PE ground source heat pump pipe

PE ground source heat pump pipe (Figure 1)

Product Features

1. The chemical properties of the pipe are stable

and corrosion-resistant, which makes up for the

serious shortcomings of metal pipes in this regard.

2. It is easy to bend or hot-melt to form a more solid 

shape and the connection with the pipe fittings have 

strong pressure resistance and is not easy to leak.

3. Save investment initial investment is large, but the

operating cost is low and the investment recovery period

is short.

4. The underground heat exchange pipe uses high-density

polyethylene pipe with a service life of up to 50 years.

5. Environmental protection and energy saving: using electricity,

no combustion process, no pollution to the surrounding environment;

no need to use cooling towers, no external units, no heat dissipation

to the surrounding environment, no thermal conductivity effect, 

no noise; no groundwater extraction, and no damage to groundwater

resources; operating costs are only 40~60% of traditional central 

air conditioning.

6. One machine for three uses: heating in winter, cooling in summer,

and providing domestic hot water throughout the year.

It is 2-4 times that of split or window air conditioners.

Fully computer controlled, stable performance, can be remotely controlled

by telephone and can control temperature and humidity and distribute

fresh air.

PE ground source heat pump pipeline (Figure 2)

PE ground source heat pump pipeline form

There are two types of ground source heat pumps: open and closed. 

One is an open system: a heat pump system that directly uses water 

sources for heat transfer. The system needs to be equipped with 

anti-sand plugging, anti-scaling, water purification, and other

devices. 

The second is a closed system: a closed system in which antifreeze

is injected into a closed plastic pipe buried deep underground 

and energy is exchanged with water or soil through a heat exchanger.

The closed system is not affected by factors such as groundwater

level and water quality.

1. Vertical buried pipe-deep soil: Vertical buried pipes can

obtain heat from deep underground soil. Vertical buried pipes 

are usually installed at a depth of 50-150 meters underground. 

One or more groups of pipes are connected to the heat pump unit.

The antifreeze in the closed plastic pipe transfers heat energy 

to the heat pump, which is then converted by the heat pump into 

heating and hot water required for the building. 

Vertical buried pipes are the main mode of ground source heat

pump systems and have been strongly supported by the government

departments in various countries. 2. Horizontal buried pipes - surface

layer: plastic pipes are placed horizontally at a depth of 2 meters

underground, filled with antifreeze liquid, and connected to heat pumps.

Horizontal buried pipes occupy a large area and require a large amount

of earthwork excavation and underground heat exchangers are affected

by surface climate change. 3. Surface water: water from rivers, lakes,

seas, and deep wells are collectively referred to as surface water.

Ground source heat pumps can extract heat or cold from the surface

water to achieve the purpose of heating or cooling. The heat pump 

system using surface water has low cost and high operating efficiency

but is restricted by geographical location and local policies.

Ground source heat pumps are an efficient, energy-saving, and 

environmentally friendly air conditioning system that uses shallow

underground geothermal resources for both heating and cooling;

ground source heat pumps can transfer energy from low-temperature

heat sources to high-temperature heat sources by inputting a small

amount of electrical energy.

In winter, the heat in the soil is "taken out", 

the temperature is raised and supplied to the room

for heating; in summer, the low temperature in the underground

soil is taken out and placed indoors, and the underground temperature

can be balanced all year round; it can be used for both cooling 

and heating, without the need for centralized heating, groundwater, 

or a large outdoor area, and can be used wherever electricity reaches. 

It is widely used in villas, high-end communities, private leisure

clubs, resorts, public communities, permanent buildings, etc.

PE ground source heat pump pipeline (Figure 3)

Installation matters for PE ground source heat pump special pipeline

1. Hot melt socket installation, DN20-DN63mm specifications generally

use this method, the specific process is as follows

(1) Use pipe shears to cut the pipe as per the installation requirements;

(2) Mark the pipe at the depth where the socket is to be inserted;

(3) Heat the hot melt machine die head to about 210℃;

(4) Heat the pipe and pipe fittings at the same time, and then insert 

the socket (wait for a moment after the socket is in place, and do not

twist during the heating, insertion, and cooling process);

(5) Cool naturally; after the construction is completed, it must be 

put into use after passing the pressure test acceptance.

2. Hot melt butt installation, DN110-DN630mm specifications generally

use this method.

(1) Fix the two PE pipes to be installed and connected to the hot melt 

fixture at the same time (the fixture can be replaced with a clamp

according to the size of the pipe diameter to be installed), and

lift the other end of each pipe to the same horizontal plane with 

a pipe bracket;

(2) Use an electric milling cutter to mill the end faces of the pipes

flat to ensure that the contact surfaces of the two pipes can fully

match;

(3) Heat the electric heating plate to 210℃, place it in the middle

of the two pipe ends, and operate the electric hydraulic device to

make the two pipe ends completely contact and heat with the electric

heating plate at the same time;

(4) Remove the heating plate and operate the hydraulic device again

to make the two melted pipe ends fully dock and lock the hydraulic 

device (to prevent rebound);

(5) After a certain cooling time, release the fixing device and the

operation is completed.

(6) After the construction is completed, it must be accepted by the 

pressure test before it can be put into use;

(7) Take windproof measures during the heating process of the pipe. 

During the cooling process, it should be carried out slowly and 

should not be cooled rapidly.

3. Electric fusion connection is suitable for DN≤630mm specifications.

(1) Insert the PE pipe completely into the PE pipe fitting;

(2) Connect the two wires of the special electric melting machine to 

the positive and negative poles of the electric melting pipe fitting 

respectively;

(3) Turn on the power supply to heat the heating wire to melt the 

internal contact PE;

(4) Cooling is completed;

(5) After the construction is completed, it must pass the pressure 

test acceptance before the pipe can be sealed and put into use.

4. Flange connection.

5. Steel-plastic connection.

6. Saddle-type butt installation, which is particularly effective

to solve the main pipeline diversion.