Interior
Villa Viva has a large number of different products - furniture, curtains, bed linen, tables, chairs and much more. We analysed as many as possible in terms of material composition, harmful substances, recycled content and supply chain. Due to the large number of products and the complexity of their composition, we were supported by the agency Elbstrand & Mannschaft GmbH. Our aim was to purchase products with a high recycled content and a low proportion of harmful substances that were produced in Germany and the surrounding area.
Ventilation
When it comes to ventilation, we have opted for energy-saving systems and do as little as possible and as much as necessary. Openable windows contribute to efficient summer ventilation and thus to a reduced cooling requirement and a high level of indoor user comfort. The guest house is also supplied by a central ventilation system with heat recovery and variable volume flow control, which automatically regulates the air volume up and down depending on occupancy and use, e.g. when showering.
Energy efficiency
Passive building measures are the first step towards an energy-efficient building. Very good thermal insulation, windows with triple thermal insulation glazing and the façade design with vertical slats made of recycled aluminium, which provide adequate solar shading, reduce the overall heating and cooling requirements and at the same time lead to very good thermal comfort for the users all year round.
Heating
The heating is realised as surface heating via the activated concrete ceilings. This means that hot or cold water flows through hoses laid in the ceiling and heats or cools the room below. This is a very energy-saving heating option due to the low flow temperatures of the water fed in.
A large part of the hot water requirement is generated when using the guest house floors. For this purpose, we have supplemented the district heating with solar thermal panels on the roof, which heat the service water in a 10,000 litre buffer tank and thus cover an estimated 20 % of the total heat requirement. The aforementioned measures will enable us to build Villa Viva to the KFW - 55 efficiency house standard.
Water & microclimate
An important design feature with a positive effect on the urban climate is the green façade, which extends from the ground floor to the third floor. There is also intensive planting on the roof terrace. Irrigation is carried out using drip irrigation with collected rainwater and thus makes a positive contribution to the microclimate through evaporative cooling. A novelty in the Villa Viva is in any case the extinguishing water storage tank required for a high-rise building, which is also fed with rainwater here!
