Fw: GreenClips.129 10.20.99

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>Welcome to GreenClips, a summary of news on sustainable building design and

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>GreenClips.129 10.20.99

>

>

>EFFICIENT VENTILATION CUTS ENERGY USE AT UK CAMPUS

>At Nottingham University's new Jubilee Campus, an efficient mechanical

>ventilation system that circulates 100 percent fresh air has trimmed

pressure

>drops to a fifth of normal levels, resulting in dramatic savings in fan

>power. Architects Hopkins & Partners, with structural and services

>engineering by Ove Arup & Partners designed six of the campus's eight

>buildings. Arup's experience with other projects suggested that a

>low-pressure mechanical system tied to heat recovery would give better

energy

>performance than natural ventilation. Arup's design introduces air directly

>into roof-mounted air handling units (AHUs), then blows it through vertical

>shafts into floor voids and on into occupied spaces via low pressure floor

>diffusers. Exhaust air leaves through the corridor extract path, then rises

>through the stairwell, returning to the AHUs for heat recovery or

evaporative

>cooling. Strategies to cut pressure losses include: extra large air paths;

a

>sophisticated sequence of bypassing the plant when it is not required; and

>the use of a balanced flue boiler in the air chamber instead of a heating

>coil. Revolving steel cowls sit on top of the stairwells above the AHUs,

>using suction power created by wind to extract exhaust air. Although the

>cowls save less than 1 percent of fan energy, the system's overall success

is

>clear from the pressure drop figures. While a typical system might handle

>1200 Pa to 1600 Pa, depending on the season, here the fans deal with from

280

>Pa to 340 Pa. - Building Services Journal, Aug '99, p 24, by

Palmer.

>

>SCANDINAVIAN HOTEL CHAIN OPENS SECOND ECO-HOTEL

>Following Scandic Hotels' introduction of its 97 percent recyclable hotel

>room in 1995 and the opening of its first eco-hotel-the Oslo Sjolyst-in

1997,

>the company has opened a second eco-hotel in Oslo. The new Byporten Oslo

>hotel has an energy management system that is integrated into the front

>office and the in-room TVs. Rooms not in use are kept at 17.5 degrees C

[63.5

>degrees F]. When a guest checks in, the front office system signals the

>energy management system to increase the temperature to 20 degrees C [68

>degrees F]. Guests can use the TV to override the system. Scandic expects

>this feature to reduce total energy use by 30 percent. Scandic is also

>reducing the overall weight and amount of material used for its rooms. [The

>company is retrofitting about 2,000 hotel rooms per year, using wooden

>floors, wool and cotton textiles, and a minimum of chrome or other metal

>parts. Since 1997, retrofitted rooms have reduced use of plastic by 90 tons

>and metal by 15 tons.] These efforts show that Scandic views ecological

>sustainability not as a cost to the company but as a source of profits and

>competitive advantage - Green Hotelier, Oct '99, p 25 and Scandic web

site.

>[More: <http://www.scandic-hotels.com/br/30/30index.html>]

>

>BALTIMORE OFFICE EMPHASIZES GREEN DESIGN

>Natural light, recycling and other green elements were top priorities for

the

>new offices of Brann Blau, a division of Snyder Communications Inc.

Located

>in a downtown Baltimore office tower and designed by Greenwell Goetz

>Architects of Washington, DC, the 17,000-square-foot space has interior

>conference rooms with " storefront-like windows on the outside walls, so

>occupants can still see the views beyond the corridor and natural light can

>pass directly into the rooms, " says Greenwell Goetz's ph Hittinger.

> " Private offices on the perimeter walls have large clerestory windows and

>side lights, which also allow the light to pass into the interior office

>space. " During demolition, steel studs, the ceiling grid and ductwork were

>recycled. Variable air volume boxes, exhaust fans and insta-hot water

heaters

>were reused. Damaged ceiling tiles were recycled through Armstrong's tile

>reclamation program, and old carpet was sent to DuPont's reclamation

center.

>These and other green initiatives had a negligible effect on the project

>budget, says Hittinger. " Many times companies want to do as much as they

can

>for the environment and their employees. Their greatest fears are that it

>will cost more money and delay the project. This job was a shining example

of

>give and take from all team members to do the best job possible. " -

>Interiors & Sources (IS), Sep '99, by Diane Wintroub Calmenson.

>[Full text: <http://www.isdesignet.com/Magazine/Sept'99/snyder.html>]

>[For more information email Goetz: <lgoetz@...>]

>

>CANADA'S ENERGY EFFICIENCY AWARDS ANNOUNCED

>Natural Resources Canada and the Office of Energy Efficiency have announced

>the winners of Canada's first National Energy Efficiency Awards. Fifteen

>awards were issued, recognizing Canadians who show innovation and

leadership

>in developing energy-saving technologies and strategies. The winner of the

>Commercial Building Projects category is the Yukon Energy Corporate Office

in

>Whitehorse [Yukon Territory], by Florian Maurer and Zedda of Maurer

>Kobayashi Architects Ltd. of Whitehorse. It is the first building in

Canada's

>far north built to C-2000 standards [which promote energy efficiency and

>environmental responsibility in commercial construction]. The Student

>Competition award went to Vince Covatta, Grisolia and

>Staniscia of Ryerson Polytechnic University for their Urban Retreat, a

>high-density residential building. The winner of the Residential category

is

>the Dumont Residence in Saskatoon [saskatchewan], designed by Dr.

>Dumont. The house incorporates high levels of insulation, passive solar

>exploitation, ventilation heat recovery, and active solar heating for

>domestic hot water and partial space heating.

>- Canadian Architect, Sep '99, p 7.

>[More: <http://eeb-dee.rncan.gc.ca/conference/oee_winner_e.htm>]

>

>PRACTICAL MEASURES REDUCE VIRGINIA HOME'S IMPACT

>Cathleen McCoy and Shaw's new 4,000-square-foot residence, built

on

>60 rural acres in western Virginia, shows that a house can be energy

>efficient and environmentally sensitive while remaining comfortable and

>attractive. Architects Page son and Jim Burton of Berryville,

>Virginia designed the passive solar house, which features south-facing

>expanses of glass to capture daylight. Heat from the winter sun is absorbed

>by a stone fireplace wall, a stretch of concrete flooring, and kitchen

>counters made of fireslate, the black composite material used for tabletops

>in high school science labs. A house doesn't have to " scream solar, "

>says. It can have " solar parts like a lineup of French doors facing south. "

>Structural insulated panels made of rigid oriented strandboard sandwiched

>around a foam core save energy by allowing less air infiltration than stick

>construction that uses studs and insulation batts. The air conditioning

bill

>for June through September was $300, half of what it would be for a

>comparably sized conventional house. Other green features include a copper

>chain attached to the overhanging eaves that captures rainwater for garden

>irrigation, and a fireplace built of stones salvaged from a nearby

>18th-century house that had been demolished. " It's about deciding not to

use

>more than your share, " McCoy says. " We try to do our part. " - The

>Washington Post, 21 Oct '99, p T12, by Dane .

>[For more information email Jim Burton <jim@...>]

>

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