Solar – Advice

  • Useful information about solar thermal systems

    Benefits of solar heat at a glance

    • Solar energy is available in unlimited amounts, free of charge
    • Solar energy is environmentally responsible – unlike fossil fuels
    • The expansion of solar thermal systems is being subsidised by public funds
    • Solar thermal systems increase property values
    • Solar thermal systems mean greater independence from energy prices
       

    Domestic hot water coverage with solar energy

    In German latitudes, solar energy can be used to cover 70 % of a household's annual domestic hot water demand. In the summer months, the entire domestic hot water demand can be covered by the solar thermal system alone. In conjunction with a heat pump, the domestic hot water demand can be covered in winter too.

    How a flat-plate collector works

    All solar thermal systems require a solar collector that converts the light that strikes it (global radiation) into heat. Flat-plate collectors comprise a transparent cover, an absorber, a collector tray and thermal insulation. The absorber is simply a copper panel, which absorbs the light, converts it into heat and transfers the heat to the heat transfer medium. The medium flows through pipework located behind the panel. It is carried from the collector to the cylinder, passes through the large indirect coil inside the cylinder and transfers the heat to the water in the cylinder.

    Solar collectors

    Solar collectors from STIEBEL ELTRON are characterised by high absorption of radiation, low radiation heat losses and a long service life. As a result, the sum of all the technical components enables these collectors to achieve an extremely high efficiency, i.e. in excess of 80 %. These solar collectors are made from ecologically sound materials and represent the highest production quality.   

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    Solar thermal control systems

    The solar control unit is the central controller of any solar thermal system. It constantly safeguards the perfect interaction between the individual constituents of a solar thermal system. The well laid-out and attractive designed control units are easy to operate, putting you in control. 

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    Solar compact installations

    The solar compact installation set facilitates a straightforward installation of a solar thermal system and provides an optimum link-up between the collector array and the cylinder. Solar compact installations include all components essential to the hydraulic circuit. The solar compact installations of the SOKI series stand out on account of their compact design and easy handling.  

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    Solar domestic hot water cylinder

    Just like the collector, a well insulated cylinder is an essential part of a solar thermal system. STIEBEL ELTRON offers high grade domestic hot water cylinders that can be utilised for domestic hot water heating or for central heating backup. Like conventional heating systems, advanced heat generators such as heat pumps can be combined with most cylinder types. 

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    Solar sets

    The solar sets are made up, by way of examples, of solar thermal systems that comply with various requirements. These assemblies are based on average values. For that reason, an individual matching of the solar thermal system to your home's specific conditions and an adaptation of the sets will be required. We would be happy to advise you accordingly.