Thursday, September 17, 2009

VT Annual Fund Article

Unlimited Opportunities: The Virginia Tech Annual Fund supports extraordinary student experiences

Alden Haley, Corey McCalla, Kevin Smith, and Danny Slover (left to right) are among the dozens of Virginia Tech students getting valuable experience as part of the Solar Decathlon team.

By Albert Raboteau

Students in Virginia Tech's nationally renowned architecture program learn how to design beautiful structures during their five-year course of study. Actually getting their designs built is something that usually does not happen until they are out working in the field.

But for students like Alden Haley and Corey McCalla that is not the case. They are among the dozens of Hokies -- from a variety of programs -- who are getting real-world experience in their fields of study by participating in theU.S. Department of Energy Solar Decathlon 2009.

With help from faculty advisers, as well as considerable donor support, the students on Virginia Tech’s Solar Decathlon team are building an 800-square-foot home to showcase new possibilities for environmentally friendly design.

Their structure -- which is named LUMENHAUS in homage to the Bauhaus design movement that influenced its look -- will not only have solar panels on the roof, but a computerized system to maximize energy efficiency and user comfort.

"In school it's pretty uncommon to actually have built a house," says Haley, an Ashland, Va., native who, like McCalla, is heading into his fifth year of the architecture program. "It's a handful of people at most, so this is really special."

McCalla, who is from Rockville, Va., says the Solar House is "definitely the most memorable project and one of the most memorable experiences I've had at Virginia Tech, and in my whole education."

Robert Dunay, the T.A. Carter Professor in Architecture, says that is likely to be the case for lots of students.

"This is probably one of the best educational experiences that they get -- to see the transition between the abstraction of their drawings and calculations and the performance of the actual construction," says Dunay, a faculty adviser to the Solar House team.

Architecture students are not the only ones benefiting from the Solar House project. Kevin Smith of Fairfax, Va., says his experience on the project "really ties in with what I’m going to be doing in my career."

He graduated in May 2009 with a bachelor's in mechanical engineering and will soon start working on energy-use analysis for Southland Industries, a mechanical engineering, construction and service firm that operates nationwide and specializes in government buildings.

Shortly before Palisade, Colo., native Danny Slover graduated with a bachelor's in electrical engineering in May 2009, he said: "I had a job interview last week where I talked about [the project]. It shows your ability to work as a team."

Assistant Professor of Architecture Joe Wheeler, another adviser on the project, says students from his college on the Solar House team learn how to work with suppliers, contractors, engineers, and even marketers, which is something they will have to be able to do well if they ever want to have their own architecture firm.

"The ability to work across disciplines is something that they usually don't see until they are out in the profession, so that is kind of an eye opener for them, to see how a real project really works," Wheeler says.

Christine Burke, of Manassas, Va., is on pace to graduate from Pamplin College of Business with a bachelor's in marketing in December 2009. For students like her, the project is a chance for hands-on experience promoting LUMENHAUS. Students are working in creative ways to publicize the house online, including social marketing through Twitter and Facebook.

"I'm interested in brand management, so it's great working on this project because we’ve actually created a brand," Burke says.

Coming up with a communication plan is part of the overall Solar Decathlon completion, which takes place on the National Mall in Washington, D.C.

Virginia Tech is fielding one of 20 student teams in the Solar Decathlon, which is the most recent in a series of such contests sponsored by the U.S. Department of Energy to promote energy efficient construction. Each team will display its entry on the National Mall in Washington, D.C., for three weeks in October 2009.

Virginia Tech has a record of Solar Decathlon success. The university's 2005 entry placed fourth overall, but won first place in four categories: best livability, best architecture, best day lighting, and best electric lighting. The 2005 entry also received the American Institute of Architects President's Award for Best House.

In 2010, the Solar Decathlon team will ship LUMENHAUS to Spain to compete in aEuropean version of the contest. Virginia Tech is one of two U.S. universities invited to participate in that contest.

"Extraordinary opportunities such as competing in the United States' as well as the European Union's solar decathlons come about through private philanthropy," says Jack Davis, dean of Virginia Tech's College of Architecture and Urban Studies. "The annual fund is an important component of the funding portfolio for this project in particular, and the college as a whole. Donors enrich our resources to be able to execute important environmental and energy based research at both the undergraduate and graduate level."

http://www.campaign.vt.edu/campaign-vt/?q=node/475

Tech's 'smart house' goes on display

LumenHaus is Virginia Tech's newest solar-powered home and the university's entry in the 2009 U.S. Department of Energy's Solar Decathlon.

