ratiotherm Heizung und Solartechnik Gmbh & Co. 

• OSKAR° has a unique layer system - the supply and release of energy takes place at different heights in stratified layers.
• OSKAR° works without any wear and tear and at no cost - it operates naturally  and with absolutely no control technology
• OSKAR° utilises every level of energy; for example, even the return heat from heating circuits.
• OSKAR° also stores passive energy: All connections that penetrate the insulation are situated in the cold area at the bottom.
• OSKAR° works with any system and can therefore be connected to any central heating system.
• OSKAR° is ideal for retrofitting systems using standard connections & can be delivered in parts that are welded together on site.
• OSKAR°: tested and rated as "excellent", for example, by the University of Applid Sciences Munich (FH) or the ITW in Stuttgart (Download ITW Test).

Optimal charging and discharging
The "right" storage of heat energy leads to the maximum utilisation of storage capacity. When withdrawing water, OSKAR° takes into account the different temperature levels in the heat consumers. This results in the heating system operating with the utmost efficiency.

Intelligent storage
Regardless of where the heat comes from and what temperature it is, OSKAR° will store it like a battery - like a "heat accumulator". The respective energy is thereby layered into the appropriate temperature zone according to its temperature. OSKAR° enables any heat generator to attain its ideal operating state; after all, it stores energy with practically no losses.

Logical distribution
As soon as energy is needed for heating or domestic hot water heating, OSKAR° supplies precisely the heat that is needed, from the respective temperature zone. Not more and not less, not hotter and not colder.

In comparison to conventional domestic hot water systems technology, OSKAR° stratified storage technology has the following advantages:

• The supply temperature is lower, as there is hardly any loss of heat.
• As there are no connections in the hot zone at the top of the storage tank, there are hardly an losses in heat.
• The condensing boiler technology has a much higher level of efficiency, as there are lower return temperatures and no circulation processes
• Less calcification and less maintenance for fresh water systems
• System's solar capability for both hot water and heating support
• Hygienic, healthy, domestic hot water
• Greater hot water output - adaptable to requirements

Quite simple: modelled on nature

1. Water is an excellent energy storer - hardly any other substance can store so much heat per kilogramme.

2. Water has different weights depending on its temperature - hot water rises; cold water sinks enabling stratification according to the principle of gravity.

3. Water is a bad conductor of heat - different layers of temperature are upheld for longer. OSKAR° utilises these natural laws to store hot water in any number of layers. With OSKAR° this stratification occurs without the use of external energy and without the support of electronic or mechanical expendable parts.

The different heat generators (solar, wood, etc.) largely vary in their output rating and thus also deliver very different temperatures. If they are not mixed but stored in layers, their energy content is fully preserved and can be used advantageously for heating or domestic hot water heating.

The charging and discharging process is elementary for the efficient and effective utilisation of OSKAR°. Water settles into layers in the appropriate temperature zone according to its temperature. The principle: 40 degree solar-heated water on a cloudy day is chanelled into the 40 degree layer without mixing with the 70 degree hot water from the sunny day the day before.

As soon as energy is needed for heating or domestic hot water heating, OSKAR° supplies precisely the heat that is needed, from the respective temperature zone. Excess return energy is reordered into the appropriate layers.