On this and
other pages, we summarize the results of a research project on the
energy-efficient renovation of an old building in a structured way.
The professional approach to the renovation and partial redesign of all building parts and fixtures described in the entrance graphic is explained in words and pictures as well as in 17 short videos.
In the introduction, two further videos illustrate the ecological and economic urgency of energy-efficient building refurbishment and the goal of the project.
Humans have freed themselves from the arbitrarily felt natural influences of cold, wetness, and wind through their living culture.
In heated, lighted and ventilated rooms, they protect themselves from the imponderables of nature. Increasingly greater demands on the functions of living, sleeping of sanitary facilities, and leisure time lead to greater consumption of valuable natural substances and energy.
Movement and heat are forms of energy that we experience. Physical knowledge has given us a wealth of information about energy.
Innovative action has led to a variety of applications of energy in industry, transport and living.
Planners, entrepreneurs, and scientists have been planning and implementing a demonstration and research project for several years. A 60-year-old building was available for this project. It met all the requirements for a comprehensive renovation: high energy consumption and an unhealthy indoor climate due to the formation of mold and spores.
The aim of the project was to reduce the primary energy requirement to a tenth and to achieve a healthy indoor climate through ecological building. The energy savings were achieved through the comprehensive renovation of the building structure, through thermal insulation measures, the use of condensing boiler technology, solar energy, and ventilation technology. The building renovation described below can serve as an example for the majority of the necessary building refurbishments.
The renovation of the building envelope involves various work steps.
These include the removal of cracks in the exterior wall, the cleaning and restoration of the natural stone masonry, the sealing of the foundations, and the renewal of the roof, rainwater drainage and windows.
An office and a control room will be set up in the basement. This places particularly high demands on the refurbishment measures.
The interior plaster and the floor slabs have to be removed due to the poor building structure.
The interior fittings of the basement will be carried out in lightweight construction. The ground floor and attic will be renovated and thermally insulated.
The tightness of the building is checked using the Blower-Door method.
Leaks can lead to energy loss and structural damage and can be repaired before the interior work is carried out if necessary.
Today, a good energy balance can only be achieved by ventilation systems with heat recovery.
The outer shell of the building and the outdoor facilities are completed.
The rooms in the basement meet the climatic requirements for an office and the control room.
The first floor has been redesigned and offers the prerequisites for a good living atmosphere.
By extending the attic floor, an attractive apartment on two floors was created.
The renovated building meets the requirements of a low-energy house in terms of thermal insulation and energy supply system.
The main technical measures implemented during the renovation of the building are summarized here on film.... MORE