Glass, Windows, & Shades
Fritted glass (small dots or thin lines) is used in the windows of the Sports & Recreation Center. The process of silk-screening ceramic frit onto glass, combined with clear or tinted glass substrates, as well as high-performance coatings, can help reduce solar heat gain. Ceramic frit paint is comprised of minute glass particles, pigment, and a medium to mix the glass and pigment together. The paint is applied to one side of the glass – either heat-strengthened or fully tempered to prevent glass breakage due to thermal stresses under sunlit applications – and is fired in a tempering furnace to create a permanent coating.
This process allows the glass to admit daylight while preventing transmission of solar heat. By controlling solar heat gains in summer, preventing loss of interior heat in winter, and allowing occupants and building owners to reduce electric lighting use by making maximum use of daylight, this glass significantly reduces building energy consumption.
The interior shading system in the Sports & Recreation Center helps to increase the building’s environmental, economic, and energy efficiency. The design provides significantly more protection from the radiant component of sunshine by filtering the sunshine while providing a view to the outside. These shades provide improved occupant protection from glare and brightness, reduce glare and reflection problems on CRT screens, and provide excellent see-through capability. In addition, they increase the use of natural daylight, reduce solar heat gain, and reduce air conditioning loads.
The woven stainless steel screens attached to the exterior west side wall of the Sports & Recreation Center allow filtered light to pass through to the building interior, shading an excessive amount of sunlight. They also reduce some glare inside the building, improving the interior light quality. Using these sunscreens allows heat to be absorbed by the stainless steel mesh before it reaches the interior of the building where less energy is needed for room temperature control. The lighting and temperature controls of buildings account for approximately 50% of the fossil fuel consumed in developed economies and thus contribute heavily to global warming.
The architectural mesh is readily recyclable and is manufactured from recycled materials, and it has a virtually maintenance-free and indestructible lifecycle. The manufacturing process used to create these mesh shades is a cold forming process, which generates less environmental impact than the process of heat-treated products.
SUNSHADING EXTERIOR MULLIONS
Exterior mullions (window framing) are strategically placed on the east and south exterior walls of the Sports & Recreation Center. They allow for maximum day lighting while minimizing direct sunlight penetration into the building and reducing solar heat gain and resulting interior energy usage. Computer modeling analyzes the path of the sun as it shines onto the building and determines whether deeper vertical or horizontal mullions will shade the building best on different sides of the building, depending on the exposure from the path of the rising and setting sun. In addition to blocking the solar heat gain, they also help to reflect sunlight deeper into the building, which increases day lighting and reduces the need for artificial light.
The exterior mullions are manufactured regionally, and the aluminum used in these mullions contains recycled materials, therefore reducing the impact resulting from extracting and processing of virgin material.