Vacuum Super Isolated Solar Storage Tank

An efficient long-term heat storage as the Vacuum Super Isolated Solar Storage Tank (VSI storage) increases the profit
margins of solar thermal systems in buildings. It can store the heat for several weeks or even months. Thus high solar
profit margins for small and medium-sized existing buildings can be achieved. This type of storage tank is available
with a capacity of 5 to 50 cubic meters.

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principle VSI Storage The VSI solar memory consists of
an inner and outer tank made ​​of steel.

A vacuum between the inner and outer tank reduces
the thermal conductivity of the tank cover. In
addition to the insulation of the tank cover the
thermal layering also influences the efficiency.
The integrated layer loader with optimized key
mechanism prevents the mixing of hot and cold
water. The laying loader, which is made of
plastic has low thermal conductivity and is
temperature resistant up to 110 °C.

* Perlite is a naturally occurring material of volcanic origin with low density and high porosity. Therefore it has good insulating properties, even without evacuation. Another advantage is the temperature resistance up to 800 °C. The material is non-poisonous and non-flamable.

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References

Project Bergen a. Chiemsee

Storage tank 11 m3 outside of the building and partially buried;
2 m3 in the house installed,

Data house:
year of building: 1990
living area: 230 m2
persons: 6
energy amount: 35000 kWh p.A.

Data Solar system:
collector area: 55 m2
tank volume: 11 m3
tank volume: 2 m3
calculated annular yield: 22000 kWh

The rest of the required heat is covered
by wood and oil. Approx. 8 stere wood; no consumption of oil in the
last 3 years; Thus 12.000 l of oil economized.

Solar Storage TankSolar Storage Tank
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Project Herzogsdorf Austria

Data house:
year of building: 2013
storage tank: inside of the house
tank volume: 25.000 Liter
solar coverage: 80 %

Solar Storage TankSolar Storage Tank
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Project Dachau

Data house:
year of building: 2012/13
building type: single-family-house

Data solar system:
collector area: 55 m2
tank volume: 15.000 Liter

The storage tank is inside of the house installed.
Additional heated with gas and tiled stove.

Solar Storage TankSolar Storage Tank
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Solar Storage Tank - Graphic Thermal conductivity

Solar Storage Tank

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