Lexikon - 3-liters house
These low energy houses have a yearly primary energy demand of less than 35 kWh/ (m²a).This corresponds to the consumption of approx. 3Liters of heating oil per square meter utile area a year. ''3-liters houses'' underbid therewith the limits set by the ''EnEV'' and contribute therewith persistently to the resource protection and to the climate protection.
- A/V in proportion to (A/VE)
It is the indicator for the compactness of a building. It is a basis for the energy and economic review and the calculation of warmth protection. It describes the proportion of the transmission outside area (A) to the heated volume (Ve). The smaller the proportion is, the slighter the losses caused by transmission are. The geometrically compact body's ball and cube have therefore the slightest warmth loss However, in the practice, it turned out that a lying rectangular solid can gain the larger possible solar warmth profits. That is why it is energetically the most favorable design.
- Acoustic decoupling
Can be reached through the separation of components or single layers of a layered of a layered component. It restricts strongly the transmission of sound, e.g. steps. Cement floor, e.g., is comprehensively covered with insulation in order not to touch the walls at any place and therewith not to transmit the sound wave.
- Structural wood protection
Modern wood protection has overcome chemical wood protection to a few exceptions and refers directly to the traditional wood protection. The use of unhealthy Biocides (against parasites) is avoided through constructive solutions. This can be achieved for example through certain connections and arrangements of components. Special ventilation or protection layers like steam brake and under layers. Parasites are not are not exterminated by these means, but rather their necessary habits is not available anymore, namely moisture.
- Block method of building
Flat full wood walls built out of dark, partly hewed stems or in a modern manner machine profiled wood plank, stacked horizontally one above the other and connected together in simple groove-and-feather construction. The vertical load is transferred through the wall elements to the ground. In this construction type the load presses the wood fibers which are starched but still are very resistant to this kind of tension. In block method of building, one must take into consideration the preparation costs and comparatively high production costs.
