WO2009007606A2

WO2009007606A2 - Buried vertical threaded exchanger for heating or cooling apparatus

Info

Publication number: WO2009007606A2
Application number: PCT/FR2008/051168
Authority: WO
Inventors: Denis Consigny
Original assignee: Climatisation Par Puits Canadiens
Priority date: 2007-06-26
Filing date: 2008-06-26
Publication date: 2009-01-15
Also published as: FR2918086B1; WO2009007606A3; US20100200192A1; CA2691363A1; FR2918086A1

Abstract

The invention relates to a hollow pole buried substantially vertically into the ground by threading, characterised in that it comprises: at least one helical wing (2) with a flat shape and having a reduced pitch capable of inducing a sinking of a few centimetres per rotation when the pole is rotated, the helical wing (2) being mechanically connected and in thermal contact with the outer wall (1) of the pole; an inner partition (3) defining an axial compartment (11) and a side compartment (12) communicating together at the lower portion (13) of the pole; characterised in that the helical wing (2) is in direct thermal contact with the side compartment (12) through the wall thickness of the pole (1) and in that the side compartment (12) has a passage section (S2) substantially smaller than the passage section (S1) of the axial compartment (11).

Description

Buried vertical screw heat exchanger for heating or cooling system

The field of the invention is low and medium depth geothermal energy. Incidentally, the invention can also be applied to the realization of foundations for buildings.

In the field of geothermal energy at low and medium depths, air / soil or liquid / soil heat exchangers are known that are used in heating or air-conditioning installations and that currently consist either of plies of tubes made of plastic or metal materials. buried at a depth of a few tens of centimeters either by vertical tubes or in some cases by vertical pins.

These exchangers are traversed by a heat transfer fluid. This heat transfer fluid can be either water or water with antifreeze and / or corrosion inhibitors or is a refrigerant of the category of ammonia, carbon dioxide or fluorinated compounds.

Also known devices known as "Canadian wells" or "wells" Provençal "in which air is passed through underground pipes placed at a depth generally between 1 and 3 meters before introducing this temperate air by its passage in the ground in a building.

The production of heat exchangers contained in the prior art requires extensive earthmoving means and is therefore particularly expensive. In addition, the performance of the exchangers depends directly on the surfaces of tubes in contact with the ground, this surface being limited by construction to that of the outer wall of the tubes, which wall is strictly cylindrical. In all cases, these exchangers represent an additional overhead, insofar as their only function is to contribute to the sole operation of the heating and / or air treatment systems fitted to a given building.

The main objective of the invention is to improve the performance of fluid / soil exchangers used in the production of heating or air conditioning systems for buildings, whether they are individual or collective residential buildings, tertiary buildings, buildings industrial buildings or farm buildings, or even light buildings for residential use.

An ancillary objective of the invention is to reduce the cost of fluid / soil heat exchangers while increasing the life of such exchangers.

A complementary objective is to allow the rapid realization of fluid exchangers / soil, without requiring the use of excessive earthmoving means, and in particular to allow the implantation of such exchangers in low surface areas or even directly in the sub floors of buildings already built or in the case of buildings whose ground surface occupies the entirety of the private land in which they are located.

A complementary objective consists in facilitating the construction of light constructions while improving the thermal performance of such constructions.

To achieve these objectives as well as others that will appear on reading the description of its embodiments and its applications, the invention proposes to make exchangers using screwed metal piles, close to those used for the realization of the foundations of light constructions. This embodiment, which is particularly economical, makes it possible to increase the useful exchange surface and therefore the efficiency of the exchangers. In a preferred embodiment, the screwed metal piles will have the dual function of building supports and heat exchangers for supplying the heating / cooling systems of the buildings concerned.

The invention is based on the use of hollow metal piles having a conical bottom end and provided with mainly horizontal helical fins, said fins having a large surface area and a relatively small pitch (typically and state of the prior art for the realization of foundations of light constructions, a few centimeters per turn, so as to allow the operations of establishment of the piles by screwing). The following description will show that the cost reduction objectives are achieved by using proven implementation and implementation methods, designed for the realization of foundations and / or by combining the functions of foundations and exchanger. thermal. It will be noted that the objectives of improving the efficiency are obtained thanks to the action of helical fins which contribute to increase the contact surface tubes / soil and consequently the quality and the efficiency of the heat exchanges, while procuring, in the case of use of the piles according to the invention both as heat exchangers and as foundation elements, a seat particularly resistant to driving forces as tearing. It will also be noted that these helical fins have the dual advantage of enabling a quick and inexpensive installation, since carried out by means of a simple screw machine, of the piles according to the invention and of substantially increasing the contact surface of the tube. /ground. In addition, it will be seen that the specific provisions recommended by the invention make it possible to increase the mass of materials involved in fluid / soil heat exchange, to set up peripheries for the piles of materials adapted to promote these exchanges while at the same time making it possible to reinforce anchoring in the ground of vertical piles.