An

Justin Cook | The Roanoke Times

An "oversize load" banner is fastened to the truck before Virginia Tech's solar-powered LumenHaus is moved from Plantation Road to the the Blacksburg Square Shopping Center, where it will be on display until Sept. 1.

About LumenHaus

  • Aka: The Solar House
  • Age: 7
  • Occupation: Prototype of the eco-friendly, energy-efficient house of the future Hometown: Blacksburg
  • Motto: “A brighter way. Everyday.”
  • Awards: 2002, ranked fifth in the U.S. Department of Energy Solar Decathlon; 2005, ranked fourth
  • Now showing: Blacksburg Square Shopping Center, South Main Street
  • Online: lumenhaus.com

A timeline of events

2002

  • Virginia Tech’s newly built Solar House places fifth out of 14 in the first U.S. Department of Energy Solar Decathlon. The event draws more than 100,000 visitors to the “Solar Village” on the National Mall.

2005

  • Tech places fourth overall in the second decathlon but wins top honors for architecture and livability.

2007

  • Tech team sits out the third decathlon and begins design of a new solar house.

2009

  • A LumenHaus exhibit is mounted at the Taubman Museum of Art in Roanoke. The Tech team readies for the U.S. Solar Decathlon scheduled for October in Washington, D.C. The team is invited to compete in the Solar Decathlon Europe in Madrid, Spain, in 2010.

Sources: The Roanoke Times, Virginia Tech and lumenhaus.com

BLACKSBURG -- Imagine the house of the future.

If it gets too hot outside, the house reduces the need for air conditioning by drawing its shade panels.

When temperatures drop in winter, high-efficiency insulation panels slide in place to conserve heat.

In fact, this house could brew your morning coffee and turn on your favorite music before you get out of bed.

Welcome to LumenHaus, Virginia Tech's newest solar-powered "smart house" and the university's entry in the 2009 U.S. Department of Energy's Solar Decathlon.

The name comes from "lumen," meaning "power of light," and "haus," a nod to the Bauhaus architectural movement that inspired the new prototype.

The 800-square-foot LumenHaus is a broad stepping evolution from the original Solar House design that won Tech high marks in the 2002 and 2005 solar decathlons.

The new design incorporates two years of work from dozens of students in various fields of study.

Powered by double-efficient solar panels and heated and cooled with geothermal heat pumps, the house is designed to maximize the use of natural light and expand the living space to the outdoors using expansive decks. The new prototype also uses computer automation to save energy and create a more comfortable living space, architecture professor and project faculty adviser Joe Wheeler said.

One particularly interesting feature was created by computer science students, who wrote an iPhone application to remotely monitor and control the structure's energy use.

Forget to turn off the oven? Irritated that the computer and the TV are sucking electricity while you're at work? With LumenHaus, you can switch them off using your iPhone, Wheeler said.

The original solar house was designed by former Tech architecture graduate students Bryan Atwood and Brett Moss.

While LumenHaus is "a totally new design ... on the other hand, we like to think of it as the evolution of the past project. We don't start over, we just continue to develop the concept," Wheeler said.

The team moved the new house from the Tech campus to the Blacksburg Square Shopping Center this week, where it will be on display until Sept. 1, when the team departs for Washington, D.C.

Once in the capital, the house will go on display at the National Building Museum until October, when the decathlon begins.

In June, the team will load LumenHaus on a ship for transport to Madrid, Spain, where Tech will compete with teams from around the world. LumenHaus is one of two U.S. entries accepted this year to Solar Decathlon Europe, Tech architecture spokeswoman Heather Riley-Chadwick said.

The $350,000 project was funded primarily through corporate sponsorships, Wheeler said.

Prototypes are generally expensive as they require lots of trial and error. But the team is working on making LumenHaus more affordable.

"Market viability is one category in the decathlon," Wheeler said.

Take a video tour of the house by clicking "documentary" at www.lumenhaus.com
http://www.roanoke.com/news/nrv/wb/214619

Video of the move to Blacksburg Square

http://vimeo.com/5995091

Virginia Tech architecture students prepare their entry, LUMENHAUS, for the U.S. Department of Energy's 2009 Solar Decathlon in Washington, D.C.

LUMENHAUS is a zero-energy home that is completely powered by the sun. Other sustainable features include the use of passive energy systems, radiant heating and building materials that are from renewable and/or recyclable sources.

