JP2002372314A - Method and device for practical utilization of subterranean heat of subbase of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve a problem on a cost performance, such as installation cost and maintenance control cost of clean subterranean heat of the subbase of a building since the heat is low in thermal efficiency, although stably obtained at a constant temperature throughout a year. SOLUTION: Piping is passed through a building body in the ground and a pile to circulate refrigerant liquid. Subterranean heat is collected by a heat exchanger and actively used as a heat source for cooling, heating and a feed of hot water, throughout a year.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for utilizing geothermal energy.

[0002]

2. Description of the Related Art Conventionally, there has been a method of utilizing geothermal energy by burying a dedicated pipe and circulating a refrigerant liquid. There were many problems. (For example, see JP-A-06-137)
(Refer to No. 689)

[0003]

Although the calorific value is small,
Utilize stable and clean geothermal at a low cost throughout the year, and simple, easy and cheap maintenance method,
Increase economic efficiency with equipment.

[0004]

SUMMARY OF THE INVENTION According to the present invention, an underground concrete foundation pile, a pipe or the like, through which a refrigerant liquid is passed, which has not been used in the past, is buried and circulated to take in geothermal heat, and to heat and cool a building. Use it as a heat source.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a refrigerant liquid circulation pipe (3) and a pipe-shaped hollow rebar (4) which also serves as a refrigerant liquid circulation inside a concrete foundation pile (2) below a building foundation (1) laid on the whole building. , And circulates the refrigerant liquid to take in the geothermal heat (8) under the ground around the foundation pile with little temperature change throughout the year, and use the heat exchanger (6) to heat and cool the building through the radiator (7) on each floor. It is sectional drawing of the building which is doing.

FIG. 2 is a sectional view of a building without a concrete pile (2). A refrigerant liquid circulation pipe (3) and a pipe-shaped hollow rebar (4) that also serves as refrigerant liquid circulation are embedded inside the concrete base (5) in the underground part of the building, and the refrigerant liquid is circulated to surround the foundation pile. FIG. 4 is a cross-sectional view of a building that takes in geothermal heat with a small temperature change throughout the year and uses a heat exchanger (6) to heat and heat the building through a radiator (7) on each floor.

[0008]

The present invention is embodied in the form as described above, and has the following effects. (A) Since the building frame is used, the equipment cost is low. (B) Clean, inexhaustible and free geothermal energy can be utilized throughout the year. (C) If a problem occurs in the strength and safety of the pile due to an earthquake or the like, it can be easily checked. (D) A heat source made in a cheap time zone, such as midnight power, can be stored in a pile or a base of a skeleton.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a building having a concrete pile incorporating the present invention.

FIG. 2 is a sectional view of a building without a concrete pile incorporating the present invention.

FIG. 3 is a sectional view of a pile in which a refrigerant pipe of a concrete pile is formed into a spiral shape and a single circulation circuit is formed for each pile.

FIG. 4 is a cross-sectional view of a pile in which a refrigerant pipe of a concrete pile is formed into a vertical straight line and two pipes are connected to form a plurality of circulation circuits in one pile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building foundation 2 Concrete foundation pile 3 Refrigerant liquid circulation pipe 4 Pipe-shaped hollow steel bar also serving as refrigerant liquid circulation 5 Concrete frame base 6 Heat exchanger 7 Radiator 8 Soil

Claims (2)

[Claims] 1. A pipe (3) for circulating refrigerant liquid or a pipe-shaped hollow reinforcing bar (4) for circulating refrigerant liquid embedded in a concrete foundation pile (2) which is driven deep into the lower soil of a building foundation (1). A geothermal utilization method and device that circulates refrigerant liquid to take in geothermal with little temperature change around the foundation pile throughout the year, and uses the heat exchanger (5) as a heat source for heating and cooling hot water in buildings. 2. A refrigerant liquid circulation pipe (3) or a pipe-shaped hollow rebar (4) that also serves as a refrigerant liquid circulation is buried inside a concrete skeleton (6) in an underground part of a building to circulate the refrigerant liquid. A geothermal utilization method and device that takes in geothermal with little temperature change throughout the year around the foundation pile and uses the heat exchanger (5) as a heat source for cooling and heating hot water in buildings.