According to the invention, the mainly horizontal helical fins have a triple function:

1) They allow driving by screwing the piles as soon as they are subjected to a high torque with the help of appropriate machines or tools.

2) They constitute a bearing surface capable of improving the resistance to driving and / or tearing of the piles once said piles driven into the ground.

3) They improve the exchange surface between the outer wall of the pile with which they are in thermal contact and the ground in which said pile is found to be depressed following the screwing operations permitted by the presence of said fins. Complementarily, the piles according to the invention will be provided with mainly vertical fins whose role will be to repel the earth or mineral materials composing the soil at a distance corresponding to the width of said fins mainly vertical relative to the outer wall of the piles. . The space thus created as and when driving piles into the ground can be filled, after installation of the pile by screwing, with a suitable material, for example a lean cement, bentonite or a substance with state change. This adapted material will have the advantage of having a conductivity greater than that of the earth. It may also and advantageously have a high specific heat. In a particularly powerful variant, this material will consist of a material chosen from paraffins, or from substances having the property of storing and returning a large quantity of calories or frigories during their passage from the solid state to the liquid state or liquid state in the solid state.

The establishment by screwing, using a suitable machine for simultaneously subject to pressure and rotation forces a first tube section with a lower end tapered pointed or conical shape will have the effect of one part to penetrate this section into the ground, under the effect of the main horizontal blade which is provided with said section and secondly to push the earth periphery of said tube, under the effect of the mainly vertical fins which will compact the ground previously fragmented by the mainly horizontal fin and form an empty cylindrical sheath between the outer wall of the pile and the compacted earth cylinder. Once this first section, preferably of a length of about 3 meters, embedded in the ground can either be used as is by equipping it with internal partitions and a flange at the top, or extend it by a or several complementary sections, which may also have one or more fins mainly horizontal facilitating their penetration into the ground and one or more mainly vertical fins pushing and compacting the earth periphery of the tube. These additional sections will be assembled the lower section by crimping, interlocking, welding or screwing. In any case, these sections will be assembled in such a way that the resulting pile has the shape of a single tube provided with a pointed end and one or more fins that are mainly horizontal and, optionally, but particularly advantageous for the performance of the installation, one or more fins mainly vertical. The pile thus obtained will be driven until its upper end is flush with the ground, or even a little deeper in which case a disbursement will be practiced in the ground to a depth of about 50 cm. The pile will then be equipped with internal partitions, delimiting an axial compartment and a lateral compartment and a flange at the top, flange through which will pass the pipes for supplying fluid to said inner and outer compartments. In the particularly advantageous case where the tubes forming the piles have been equipped with mainly vertical fins, there will be a space of the form of a hollow cylinder between the outer wall of the tube and the compacted earth which will be pushed back to the periphery of the tube by the action of said fins mainly vertical. This space will be mainly occupied by the fins or mainly vertical, which we understand that in the state they can play an effective role allowing the transmission of calories or frigories between the fluid passing through the inner compartments of the piles and the ground. It is for this reason that the invention recommends to proceed to the complete filling of the empty space created by the rotation of the or mainly vertical fins. This filling will be done using a material having at the time of its implementation by casting a sufficient viscosity to fill the entire vacuum between the outer wall of the tube and the surface of the compacted earth. It can for example be realized:

- Either using a cement or lean mortar.

- Or with a resin preferentially charged with conductive particles (for example iron filings or carbon fibers).

- Either using a bentonite type material or equivalent. - Or again using a material having the property of changing state at positive temperatures, preferably close to 20 ° C, so that the amounts of calories and / or frigories stored and returned are the most important possible. To avoid any risk of flow of this material into the earth, it will advantageously be contained in tanks of cylindrical shape elongated or shaped to fill the empty space created by the rotation of mainly vertical fins.

