Condensing boiler: how much you can save, when are convenient, integrated system boiler and solar thermal

You have heard so much about the condensing boiler, but none have been clear in saying what is the actual savings that can guarantee?

In fact, there is a reason. The amount of fuel that is consumed not only depend on the type of boiler, but of course also by the square footage of your home, the insulation of the roof and walls, the thermal transmittance of your doors and windows, as far as heating the home in winter and from your average use of thermal water health.

That said there is some good news. The condensing boiler, on equal terms, it saves on fossil fuel that is used to heat. It does this thanks to its latent heat recovery system that allows you to use the heat trapped in the flue gas of combustion, which is impossible in the old boilers.

The condensing boiler is constructed so as to generate a yield of combustion greater than 100% (not 100% of the combustion, which would not be physically possible, but arrives at this level with the recovery of latent heat), a difference of 90% produced by most modern boiler traditional existing in commerce, with savings of fuel for the production of the same amount of heat and consequent decrease in the cost of heating.

When is it

The reduction of the losses of the heat produced by the combustion of the condensing boiler a good ally for energy saving, ensuring a percentage of savings that stands at 15% (compared to the traditional) when it is connected to a traditional heating system, such as classic radiators, and 30% or more (depending on the insulation of the house) but if it takes advantage of heating systems floor, wall, ceiling, or at least at low temperature.

If you want to evaluate the profitability of the investment will be useful to take into account that a condensing boiler has a minimum duration of 15 years and cost approximately € 4,000, € 1,000 more than the traditional one: in this way you can do your ratings . I remind you, however, that a boiler of this type is always convenient on a new house.

In the case of a boiler house spending is around 16,000 Euros, thus requiring an outlay of € 4,000 in the more traditional. Again, depending on the heating system of the building, you can return the accounts of the expenditure.

An aspect not forget about the tax deduction: it is possible to take advantage of the tax deduction of 55% during the tax return if you replace your old boiler with a condensing by 31 December 2012.

Boiler and solar thermal

To optimize even more the energy produced by the boiler, you can match it to solar thermal, which I remind you, is not, as is sometimes mistakenly believed, a replacement of the boiler, but rather a complementary system that reduces the amount of fossil fuel needed water heating thermal health.

The reason is intuitive: in the solar panels (or solar collectors) flows a heat transfer fluid, which heats up when exposed to the sun. Its temperature is measured by an electronic control unit that simultaneously measures the temperature of the fluid and that of the water contained within an insulated tank. When the fluid coming from the panels is at a higher temperature than the water used to use thermal health activates a circulation pump which leads to a heat exchanger inside the tank. Here is the exchange of heat and water use heated thermal health is ready to be sent to the radiator or to the taps.

When this exchange can not take place due to insufficient solar radiation, will speak at the condensing boiler, that will bring the water up to temperature.

For this reason the integrated condensing boiler with a solar thermal system can then increase the fuel savings of 10-20%.

 

10/07/2012

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Translated via software

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Source:

Italian version of ReteIngegneri.it