Energy-plus-house
A Plus Energy House is a zero energy house resembling house with an annual energy balance is positive: it gains more energy than it receives from the outside ( for example in the form of electricity, gas, heating oil or wood fuel ). The energy required for heating and hot water is obtained even in or around the house, mostly by solar thermal systems and photovoltaic systems. Since there is no generally accepted definition or standard exists for the plus energy house, it remains unclear whether the demand for electricity for lighting, household electricity accounted for, etc., is thus compensate.
Not taken into account is still the primary energy requirement that is needed for production, transportation, storage, sale and disposal of building materials to build the house, the so-called gray energy.
Examples
Several hundred building projects worldwide since the early 1990s has been realized and its objective was to achieve a balanced or even positive energy or emission annual balance sheet. Many of these projects have been collected in the research program Towards Net Zero Energy Solar Buildings.
Germany
The Federal Ministry of Transport, Building and Urban Development ( BMVBS) took over in 2007 against the background of energy and climate policy objectives of the Federal Government under the patronage of the German contribution at the Solar Decathlon competition in Washington DC and supported it as part of the research initiative, future construction '. Developed by the Technical University of Darmstadt Plus Energy House won the competition in 2007; as well as the 2009 competition Asked house. The Ministry has set up its " energy-plus house of the covenant" mentioned exhibition pavilion with the technologies and the architecture of the 2007 building of the TU Darmstadt. This is a portable, fully functional, lightweight and produces more energy than it consumes.
2011 established the BMVBS a so-called Efficient House Plus with Electromobility in Berlin. As part of the project incurred for the publication BMVBS also defined the appropriate standard. The Berlin Efficiency House Plus Various technologies have been tested energy efficiency and home automation in the area. From March 2012, a family has about a year lived in the house. The gained practical knowledge in the field of energy-plus houses show that "... in spite of adverse meteorological conditions, income from the façade-integrated photovoltaic systems were higher than the building and the users needed during the measurement period for the operation of the building. With the excess energy about 25 % of energy requirements of electric vehicles could be covered. The energy consumption in the buildings lay in the measurement period about 75 % higher than previously calculated. This was mainly due to inefficiencies in the area of the heating system due to significantly higher system temperatures than planned, as adopted on the non- demand-controlled outdoor air quantity of ventilation system and at higher current consumption in the household sector. The results of the first year show that in highly efficient homes a monitoring and adjustment phase must necessarily be planned in order to realize the planning parameters determined in practical operation can. " Another focus of the project was to electromobility. Vehicles should draw their power directly from the plus energy house.
Another pilot project are the Jesteburger solar houses south of Hamburg. There are five new single family houses that generate more heat and electricity than they consume themselves.
Since March 2012 There are also a plus energy house for renovated buildings. It is based on a building that was built over forty years ago. Since such houses were up 10,000 12,000 times built alone in the Rhine -Main region, this concept offers a relatively large potential. The project will serve as a model for further renovations and the concept be applied to Mehrgeschossern.
Technologies for energy-efficient construction (latest insulation materials such as vacuum insulation, highly insulating windows and latent heat storage ) and for the efficient provision of space heating, hot water and electricity are used. The model building is made from renewable, natural and recyclable materials.
Austria
In 2012 Austria was created a first Plusenenrgiehaus with the technology center building aspern IQ in the urban development project in Vienna seaside town. The office building has approximately 10,000 m² and 50,000 m³ cubature.