Rolf Disch Solar Architecture

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Rolf Disch Solar Architecture
Solar architecture, Green project development
Industry Sustainable Development, Architecture
Founded1969
Founder Rolf Disch
Headquarters,
Products PlusEnergy buildings, Heliotrope
Website www.rolfdisch.de
www.plusenergiehaus.de

Rolf Disch Solar Architecture, creators of the Heliotrope as well as several other visionary green building projects, is based in the solar city Freiburg, Germany. Led by solar pioneer Rolf Disch, who has been building with the sun for more than 40 years, this architecture office's prolific portfolio also includes such successful projects as the Solar Settlement and the Sun Ship. As winners of the 2002 European Solar Prize and the 2003 Global Energy Award these projects demonstrate the power of solar architecture; harness the sun both passively and actively. Lying at the base of the Black Forest, in the sunniest city in Germany, Rolf Disch Solar Architecture offers a premium design that exceeds the highest ecological standards while creating profitable opportunities for their investors.

Heliotrope (building) building in Freiburg im Breisgau, Germany

The Heliotrope is an environmentally friendly house designed by the German architect Rolf Disch who also designed the Sonnenschiff (Sun Ship). Three such houses exist in Germany, the first experimental version having been built in 1994 as the architect's home in Freiburg im Breisgau, while the other two are used as exhibition buildings for the Hansgrohe company in Offenburg and a dentist's lab in Hilpoltstein in Bavaria. The Heliotrope in Freiburg was the first building in the world to capture more energy than it uses, all of which is entirely renewable, emissions free and CO2 neutral. The structure physically rotates to track the sun, which allows it to harness the maximum natural sunlight and warmth possible. Several different energy generation modules are used in the building including a 603 sq ft (56.0 m2) dual-axis solar photovoltaic tracking panel, a geothermal heat exchanger, a combined heat and power unit (CHP) and solar-thermal balcony railings to provide heat and warm water. These innovations in combination with the superior insulation of the residence allow the Heliotrope to capture anywhere between four and six times its energy usage depending on the time of year. The Heliotrope is also fitted with a grey-water cleansing system and built-in natural waste composting.

Germany Federal parliamentary republic in central-western Europe

Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps, Lake Constance and the High Rhine to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.

Rolf Disch German architect

Rolf Disch is a German architect, solar energy pioneer and environmental activist. Born in Freiburg im Breisgau, Germany, Disch has dedicated particular focus to regional renewable and sustainable energy.

Contents

Background

Led by Germany’s solar architecture pioneer Rolf Disch, this architecture firm has built with the sun as its foundation since 1969. Rolf Disch Solar Architecture has implemented the most up-to-date technology to design sustainable buildings from churches and schools, to homes and commercial developments. With the creation of the PlusEnergy concept, their design has focused more and more specifically on positive energy balanced buildings, which generate more power than the consume through extremely efficient energy use and photovoltaic panel use. In 1994 they created the Heliotrope, the first building worldwide to create more energy than it uses. With the application of this PlusEnergy concept, Rolf Disch Solar Architecture further developed the concept into homes that use acute energy efficiency and have roofs made entirely of photovoltaic panels. 59 of these PlusEnergy homes were built as the Solar Settlement between 2002 and 2004, later to be followed by the Sun Ship. The Sun Ship, finished in 2006, is a retail, commercial/office and residential building with 60,000 sq ft (5,600 m2). that also produces more energy than it consumes. Also the first building of its kind worldwide, the Sun Ship was truly the most extensive example of sustainable and renewable energy building by Rolf Disch Solar Architecture.

Solar architecture

Solar architecture is an architectural approach that takes in account the Sun to harness clean and renewable solar power. It is related to the fields of optics, thermics, electronics and materials science. Both active and passive solar housing skills are involved in solar architecture.

PlusEnergy

PlusEnergy is a term used in building design to describe a structure that produces more energy than it uses. The term was coined in 1994 by Rolf Disch when building his private residence, the Heliotrope as the first PlusEnergy house in the world. Disch then went on to refine the concepts involved with several more projects built by his company Rolf Disch Solar Architecture in order to promote PlusEnergy for wider adoption in residential, commercial and retail spaces. Disch maintains that PlusEnergy is more than just a method of producing environmentally-friendly housing, but also an integrated ecological and architectural concept. As such, PlusEnergy is intended to be superior to low-energy or zero-energy designs such as those of Passivhaus.

