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What is a passive house and how is the architecture designed?

There are many reasons to build a passive house. The most important are related to the cost advantages you enjoy by building a passive house. The architecture of a passive house is designed so that the basic needs of the home owner, with respect to energy supply, are autonomously controlled. As the term "passive" implies, regulating the energy balance requires no action on your part. This capability stems from the architecture of the house. Roughly 8,000 people in Germany have meanwhile taken advantage of this architecture to build a passive house. But how does a passive house function and what is the respective architecture basically made of? The architecture is typically designed so that the outer shell of the passive house is insulated to keep the heat from escaping outside.

The passive house runs on its own

When building a passive house, a ventilation system acts to additional recover 80 percent of the heat. The roof of a passive house is designed to capture additional heat and store it until the room temperature sinks enough so that it must be released. Related studies have shown that a passive house constantly maintains an indoor temperature of more than 20°C at an outside temperature of -14°C. A passive house provides the freedom to individualize the architecture. The owner can decide whether to build the house out of concrete/brick, wood or a combination. The architecture always depends on the architect and the individual plan. However, there are several factors to consider when building a passive house.

The characteristics of a passive house thanks to its architecture

Passive houses exhibit specific characteristics that are tied to the architecture. The external building components must be extremely well insulated in addition to carefully constructing the corners, edges, joints and other cross sections. This would otherwise lead to excessive heat loss and failure of the architecture to fulfill the desired requirements. By taking these factors into account and using the right approach to building a passive house, one can expect a minimal heat loss of only .15 watts per square meter of external surface area. If you are building a house, the architecture should be designed to maximize the energy gain through the solar cells. For this reason, the solar cells on the roof of the passive house must have a southerly orientation.

To build a passive house, it should be designed such that the respective solar collectors and heat pumps supply power to the hot water system. When building a passive house and using the appropriate architecture, you can expect to significantly lower your operating costs.

Lower the operating costs

The architecture is what makes it possible for you to build a passive house and to have a complete energy system that runs on its own. While more and more people are dreaming of building a house, it always involves high costs. With the right architecture, you can build a passive house assuming that you will benefit from significantly lower monthly operating costs. This approach allows you to build to a house that runs completely on its own thanks to the corresponding high-quality architecture . Because the architecture is so well thought-out, you can build this house under the assumption that the heating balance will regulate itself. For this reason, you can assume that building a house is a worthwhile effort.

Architecture and Construction

Here you can discover new and innovative developments from the world of building design and construction.

innovations-report offers reports and articles on a variety of topics such as building optimization, modern construction materials, energy-efficient construction, natural insulation materials and passive buildings.

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Designing buildings with a positive energy balance

Until now most existing buildings have been pure energy consumers: the electricity comes from the power grid and the heat from a boiler, heat pump or heating network. However, buildings have a range of possibilities available to them to generate the energy they need by themselves.

The BINE Themen-info brochure “Net Zero Energy and Net Energy Plus Buildings” presents the various concepts. One focus is on how the energy balance for these...

18.03.2016 | nachricht Read more

Simulating future noise in order to prevent it

Noise is disturbing and can be harmful to health. Empa researchers have now succeeded in simulating road noise by means of «auralisation». The aim is to make noise audible along traffic routes that are merely in the planning stage – and thus include countermeasures at the same time.

Noise is disturbing and can be harmful to health. Empa researchers have now succeeded in simulating road noise by means of «auralisation». The aim is to make...

23.02.2016 | nachricht Read more

Morgenstadt: City Insights innovation network is partnering with the Argentinian capital

This year, Buenos Aires became a partner in the Morgenstadt: City Insights innovation network. In collaboration with the Fraunhofer-Gesellschaft, the city will be conducting projects focusing on resource and energy efficiency, climate protection, and sustainable mobility. The Argentinian metropolis is the first South American city to join the innovation network.

Megatrends such as climate change, resource scarcity, demographic change and rising affluence are changing our cities.

22.02.2016 | nachricht Read more

SCHOTT to show restoration glasses that meet modern requirements at "Monumento"

The restoration glasses TIKANA®, RESTOVER® and GOETHEGLAS will be focused by the technology group SCHOTT at its premiere at Monumento, the trade fair on monument preservation, to be held in Salzburg, Austria, from January 28 - 30, 2016 (Hall 10, Booth 124). With these types of products that are produced using authentic techniques, architects cannot only restore original historical monuments from different eras. These glasses can also be processed in many ways and thus help to meet contemporary constructional requirements and capabilities –from UV protection to thermal insulation.

The restoration of old monuments is a delicate task for a number of reasons. On the one hand, it is of high importance for the monument preservation...

