WO2012050292A1

WO2012050292A1 - Method of constructing a heat exchanger of an integrated steel pipe, and heat pipe using underground heat

Info

Publication number: WO2012050292A1
Application number: PCT/KR2011/004545
Authority: WO
Inventors: 김응춘
Original assignee: (주)세종기술엔지니어링
Priority date: 2010-10-12
Filing date: 2011-06-22
Publication date: 2012-04-19
Also published as: KR101036905B1

Abstract

The present invention relates to a method of constructing a heat exchanger of an integrated steel pipe, and a heat pipe using underground heat, and more particularly, to a construction method for burying a heat exchanger underground. In the construction method, the steel pipe and the heat pipe may be integrated with each other underground, in which an exploratory hole is formed because drilling technology and heat exchanger efficiency should be improved to reduce construction costs in technologies that are difficult to apply to general businesses due to the relatively high investment required for underground heat drilling. Also, a portion of the heat pipe may contact the outside to quickly cool or heat the heat pipe. Here, the heat exchanger and the fluid pipe may be buried underground to improve efficiency when compared to a technology in which a heat exchanger and a fluid pipe are exposed to the outside. Also, an outer surface of the steel pipe may be coated to prevent a surface contacting the outside from being corroded, and the fluid pipe may be maximally shortened in length to contact an upper end of the heat pipe, thereby improving efficiency. According to the method of constructing the heat exchanger of the integrated steel pipe and heat pipe using underground heat, 2-stage exploratory holes may be formed to separately drill exploratory holes having a large diameter and a small diameter, thereby reducing construction cost. Also, a portion of the heat pipe may be buried in a rock layer to directly receive underground heat. Also, the inside of the heat pipe may be filled with a thermal transfer material in a state where the inside of the heat pipe is maintained under a vacuum state to quickly receive underground heat. Also, the heat exchanger and a flow controller may be buried in a sand laying layer to prevent noise occurring from the heat exchanger and heat from being dissipated to the outside.

Description

Construction method of heat exchanger of integrated steel tube and heat pipe using ground heat

According to the present invention, the construction cost can be reduced only by increasing the efficiency of drilling technology and heat exchanger, which is difficult to spread in general business due to the relatively high investment cost for underground heat drilling. Therefore, the steel pipe and the heat pipe are integrally formed on the ground where the borehole is formed. Part of the heat pipe is brought into contact with the outside to quickly cool or warm the heat pipe, and the heat exchanger and the fluid tube are buried in the ground, which is more efficient than the above technique in which the heat exchanger and the fluid tube are exposed to the outside, and outside the steel tube The surface coating is to prevent corrosion of the contact surface with the outside, and relates to a construction method for embedding a heat exchanger underground to provide a high efficiency by making the fluid pipe as short as possible and contacting the top of the heat pipe.

At present, the construction of heat exchanger is an underground heat source heat storage heat pump system, which uses underground temperature of about 100 ~ 150M underground as heat source of heat pump for cooling, heating and hot water supply.

Geothermal heat is a stable heat source that maintains an average temperature of 15 ℃ ~ 20 ℃, and unlike air heat sources, heat pumps can be applied anywhere in the country regardless of region. A system that embeds heat exchange pipes (PE) in the basement, circulates water or antifreeze into the pipes, transfers heat from the ground into the building through the system in winter, and releases heat generated from the heat pump to the ground in summer. I'm using it.

In addition, the Republic of Korea Patent Registration No. 10-0967085 is to prevent the pitch of the spiral heat exchanger tube to be changed to prevent the thermal efficiency is lowered, and the underground heat exchanger is made in the form of a module so that the construction can be easily shortened the air It is.

The invention described above is buried by forming a heat exchange tube in a spiral form and fixing it in a frame, but a spiral tube may not only crack in a bent portion when corrosion occurs over time, but also a long spiral tube When the fluid moves, it is radiated to the outside and does not provide maximum efficiency.

