Geothermal

What is geothermal energy?

It is the energy that can be obtained by harnessing heat from within the earth. The heat is stored in soils, rocks and groundwater. There are geothermal resources depending on the temperature of the earth: From 150 degrees Celsius upwards, steam is used directly through turbines to produce electricity.
Between 90 and 100 degrees is also used to produce electricity and heat for industry by means of a heat exchange fluid. Between 30 and 90 degrees is used for heating in residential buildings, public buildings, industries and agricultural systems. Below 25 degrees, which is what we are dealing with here, it is used for heating (hot and cold) and domestic hot water (DHW) for the home by means of a geothermal heat pump.

Cabot Energías Activa

How do you harness the heat in the ground to convert it into energy for heating and cooling your home?

The heat is extracted from the house by constructing wells almost identical to those used to extract water, which can be closed (without water) or open (with water) that pass to a geothermal heat pump, which, through an evaporator and a compressor, transforms the energy into hot or cold water to air-condition the house.

Cabot Energías Activa

What are the advantages and disadvantages of geothermal energy?

Energy saving

Geothermal energy is the energy, apart from being clean, renewable and infinite, is the most efficient, for example, compared to fossil energy such as natural gas, the energy saving is 75%.

without chimneys geothermal advantage cabot energia activa

No chimneys, fumes or fans outside

In a geothermal installation you only have an indoor unit the size of a fridge, depending on the size of the house, of course, but no fumes, no smelly chimneys, no noise, no annoying fans or machines outside that spoil the terrace or garden.

geothermal advantage emission reduction cabot energia activa

Reduction of C02 emissions

The use of geothermal energy is also advantageous for the environment as it helps considerably not to increase CO2 emissions and if it is combined with a photovoltaic system that produces electricity, the energy cost is zero.

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By extracting the energy from your own land we consider it to be local energy, so there is no need for trucks or ships to transport the fluid, no large cables or trenches and no power plants hundreds of kilometres away from home. The main disadvantage is the drilling and construction of the wells, however the amortisation of a residential geothermal installation is amortised over 5 to 10 years. If the wells are well dimensioned, they do not become saturated and produce energy for life.

What do I need to install geothermal energy in my home?

The only condition is that there is land to extract the energy from the ground. In new buildings, the installation can be carried out underneath the building before construction.
Which air conditioning systems can I install in my home with geothermal energy?

Ceiling, floor or wall fan coils can be installed to cool or heat the house and underfloor heating to heat the house. Even low consumption radiators can be installed.

And of course, domestic hot water which is almost free in summer as we dissipate the excess heat to the DHW accumulator.

We can also heat the pool water, also free in summer as we can send the excess heat to the pool before sending it to the wells.
What is the process if I want a geothermal installation in my house?

The first step is to contact cabot energia activa and with the plans of the house we will prepare an energy and geological study of the subsoil with a visit to the site.

After the presentation of the study, project and budget of the installations and a mining engineering, the budgets are signed by the client and the installation process begins.

The first step is to present the documentation to the environmental department, in the general directorate of water resources, to obtain the permits for the drilling(s).

At the same time, work can begin on the interior of the house, such as the installation of pipes, machine rooms, underfloor heating and fan coils. Once the licence for the boreholes has been obtained, the wells are drilled and the probes are inserted.

Once finished, it is filled with glycol antifreeze liquid and the wells are balanced and purged, then commissioning of the system begins. All this by our qualified staff trained in geothermal and air conditioning installations.

Approximate prices for geothermal installations according to power and energy demand.

*Prices subject to change and depending on the customer's demands.

House between 70 and 120 m2

8-10 kws of power

_from35.000€

Includes:

Perforations
Probes
Heat pumps
Underfloor heating
Fancoil

House between 120 and 180 m2

12-14 kws of power

_from40.000€

Includes:

Perforations
Probes
Heat pumps
Underfloor heating
Fancoil

House more than 180 m2

more than 15 kws of power

_from50.000€

Includes:

Perforations
Probes
Heat pumps
Underfloor heating
Fancoil

Does geothermal energy work in the Balearic Islands?

In the Balearic Islands it works perfectly because from a depth of 15 metres the temperature oscillates constantly at 15 degrees Celsius and we take advantage of this to heat in winter and cool in summer. In winter when the air is cold the subsoil will be warmer and in summer when the air is hot the subsoil will be colder. In addition we can obtain domestic hot water and heat the pool water free of charge when the heat pump is cooling the house as the excess heat can go to the DHW tank or to the pool.
How does a geothermal heat pump work?

1- The mixture of water and antifreeze inside the buried PE collectors (wells) absorbs the heat stored in the ground. 2- In the evaporator the energy from the ground passes into the refrigerant and increases the temperature and causes evaporation from the ground.

3- The compressor compresses the refrigerant gas to increase the pressure and again the temperature. In the condenser the refrigerant gives up its energy to the heating and DHW system.
4- Subsequently, as the fluid is still too hot and the pressure too high, the refrigerant is introduced into the expansion valve where it loses pressure and temperature to start the process again in the evaporator.
Why Cabot Energía Activa as an installation company?

Firstly for its professionalism and seriousness in the work, for the work prior to the execution, during the work and in the after-sales service.

We have accumulated experience because it was in 1957 when Bernat Cabot Seguí was the founder and promoter of the company BERNAT CABOT and after different changes and evolutions we have reached the company of what today is the company CABOT ENERGIA ACTIVA SL., transmitting the knowledge and energy to his son Guillem and this one again to his son Bernat, being already the third generation of businessmen in CABOT.

-Secondly, because we are really strong in geothermal energy, aerothermal energy and air conditioning and plumbing in general. We have a very effective and well-prepared staff, trained and hard-working and above all very committed to the company and its values.

-Third, because if you don't want to take care of anything, we do it for you. We advise you on everything, we help you during the work and together we are a team and you only have to press a button or open your mobile application and start the installation. It's that easy.

-Fourth, because we will always be at your side, for whatever may happen you have a 24 hour after sales contract for any breakdown or eventuality, because we have our own SAT team, who can help you remotely or physically.