Finishing Touches on VT Solar House

Finishing touches on VT solar house

A Virginia Tech student and faculty built solar house is getting some finishing touches before competition. The house is sitting in a Blacksburg parking lot while student designers complete the interior of the building. It'll be there until September first. That's when the solar house will be moved to Washington, D.C. where it will be showcased at the National Building Museum before the U.S. Department of Energy Solar Decathlon. The competition is held every two years and 20 schools are selected to attend. Each groups must build an 800 square foot house that runs completely on solar power. After D.C., the house will be shipped to Madrid for a European solar design competition

A Virginia Tech student and faculty built solar house is getting some finishing touches before competition.A Virginia Tech student and faculty built solar house is getting some finishing touches before competition.
The solar house will be moved to Washington, D.C. where it will be showcased at the National Building Museum before the U.S. Department of Energy Solar Decathlon.The solar house will be moved to Washington, D.C. where it will be showcased at the National Building Museum before the U.S. Department of Energy Solar Decathlon.
http://www.wdbj7.com/Global/story.asp S=10862040

LUMENHAUS on Solar Feeds

LUMENHAUS: Intelligent Green House of the Future

Virginia Tech’s Solar Decathlon houses of 2002 and 2005 were invaluable learning experiences for the process of the 2009 house. The third Solar Decathlon Competition presents further opportunities to challenge the ideals of solar housing design, integrate technology and architecture, and ultimately promote solar power for the modern homeowner and workforce. A collaborative of students, faculty, and staff from the departments of architecture, industrial design, interior design, building construction, mechanical, structural, and electrical engineering, computer science and the college of business have come together to design, build, communicate and operate a unique solar house that demonstrates a viable and comfortable living and working environment, excellence in sustainable construction, and strong architectonic expression.

While various interpretations exist, the Virginia Tech Solar Team places major emphasis on the duality of sustainability through a “responsive architecture;” not sacrificing a quality through aesthetic value for affordability or sustainability in the architectural context.  Homeowners should not have to make this sacrifice, as all of these objectives can be achieved through thoughtful, innovative design. The Virginia Tech house, named lumenHAUS, proposes solutions to current issues of affordability, sustainability and architectural quality.  Prefabrication methodologies drive these solutions through: innovative transportation techniques, flexibility and multiplicity of design models, architectural responsiveness and an automation of building assemblies.  Our methods of prefabrication are designed to increase access to broad markets and demographics, while also promoting solar power as a viable option for today’s home.

Responsive Architecture

The lumenHAUS design was originally modeled after the Farnsworth House, a modern icon through its open plan, abundance of light and its strong ties to the outdoors and nature. The 700 square foot house instantly triples in square footage and utilizes zero energy for a good part of the year both day and night.  Large sliding-glass doors with screens allow full cross ventilation and a dark grey, polished concrete floor offers thermal massing for the incorporation of a passive solar energy strategy.   Otherwise, an opaque screening system closes tightly to contain and insulate against loss of energy.

The mission of the Virginia Tech Solar Decathlon Team is to inform and educate the public about issues of energy (particularly solar), promote the diffusion of important and innovative technologies, enhance student education, through a design-build, educational process, and engage in innovative research and testing through application.   The breadth of expertise incorporated into the design, engineering and construction of the 2009 home exemplifies multidisciplinary excellence and consideration.

An innovative transportation system allows the house to be transported easily without expensive permitting and very little on-site construction or assembly.  The system, which is inspired by the double drop lowboy trailer, is made up of removable components (axle/wheel assembly on the back and hitch hookup on the front) allowing for simple truck transport, flexible suspension, and higher height clearances than conventional modular transportation methods. Low cost and efficient transportation is a critical component to the future of pre-fab, modular construction.

Our team’s market viability plan utilizes this transportation system with the many advantages of prefab, factory built assemblies that include higher quality control, lower construction cost and less construction waste.  Further, manufacturing technologies present economic opportunity through local workforce development (both skilled and unskilled) and sustainable productivity solutions. 

The design also accounts for community and lifecycle solutions through multiple units that connect or stack with plug-in stairs and entryways, making a holistic system and viable product for variable and changing markets.  The home incorporates major parts, such as screens, which require remote assembly and can easily be attached to the home’s main structure. Each additional item attached to the home is therefore customizable for the locality, environment or desires of the homeowner.  A sustainable community, an extension of the lumenHAUS concept called lumenCITY, has been developed by the team which models different affordable housing schemes and envisions neighborhood growth through a trading of modules to one another, accommodating growth or the modern aspect of shrinking community. 