The invention will be better understood if one refers to the attached figures in which:

FIG. 1 represents a dwelling resting on four piles according to the invention, these piles having the dual function of supporting the house and exchanger for the primary circuit of a reversible heat pump used for heating and cooling. of this dwelling

FIG. 2 is an enlarged view of an element of FIG.

FIG. 3 represents a dwelling resting on three piles according to the invention, said piles supplying a liquid / air exchanger intended to temper the renewal air of the dwelling,

FIG. 4 represents a sectional view and details of embodiment of a pile according to the invention,

FIGS. 5A and 5B are sectional views along the section lines AA and BB of FIG. 4, and

- Figure 6 is an enlarged sectional view of a pile of the invention according to a preferred embodiment.

These figures show that the invention recommends the use, as exchanger of calories or frigories between the ground and a fluid, of at least one hollow pile 1, preferably metal, pressed substantially vertically into the ground by screwing. The pile comprises an inner wall (1i), an outer wall (1e) and a substantially constant wall thickness. The pile 1 may consist of several sections connected to each other in a sealed manner.

This pile 1 comprises: - At least one substantially horizontal helical fin 2 of flattened shape and having a reduced pitch capable of causing a depression of a few centimeters per turn, when the pile is subjected to rotation, said helical fin 2 being mechanically bonded and in contact thermal with the outer wall 1e of the pile;

an internal partition 3 delimiting two distinct compartments 11, 12 communicating with one another at the bottom 13 of the pile 1, namely an axial compartment 11 and a lateral compartment 12, the lateral compartment 12 advantageously having a passage section S2 substantially smaller than the passage section S1 of the axial compartment 11;

a lower portion 9 of conical shape;

an upper flange 8 having passage openings for ducts 4 communicating in sealed manner with each of the two compartments delimited by the internal partitioning 3.

In a preferred embodiment and particularly efficient, the pile 1 is provided, in addition to the or fins 2, at least one mainly vertical fin 22. This mainly vertical fin 22 will have a length such that it will not exceed the lateral end of the finely horizontal fin 2 above which it will be placed. It will be connected to the outer wall of the pile 1, preferably by welding. The fin 22 will have a rounded or beveled end so that its rotation has the effect of repelling the previously broken ground by the action of the mainly horizontal fin 2. The vacuum created following the rotation of this mainly vertical fin 22 , will be advantageously filled, after setting up by face of all the sections forming the fluid / soil heat exchanger, with a material having good conduction performance, thermal storage, or, for some applications, mechanical strength. This material will be either cement or lean mortar, or bentonite, or a substance with the property of changing state at a temperature close to 20 ° C, and in any case greater than 10 ⁰ C. The fact that the piles according to the invention comprise at least one vertical fin 22 of a width smaller than the diameter of the essentially horizontal fin 2 will thus make it possible to provide a void space coaxial with said piles, these spaces created by the rotation of the vertical fin 22 being filled with a material 25 having a conductivity and thermal inertia greater than that of the earth in which said pile is depressed. And this material 25 may be chosen from substances having the particularity of passing from the solid state to the liquid state at a temperature above 10 ° C, for example in the family of normal paraffins or iso paraffins.

It is understood in these conditions that the relatively colder fluid in winter or relatively hotter in summer relative to the ground will exchange calories or frigories first with the outer wall of the pile 1 and then with the horizontal fins or fins 2 and with the vertical fin (s) 22 and, simultaneously, with the mass of filling material 25 which is in thermal contact with the vertical fin (s) 22. Finally, this filling material 25 will exchange calories or frigories with the compacted earth T which is at its periphery, shown in Figure 6, the calories and frigories finally spreading to the rest of the ground that was not affected by the operations of establishment of piles by screwing.

The establishment of the piles according to the invention will be in successive sections. The lower section will have an end 9 of conical shape, able to facilitate penetration into the ground and to obstruct the compartments in which the fluid flows. The sections will be assembled together sealingly by welding by embedding or by screwing and each section will comprise one or more helical fins 2 in thermal contact with the outer wall 1 of said pile.

In the case where the piles according to the invention are used as foundation of a building, and more particularly of a greenhouse or a light house, they will comprise in the upper part a connecting piece 10 comprising fastening means suitable for be made integral with the floor 17 or the lower structure of a building 7, as well as lateral or upper opening allowing the passage of the supply and outlet lines of the fluid. Thus, the vertical piles according to the invention comprises an upper flange 8 which will be secured to the floor 17 or the lower structure of a building 7 by a connecting piece having through holes for the pipes 4.

