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Coupling 90×63 HDPE

Geothermal technologies: environmental friendliness, efficiency and economy

Geothermal technologies are becoming a leader in the field of heating and cooling. They are a reliable solution for the efficient use of renewable energy. They provide heating, cooling of buildings and hot water supply, using the heat of the earth. The use of these systems reduces electricity costs and minimizes carbon dioxide emissions. For connections, the 90×63 HDPE coupling is used.

Advantages of geothermal technologies

1. Reliability and durabilityGeothermal systems operate year-round, regardless of weather conditions.
2. Environmental safetyHeat pumps use the earth's heat, reducing dependence on fossil fuels.
3. Economic efficiencySignificant savings are achieved on heating and cooling due to reduced operating costs.

How does a geothermal heat pump work?

The geothermal heat pump uses electrical energy to convert the heat of the earth into usable energy for heating. The system is based on a geothermal circuit:

• Horizontal circuitPipes placed under the soil layer, requiring a large area.
• Circuit verticalThe pipes are lowered into deep wells, saving space.

Regardless of the type of circuit, the heat exchanger transfers the accumulated heat to the circulating fluid in the system. The 90x32x8 geothermal water collector and 90×63 HDPE coupling are used to connect all the wells into a single collector.

System elements

1. Ground heat exchangerMade of HDPE pipes, it withstands pressures of up to 20 atmospheres.
2. Geothermal water collector 90x32x8. It joins the system circuits and connects to the heat pump.
3. Circulating fluid. Usually a mixture of ethylene glycol or propylene glycol with water.
4. Coupling 90×63 HDPEUsed for welding connections and flow regulation.

Geothermal wells: installation features

The wells are placed in wells with depths between 70 and 300 meters. The main types:

• Unicircuit (2×32 mm sau 2×40 mm).
• Double-circuit (4×32 mm).

The temperature at a depth of 150 m is stable (~15 °C), which is sufficient for the efficient operation of the system. However, deep drilling requires significant investments.

Installation and design

1. Carrying out geological analysis of the terrain.
2. Project development depending on soil type.
3. Compliance with safety regulations and environmental standards.
4. Using high-quality materials, such as HDPE pipes.

EARTH PROBE

The earth probe consists of a double U-shaped tube placed in the probe. The module is 1 m of the probe. The maximum depth of a probe is 100 m.

The amount of energy required for the heat pump depends on its power, which determines the number and depth of the wells. The minimum distance between the wells is 5 m. The heating objects must be at least 5-10 m apart. The heating capacity is calculated depending on the composition of the soil. Before drilling, a geological analysis of the terrain is required. The section map will indicate the installation pattern and the thermal properties of the soil. Drilling should be carried out by specialists, who also install the heat exchanger, then concrete it.

The 90×63 HDPE coupling allows the transition between sections of different diameters.

Soil types and heat transfer

Type is also left	Heat transfer (W/m)
Dry sand	< 25
Wet sand	65-80
Stop left	60
Clay	35-50
chalk	55-70

CONSTRUCTION OF THE TECHNOLOGICAL SYSTEM

1. flexible connection;
2. thermometer;
3. filter;
4. expansion tank with pressure gauge;
5. Coupling 90×63 HDPE;
6. circulation pump;
7. grounding;
8. flowmeter (with dial);
9. distribution manifold;
10. distribution manifold.

Filling with antifreeze solution and de-aeration is done for each circuit separately, by transferring an antifreeze mixture from a separate tank, using a submersible pump.
Freezing temperature of the solution for the ground circuit (ground loop), for the ALTAL heat pump GWHP, is approximately -5 to -12 °C.
It is essential that all elements of the circuit are made of anti-corrosive materials. The distribution device and the collector can be made of plastic or copper pipes, etc.

HEAT COLLECTOR PRODUCTION

The heat exchange pipes, 32 or 40 mm, are connected to plastic ends by means of U-shaped elbows and 90×63 HDPE couplings. Sometimes a two-pipe system is used. A 2-meter weight, such as a concrete pipe, is attached to the plastic end to guide the heat exchanger into the well. The 90×63 HDPE coupling (790×63 polyethylene transition coupling) is used to connect the components by welding.

After drilling and removing the equipment and water, if the ground permits, the pairs of heat exchange pipes are inserted without protective casing. Bentonite or cement is pumped under pressure through the central tube, between the heat exchangers, to completely fill it.

To connect the wells, a 90x32x8 geothermal collector is used. The length of the pipes in the well is equal to twice the depth of the well plus the distance from the heat pump. An example of a two-pipe system is illustrated in the diagram.

Connecting system elements

The 90×63 HDPE coupling is also used for connection to the 90x32x8 geothermal water collector, for transition between sections. This method ensures tightness and durability of the connections. The use of professional equipment and qualified specialists guarantees the reliability of the system.

Summary

Geothermal technologies represent an innovative solution for ecological heating and cooling. They are reliable, economical and safe for the environment. Correct design and quality installation ensure the durability and efficiency of the system. By investing in geothermal equipment, you opt for a future based on renewable energy.

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