Presentation on theme: "The Dalles Middle School"— Presentation transcript:
1The Dalles Middle School A High Performance SchoolThe Dalles School District has applied for a gold LEED rating (v 2.0.)
2Exterior View looking north toward the school. Color of building resembles local soil colors.
3View of the front of the middle school View of the front of the middle school. This is the north side and therefore no light shelves are used.
4South side of the building South side of the building. Light shelves are blocking solar gains on this sunny, warm day.
5This view shows the west side of the school This view shows the west side of the school. Yellow fins block some of the late afternoon solar gains. On the roof, the light tubes and the wind turbines for the natural ventilation can be seen.
6Inside the hall on the west side of the school shows the yellow fins blocking some of the late afternoon sun.
7The color wall theme is continued within the interior of the building The color wall theme is continued within the interior of the building. The indirect light fixtures contain T5 lamps.
8This view is from an interior classroom hallway This view is from an interior classroom hallway. The clerestory allows daylight to illuminate the hall.
9Daylight from the classrooms illuminates the hallways Daylight from the classrooms illuminates the hallways. Note: the T5 lamps are off.
10Light tubes are found in all of the first and second floor classrooms Light tubes are found in all of the first and second floor classrooms. The acrylic lens diffuses the light and evenly illuminates the area.
12Light tubes are also used in the media room Light tubes are also used in the media room. The light fixtures and daylight provide a very uniform light level within the room.
13Motorized light shades allow for reducing interior light levels.
14This photo shows the effectiveness of the interior and exterior light shelves. The solar gain in minimal due to shading of the lower window while the reflected light from the upper window is high. Note the high level and fairly uniform light levels throughout the room despite the artificial lights being turned off.
15North-facing classroom has windows without light shelves contribute a large amount of natural daylight.
16The skylights in the gym provide a large amount of daylight The skylights in the gym provide a large amount of daylight. The gym was painted before the artificial lights were installed.
17The ducts in the gym are made from cloth The ducts in the gym are made from cloth. The small perforations allow for uniform distribution of air. The ducts can be cleaned when the school district notices that they are dirty (unlike metal ducts).
18The cafeteria/auditorium has daylight entering from the east side of the building.
19Mechanical RoomIf the natural ventilation can not maintain classroom temperature, then water from the de-watering well (see case study for explanation), cools the water that is circulated to the ventilation fans.
20To heat the building, these heat pumps extract heat from the de-watering water to heat the hydronic water loop. To cool the building after the cooling capacity of the natural ventilation and the cool water from the de-watering system has been exceeded, the heat pumps reduce the temperature of the chilled water loop (by transferring heat from the chilled water loop to the de-watering water).
21Another view of the heat pumps Another view of the heat pumps. Note: the de-watering water is 62°F year round and flows at a rate of 120 gallons per minute.
22This small 97 percent efficient boiler provides the heat for the restrooms and kitchen. In addition, it provides supplemental heat should the heat pumps fail.