reasons for proper heat insulation development of energy saving standards in germany ways to...
TRANSCRIPT
Reasons for proper heat insulation
Development of energy saving standards in Germany
Ways to achieve these goals
A look into the future
Earth heats up in a speed never seen before
Natural resources come to an end and therefore need to be conserved
Carbondioxide accumulates in the atmosphere faster than it can be recycled by nature
Buildings after 1977 standards
Buildings after 1995 standards
Low energie houses
Passive house
Ventilation Low requirements
Window ventilation
Mechanic exhaust air ventilation
Ventilation with heat recycling
Solar and internal heat savings
Low efficiency
Little efficiencvy
Effective, not yet sufficient
Very efficient
Heating High Middle Low, little adjustable
Not necessary
Maximum yearly thermal heat usage
280 to 180 kWh/m²a
100 to 54 kWh/m²a
70 to 50 kWh/m²a
< 15 kWh/m²a
Oil needed per year
18 to 13 l/m²a
9 l/m²a 5 to 4 l/m²a -
Governmental sponsorship of renovating old buildings with new standards
Governmental sponsorship when building passive houses
Energy saving requirements that have to be fulfilled by newly-built houses
Develop better materials for insulation and airtightness
Build in new window types with gas filling for better insulation of windows
Prevention of constructional thermal bridges
More efficient use of regenerative energies:- solar energy- wind energy- geothermal energy- hydro power
Set even higher standards for newly-built houses