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Monday, September 4th, 2017

Geothermics: the revolution to pay four times less for hot water

A growing number of households are opting for this efficient and eco-friendly measure that entails a cost-effective alternative to solar panels in HVAC systems


Domestic Hot Water (DHW) is, after heating, the second most important energy cost in a household. Almost a third of the resources are set aside for the generation of hot water. Consequently, the industry is always investigating more efficient systems that not only reduce the environmental impact but lighten the final consumer invoice. There is life beyond the instantaneous methods such as heaters, cumulative ones like boilers, and even hybrids. For several years, water heating is one of the most used applications of the thermal solar energy, which results in an economic saving and a reduced environmental impact on not having to consume electricity or gas. However, it can still go further with a system that promises to be revolutionary for the future; Geothermics has arrived to stay.

Geothermal energy is based on the use of terrestrial heat; this energy is not generated, it is simply displaced to where you want it to be used. “To this definition could be added the energy that is found stockpiled in the surface waters, whether continental or marines”, indicates José Salido, the spokesperson of the company Itecon and specialist in these types of services. We are talking about an unlimited resource that can be constantly used and does not produce any negative impact on the environment. It is renewable and continuous, clean and efficient, and its capacity can cover both the DHW demand of a household or a much bigger installation, such as a covered communal swimming pool.

Looking at the figures. In a residential building with a HVAC system by electric refrigeration and natural gas heating, as well as a swimming pool sustained 60% by thermal solar panels, we will talk about an energy consumption of 188,384.81kWh and emissions at 56,977.81 kilos of CO2. In the case of opting for the geothermal renewable energy, these figures will reduce to 39,102.67kWh and 14,546.19 kilos of CO2. From this data we can conclude that the primary energy consumption as well as environmental emissions are four times lower if a geothermal system is used. Therefore, the bill will also be four times lower, consequently saving money for the whole community.

Swimming pools with geothermics

“The initial investment is very similar to the traditional heating and cooling system, but the costs are much lower with an energy consumption of 50-70% less”, explains Itecon. For the installation of this system should be carried out a prior study that determines the geothermal energy uptake capacity (due to the drilling or excavation that has to be carried out to place the sounding lines). However, it involves saving significant space, being only one team and with no location problems.

Many improvements can be incorporated in order to lighten the procedures, such as meter boxes for each property that could generate automatic and scheduled invoices, simply detecting the impulses emitted. There are a lot, thus, the properties that can take advantage of these resources. “The provisions of geothermal energy in Spain are excellent: in the case of electricity production and thermal uses, it has great potential, being a source of competitive energy”, assures Salido, spokesperson of the company associated to businesses like Porcelanosa. Between potential clients of the same, not only will there be properties, but also hotel centers or sports complexes, these are just some examples. Although the installation carries a cost, in turn it guarantees the viability of the installation, and the return is constant.


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