Residential complexes as an essential component of the energy transition

Viessmann: solution provider for energy generation in residential complexes

Viessmann is your reliable partner for highly efficient solutions for residential complexes: from the concept phase and detailed planning right through to implementation, everything from a single source. Energy supply and service contracts round off the business model and ensure long-term customer loyalty in the core business.

As a comprehensive supplier of energy systems, Viessmann offers all the necessary components for a networked system. The company supplies suitable system solutions and it designs and implements the systems, including all raw material and operations management. This also includes studies to examine the feasibility of concepts and their economic viability, as well as to procure funding for the expansion of heating networks.

Reference projects for solutions for residential complexes

Stuttgart Rosenstein in Stuttgart has an impressive forward-looking heating and cooling concept based on innovative technology. To implement it, the client and energy planners opted for system components from Viessmann. Their perfect interaction makes it possible for the required heating energy and some of the electrical energy to be obtained directly from within the residential complex itself.

The heart of the heating centre is a CHP unit that uses the principle of cogeneration to simultaneously generate heat and power. The heat generated in this way is used for space heating and domestic hot water heating. Mechanical energy is converted directly into electricity and used to drive the heat pump, among other things.

An ice energy store serves as a thermal store

The ice store consists of a tank with built-in heat exchangers that is buried in the ground outdoors and filled with ordinary tap water. Special solar air absorbers are installed on the roof of the house. These draw heat from the ambient air and from solar radiation and feed it to the storage unit. The ice store also draws energy directly from the ground. The heat pump extracts the energy required for central heating and DHW heating from the water stored in the tank as needed. If the temperature in the tank falls to freezing point, more energy is obtained from the water freezing –– hence the term "ice store". At the end of the heating season, ice is selectively formed which is then available as a cooling source for keeping the building cool on hot days. The change of physical state in regeneration mode can be repeated as often as required: the technology is virtually maintenance free. The energy technology package is used as a contracting model.