The fluid that will exchange calories or frigories with the soil during its passage in the compartments of the exchanger consisting of one or more piles as described, connected together in series or in parallel by lines 4 may be used to feed the circuit primary of a thermodynamic machine 5 type heat pump.

To allow the thermal exchange between the fluid and the ground in which the piles according to the invention are implanted, the lateral compartment 12 will be connected by lines 4 to a liquid / air exchange battery 15, said liquid exchange battery the air being itself connected by pipes 4 to the axial compartment 11, said axial compartment 11 forming with the lateral compartment 12, the pipes 4 and the liquid / air exchange battery 15 a sealed and sealed circuit, which circuit will also comprise at least one circulator 16.

To allow to preheat or refresh the renewal air of a building, the battery 15 will be crossed by the renewal air supplying the building of which said pile forms part of the foundations.

According to these provisions, the use of at least one pile according to the invention will make it possible to provide heating or air conditioning, treatment or pretreatment of air.

It will also be possible to achieve using at least one pile according to the invention foundations for industrial, agricultural, residential individual or collective or leisure, knowing that these buildings will benefit on the one hand from economic foundations and particularly powerful and on the other hand heating and / or cooling systems with very low energy consumption.

In a simplified embodiment, the piles 1 will be provided with a single fin 2 in the lower part, which will make them into one section. In a preferred embodiment, the piles 1 will comprise a plurality of fins 2, each fin being located at one end of a section; the sections being assembled together by welding, crimping interlocking, forcing or screwing. Thus, the machine exerting a tightening torque and a vertical pressure on successive sections of piles can implement successively each section, a sealed mechanical connection being made for example by welding at the outer wall of the piles. The operations of driving the pile into the ground will be facilitated by the presence of a conical part 9 in the lower part of said pile. Advantageously, this conical part 9 will be attached to the lower end of a section in the same manner for example by screwing, crimping or welding that will be made the fasteners of a section on the lower section, so that the sections They will be identical to each other and may be connected indifferently in the lower part to a conical end or another section and in the upper part either to a terminal plate or flange or to another section.

In all cases, the piles 1 will be equipped with means for circulating a fluid over all or almost all of their length. These means may be for example an internal partition 3 opening in the lower part 13, so that the fluid travels vertically along the length of the tube from bottom to top inside said interior partition 3, in the lower part of which it will emerge to go up the along the inner wall of a toric section between the outer wall of the axial tube and the inner wall of the pile 1. Advantageously, the outer diameter of the inner partition 3 will be close to the inner diameter of the tube constituting the pile 1, such so that the residual toric section S2 between the two cylindrical surfaces defined by said walls is sufficiently small so that the fluid is subjected to a turbulent flow, including for relatively low flow rates. Also advantageously and according to an important feature of the invention, the internal partitioning 3 comprises a section reducer which may be in the form of a boss or an excrescence 31 which will be placed at an altitude corresponding to the presence of a helical fin in thermal contact with the outer wall of the pile. This arrangement will accelerate the passage of the fluid between the boss 31 and the outer wall of the tube forming the pile, so that the zone equipped with a helical fin will constitute a particularly effective heat exchange zone between the earth in which the The pile will be immersed and the fluid circulating in the pile. This original arrangement will significantly reduce, compared to known geothermal probes, equal efficiency, the implantation length and therefore the cost price of fluid exchangers / soil. The combination of the action of a metal fin having a large surface in contact with the ground including at distances distant from the axis of the pile and the turbulent flow of the fluid on either side of a wall metal makes it possible to obtain very high performances in terms of heat exchange.

In FIG. 4, the passage section or boss reducer 31 is in the form of a sleeve engaged around the internal partition 3 at the level of the fin 2.

FIG. 6 represents a preferred embodiment of the invention, particularly with regard to internal partitioning 3. This partitioning forms, just as in the embodiment of FIG. 4, an axial central compartment or passage 11 having a section transverse S1. As for the lateral compartment, it is divided by the partition 3 in several passages or cells 12a which follow the inner wall 1 i of the pile 1. These passages 12a are 7 in the embodiment of Figure 6. They are arranged distributed around the central axial compartment 11. Each passage 12a has substantially the shape of a half-moon. It may be noted that the partition 3 has a considerable wall thickness since it extends from the axial compartment 11 to the inner wall of the pile 1 between the passages 12a. The partitioning 3 thus occupies more than half of the section of the pile 1. It can be seen as a solid bar whose axis has been hollowed out to form the axial compartment 11 and whose external surface has been dug to form the side passages 12a. Because the internal partition 3 comes into contact with the inner wall of the pile 1, its axial centering inside the pile 1 is automatic.

