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High-performance and reliable, solar and thermodynamic heating systems reduce energy consumption. Installation costs are also reduced.

Equip your home with a natural heating system

Develop renewable energy sources

To limit oil imports, many energy saving programs developed in the 1970s and 1980s. Among them, the solar and heat pump (PAC) have only had a short-lived success. because at the time unreliable, too expensive and not profitable enough. They are reappearing through renewable energy development (RES) programs. Their goal: decrease the consumption of fossil fuels (oil, gas, coal...), responsible for the release of greenhouse gases into the atmosphere.

The renewal of the solar

  • Solar energy is an efficient and economical source for producing domestic hot water (DHW). It can also be coupled with a heating system.
  • The sensor of an individual solar water heater (CESI) is a glass box that incorporates a copper or aluminum absorber. Heated by the sun's radiation, it transmits its heat to a fluid circulating in a network of tubes. The liquid then warms a storage tank and then, cooled, returns to the sensor for a new cycle.
  • In summer, a CESI heats the water up to 45-60° C. At mid-season, it provides 50 to 70% of the hot water needs. In winter and during periods of little sun, an electrical resistance built into the balloon ensures the complement. Coupled with a traditional installation, the preheated water serves as a supplement to the production of existing domestic hot water (mixed boiler, electric balloon or gas). For annual use, in an average climate in mainland France, a catchment area of ​​3 to 4 m2 enough to feed a tank of 200 l. The cost of a CESI with balloon of 200 l is about 3,750 €: it is amortized over 6 to 8 years (premiums and tax cuts included).
  • The direct solar floor system (PSD) includes sensors from 10 to 20 m2 which feed, via a transfer group, a low temperature heating floor. On the metropolitan territory, an additional heating (oil boiler, gas, electric radiators) is to be expected. Depending on the geographical area, this system allows a saving of 30 to 70% of energy. If the installation incorporates a hot water tank heated by the sensors, it is called the combined solar system (eg "Clipsol PSD3").

The thermodynamic solution

This name comes from the operating principle of a heat pump (PAC) which transfers calories from a cold source (air, water, soil) to a transmitter at a higher temperature level (hot source). Manufactured by many companies, the CAP takes the name of air-air, air-water, water-water or soil-water depending on the sampling environment and that of the return of heat. Some brands: Avenir Energie, Climasol, Deléage, Giacomini, Multibeton, Rehau, Sofath, Sol'Erg, Solterm, Stiebel Eltron...

Thermodynamic heating shown

Thermodynamic heating system

1 - Inground sensors
2 - Thermodynamic generator
3 - Bi-energy water heater
4 - heated floor

Horizontal capture involves an outdoor network of buried sensors at 80 cm depth, a heat pump (PAC) and low temperature heat emitters, heated floors and / or soft heat radiators. The system can also partially heat, and under conditions, the domestic hot water.

Heat pump instructions for use

The operation of a heat pump, also called thermodynamic group, is complex but can be summarized as follows:

  • The calories from the outside environment are captured by an exchanger (the evaporator) in which a refrigerant circulates.
  • This one, warmed by the compressor of the CAP, yields its calories to another heat exchanger (the condenser), to a network of heated floors or radiators.
  • The "cooled" fluid returns to the sample source for reheating.
  • A heat pump provides more heat than it consumes energy. This property results in the Coefficient of Performance, or COP: a COP of 3 means that the installation restores 3 kWh of heating for 1 kWh of electricity consumed.
  • The operation of the CAP is reversible. In summer, it absorbs the internal heat to cool or cool the rooms and evacuates it into the natural outdoor element.

Air-to-air cap

The air-to-air systems are mostly reversible air conditioners. An outdoor unit is connected by refrigeration links to one or more indoor appliances, placed on the wall, floor, ceiling...
In heating mode, an air-to-air heat pump remains efficient when the outside temperature does not drop below 3° C. But offering only a COP of 3, it often requires additional heating. On the other hand, besides the production of heat and cold, it dehumidifies and filters the air of the rooms. The investment is also lower.

Air-water PAC

The air-water system consists, as before, of an outdoor unit that transmits the recovered calories to a water heating circuit (heated floors or low-temperature radiators). In the summer, the opposite phenomenon occurs if the "cooling floor" option has been chosen.
With the same disadvantages as an air-air system, its advantages are related to the principle of heat diffusion by underfloor heating. And inside, there is no air movement, or ventilation noise in heating or cooling mode.

Water-water cap

The water-water system uses groundwater. Even during harsh winters, their temperature is between 8° C and 12° C, which is very sufficient to supply a heat pump to heat a house. Highly efficient, the COP reaches a level of 5 in annual average.

Ground-water cap

The ground-water system (geothermal) consists of a network of tubes that draws the calories from the soil and transfers them via the heat pump to one or more heated floors. Requiring a geological study of the ground, two techniques of capture (horizontal or vertical) are currently developed for the heating of individual houses.

Ground-water heat pump with horizontal capture

Horizontal capture

Horizontal capture consists of burying the tubes in trenches 80 cm deep. This principle requires land areas of at least one and a half times that of the house to be heated. On the catchment area, it is forbidden to plant trees or plants with deep rooting.

1 - Compressor
2 - Generator (condenser)
3 - Hydraulic circuit = heated floor
4 - Regulator
5 - Refrigeration circuit
6 - Evaporator = Sensor
CU: Useful heat for housing
CP: Heat taken from the ground

Vertical capture heat pump

Capture with vertical probes

The capture with vertical probes involves the drilling of one or two wells where are introduced one or more tubes of capture, to a maximum depth of 150m. Excellent yields are obtained because, from a depth of 15 m, the soil has a constant temperature whatever the season. The PAC can work with a COP of 4, and more. The footprint is limited. The main disadvantage is the cost of drilling varies depending on the depth, the nature of the land, the need to tuber the earth too friable...

Ground-ground heat pump

Ground-to-ground heat pump

  • Direct-expansion ground-ground geothermal energy involves sensor networks and heating floors made of copper tube, where a refrigerant circulates.
  • A compressor and an expansion valve integrated into an electrical cabinet ensure the transformations of the fluid. Expensive and delicate to install, this system offers in return an optimum yield for a minimum catchment area.

"Natéa" by Sofath

1 - Compressor
2 - Condenser = heated floor
3 - Refrigerant circuit
4 - Regulator
5 - Refrigeration circuit
6 - Evaporator = Sensor
CU: Useful heat for housing
CP: Heat taken from the ground


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