| |
NEW TECHNOLOGIES SAVE ENERGY & WATER FOR
DEPARTMENT OF DEFENSE |
|
The DOD is on an important mission: save energy, water, and other waste from its buildings…about 500,000 structures in all. Metal Construction Association reporting for duty!
|
 |
| NEW WEAPONS IN THE FIGHT FOR EFFICIENCY |
The Department Of Defense, with help from MCA, has evaluated a variety of technologies to help reduce energy and water needs in its buildings. These technologies include:
| • |
Retrofit Metal Roofing System: Installed over the existing roofing (thus reducing landfill waste), these roof systems create a “plenum” or space between the existing and new roofs for additional insulation, or solar thermal heating and cooling of air and water for the building. |
| • |
Solar Thermal Water Collector: Installed below the retrofit roofing system, the solar thermal water heating system is a closed loop indirect, glycol protected system. Solar radiation from the outer surface of the retrofit roof heats the heat transfer medium which is used to preheat domestic hot water in an auxiliary hot water tank. The solar preheating of water reduces the use of fossil fuels or electricity. |
| • |
Solar Thermal Air: The heat exchange in the solar thermal system can also be used for space heating of air in the HVAC system within the building space. This offsets the use of natural gas for air heating. |
|
|
 |
| • |
Metal Roof With Cool Finish Coating: Cool metal roofing with high solar reflectance can save up to 40% in summer cooling energy costs. Plus these roofs are manufactured from steel with a minimum of 25% recycled content. Once installed, these roofs are 100% recyclable. Cool metal roofs can help a LEED-registered project to get points for energy savings and for heat island mitigation. |
| • |
Rainwater Harvesting System: This includes gutters, leaders, filters and tanks integrated into the retrofit roof system. These custom systems are larger and more sophisticated versions of the turnkey systems used for domestic applications. The above-ground cistern system effectively captures, manages, and reuses rainwater for non-potable applications such as watering landscaping or flushing toilets. |
| • |
Solar Electric (PV) Panels: The thin film solar panels are laminated to the roof panels, providing energy for the building and even allowing electricity to be sold to the grid. The laminated PV panels contribute to the solar radiation heat used by the solar thermal water heating system below the outer roof surface. |
 |
 |
| A METAL OF HONOR |
|
Atten-TION! Here’s your chance to be a hero on your next architectural project. Investigate the integration of some or all of these new technologies and bring them to your new buildings and/or metal roof retrofits alike. MCA is at the ready.
|
|
|
|
|
| |
