Rolf Disch Solar Architecture

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.

Rolf Disch Solar Architecture
Solar architecture, Green project development
IndustrySustainable Development, Architecture
Founded1969
FounderRolf Disch
Headquarters
Freiburg
,
Germany
ProductsPlusEnergy buildings, Heliotrope
Websitewww.rolfdisch.de
www.plusenergiehaus.de

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.

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.

  • Heliotrope in Freiburg
  • Bird's eye view of the Heliotrope in Freiburg
  • Heliotrope-Hotel Schloss Waretenstein

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.

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
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See also

References
  1. http://www.rolfdisch.de
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