The present invention is presented as follows to improve the proposed content as described above,

According to the present invention, the construction cost can be reduced only by increasing the efficiency of drilling technology and heat exchanger, which is difficult to spread in general business due to the relatively high investment cost in underground heat drilling. Part of the heat pipe is brought into contact with the outside to transfer underground heat of the rock layer directly to the heat pipe, and the heat exchanger and the fluid tube are buried in the sand laying layer so that the heat exchanger and the fluid tube are exposed to the outside. It is high and aims to prevent corrosion of the contact surface with the outside by coating the steel tube.

In addition, the drilling hole is formed in two stages, and the steel pipe and the heat pipe are embedded to expose the heat pipe to the underground rock layer, thereby providing maximum ground heat.

In addition, the steel tube is buried in the heat exchanger buried in the first stage, the steel tube is coated to have the purpose of preventing corrosion in the water contained in the underground soil layer and rock layer when forming the borehole.

In addition, some heat pipes of the heat exchanger embedded in the second stage are embedded, and some heat pipes are in contact with the borehole surface formed in the rock layer to maximize the efficiency of the ground heat.

In addition, a fluid pipe, a heat exchanger, and a flow controller are embedded in the sand laying layer to prevent heat dissipation because they are not installed outside.

In the present invention for achieving the above object in the construction method for embedding the heat exchanger of the integrated steel tube and heat pipe using underground heat underground,

The construction method includes a drilling step of forming two-stage boreholes in the soil layer 30 and a rock layer 40, and embedding the steel tube 100 and the heat pipe 200 of the heat exchanger 1 in the two-stage boreholes. The heat exchanger device embedding step (S920), the step of embedding the heat exchanger 300 and the flow controller 400 in the sand laying layer 20, and the topsoil layer 10 and sand after the heat exchanger device embedding step (S920) It is characterized by consisting of a warning tape laying step (S940) for embedding the warning tape 50 between the laying layer (20) and a topsoil layer finishing step (S950) to recover after construction.

In addition, the drilling step is to form a one-stage steel pipe drilling step (S900) for embedding the coated steel tube 100, is coupled to the steel tube 100, the heat filling the vacuum heat transfer material therein In order to partially expose the pipe 200 to the rock layer 40, it is characterized in that the two-stage heat pipe drilling step (S910).

In addition, the steel tube is embedded in the one-stage borehole formed in the soil layer 30 and the rock layer 40 by coating the steel tube 100 so as not to corrode when the steel tube 100 is embedded in the heat exchange device embedding step (S920). Step S921 and the heat pipe buried step S922 coupled to the inside of the steel tube 100 and protruding a portion of the heat pipe 200 filled with the heat transfer material by vacuum in the rock layer 40 are embedded therein. It is characterized by.

In addition, when the step of embedding the steel pipe 100 and the heat pipe 200 is formed in the heat exchange device buried step (S920), the thermal insulation / coolant 150 is filled between the steel pipe 100 and the heat pipe 200. To achieve a steel tube inner heat insulation / coolant filling step (S923), it is characterized by consisting of a fluid pipe coupling step (S924) formed by winding the spring on the top of the heat pipe (200).

In addition, the heat exchanger 300 and the flow controller 400 is connected to the fluid pipe 500 of the heat exchanger 1 embedded in the soil layer 30 and the rock layer 40, the sand to prevent noise and heat radiation Buried in the laying layer 20 is characterized in that to form a heat exchanger and flow controller embedded step (S930).

According to the present invention the following effects are obtained.

As a construction method of the heat exchanger of the integrated steel tube and heat pipe using the ground heat of the present invention, by coating the outer peripheral surface of the steel pipe embedded in the soil layer and the rock layer with a coating agent to prevent corrosion by moisture contained in the soil layer and the rock layer Provide effect.

In addition, the thermal insulation / coolant is filled between the steel tube and the heat pipe to provide the effect that the ground heat transferred from the bottom of the heat pipe is not radiated, and maintained at the same temperature.

In addition, the heat exchanger is buried in the sand laying layer is not installed on the ground has the effect of providing a high efficiency for supplying the ground heat.

In addition, by forming a two-stage borehole has the effect of reducing the construction cost when working with boreholes of large and small diameters.

In addition, a portion of the heat pipe can be directly received underground heat transfer to the rock layer, and the inside of the heat pipe is filled with a heat transfer material while maintaining the vacuum state has the effect that can quickly transfer the ground heat.

