Berner International Corp. has introduced a patented Venturi-style heater design, which the company says will offer a more aerodynamic, electric heated air curtain with improved air performance efficiency by up 40% The VTH electric heater combines a hemispherical heating element array with an innovative mounting strategy at the blower inlet. The patented design uses the Venturi effect to draw air through the heating element via the blower inlet before it enters the discharge airstream. The discharge airstream velocity remains unobstructed in a near 100% efficient heat transfer, full laminar pattern for an optimum aerodynamic performance. Company officials said that this creates a near perfect environment-separating air seal across any open doorway while providing auxiliary heat, as needed.
Berner International Corp. has added single-length 7-, 8-, 9-, and 10-ft long models to its ANSI/NSF 37-certified E-Zone and K-Zone (EZN and KZN Series) air curtains designed for energy savings and flying insect control. The EZN and KZN Series are now available in nine widths ranging from 3 ft to 10 ft, which the company says eliminates the inconvenience and mismatches of combining smaller sizes to create a longer air curtain.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.