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High comfort factor thanks to individual room regulation

Green buildings do not just result from stringing together a series of highly efficient products and only using sustainable building materials but rather by intelligently combining innovative structures made from recyclable materials and multi-functional building technology. One of the most up-to-date examples in the green building range is the new Süddeutscher Verlag HQ in Munich, which has been recently awarded with a LEED certificate in gold as first office building in Germany. In conjunction with a multi-functional automation of the room functions, the innovative facade fulfills the requirements for minimization of the building's energy consumption. A novelty: employees can choose freely between manual and automated operation of heating, ventilation and cooling.

Along with a three-layer facade, the heart of the building and energy concept designed specifically with sustainability in mind is a geo-thermal heat pump that accesses the energetic storage potential of the earth via 36 thermally active pile foundations for heating and cooling purposes. This is complemented by the option of being able to use the building's storage capacity for night-cooling processes. Heat is primarily sourced from internal heat loads, solar radiation and individual window ventilation and is used for room temperature control by concrete core activation.

Behind the scenes, a total of 1,730 Desigo ACX LON individual room regulators from Siemens work via an individual, physically separate TCP / IP data network with the higher level Desigo BACnet building automation system. A total of 22 Desigo PX automation stations are installed for the connection of the two climate control units, "north" and "south", as well as the "heating", "air-conditioning, "sanitation / sprinkler" and "underground parking exhaust air" control units. The high synergy effects between climate-friendly construction, decentralized, demand-driven room functions and multi-functional regulation strategies were one reason why the general planners, CBP Consulting Engineers, Munich, suggested that the principal apply for the gold level LEED building certification. At the certification a few days ago the building reached 42 points; to achieve a gold status, 39 points are necessary.

A total of approx. 3,000 intelligent fire detectors and 120 aspirating smoke detectors in the double floors and suspended ceilings provide early and safe detection of smoke and fire. An additional 350 push-button fire alarms that alarm the fire department immediately when activated by an employee and approx. 800 control contacts for the implementation of the specified fire protection concept with the assembly sections involved. Whilst the approx. 2,700 loudspeakers on the corridor walls of the offices primarily inform employees in the offices of evacuation procedures and strategies at a minimum volume of 75 Decibel, special loudspeakers are installed in the foyer that can also be used as an auditorium.

A suspended ceiling was developed that seamlessly integrates an acoustic function in which lighting, presence detectors and sprinklers are seamlessly integrated. The project-specific lighting is distinguished by a non-glare feature achieved using Eldacon micro-prism technology in the cover. This means that desks can be flexibly positioned in a room without creating shadows or glare. A corresponding dimmer function allows predominant use of daylight, thus saving energy.

The high energy efficiency of the lighting concept - a total of 3,000 such lights are installed - is provided primarily by the Quicktronic Dali Dim (QTi Dali) electronic control gear from Osram that also enables flexible allocation of a lighting group to a switching element.

The great flexibility of modern systems and the advantages of multi-functionality of lighting and security technology is also demonstrated by the media technology. One example is the conference area on the first floor that within a few minutes can be split up into four smaller rooms each with complete AV technology using four mobile dividing walls.

The low-voltage "Sivacon S8" switching system has an equally modular and space-saving assembly as the electricity power rail. The low-voltage main distribution system that comprises a total of 34 switchboards, an important component of the Siemens "Totally Integrated Power" concept, supports the system concept that ranges from the Power Management System to the low-voltage main distribution system to the power outlet.



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