiss PS 644682 describes an earth collector for heat pumps whose collector tubes run horizontally one above the other in the ground. At the ends vertically routed collecting pipes connect the collector pipes with each other and provide for the supply and discharge of the heating medium. For the installation of the collector considerable civil engineering work is required.

The DE-OS 30 37 755 A1 describes a manufacturing process for earth collectors in which pipes or hoses are laid horizontally, parallel next to each other in the ground.

The pipes and hoses are laid from two opposite trenches of approx. 0.8 m width with a horizontal boring machine or similar. In these trenches run the manifolds. The disadvantage is in DE 36 32 543 the cost of the drilling process and the insufficient contact due to the larger cross-section of the bore opposite the tubes and thus called lower efficiency. This is wrong. During drilling, a mixture of clay and water, which hardens, remains between the hole and the inserted pipe Betonit.

In DE 3632543 several hose bands are preferably made of plastic of the same or different length, laid with their broad side to the heat flow direction at any distance next to each other. These hose bands are laid in soil or solidifying media. This solution requires that at the point at which the heat exchanger element is to be introduced, it must first be excavated accordingly.

Another solution that requires digging in DE 3913429 A1 described.

There is a spiral absorber in a fountain-like Earth hole with a diameter of 1.5 m and a depth of 10-12 m and then filled with a cement or earth mud. adversely appears that the heat-releasing surrounding the well absorber Area is low compared to a surface absorber with pipe distances of about 0.5 m.

None However, the solutions shown combine the earth collector with a rainwater infiltration liquid soil nonwoven mat system such that the heat transfer of the earth collector and thus the heat yield and the annual efficiency sustainable so much due to the intense, longer-lasting moisture increased by about 10%.

Of the Invention is based on the object, a ground collector for the use of geothermal heat by heat pumps in Combination with a Rainwater Seepage Liquid Soil Non-Woven Mat System the goal, the effectiveness of the earth collector, increase the annual utilization rate and thus the annual electricity consumption significantly lower.

According to the invention the task by the cited in claim 1 features solved.

The advantages achieved by the invention are in particular that in a slotted pipe trench 1 corresponding 1 with a width of about 0.3 m and a depth of 1.4 m a Erdkollektorrohr 2 made of plastic at a depth of about 1.2 m, embedded in liquid soil 3 with a height of 0.3 m, surrounded and bounded by a non-woven fleece mat 4 down to the level of the liquid soil. At a depth of 0.4 m below the OK soil is above the axis of the Erdkollektorrohres 2 a rainwater infiltration pipe 5 arranged as drip or drainage pipe or other plastic pipe with openings for rainwater discharge.

From a rainwater collection system, which does not explain in more detail that it corresponds to the prior art is the rainwater infiltration tube 5 Rainwater supplied.

This rainwater 6 seeped into the area of the liquid soil 3 in its core, the Erdkollektorrohr 2 located.

This will make the liquid soil 3 , which has the good property to bind the moisture demonstrably for years, additionally moistened. Also the Quellmattenvlies 4 takes the rainwater 6 on.

This also has a very good storage effect. When water absorption, the non-woven mat 4 reach an enlargement of up to 130% of the fiber cross-section.

After laying the rainwater infiltration pipe 5 , becomes the trench with the excavated soil 7 refilled again to the height OK of the existing terrain.

By the combination in the described arrangement is achieved on the one hand, that civil engineering work (no complete excavation and re-introduction) and on the other hand, the annual efficiency of the heat pump / air preheating cooling system by the leakage of warm rainwater relative to the year by increasing and storing the moisture content of the Soil substantially increased by at least 10%.

By the infiltration system will be the wastewater costs for rainwater from the roof and sealed areas on the property considerably reduced.

A more advantageous embodiment of the invention is in the claim 2 indicated.

The earth collector 2 is constantly surrounded by water or moisture or the entire area is kept moist for a long time, which significantly improves the heat transfer.

In order to are also still unfavorable soils for Earth collectors usable.

The Ratio of heat output from dry to wet Soil is 1: 2.

it one recognizes the high importance of moisture.

1

Rohrgraben- made with a trench cutter

2

Erdkollektorrohr plastic, air heat exchanger tube made of plastic .....

3

liquid soil

4

Water-absorbent fleece mat

5

Stormwater pipe made of plastic, drainage pipe, drip ...

6

rainwater

7

Excavation Recovery Built Attached soil

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 10200106 [0001]
• - DE 2913333 [0002, 0003]
• US 4106555 [0003]
• - DE 3037755 A1 [0004]
• - DE 3632543 [0005, 0006]
• - DE 3913429 A1 [0007]

Claims (8)

Arrangement and system for laying pipelines for a ground collector, characterized in that in a Erdgraben 300 mm wide and 1200 mm deep, a non-woven mat 4 is inserted so that it reaches a height of 300 mm over the trench width. Arrangement and system for laying pipelines for a ground collector, characterized in that in the trough with the swelling fleece 4 a ground collector tube made of PE plastic 2 is arranged centrally. Arrangement and system for laying pipes for a ground collector, characterized in that in the trench with the swellable nonwoven 4 is lined and in which a plastic Erdkollektorrohr 2 centered is a patented liquid earth (liquid arc) 3 it is poured until it reaches the height of the non-woven mat 4 reached. Arrangement and system for laying pipelines for a ground collector, characterized in that the Dig up to a height of -400 mm below OKG is filled back with the excavation. Arrangement and system for laying piping for a ground collector, characterized in that on the filled soil in the middle of a rainwater infiltration tube 5 is designed as a drip or run as a drainage pipe. Arrangement and system for laying pipelines for a ground collector, characterized in that the now the ditch up to OK terrain filled with the excavation becomes. Arrangement and system for laying pipelines for a ground collector, characterized in that a swellable nonwoven 4 it is used that with absorption of water an enlargement of up to 130% of the fiber cross-section is achieved. Arrangement and system for laying pipelines for a ground collector, characterized in that a swellable nonwoven 4 it is used that with absorption of water an enlargement of up to 130% of the fiber cross-section is achieved.