Each passage 12a has a cross section s2. The sum of the sections s2 of all the passages 12a corresponds to the total section S2. According to the invention, the total section S2 is smaller than the section S1 of the axial compartment 11. In addition, as shown in FIG. 6, the two passages 12a located at the level of the helical fin 2 are partially filled with an element of filling that forms a protrusion or a boss 31 relative to the outer wall of the partition 3. These bosses 31 are intended to reduce the cross section of the passages 12a so that there remains only a reduced section s2 '. The fluid is thus forced to flow at high speed along the inner wall of the pile 1 directly at the helical fin 2. These bosses or protrusion 31 may be considered as cross section reducers.

In practice, the partitioning 3 can be made by extrusion so that it has a constant cross section along its entire length. The partitioning 3 can be made of metal or plastic. Preferably, the partitioning 3 will be made of plastic to prevent heat exchange between the central compartment 11 and the lateral compartment formed by the seven passages 12a. As for the reducing passage section or bosses 31, they may be in the form of inserts reported inside the passages 12a. Alternatively, the passage section reducers or bosses 31 may be formed directly by the partition or by the pile, for example in the form of an internal extension of the fins.

The fluid will therefore exchange calories or frigories with the soil in which the piles 1 are implanted. This exchange will be made more efficient and faster thanks to the action of the fins 2 which will have a large surface in contact with the ground and will be thermal contact with the metal tube constituting the pile. The fluid flowing in the piles 1 will be then collected in pipes 4 which will route it to at least one system 5 for heating or cooling a room 7, said room 7 being preferably but not necessarily based on one or more piles according to the invention.

In a particularly advantageous embodiment shown in FIGS. 1 and 2, the heating or cooling system 5 will consist of a water / water heat pump, preferably reversible, the primary circuit of which will exchange calories or frigories with one or more piles connected to the system 5 by a circuit 4 and whose secondary circuit will exchange calories or frigories with a circuit 6, for example a low temperature heating floor.

In a simplified embodiment illustrated in FIG. 3, the circuit 4 collecting the fluid circulating in the pile or piles according to the invention will be connected to a heater battery 15, that is to say to an air / fluid exchanger, the renewal air of the room passing through said exchanger. This heating and cooling device, in particular described in the application WO 2006/109003, makes it possible to provide all the functionalities of the systems known under the name of Canadian wells (or Provençal wells or also Californian wells) by means of earthworks inexpensive, reduced footprint and easier maintenance.

In the simple case represented by FIG. 3, three piles 1 according to the invention are used. These piles comprise fins 2 and a conical lower end 9 which allowed to drive them by screwing and promoting heat exchange with the ground. They are provided with internal partitions 3 in which the fluid circulates, in this case water optionally supplemented with antifreeze. This fluid is collected by a circuit 4, preferably buried a few tens of centimeters below the ground level. The fluid circulates continuously through the action of a pump or circulator 16 so that it exchanges, according to the climatic conditions of the moment, calories or frigories with the fresh air introduced into the room by the action a fan (not shown) that crosses the said fresh air a heater heater 15 in which circulates the fluid which benefits from heat exchange with the ground, exchanges which occur as a result of the circulation of said fluid in the piles and which are made particularly efficient and fast thanks to the presence of helical fins 2. To improve the exchange capacities, and to optimize the operation in day / night cycles, all or part of the partitions or the zone at the periphery of the tube released by the compaction of the earth due to the rotation of the fin mainly vertical 22 may be filled with a substance having the property of changing state at a temperature close to the desired comfort temperature, for example 20 ° C and in any case greater than 10 ° C. This substance will be chosen, for example, from paraffins, which have the property of storing and restoring about 50 kilocalories per gram, during the passage of their stage of change of state. This particularly advantageous embodiment will substantially improve the performance of liquid / soil heat exchangers according to the invention, without significantly increasing their cost. In particular, this mode of execution will allow during the summer seasons to restore during the day due to the change of the solid state in the liquid state large amounts of frigories. These frigories have been stored beforehand during the night when the outside temperature is at a temperature below the melting point of the paraffins, the storage resulting from the passage from the liquid state to the solid state of the paraffins contained in the walls forming the partitions. 3 and / or filling the hollow cylinder.