Sun Ship (building) integrated office/retail building in Freiburg, Baden-Württemberg, Germany

The Sun Ship is a large integrated office/retail building designed by architect Rolf Disch and located in Freiburg directly next to the Solar Settlement by the same designer. It uses 60,000 sq. ft. for retail, commercial and residential space.

PlusEnergy

PlusEnergy is a coined concept developed by Rolf Disch that indicates a structure's extreme energy efficiency so that it holds a positive energy balance, actually producing more energy than it uses. With the completion of his private residence, the Heliotrope, in 1994, Disch had created the first PlusEnergy house in the world. The sheer logic of a home that creates more energy than it consumes made perfect sense to Disch. His next goal in its development was thus the mass application of the concept to residential, commercial and retail space. As the concept further developed and gained financial backing as well, Rolf Disch Solar Architecture built several more projects with PlusEnergy certifications. PlusEnergy is a simple concept that has been materialized in a technical design. “PlusEnergy is a fundamental environmental imperative,” Disch claims. [1] Disch believes that passive building isn't enough because passive homes still emit CO2 into the atmosphere – we can solar activate our homes!

Heliotrope

Built originally in 1994 as the private residence and special project of Rolf Disch, the Heliotrope is a one-of-a-kind design. The Heliotrope in Freiburg was the first building in the world to create more energy than it uses, of which is entirely renewable, emissions free and CO2 neutral. The structure physically rotates to track the sun, which allows it to harness the maximum natural sunlight and warmth possible from the sun. Several different energy generation modules are used in the building including a 603 sq ft (56.0 m2) dual-axis solar photovoltaic tracking panel, a geothermal heat exchanger, a combined heat and power unit (CHP) and solar-thermal balcony railing to provide heat and warm water. These innovations in combination with the superior insulation of the residence allow the Heliotrope to produce anywhere between four and six times its energy usage depending on the time of year. The Heliotrope is also fitted with a grey-water cleansing system and built-in natural waste composting. After the success of Freiburg's Heliotrope, Hansgrohe contracted Rolf Disch Solar Architecture to design and built another Heliotrope to be used as a visitor's center and showroom in Offenburg, Germany. A third Heliotrope was then contracted and built in Hilpoltstein, Bavaria to be used as a technical dental laboratory. Disch's unique design accommodates different utilization from private residences to laboratories, all the while maintaining the structure's positive energy balance. In addition to the original Heliotrope design, Rolf Disch Solar Architecture has drawn plans for larger versions of the project to be built as rotating hotels, which give every guest a beautiful view, as well as administrative buildings and even an exhibition pavilion for the EXPO 2010 in Shanghai.

Solar tracker device that orients a payload towards the sun.

A solar tracker is a device that orients a payload toward the Sun. Payloads are usually solar panels, parabolic troughs, fresnel reflectors, lenses or the mirrors of a heliostat.

Geothermal heat pump heating and/or cooling system that transfers heat to or from the ground

A geothermal heat pump or ground source heat pump (GSHP) is a central heating and/or cooling system that transfers heat to or from the ground.

Cogeneration simultaneous generation of electricity, and/or heating, or cooling, or industrial chemicals

Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Trigeneration or combined cooling, heat and power (CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector. The terms cogeneration and trigeneration can be also applied to the power systems generating simultaneously electricity, heat, and industrial chemicals – e.g., syngas or pure hydrogen.

Solar Settlement

With the success of the Heliotrope, Rolf Disch Solar Architecture wanted to apply their PlusEnergy concept to mass residential production. The new design for the PlusEnergy house gave way to the development of the Solar Settlement, a 50 PlusEnergy home housing community. This residential complex won such awards as 2002 House of the Year, 2002 residential PV solar integration award, 2006 Germany's most beautiful housing community. It is the first housing community in the world in which all the homes produce a positive energy balance and which is emissions-free and CO2 neutral. Built between 2000 and 2005 in the Vauban quarter of Freiburg, the Solar Settlement has proved Disch's vision of a “fundamental environmental imperative” as these homes have exhibited more than 8 years of full occupancy and each produced more than 4,000 Euros ($5,600) each year. The design of each home offers maximum energy efficiency and turns energy bills into energy income. Rolf Disch Solar Architecture considers the image such a community exhibits is equally as important as the eco-savings it brings. The tenants at the Solar Settlement do not claim to have made any compromises in their living situations but rather that they have both environmentally and economically improved. Made from Black Forest timber, the wood interior and natural lighting provide for happily lit spaces and a natural flow from room to room.