In addition, by embedding the heat exchanger and the flow controller in the sand laying layer has the effect of preventing noise and heat radiation to the outside according to the heat exchanger.

1 is a construction state diagram of the construction method of the heat exchanger of the integral steel tube and heat pipe using the ground heat of the present invention.

Figure 2 is an exploded perspective view of the construction method of the heat exchanger of the integrated steel tube and heat pipe using the ground heat of the present invention.

Figure 3 is a construction step diagram of the construction method of the heat exchanger of the integral steel tube and heat pipe using the ground heat of the present invention.

Figure 4 is a construction block diagram of the construction method of the heat exchanger of the integrated steel tube and heat pipe using the ground heat of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 and 2 of the present invention are shown for the heat exchanger, and Fig. 3 and 4 show the construction method of the heat exchanger of the present invention.

As shown in FIG. 1 and FIG. 2, boreholes are formed in the soil layer 30 and the rock layer 40 so that the heat exchanger 1 is embedded, and the steel tube 100 of the heat exchanger 1 is embedded. Heat pipe 200 is built in the tube 100, the fluid pipe 500 is wound on the heat pipe 200, the heat insulating / coolant 150 between the steel pipe 100 and the heat pipe 200 Is filled is to be buried in the steel tube cover 110 is finished.

The heat exchanger 1 is embedded in the soil layer 30 and the rock layer 40, the fluid pipe 500 of the heat exchanger 1 is formed of a sand laying layer 20 is coupled to the heat exchanger 300, One side is provided with a flow controller 400 is embedded in the sand laying layer (20).

As the heat pipe 200 is partially exposed at the bottom of the rock layer 40, the heat pipe 200 is directly transferred to the ground heat to obtain maximum efficiency. The heat pipe 200 has a maximum heat transfer material in a vacuum state.

The heat exchanger 1 has been briefly described as described above, and a construction method for the heat exchanger 1 will be described below.

As shown in Figs. 3 and 4, the boreholes are formed in each step, and the heat exchanger 1 is embedded.

The above is divided into a one-stage steel pipe drilling step (S900) and a two-stage heat pipe drilling step (S910).

Perforation of the steel tube 100 and the heat pipe 200 is formed in the soil layer 30 and the rock layer 40.

As the perforation step ends, the heat exchanger device embedding step (S920) is continued, and the next step is formed in the heat exchanger device embedding step (S920).

In the heat exchange device buried step (S920) is a steel pipe buried step (S921), the heat pipe buried step (S922), the steel tube inner heat insulation / coolant filling step (S923), the fluid pipe coupling step (S924), Steel tube cover finish step (S925) is formed.

When the heat exchanger device buried step (S920) is finished, the heat exchanger and flow controller buried step (S930), the warning tape buried step (S940), and the topsoil layer finishing step (S950).

Each step is made as described above, and will be described in detail below with reference to FIGS. 3 and 4.

As shown in FIG. 3, the step (a) of burying the steel tube 100 by forming a borehole and the heat pipe 200 filled with the heat transfer material in a vacuum state inside the steel tube 100 are provided therein. And (b) forming the fluid pipe 500 on the heat pipe 200 and filling the heat / coolant 150 between the inside of the steel pipe 100 and the heat pipe 200 and covering the steel pipe. Step (c) of finishing with 110, the heat exchanger 300 and the flow controller 400 is embedded in the sand laying layer 20, the warning tape (between the topsoil layer 10 and the sand laying layer 20) 50) is buried sequentially in step (d).

As shown in Figure 4, the construction method block diagram of the present invention, to form a large borehole through the first stage steel tube drilling step (S900) to embed the steel tube 100 in the borehole divided into two stages. .

A portion of the heat pipe 200 is embedded into the formed borehole, the two-stage heat pipe drilling step (S910), the borehole is formed.

The heat exchanger is embedded in the formed first stage borehole and the second stage borehole (S920), and the steel tube embedding stage (S921) in which the outer circumferential surface of the coated steel tube 100 is embedded is made, and is heated in the embedded steel tube 100. The pipe 200 is coupled, and a heat pipe embedding step S922 in which a portion of the heat pipe 200 is embedded in the rock layer is formed in the two-stage borehole.

