Avoid heat leaks E.g. shutters not in walls build: sit on it. Building as airtight building. Modern heating, automatically regulated. Efficiently heat the domestic hot water using solar heat. use. > automatically lifts, heat consumed recycle indoor air.
, heat consumed room air recycle. > power save with smart pumps and household appliances, energy-saving lamps. e.g. smart pumps and appliances, saving lamps. with > energy-saving technology at the home also and operate properly.
and the living also properly serve. > as my savings potential is great? When translated, how much heating (kWh) per square meter (m2) and year (a) is necessary, you can compare. Unit: kWh/m2a. The graph of: old buildings spend 270 kWh/m = a. That doesn’t mean to you? 10 kWh correspond to 1 litre oil or 1 cubic meter gas or 2 kilograms of wood pellets. So, unsanierte old buildings are usually 27-LiterSchluckspechte. The heat Protection Ordinance 1982 lowered that to 220 kWh / m’a, WSVO in 1994 to 120, the energy saving regulation EnEV on 95. low-energy houses are about one-third including at 70; Passive houses at 15 kWh/m2a.You can reduce AuchAltbauten on passive house level down. I do without heating? Spar pioneers have built already zero-energy homes. Even plus energy houses a settlement is in Freiburg (photos below). … and the House grows in the value high-performance houses like this and passive houses are extremely well insulated. The sticking points: heat losses due to ventilation, energy consumption for water heating. How much should I aerate? Every two hours the air should be replaced completely. Ventilation systems do it in just right amount. You take off 80% of the heat load of the exhausted air and thus tempering the fresh air. How much hot water? The hot water allowance is determined according to the number of residents, their bath and shower habits, not according to the standard of the building. The building needs less energy for heating, the energy requirement for the amount of hot water is always stronger in the weight (right chart). Because only one thing helps: tap into the Sun with collectors, heat hoard low-loss. How is My House super? Zero energy houses require no additional heating energy, they cover the residual heat by heat generated in the House – of people, devices, solar radiation. Ventilation system with heat recycling and mandatory for collectors. At plus energy buildings the energy balance is positive by renewable energy, mostly solar power at the end. For example, a passive house with 120 m2 Wohnfache has a heating energy requirement of 1800 kWh / m’a (120 x 15). A square monocrystalline solar cells produces annually 100 kWh. 18 m ‘ compensate for solar cells so the heat requirement. Furs water warming according to EnEV come more 15 m ‘ solar cells, um in the plus to land. Collector heat can compensate. What does it cost? In 1991, Dr. Wolfgang Feist built the first passive house in Darmstadt-Kranichstein. It cost 20% more than a Normalhaus, works just fine.