The sport of curling is a strategic game like chess, with an element of skill and experience. Played on ice in an indoor controlled environment, temperature and humidity are critical to setting ice speed and the amount of “curl” the stone will incur.
Greenheck’s new Model AFJ-601D stationary acoustic louver is Florida Building Code approved and Miami-Dade qualified for use in the Wind-Borne Debris Zone. Featuring a 6-in deep J blade, the AFJ-601D is designed to restrict the transmission of high and low frequency sounds generated by mechanical equipment and to act as an exterior weather louver.
Pottorff is has introduced its new EXA-645 combination louver. The company says it is a high-performance louver with Best-In-Class AMCA certified performance for free area (50.4%) and a pressure loss of 0.15 in. wg. @1,272 fpm (6.46 m/s). The EXA-645 features stationary drainable louver blades that protect against water penetration along with an integral airfoil blade control damper which will allow for positive shutoff protection from air intake and exhaust openings.
The latest version of the Pottorff ECD-545 5-in horizontal blade, wind-driven rain louver comes with updated AMCA CRP ratings. The louver now has a Class A rating at a core velocity of 886 fpm for the 29 mph, 3 in/hr simulated AMCA Wind-Driven Rain Test.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.