Lexikon - Ventilation plant
The variety of equipment of a mechanically operated ventilation plant reaches from a simple fan to the waste air ventilation up to highly complex heat systems with warmth pumps supporting warmth recovery, pollum filters and humidity-regulating additional devices the goal of all these is to provide a nice and healthy room climate and to minimize ventilation warmth losses. Furthermore, a ventilation plant ensures the sufficient ventilation of the building and prevents dangers from the necessary air tightness.
- Ventilation warmth loss
It is a loss from the ventilation of rooms. There may be great differences by the way of the ventilation. Opening the window constantly half-way may lead to a lower room temperature and of the components, and dew-opening up the window all the way once in a while leads to a quick change of air without out cooling components and room interior. Controlled ventilation by plants avoids such problems and can be connected with warmth recovery systems to minimize the ventilation warmth losses.
- New construction dampness
In the masonry construction several tons of water are bound in the components after the finish inside of the used mortar, concrete and cement floor. That is why one speaks in this context of "dry living" after the first or second year after the finishing this is connected with investing energy, and there are also risks because of the high standards for air tightness. For wood construction this problem does not exist in this form because components are dried in prefabrication and only little water comes through. In the wood house, from day one there is a nice and healthy climate.
- Low energy house
The term is not legally defined or protected. Experts, however, agree that these houses do not need more than 30 to 50 kWh of primary energy per m² utility room and year. This corresponds to a consumption of about 3 to 5 liters of oil per m² and year.
- Zero energy houses
These are energy self-sufficient buildings, which do not need fossil fuel. The demand for warm water and the rarely needed heat warmth demand are provided by solar hydrogen plants and sun collectors, Photovoltaic plants or wind power plants produce the entire household and utility current. Today zero energy houses are subject of research because the high investment costs make such a construction in our climatic zone not economical. But if is to assume that these technologies will adjust in price.
