HDPE coupling 32

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HDPE coupling 32

HDPE 32 coupling for welding is used for connecting pipes with control valves. Also for connecting to fittings or in polyethylene (HDPE) pressure piping systems for water supply and geothermal wells. The couplings are made of plastic HDPE by injection molding, followed by processing. This HDPE 32 Coupling is made of polyethylene of the types RE80 (MRS 8.0 MPa) and RE100 (MRS 10.0 MPa). The connection of pipes with HDPE 32 Coupling is carried out in two ways: fillet welding (at the top) or thermal welding with electric resistance. In fillet welding, the pipe and the part are heated with a special device, then joined under pressure. Thermal resistance welding uses fittings with integrated heating elements and specialized equipment. Intended use: use in geothermal systems with vertical or horizontal loops for collecting heat from the ground.

Advantages of geothermal technologies

1. Reliability and durabilityGeothermal systems operate year-round, regardless of weather conditions.
2. Environmental safety. Heat pumps uses heat from the earth, 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?

Geothermal heat pump uses electrical energy to convert the earth's heat into usable energy for heating. The system is based on a geothermal loop:

• Horizontal loopPipes located under the soil layer, requiring a large area.
• Vertical loopThe pipes are lowered into deep wells, saving space.

Regardless of the type of loop, the heat exchanger transfers the accumulated heat to the fluid circulating in the system. HDPE 32 coupling is intended for connecting pipes and fittings to each other.

System elements

1. Ground heat exchangerMade of HDPE pipes, it withstands pressures of up to 20 atmospheres.
2. Geothermal water collector 90x32x8. Joins the system loops and connects to the heat pump.
3. HDPE coupling 32. Ensures tight connections between nodes.
4. Circulating fluidMost often, a mixture of ethylene glycol or propylene glycol with water.
5. Fittings and valves. Used for welding connections, flow regulation.

Geothermal wells: installation features

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

• A probe:  (2×32 mm sau 2×40 mm).
• Two probes:  (4×32 mm).

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

Installation and design

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

EARTH PROBE

The ground probe is a double U-pipe placed in the well. The module is 1 m of the well. The maximum depth of a well is 100 m. The energy required by the pump depends on its power, which determines the number and depth of the wells. The minimum distance between the wells is 5 m. 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 location is required. The section map will indicate the installation configuration and the thermal properties of the soil. The drilling is carried out by specialists, who install the heat exchanger and perform concreting. This HDPE32 polyethylene coupling provides the transition between different sections.

Soil types and heat transfer

CONSTRUCTION OF THE TECHNOLOGICAL SYSTEM

1. flexible connection; 2. thermometer; 3. filter; 4. expansion vessel with pressure gauge; 5. ball valve; 6. circulation pump; 7. grounding; 8. flow meter (with dial); 9. distribution manifold; 10. distribution garden. Filling with antifreeze solution and de-aeration is done for each circuit separately. This is done by transferring an antifreeze mixture from a separate tank, using a submersible pump. Freezing temperature of the solution for the example circuit (ground loop), for the ALTAL heat pump GWHP is approximately -5 to -12 °C. All elements of the loop must be made of anti-corrosive materials. The distribution device and the collector can be made of plastic or copper pipes, etc.

HEAT COLLECTOR MANUFACTURING PROCESS

The heat exchange pipes, 32 or 40 mm, are connected to the plastic ends by means of a U-shaped corner and a HDPE 32 coupling. Sometimes a two-pipe system is used. The plastic end is fixed with a 2-meter weight, such as a concrete pipe, to guide the heat exchanger into the well. This HDPE 32 welding coupling is used to connect the nodes by welding. After drilling and removing the drilling tool and water, if the soil allows, the pairs of heat exchange pipes are inserted without protective casing. Bentonite or cement is pumped under pressure between the heat exchangers through the central tube to completely fill them. A 90x32x8 geothermal collector is used to connect the wells. The length of the pipes in the well is equal to twice the depth of the wells plus the distance to the heat pump. An example of a two-pipe system is illustrated in the diagram.

Connecting system elements

HDPE 32 coupling is also used with the 90x32x8 geothermal water collector for connecting valves. This method ensures the tightness and durability of the connections. The use of professional equipment and qualified specialists is essential for 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 guarantee the longevity and efficiency of the system. By investing in geothermal equipment, you opt for a future based on renewable energy.