Metalaire has released its Non-Ducted Return Hood. The Model NDRH is intended to be a field added accessory to return grilles in non-ducted plenum applications. The company claims the model significantly reduces the amount of sound transmitted into or from the plenum and also functions as a light shield.
Nortek Global HVAC has launched a new 3-phase large packaged gas/electric system in 2 to 5 tons for light commercial use. Model R8GE delivers energy-efficient 14 SEER cooling in advance of new federal efficiency standards that will take effect on January 1, 2017.
Bradford White Water Heaters has launched its ElectriFLEX™ HD (Heavy Duty) field convertible commercial electric water heaters. The new ElectriFLEX™ HD models join the ElectriFLEX™ LD (Light Duty) and ElectriFLEX™ MD (Medium Duty) products to complete the full line of Bradford White convertible commercial electric water heaters.
According to Greenheck, its new fully programmable energy management motor starter, Model MSEM, can be specifically adapted to the user’s needs. Available for single-phase (up to15 hp) or three-phase (up to 300 hp) commercial or industrial applications, Model MSEM features a Hand/Off/Auto keypad with LCD display to easily adjust settings.
Greenheck introduced the Model AFL-501, a 5.5-in deep, severe duty aluminum louver that protects exterior wall penetrations on FEMA 361 or 320 compliant storm shelters or safe rooms. According to the company, the Model AFL-501’s design incorporates inverted V-style blades that lend high free area, excellent resistance to water penetration and very low airflow resistance, while providing maximum protection against extremely high wind loads and wind-borne debris.
B&K Precision is offering three new models of its high power programmable DC power supplies, models PVS10005, PVS60085, and PVS60085MR. The new PVS Series delivers output power up to 5.1 kW. The company says they deliver excellent regulation, low noise, and fast transient response times. All models provide a built-in solar array simulator (SAS) function to generate photovoltaic I-V curves. Offering high-power density in a compact 2U form factor, these DC power supplies are suitable for high voltage testing up to 1000 V, motor inverter testing, and solar array testing applications.
Greenheck has expanded its line of mixed flow inline fans with the addition of Model EQB. According to Greenheck, the fan combines the best properties of centrifugal and vane axial fans while providing higher efficiency and lower sound levels. Model EQB’s octagonal housing is manufactured of formed galvanized steel panels coupled with a heavy-gauge steel drive frame for and durability.
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.