F Ollon (Grosseto) - Twenty flats of 85 square meters with garden and garage. Tuesday, March 31 will be opened in Follonica, in the province of Grosseto, and will have a record will be the first in Italy to work with the energy of the earth and those who inhabit them not pay a penny of the bill and will have free heating during the winter and air conditioning, also at no cost, in the summer. The houses 'bills to zero in fact use the so-called' low energy geothermal, "or energy that is released naturally from the earth and can be channeled into heating the house using special probes. The project was carried out by the study Ecogeo of Siena and the Cooperative Building the Future of Follonica. The apartments have cost 255 000 € each, a price very much in line with the market.
TECHNOLOGY - The earth's natural heat is captured through a particular technique. "We drill the ground for a hundred yards - Biserni says James, a geologist study Ecogeo - and then using probes from the maximum diameter of 15 cm connected to the boiler. Finally, the heat is amplified by the heat pump and pushed the coils placed under the floor. These heat up the environment without spending a penny of the energy bill. " The most interesting thing is the dual function of the system. In summer, in fact, turns into a great cooler to cool the temperature of every room. Together with the use of low energy geothermal, engineers have used photovoltaic systems. However, to make feasible a total energy self-sufficiency, manufacturers have used special materials. As a special brick energy efficient, natural insulation for the roof and walls. High cost, then? Not at all, the apartment was sold at a price very much in line with that of the traditional market. The construction of flats' bill to zero "is not only an environmental challenge but also a way to revive the housing market also contract by the international crisis.
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