Vauban, Freiburg District of Freiburg im Breisgau, Baden-Württemberg, Germany

Vauban is a neighbourhood to the south of the town centre in Freiburg, Germany. It was built as "a sustainable model district" on the site of a former French military base named after Sébastien Le Prestre de Vauban, the 17th century French Marshal who built fortifications in Freiburg while the region was under French rule. Construction began in 1998. In the year 2001 the first 2000 residents moved in.

Black Forest mountain range in Baden-Württemberg, southwestern Germany

The Black Forest is a large forested mountain range in the state of Baden-Württemberg in southwest Germany. It is bounded by the Rhine valley to the west and south. Its highest peak is the Feldberg with an elevation of 1,493 metres (4,898 ft). The region is roughly oblong in shape with a length of 160 km (99 mi) and breadth of up to 50 km (31 mi).

Sun Ship

Rolf Disch Solar Architecture then morphed the PlusEnergy design concept into a large integrated office/retail building. The Sun Ship, located directly next to the Solar Settlement in Freiburg, uses its 60,000 sq ft (5,600 m2). for retail, commercial and residential space. The Sun Ship houses a supermarket, convenience store and bakery-café on the first floor, offices and work spaces on the 2-4 floors and 9 penthouses on its roof. As a whole, this building produces more energy than it consumes per year and utilizes the most up-to-date building technology. Some aspects that make this building particularly unique are its vacuum insulated walls, ventilation with 95% heat recovery, triple paned windows and its energy façade. As the first positive energy office building worldwide, the Sun Ship exhibits not only extreme efficiency but also a warm environment to work in. The office spaces are flanked on both the North and South ends entirely with windows, which maximizes natural sunlight, employee views and minimizes the energy wasted by artificial light. In addition to the office and retail space, two conference rooms, one large and one small, provide space for lectures, meetings and as a showroom.

Community Planning

Community planning goes hand in hand with sustainable development and thus Rolf Disch Solar Architecture dedicates much if their design and planning to the symbiosis of their projects surroundings. A solar community generates identification and an enormous public image. Disch says he attracts great tenants, innovative undertakings and creative work places through his design. Rolf Disch Solar Architecture always aims to create a community with combined uses for an ecological urban planning concept like traffic management – with wide, attractive walkways, bike routes and connections to public transportation. At the Solar Settlement for example, tenants and owners incorporate bike- and car-sharing and the neighborhood has an extensive car-free zone with many public transportation connections. Rolf Disch Solar Architecture also has incorporated community solutions for energy. For example, a biomass cogeneration unit is extremely expedient, which meets the (reduced) additional heating demands for his PlusEnergy homes.

Awards

2008 German Sustainability Award
2007-08 Japanese PEN-Magazine Creativity Award
2006 Germany's most beautiful housing community
2005 Wuppertal Energy and Environment Prize
2003 Global Energy Award
2002 European Solar Prize
2001 Photovoltaic Architecture Prize Baden-Württemberg

Selected works

See also

Related Research Articles

Environmental design is the process of addressing surrounding environmental parameters when devising plans, programs, policies, buildings, or products. Classical prudent design may have always considered environmental factors; however, the environmental movement beginning in the 1940s has made the concept more explicit.

Energy-plus-house

An energy-plus house produces more energy from renewable energy sources, over the course of a year, than it imports from external sources. This is achieved using a combination of microgeneration technology and low-energy building techniques, such as: passive solar building design, insulation and careful site selection and placement. A reduction of modern conveniences can also contribute to energy savings, however many energy-plus houses are almost indistinguishable from a traditional home, preferring instead to use highly energy-efficient appliances, fixtures, etc., throughout the house.