26.01.2016 | nachricht Read more

Carbon Fibre-Reinforced Concrete Offers Innovative Solutions for Civil Engineering

Illuminated pavilions on campus demonstrate the use of curved shell structures made of carbon fibre-reinforced concrete, a project of the Lightweight Construction Research Group at the TU Chemnitz

Concrete which is reinforced with textiles instead of steel combines many advantages: it saves raw materials, has high potential for lightweight construction,...

11.01.2016 | nachricht Read more

Drilling like lightning

95% of the geothermal water resources in Germany are situated in crystalline rock. Existing drilling methods, however, are only able to advance slowly though this hard rock and the drill bits wear out quickly. The BINE Projektinfo brochure “Electric impulses fragment hard rock” (13/2015) presents an alternative drilling procedure. Here, a high-voltage impulse fragments the rock. This method causes little wear to the drill bits and enables up to 30% lower drilling costs.

New process uses high voltage for deep geothermal drilling

02.12.2015 | nachricht Read more

Hospital energy centre connected with heating network

Working in conjunction with Giessen’s municipal utility company, Giessen and Marburg University Hospital has become the first German hospital to integrate its energy centre into an urban district heating network. The core of the combined cooling, heating and power plant is provided by four cogeneration modules that produce electricity and heat. The BINE Projektinfo brochure 12/2015 “Energy centre supplies Giessen University Hospital” describes the initial operating experiences.

The newly developed trigeneration plant reduces CO2 by around a third

26.11.2015 | nachricht Read more

Innovative Photovoltaics – from the Lab to the Façade

Fraunhofer ISE Demonstrates New Cell and Module Technologies on its Outer Building Façade

The Fraunhofer Institute for Solar Energy Systems ISE has installed 70 photovoltaic modules on the outer façade of one of its lab buildings. The modules were...

25.11.2015 | nachricht Read more

Structure of "concrete disease" solved

When bridges, dam walls and other structures made of concrete are streaked with dark cracks after a few decades, the culprit is AAR: the alkali-aggregate reaction. Also called the "concrete disease" or even "concrete cancer", it is a chemical reaction between substances contained in the material and moisture seeping in from outside. Researchers from the Paul Scherrer Institute PSI and Empa have now solved the structure of the material produced in the course of AAR at atomic level – and have thereby discovered a previously unknown crystalline arrangement of the atoms.

 

06.11.2015 | nachricht Read more

The Growth and Decline of Cities in Germany: Novel Visualisations of Urban Change

Innovative maps that illustrate the most recent socio-demographic urban changes in the major city urban agglomerations in Germany have very recently been produced in a joint project of the School of Geography and the Environment at the University of Oxford and the Research Institute for Regional and Urban Development Dortmund (Germany).

The Research Institute for Regional and Urban Development (Institut für Landes- und Stadtentwicklungsforschung, ILS) investigates new social processes,...

29.10.2015 | nachricht Read more
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Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Nuclear Pores Captured on Film

Using an ultra fast-scanning atomic force microscope, a team of researchers from the University of Basel has filmed “living” nuclear pore complexes at work for the first time. Nuclear pores are molecular machines that control the traffic entering or exiting the cell nucleus. In their article published in Nature Nanotechnology, the researchers explain how the passage of unwanted molecules is prevented by rapidly moving molecular “tentacles” inside the pore.

Using high-speed AFM, Roderick Lim, Argovia Professor at the Biozentrum and the Swiss Nanoscience Institute of the University of Basel, has not only directly...

Im Focus: 2+1 is Not Always 3 - In the microworld unity is not always strength

If a person pushes a broken-down car alone, there is a certain effect. If another person helps, the result is the sum of their efforts. If two micro-particles are pushing another microparticle, however, the resulting effect may not necessarily be the sum their efforts. A recent study published in Nature Communications, measured this odd effect that scientists call “many body.”

In the microscopic world, where the modern miniaturized machines at the new frontiers of technology operate, as long as we are in the presence of two...

Im Focus: Tiny microbots that can clean up water

Researchers from the Max Planck Institute Stuttgart have developed self-propelled tiny ‘microbots’ that can remove lead or organic pollution from contaminated water.

Working with colleagues in Barcelona and Singapore, Samuel Sánchez’s group used graphene oxide to make their microscale motors, which are able to adsorb lead...

Im Focus: ORNL researchers discover new state of water molecule

Neutron scattering and computational modeling have revealed unique and unexpected behavior of water molecules under extreme confinement that is unmatched by any known gas, liquid or solid states.

In a paper published in Physical Review Letters, researchers at the Department of Energy's Oak Ridge National Laboratory describe a new tunneling state of...

Im Focus: Bionic Lightweight Design researchers of the Alfred Wegener Institute at Hannover Messe 2016

Honeycomb structures as the basic building block for industrial applications presented using holo pyramid

Researchers of the Alfred Wegener Institute (AWI) will introduce their latest developments in the field of bionic lightweight design at Hannover Messe from 25...

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