Lexikon - Solar warmth profits (QS)
They are gains of warmth of a building through sun rays on walls and roofs and transparent components (windows). They are dependent on the sky direction and the inclimation of the exposed areal as well as on the parent insulation which has both advantages - utmost solar warmth gains at minimal transmission warmth loss. Using TWD-systems attention must be paid on insulation in summertime to prevent the building from overheating.
- Solar collectors
They consist of absorbers which deliver the son warmth to a warmth carrier medium (e.g. water-glycol-mix) and make sun rays usable for heat warmth and heating water.
- Dew and condensation water
In heating, the relative humidity falls if the absolute humidity stays equal. In cooling, the relative humidity rises until it cannot hold the containing water steam and dew forms in constructioning, such processes can occur inside of components or on surfaces and evoke damage. In wood frame building this is prevented by the use of steam brakes.
- Technical life span
It is the period of time from the construction of a building to the point of time, when the building does not correspond to the actual requirements in utilization, building physics or statics
- Transmission warmth loss (HT)
It is warmth loss of the building shell, all outer components. Here, the U-value of the component and the A/V proportion is important Next to ventilation warmth loss; this is the biggest part of warmth loss of a building. In the "EnEv" transmission warmth losses are regulated to not let the construction warmth protection sink under the standards of those of the WSchVO 1995.
