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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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City research draws on Formula 1 technology for the construction of skyscrapers

Civil engineering academic is developing new vibration-control devices based on Formula 1 technology for skyscrapers

City, University London draws on Formula 1 technology for the construction of "needle-like" skyscrapers.

10.12.2019 | nachricht Read more

Living bridges: How traditional Indian building techniques can make modern cities more climate-friendly

Dense, humid broadleaf forests, monsoon-swollen rivers and deep ravines – in the Indian state of Meghalaya wooden bridges easily decay or are washed away in floodwaters. Bridges made from steel and concrete are pushed to their limits here as well. But bridges made of living tree roots can survive here for centuries. Prof. Ferdinand Ludwig of the Technical University of Munich (TUM) has investigated these special structures and proposes integrating this extraordinary building technique in modern architecture.

Inaccessible valleys and ravines lead from the North East Indian Meghalaya plateau to the wide plains of Bangladesh. In the monsoon months the mountain streams...

18.11.2019 | nachricht Read more

Corrosion - Slow Decay

"Corrosion" comes from Latin "corrodere": to gnaw something to pieces. This refers to the gradual destruction of a sub- stance due to the influence of other substances in the environment. Specialists at Empa take a close look at such processes and can find timely ways to prevent material failure due to corrosion – long before disasters such as those in Genoa occur.

The owner of a new Swiss industrial facility for the production of high-tech machinery was faced with a mystery: Kilometres of brand new stainless steel and...

22.10.2019 | nachricht Read more

Switch2save: smart windows and glass façades for highly efficient energy management

Smart Glass Solutions – such as electrochromic (EC) and thermochromic (TC) windows and glass façades –control the radiation energy transfer with the "touch of a button" and thus can drastically reduce the energy demands for heating and air conditioning of large buildings. On 1st October 2019, the EU-funded initiative "Switch2save" was launched to improve the availability and affordability of EC and TC smart glass technologies. The consortium of ten partners from research and industry will demonstrate the energy saving potential of smart glass solutions in two fully-operational buildings.

Climate change is a topic now on everyone's lips and climate targets are being discussed at all levels. Solutions such as the use of natural resources for...

15.10.2019 | nachricht Read more

Switch2Save: smart windows and glass façades for highly efficient energy management using novel switching technologies

On October 1, 2019, the EU-funded initiative “Switch2Save” was launched to improve the availability and affordability of electrochromic and thermochromic smart glass technologies. The consortium of ten partners from research and industry will demonstrate the energy saving potential of smart glass solutions in two fully-operational buildings.

Climate change is a topic now on everyone's lips and climate targets are being discussed at all levels. Solutions such as the use of natural resources for...

04.10.2019 | nachricht Read more

Wood that Shapes Itself

Report in Science Advances: Sophisticated modelling technology opens up new avenues in timber construction and digital design.

Researchers from the University of Stuttgart, ETH Zurich and the Swiss Empa have presented a method with which wood panels themselves bend into a previously...

16.09.2019 | nachricht Read more

For a better climate in the cities: Start-up develops maintenance-free, evergreen moss façades

Air pollution is increasing in many cities. It is also getting warmer and warmer and flooding occurs during heavy rain because the surfaces are sealed. Therefore, new concepts are needed to ensure that cities remain livable for their inhabitants, including more green spaces that ensure a pleasant climate and keep the air clean. The greening of façades is also important. A start-up of Technische Universität Kaiserslautern has developed a system for green façades that is maintenance-free and, thanks to moss, self-greening. The founders market this system through their company "Artificial Ecosystems". For their idea, they were awarded 1st place in the Rhineland-Palatinate Ideas Prize 2019.

Around 400 million years ago, mosses formed on Earth. Unlike other plants, they do not have roots. "They filter their nutrients out of the air," says botanist...

25.06.2019 | nachricht Read more

5G transmission masts made of wood for an attractive and sustainable cityscape

The new 5G radio standard is intended to make our communication and data transmission considerably faster and more efficient. For this to be possible, a sufficient number of transmission masts are needed. In a seminar held in the Department of Architecture at Technische Universität Kaiserslautern, participants discussed the possible design of these masts. For their models, the students have opted for the environmentally friendly material wood. The best designs are currently being constructed. Over the next few weeks, it is planned to install them as part of a pilot project in Kaiserslautern.

5G transmission masts have to be distributed throughout the entire area in order to ensure reliable data transmission. In order not to adversely affect the...

20.05.2019 | nachricht Read more

Building-Integrated Photovoltaics Moves from the Niche to the Mass Market

Industrial manufacture of solar building components and their integration into the building planning process

The majority of photovoltaic (PV) systems in Germany are roof-mounted using a mounting system to fix the modules. On the other hand, solar PV modules that are...

13.03.2019 | nachricht Read more

Seeing Through the Stones of Cathedrals

Bamberg heritage conservationists develop new imaging process

The cathedrals of Cologne, Pisa, Ghent, Vitoria-Gasteiz und Vienna are up to one thousand years old, and they are all victims of the ravages of time. Even the...

07.03.2019 | nachricht Read more
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Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Programmable nests for cells

KIT researchers develop novel composites of DNA, silica particles, and carbon nanotubes -- Properties can be tailored to various applications

Using DNA, smallest silica particles, and carbon nanotubes, researchers of Karlsruhe Institute of Technology (KIT) developed novel programmable materials....

Im Focus: Miniature double glazing: Material developed which is heat-insulating and heat-conducting at the same time

Styrofoam or copper - both materials have very different properties with regard to their ability to conduct heat. Scientists at the Max Planck Institute for Polymer Research (MPI-P) in Mainz and the University of Bayreuth have now jointly developed and characterized a novel, extremely thin and transparent material that has different thermal conduction properties depending on the direction. While it can conduct heat extremely well in one direction, it shows good thermal insulation in the other direction.

Thermal insulation and thermal conduction play a crucial role in our everyday lives - from computer processors, where it is important to dissipate heat as...

Im Focus: Fraunhofer IAF establishes an application laboratory for quantum sensors

In order to advance the transfer of research developments from the field of quantum sensor technology into industrial applications, an application laboratory is being established at Fraunhofer IAF. This will enable interested companies and especially regional SMEs and start-ups to evaluate the innovation potential of quantum sensors for their specific requirements. Both the state of Baden-Württemberg and the Fraunhofer-Gesellschaft are supporting the four-year project with one million euros each.

The application laboratory is being set up as part of the Fraunhofer lighthouse project »QMag«, short for quantum magnetometry. In this project, researchers...

Im Focus: How Cells Assemble Their Skeleton

Researchers study the formation of microtubules

Microtubules, filamentous structures within the cell, are required for many important processes, including cell division and intracellular transport. A...

Im Focus: World Premiere in Zurich: Machine keeps human livers alive for one week outside of the body

Researchers from the University Hospital Zurich, ETH Zurich, Wyss Zurich and the University of Zurich have developed a machine that repairs injured human livers and keep them alive outside the body for one week. This breakthrough may increase the number of available organs for transplantation saving many lives of patients with severe liver diseases or cancer.

Until now, livers could be stored safely outside the body for only a few hours. With the novel perfusion technology, livers - and even injured livers - can now...

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