immo!nvest – Die Plattform für Standorte und Immobilien

Tag: Energieeffizienz

  • Houzy launches energy calculator

    Houzy launches energy calculator

    Houzy now also offers an energy calculator on its platform as a further aid for property owners. According to a press release , this can be used to determine the energy efficiency of a building. In this way, Houzy promotes sustainable renovation measures as well as transparency for property owners and prospective buyers.

    In addition, the energy calculator simulates the influence of energetic measures on energy consumption, heating costs and CO2 emissions. He takes into account the investment costs and calculates both the funding and the long-term savings potential. In four steps you can find out how facade insulation, insulated windows or a heat pump influence energy efficiency.

  • Complete renovation of the Olten Cantonal School

    Complete renovation of the Olten Cantonal School

    Work at the canton school in Olten has been going on for five years. Around 1000 pupils are taught at the school, which was completed in 1973 by the architects Marc Funk and Hans-Ulrich Fuhrimann. Construction work is ongoing in parallel. The architectural office Batimo AG Architekten SIA from Olten, which specializes in renovation strategies and has already renovated numerous school buildings, was commissioned.

    "In order not to impair school operations too much, we have postponed the most noisy work to the school holidays according to specifications and in consultation with the school management," explains Dario Pagliari – he is responsible for construction management on the part of Batimo AG. The overall renovation includes a complete renovation of the building services and the facade, slight floor plan adjustments, the elimination of technical defects and an adjustment to the current standard in terms of fire protection, earthquake safety and energy efficiency.

    Great attention is then also paid to improved energy efficiency: the modified building envelope, an optimized, natural ventilation concept as well as a geothermal heat pump system and the installation of a solar system reduce the energy consumption of the buildings by around 67 percent. The annual CO2 emissions are reduced by 732 tons, which translates into annual energy cost savings of around 200,000 francs.

    The work was divided into different stages: "Right at the beginning we replaced the windows and carried out the insulation work both inside and on the flat roofs," explains Pagliari. The work on the indoor swimming pool, the cafeteria, the auditorium as well as the workrooms and gyms have already been completed. The premises are currently being adapted to the changing needs of school operations, as the site manager explains. A floor can be renovated in a three-month stage. The pupils of the corresponding classes are meanwhile being taught in the specially built temporary school facility with eight classrooms. There are a total of two school wings with ten and five floors each.

    The last stage will include work on the surrounding area as well as the renovation of the sports fields and underground car park. Once all the work has been completed, the Olten Cantonal School should be fit for another 40 years of operation at its special location in the elevated forest area not far from the train station.

  • Swiss Life Arena produces ice in a CO2-neutral way

    Swiss Life Arena produces ice in a CO2-neutral way

    The Swiss Life Arena should be “a showpiece in terms of energy efficiency”, writes the electricity company of the city of Zurich ( ewz ) in a press release . It created the energy concept for the ice rink in Zurich Altstetten. “We have incorporated our many years of experience in the planning, implementation and technical operation of arenas such as the Hallenstadion in Zurich, the Swisspor Arena in Lucerne or the Vaudoise Arena in Lausanne,” says Christoph Deiss, Head of Energy Solutions at ewz Communication cited.

    The heart of the concept is the arena’s energy center, which produces the cold for the ice surface and the energy for the indoor climate. The waste heat produced by the four refrigeration machines is used on the one hand to heat the rooms. On the other hand, the arena is to be connected to the Altstetten and Höngg energy network. In this way, the waste heat from the refrigeration machines will contribute to the heat supply of households connected to the energy network in the future. “We decided on an energy concept from ewz that guarantees ecological sustainability,” said Peter Zahner, CEO of the ZSC Lions , in the message. “We were particularly impressed by the innovative approach to utilize synergies – not least from an economic point of view.”

    In order for the Swiss Life Arena to meet the Minergie standard for ice arenas, a photovoltaic system with an output of 400 kilowatts peak will also be installed on the roof of the stadium. Heating and cooling as well as the electricity additionally supplied by ewz are produced “100 percent CO2-free”, writes ewz. A building automation system should control the systems in a demand-oriented and energy-efficient manner.

  • Suurstoffi: Area development with a model character

    Suurstoffi: Area development with a model character

    «The Suurstoffi offers everything we need for our work. We can no longer be taken away so quickly here, ”says Sanofi Aventis CEO Andrea Meyer. A nice compliment for Zug Estates, which in the last ten years has developed a district in Rotkreuz that impresses with its architecture, greenery and energy efficiency. The once unattractive area has been revitalized. "The Rotkreuz community has an excellent macro location and is easily accessible by public transport," says Martin Jöri, Head of Strategic Site Management at Zug Estates. “The area is right next to the train station, but can also be easily reached by motorized private transport. The quarter is a kind of village within the village, and the campus concept is omnipresent. "

    A healthy mix
    All in all, Jöri appreciates the mix of living, business, research, school and gastronomy. He also likes the typical district infrastructure with a hairdresser or doctor. According to the latest construction status, the area is practically completed: “A construction site with two office buildings (Suurstoffi p. 18/19) has not yet been developed – but the building permit is available. The construction will be triggered in accordance with demand if sufficient occupancy has been achieved beforehand. " Looking back, Jöri regards the high construction speed with the aim of on-time commissioning as the greatest hurdle that had to be overcome.

    “Zero-Zero” goal
    The Suurstoffi is breaking new ground with an exemplary energy concept. On the site, solar use, several dynamic underground storage facilities and an anergy network form the basis for achieving the “zero-zero” goal. That means: the around 165,000 square meter Suurstoffi area is CO2-neutral. The energy for heating and cooling is generated by underground storage and building waste heat, electricity is provided by various solar power systems. The aim is complete self-sufficiency with primary energy for heating and water treatment. It was precisely this ambitious energy concept that particularly appealed to Jöri about the building: “It is a future-oriented vision of a CO2-free quarter with as much energy as possible, which is provided from our own production. But the architecture is also great. There is no uniformity here. Each construction site has a varied design. We also attached great importance to a green and high-quality outdoor space. "