In the upper part of the piles according to the invention, there will be placed a flange 8 which will serve as a cap and to which may be attached the internal partitions, defining an axial compartment and a side compartment. The diameter of the tube forming the interior partitions should be chosen so that only a small circulation space remains between this partition and the outer wall of the pile, so that the circulation of the fluid in this part of the pile is will produce in a turbulent regime. Preferably, the partition wall will comprise an extra thickness or an outgrowth at the outer fin (s) so that the heat exchanges between the fluid and the pile wall are favored in this zone which has the advantage of a high potential for thermal transmission towards the surrounding environment which is found to be the floor.

In general, all the couplings with different heating, air conditioning, preheating or cooling systems for residential premises or residential space renewal air, and in particular couplings with heat pumps Air / Air, Air / Water, Water / Water, Water / Air, Refrigerant / Water or Refrigerant / Air can be used without departing from the scope of the invention.

The invention will find preferential applications for the realization of light leisure homes that require foundations of low or medium depth and frost protection by heat exchanges with the ground including non-occupancy period. In this particular case, the circulation of liquid between the ground and at least one heater battery may be caused by a pump powered by photovoltaic solar cells. The invention will also be particularly well suited to the realization of agricultural or industrial structures such as horticultural greenhouses or sheds or warehouses, it being understood that these preferred applications have no limiting character.

In the case where the piles according to the invention are used for the double application of heat exchanger and light foundations, there will be provided a connecting piece 10 between firstly the upper part of the piles 1, which upper part will be equipped with a flange 8, and secondly the floor 17 or a support piece of the lower structure of the building 7.

Claims

claims

1. - hollow pile driven substantially vertically into the ground by screwing, the pile comprising an inner wall (1 i), an outer wall (1e) and a wall thickness, the pile further comprising:

- At least one helical fin (2) of flattened shape and having a reduced pitch capable of causing a depression of a few centimeters per turn, when the pile is subjected to rotation, the helical fin (2) being mechanically bonded and being in thermal contact with the outer wall (1e) of the pile (1),

- an interior partition (3) delimiting an axial compartment (11) and a lateral compartment (12) communicating with one another at the bottom (13) of the pile, characterized in that:

the helical fin (2) is in direct thermal contact with the lateral compartment (12) through the outer wall thickness (1e) of the pile (1), and

- The side compartment (12) has a passage section (S2) substantially smaller than the passage section (S1) of the axial compartment (11).

2. Vertical pile according to claim 1, wherein the lateral compartment (12) is provided with a passage section reducer (31) at at least one helical fin (2).

3. Vertical pile according to claim 2, wherein the passage section reducer (31) is integral with the inner partition (3).

4. Vertical pile according to claim 1, 2 or 3, comprising a plurality of sections assembled together sealingly by welding by embedding or by screwing and in which each section comprises in the lower part a helical fin (2) in thermal contact with the outer wall (1e) of the pile.

5. Vertical pile according to any one of the preceding claims, further comprising an upper flange (8) having passage openings for pipes (4) communicating in sealed manner with each of the two compartments defined by the internal partition (3). , the upper flange (8) being secured to a floor (15) or a lower structure of a building (7) by a connecting piece having through holes for the pipes (4).

6. Vertical pile according to any one of the preceding claims, wherein the fluid flowing in the compartments (11, 12) inside the pile is used to feed the primary circuit of a thermodynamic machine (5) of the type. heat pump.

7. Vertical pile according to any one of the preceding claims, wherein the inner partition (3) is partially filled with a substance having the property of changing state at a temperature close to 20 ° C and preferably by a substance to paraffin base.

8. Vertical pile according to any one of the preceding claims, wherein the fluid extracted from the side compartment (12) is connected by pipes (4) to a liquid / air exchange battery (15), said battery (15) ) being itself connected by pipes to the axial compartment (11), the lateral compartment assembly (12) + pipes (4) + battery (15) + axial compartment (11) forming a sealed and sealed circuit further comprising minus one circulator (16).

9. Vertical pile according to claim 8, wherein the battery (15) is traversed by the renewal air supplying the building of which said pile forms part of the foundations.

10.- Installation for heating, or air conditioning, treatment or pre-treatment of the air, comprising at least one vertical pile according to at least one of the preceding claims.

11. Foundation for industrial, agricultural, residential individual or collective or recreational building, comprising at least one vertical pile according to at least one of the preceding claims.