The heat pipe 200 is coupled to the inside of the steel tube 100, and the heat / insulating agent filling step inside the steel tube filling the heat / insulating agent 150 between the steel tube 100 and the heat pipe 200 (S923). After the filling is made, the fluid pipe coupling step (S924) formed by winding the spring on the top of the heat pipe 200 is made.

When the fluid pipe coupling step (S924) is finished, to prevent the outflow of the thermal insulation / coolant 150 inside the steel pipe 100 to prevent the steel pipe 100 through the steel pipe cover finishing step (S925). Is done.

By embedding the steel tube 100 and the heat pipe 200 in the borehole formed in two stages as described above (S920) is made.

When the heat exchanger 1 is embedded, a heat exchanger and a flow controller embedding step S930 are performed upward, and the heat exchanger 300 and the flow controller 400 are embedded in the sand laying layer 20. To reduce the noise in buried (300), to reduce the heat dissipation to the outside more effectively than when on the ground, the distance that the fluid absorbs the ground heat is shortened to maximize the efficiency.

A warning tape embedding step of embedding the heat exchanger 300 and the flow controller 400 in the sand laying layer 20, and embedding the warning tape 50 between the sand laying layer 20 and the topsoil layer 10 (S940). ) Is done.

As the warning tape 50 is buried, it is to inform the worker that the heat exchanger 1 is buried underground when the topsoil layer 10 is being worked on the ground.

When the warning tape buried step (S940) is completed, the construction is finished by finishing the topsoil layer 10 through the topsoil finishing step (S950).

Claims

In the construction method of embedding the heat exchanger of the integrated steel tube and heat pipe using underground heat underground,

The construction method is to form a one-stage steel pipe drilling step (S900) for embedding the steel pipe 100 coated on the soil layer 30 and the rock layer 40, is coupled to the steel pipe 100, the vacuum therein A perforation step formed of a two-stage heat pipe perforation step (S910) for partially exposing the heat pipe 200 filling the heat transfer material in a state to the rock layer 40;

A heat exchanger embedding step of embedding the steel tube 100 and the heat pipe 200 of the heat exchanger 1 in the formed two-stage borehole (S920);

Embedding a heat exchanger (300) and a flow controller (400) in the sand laying layer (20);

After the heat exchange device buried step (S920) and the warning tape buried step (S940) for embedding the warning tape 50 between the topsoil layer (10) and the sand laying layer (20) and the topsoil layer finishing step (S950) to recover after construction ;

Construction method of an integrated steel tube and heat pipe heat exchanger using geothermal heat, characterized in that consisting of.
The method of claim 1,

Steel tube embedding step of embedding in the first stage borehole formed in the soil layer 30 and the rock layer 40 by coating the steel tube 100 to prevent corrosion in the steel tube 100 embedded in the heat exchange device buried step (S920) ( S921 and a heat pipe buried step S922 coupled to the inside of the steel tube 100 and protruding a portion of the heat pipe 200 filled with the heat transfer material by vacuum in the rock layer 40 is embedded therein. Construction method of an integrated steel tube and heat pipe heat exchanger using underground heat.
The method of claim 1,

When the steel tube 100 and the heat pipe 200 are embedded in the heat exchange device buried step S920, the steel to fill the thermal insulation / coolant 150 between the steel pipe 100 and the heat pipe 200. Integral steel tube and heat pipe using geothermal heat, characterized in that the inner heat / coolant filling step (S923) inside the tube, consisting of a fluid pipe coupling step (S924) formed by winding the spring on the top of the heat pipe (200). Construction method of heat exchanger.
The method of claim 1,

The heat exchanger 300 and the flow controller 400 are connected to the fluid pipe 500 of the heat exchanger 1 embedded in the soil layer 30 and the rock layer 40, and the sand laying layer for noise prevention and heat dissipation prevention. The method for constructing a heat exchanger of an integrated steel tube and heat pipe using underground heat, comprising the step of embedding the heat exchanger and the flow controller (S930).