Most renewable energy sources has an average energy balance (average cycle 1 year) very low or even close to zero .

All of renewable energy sources such as wind , sun heat, etc. are temporary and need to use them , is generally at a much later time than the present “overproduction” .

This means that , that the use of any surplus energy (heating , solar , renewable) , requires its storage for a long period of time .

Take, for example, into account the closed system of solar collector .

In the event that does not occur in the heat energy storage insulated hot water storage tank , what we have gained in a hot and sunny day , We would give back to the atmosphere at night .

Despite the temporary production kilowatts or megawatts of power by the receiver or heat exchanger , average energy recovered from organic sources tends to zero .

The easiest and cheapest is to store thermal energy , because it does not require any special processing technology to a different kind of energy .

It can be used for heating water (eg . wash), and to heat your home throughout the year .

The first step is to ensure that you can use electricity for current needs and then store the excess , since storage is always associated with energy losses.

Depending on the length of storage time and the quantity of energy is required for different volume “energy storage” .

It depends , also the approximate amount of energy needed to heat .

Please note the cost-effectiveness of thermal energy storage projects, taking into account the percentage of free energy , relative to the total energy for heating. The real value is between 70-80% .

For the production of hot water it is necessary to heat to a temperature above 45°C and storage directly in the hot water buffer.

Storing large amounts of hot water for more than 2 – 3 days is not cost-effective due to large losses resulting from high temperature .

It seems more sensible long-term storage of energy with lower temperatures (losses are proportional to the temperature difference between the reservoir and the immediate environment .

However, this requires a large volume of ” tray ” energy and high heat transfer coefficient .

To obtain the most of the heat energy for this purpose solar system, which have a relatively high efficiency .

Recovery time is also much lower , than other devices using renewable energy sources as heat pumps .

Reception of energy is also very simple , by flowing the liquid through the solar collector and putting it in the tray , and energy storage through a heat exchanger .

If you want to store heat throughout the year the amount of solar energy receivers (heat) is a relief , Having regard to the year-round demand and estimated losses .

The most optimal to combine solar panels with independent segments and their individual control , especially when they are put in different geographical directions .

Heating is the most sensible farms or homes on large plots , where we have lots of space , both the deployment of solar collectors and heat storage systems .

There are energy reservoirs (gels tanks) , that can store several times more heat energy , than the water tank of the same volume .

These solutions, however, are very expensive and at the stage of thermal energy storage, along with building a house from scratch, can be much easier and cheaper to implement such a magazine.

In addition, it will allow us to accumulate heat throughout the spring , summer , autumn and putting it through the winter .

The storage facility is best done during the construction of the building without basement the foundation stage .

Given that the foundations of a foundation system for a depth of about 1.5 meters at our latitudes , between the foundation for the planned building floor space is obtained with a volume similar to the installation surface of the building * (1 to 1m3) .

Best to do it with clay soil , which dominates in Poland and has a good heat transfer.

To do this, the occasion of the foundation work should be removed , around the contour of the ground to the depth of the building foundation. Foundations and foundation walls are made standard , warming them only from the outside .

The whole of the bottom of the isolates against – dehydration foil insulation .

The bottom of the resulting thermally isolate and LECA Styrofoam (polystyrene foil to protect against puncture by LECA . LECA can be replaced by other insulating materials , to withstand the earth pressure of 1-1.3m. Thermal insulation is placed on the back and a thin layer of polystyrene insulation foil.

At the bottom of the resulting thin layer of clay we put and aligns it compactor .

Then spread the heat exchanger (tube and water underfloor heating) , which will provide a heat exchanger and transmit solar energy from the energy storage.

Then, very carefully throw tons coil 20cm layer of soil and thicken it.

After this point, it is good to perform a leak test coil and compressor with pressure gauge.

The entire space between the benches compacted clay foundation fill it every 20-30cm .

For security, you can put more than one coil to allow switching to a second heat exchanger in case of failure of the first.

The upper part of the magazine of energy must be insulated by polystyrene film . To the plane of the floor screed planned.

The floor for safety, in addition to not burst arm unsupported native land.

The use of another coil in the floor allow for more optimal use of solar energy for low-temperature winter home heating purposes .

The stock so constructed heat energy is given up by load-bearing walls of the building, by considerably reducing the home cools down and warms the wall itself by building extra few months of the year .

Good insulation on the underside of energy storage outside of the building has a direct effect on the efficiency of such a solution and reheating time of the building of the free energy of the sun.

Since the volume of this stock is limited , to increase free time building heating , You can, at most, increase the active surface area of ​​solar collectors and energy storage to a higher temperature.

In this case, however the building will be reheated at times when you do not need (in the summer) .

The use of such heat storage with multi-power – Energy segment – requires the use of solar panels Automation in the form of heating or dedicated RoomManager Controllers for solar collectors allows for maximum efficiency .

Knowing that, every square meter of collector “salty” costs , achieve efficiency 50% instead of 100 % is equivalent to the doubling of the solar surface.

It will also take into account the busy area of ​​the solar panels on the property that did not occupy a large area of ​​land at the assembly ground .

When installed on the roof , the roof area was sufficient . The efficiency and performance of the system is particularly important in the case of transitional periods (mostly autumn) optimal control of the heating system allows the storage of a large supply of energy before winter . During the winter, a small sub-optimal control performance and may even generate energy losses so it is worth fighting for .

During the winter to increase the efficiency of solar heating (solar farms) it is best to power the underfloor heating through a heat exchanger , allowing for the use of such low-temperature energy source directly on minimum loss .

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