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There is a lot of talk about renewable energy sources, though it's not always clear exactly with this term refers to, nor the stakes involved.
Renewable energy is energy generated from solar, water, wind, biomass, and geothermal sources. This energy results from transfer phenomena and is inexhaustible as opposed to fossil fuels like coal, oil, and gas, which are indeed finite deposits. The interest in renewable energy is a direct result of climbing fossil fuel prices; funds granted for research in this field diminish when oil prices decrease, and yet, developing these alternative energy sources presents real long-term advantages.
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 First of all, the refining, transport, and consumption of fossil fuels are responsible for most of the environmental damage caused by human activity:the greenhouse effect, acid rain and air, soil, water pollution, etc.
Secondly, the supply of fossil fuels is limited:oil and gas reserves will run dry this century, while coal deposits will be exhausted during the 22nd century. Fossil fuel reserves will last longer into the century if consumption is reduced.
Finally, energy expenditure represents a hefty outlay for industry, the self-employed, and households.
While renewable energy initiatives are often undertaken at the state level, individual parties can also implement economical and environmentally responsible energy solutions: wood burning heating systems in forested areas, solar panelss for hot water heaters in sunny regions, biogas production by livestock farmers, wind pumps for water, and geothermal heating systems for houses or small apartment buildings everywhere.
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Geothermal heat pumps (thermodynamic heating systems with buried loops) capture ground-source heat energy and transfer is to the home. This technique is on the rise, offering economic ans ecological advantages for individual housing as well as small apartment buildings, in both new construction and refurbishing projects.
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To harness the energy supply contained in the earth's soil, the geothermal process utilises a refrigerating circuit based on a thermodynamic principle: ground heat, continually replenished by the rain, wind, and sun's rays, is collected by heat-absorbing loops buried 60 cm below the surface of the ground or by geothermal probes, sunk vertically into the soil. The loops lie beneath the garden's surface and are thus invisible and extremely durable.
The great quantity of energy absorbed by the soil and the adequate design of the loops guarantee efficient heat collection for the life of the system.
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A thermodynamic generator adds extra value to this renewable "free" energy source by transferring it to the house interior, meeting 100% of the home's heating requirements.
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Geothermal heating ranks among the top-flight heating systems, offering the best performances in terms of comfort.
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Flexible and precise temperature control.
With geothermal heating distinct "comfort zones" can be defined with regard to the room's purpose and resident lifestyles.
Various temperature regulation mechanisms are available depending on the technology employed.
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For the direct condensation and evaporation system, a compressor of suitable power regulates the amount of heat to be released in each comfort zone (daytime areas, sleeping areas). With hydraulic distribution technologies, heating temperatures are regulated by adjusting the amount of water that flows through each coil of the heated floor.
A pre-installation study at the design stage identifies the rooms that lose the most heat. More coils are then embedded in the floors of the coldest rooms (for example, those facing north) to compensate for the heat loss.
Underfloor heating: uniform heating
Low temperature underfloor heating is the best solution for ensuring an even temperature from floor to ceiling. The air is never "dried out" and is therefore healthier, the floors are never cold in winter and the living spaces are unencumbered by heating fixtures.
Domestic hot water in unlimited quantities
Domestic hot water is available at no extra cost: thanks to the high temperature of the refrigerant as it exits the compressor, it can heat the contents of a 300 litre hot water tank using a specifically designed heat exchanger.
Optimal comfort with less constraint
Comfort means freedom: geothermal heating systems spare you the task of filling the oil tank as well as cleaning the ducts and pipes. It's easy to operate and requires no specific maintenance.
This convenience costs significantly less than traditional heating systems: for every kilowatt of electricity used by the compressor, three to four kilowatts of heat are generated, depending on the configuration. Consumers can thus save up to 75% on heating bills as compared to traditional electric heating systems in addition to the savings on maintenance and cleaning costs. For example: it costs 29.20 €, tax included, per month to heat and provide hot water for a house of 120 m2, located at an altitude of 700 meters in the Haute-Loire (Central France).
The initial investment is approximately equal to the outlay for a traditional heating system, while the operating costs are substantially lower. The investment quickly pays for itself.
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