An Engineering Solution

The home is “intelligent,” containing a computer that collects information and utilizes it to operate house controls, ensuring energy efficient operation and user comfort. The computer can open and close sunshades, moveable insulation panels, and curtains; it can adjust the thermostats and control humidity.  The computer also controls lighting, house music and security.  The home’s engineering design also responds to its environment through the following controls:

-      The house is equipped with a weather station that monitors temperature, wind speed, humidity, and daylight which can be disseminated as localized data;

-      Through the internet, the house can also gather weather forecast information;

Sensors inside the house can monitor interior environmental conditions: temperature, humidity, day lighting and house occupancy. 

During initial occupation, the interface offers a set of questions to the new owner to translate daily routines and schedules, comfort levels, even preferred lighting levels at different times of day to insure its operation at the most efficient energy level.  The computer further programs background music for atmosphere and comfort.  Still, overrides and daily custom operations can easily be achieved through the use of the interface device: the iPhone.  Virginia Tech’s computer science department is developing such an iPhone application which enables one to operate all house systems remotely.  This remote operation includes access to power management displays (above), providing the home’s energy production and consumption, with detailed information on specific components consuming energy. Additionally, the iPhone will facilitate the ease of turning on and off lights, moving automated, exterior insulation or shading panels, or opening and closing curtains.  RFID coding in the phone will lock and unlock your front door; occupancy sensors and daylight sensors will add an additional level of energy management.

The Heating, Ventilation and Air Conditioning (HVAC) system utilizes the latest geothermal heat pump technology. With an earth-tied water-to-water heat pump, low energy hot water is produced which supplies hot water for the hydronic radiant floor system and for domestic hot water.  An additional earth tied water-to-air heat pump provides hot and cold forced air and humidity control.  An efficient air-to-air heat exchanger is also incorporated into the system.   Finally, the thermal massing of the concrete floor increases re-use of solar energy, either via heating of the hydronic system (integrated into the slab) or storage of radiation. 

Home energy is obtained by an 8.4-kilowatt photovoltaic array consisting of 43, 195-watt Sanyo Hit Double-bifacial photovoltaic (PV) panels.  This innovative new technology utilizes both sides of a silica wafer to increase the panels’ outputs up to 15%.  In other words, the roofing membrane (a white PVC rolled-roofing) reflects energy back up to be collected on the reverse side of each solar panel.  Depending on how much ambient light may be reflected onto the panels’ backs, the array could potentially be a 9.4-kilowatt array, more than enough energy to power the home and offer excess energy back into the grid-tied power infrastructure.  The entire array will be mounted on a sun tracking rack system, for increased efficiency, allowing the array to shift from a 17-degree angle in summer to a 35-degree angle in winter. 

 

The above image illustrates the various pools surrounding the home.  Rainwater is collected by a roof drainage system and is filtered and reused inside the house and for irrigation.  Greywater (house water from the shower, bathroom sink and clothes washer) is filtered through a water-land plant system and also reused to fill the toilet basin or for irrigation. 

 

Moveable translucent insulating walls (pictured above behind, and shorter than, the metal panels) utilize polycarbonate panels and Aerogel insulation to generate an r-24 insulation rating, well beyond the efficiency of most home wall assemblies without windows. The house therefore has the ability to adapt to the exterior conditions: if the weather is good, you have the ability to open the house up to the outdoors and expand your interiors or insure a well-insulated assembly when desired. Edges of the panels include inflatable gaskets for a tight fitting closure to ensure the capture of all energy produced during the hours of optimal radiation.  With a low energy lighting system included in these walls, lighting can be easily provided for both interior and exterior spaces when desired. A similar system of shade panels will also slide across the north and south facades to provide shading and privacy as needed.   

Finally, low energy L.E.D. lighting is engineering throughout the home with the latest technology to minimize draw on the power source.  As you see above, the ambient and task light provide a desirable atmosphere for any home, day or night.  The lighting levels are, again, easily controlled using the iPhone interface and allow numerous options for lighting solutions.

Cookout at LUMENHAUS construction site

It's hot in Blacksburg over the summer but the team got to chill out and cookout on occasion.

LUMENHAUS on YouTube

We are building a house . An 800 sq. ft. zero-energy house that is completely powered by the sun. A house that wakes you up, tells you how its doing and dresses for the weather. We think it is the future. 

http://www.youtube.com/user/lumenhaus