Passive house

Passive house is a rigorous, voluntary standard for energy efficiency in a building, which reduces the building's ecological footprint. It results in ultra-low energy buildings that require little energy for space heating or cooling. A similar standard, MINERGIE-P, is used in Switzerland. The standard is not confined to residential properties; several office buildings, schools, kindergartens and a supermarket have also been constructed to the standard. Passive design is not an attachment or supplement to architectural design, but a design process that integrates with architectural design. Although it is principally applied to new buildings, it has also been used for refurbishments.

Zero-energy building

A zero-energy building, also known as a zero net energy (ZNE) building, net-zero energy building (NZEB), net zero building or zero-carbon building is a building with zero net energy consumption, meaning the total amount of energy used by the building on an annual basis is roughly equal to the amount of renewable energy created on the site, or in other definitions by renewable energy sources elsewhere. These buildings consequently contribute less overall greenhouse gas to the atmosphere than similar non-ZNE buildings. They do at times consume non-renewable energy and produce greenhouse gases, but at other times reduce energy consumption and greenhouse gas production elsewhere by the same amount. A similar concept approved and implemented by the European Union and other agreeing countries is nearly Zero Energy Building (nZEB), with the goal of having all buildings in the region under nZEB standards by 2020.

Schwarzwald-Stadion Football stadium

Schwarzwald-Stadion is a football stadium in Freiburg, Baden-Württemberg, Germany. It is currently the home of Bundesliga team SC Freiburg. The stadium holds 24,000 spectators and was built in 1953. For many years it was called the Dreisamstadion, situated near the river Dreisam.

Solar air conditioning refers to any air conditioning (cooling) system that uses solar power.

Sonnenschiff

The Sun Ship is a small community that is run entirely by solar energy. It was built in 2004 in Freiburg im Breisgau's renowned Vauban quarter. Sonnenschiff was designed by architect Rolf Disch, who also built the Heliotrope, and generates four times more energy than it uses.

Solar Settlement at Schlierberg housing community in Freiburg am Breisgau, Baden-Württemberg

The Solar Settlement at Schlierberg is a 59-home PlusEnergy housing community in Freiburg, Germany. Solar architect Rolf Disch wanted to apply his PlusEnergy concept, created originally with his Heliotrope home, to mass residential production. This residential complex won such awards as House of the Year (2002), Residential PV solar integration award (2002), Germany’s most beautiful housing community (2006). It is the first housing community in the world in which all the homes produce a positive energy balance and which is emissions-free and CO
2
neutral. Built between 2000 and 2005 in the Vauban quarter of Freiburg the design of each home offers maximum energy efficiency and turns energy bills into energy income. The Solar Settlement has proved Disch’s vision of a “fundamental environmental imperative” as these homes have exhibited more than 8 years of full occupancy and each produced more than 4,000 Euros ($5,600) each year in solar energy profits. Disch believes the image his community exhibits is equally as important as the eco-savings it brings. Disch says 50 homes that eliminate energy bills and feed clean sustainable renewable energy into the city’s grid is the imperative we need. They contribute towards the goal of sustainable ecological and economic development and show the entire world that communities like this are economical, beautiful, comfortable and in fact preferable. The tenants at the Solar Settlement do not claim to have made any compromises in their living situations but rather that they have both environmentally and economically improved. Made from Black Forest timber, the wood interior and natural lighting provide for happily lit spaces and a natural flow from room to room.

German developments that employ green building techniques include:

Community solar farm

A community solar farm or garden is a solar power installation that accepts capital from and provides output credit and tax benefits to individual and other investors. In some systems you buy individual solar panels which are installed in the farm after your purchase. In others you purchase kW capacity or kWh of production. The farm's power output is credited to investors in proportion to their investment, with adjustments to reflect ongoing changes in capacity, technology, costs and electricity rates. Companies, cooperatives, governments or non-profits operate the farms.

The following outline is provided as an overview of and topical guide to solar energy:

Climate-adaptive building shell (CABS) is a term in building engineering that describes the group of facades and roofs that interact with the variability in their environment in a dynamic way. Conventional buildings have static building envelopes, and can therefore not act in response to changing weather conditions and occupant requirements. Climate adaptive building shells, on the other hand do have the ability to change with time. Well-designed CABS have two main functions: they contribute to energy-saving for heating, cooling, ventilation and lighting; and they induce a positive impact on the indoor environmental quality of buildings.

References