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Smart Computing Article - Modems

October 2005 • Vol.9 Issue 6 Add To My Personal Library Problem: My cable modem seems to have trouble making connections during bad weather. Part of the cable connection from the curb to your modem runs along the outside of your house. This means the wire is sitting outside, getting worn down by the elements. Connection problems during poor weather are a key indicator you may have a worn cable on the verge of failing. Call your cable company and ask them to send someone out to inspect it. Problem: I
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Products & Services
Variable Air Volume (VAV) Units
Variable air volume (VAV) units are manufactured assemblies of air valves and dampers contained in a single enclosure. As HVAC system components, they regulate airflow to a room or zone in response to a thermostat or other signaling device.
Tubular Heaters
Tubular heaters are generally used in custom heating applications. Base (tubular) heating elements can be bent into standard or custom shapes.
HVAC Ductwork
HVAC ductwork includes pipe or closed conduits made of sheet metal, fiberglass board, or other suitable material for conducting air to and from an air handling unit.
Air Heaters
Air heaters are devices used to heat air.  They include forced air products as well as all types of radiant and space heaters.
HVAC Fans and Blowers
HVAC fans and blowers are used to move air through heating, ventilating, and air conditioning (HVAC) systems. They are an integral part of the air handling systems that bring or draw fresh air into buildings.
Product Announcements
Rosenberg USA - See Video - Modbus Fans Greatly Reduce Power Usage
Rosenberg electronically commutated (EC) fans with built-in Modbus controls increase fan efficiency and significantly reduce power consumption. They are available in axial and backward-curved radial... (read more)
Rosenberg USA - Rosenberg Backward Curved EC Fans Now In 10 Sizes
High-efficiency Rosenberg backward curved fans with single-phase electronically commutated (EC) motors are now available in 10 sizes from 250 to 710 mm (10 to 28 inches). These fans deliver up to 6.75... (read more)
Rosenberg USA - Rosenberg HVAC OEM Axial Fans With Winglets
Rosenberg USA has expanded its OEM AC axial fan range to include winglet-bladed models up to 40 inches in diameter. Rosenberg AC axial fans with winglet tips are now available in five sizes from 22... (read more)
 
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4.8 Duct Sizing Duct-sizing considerations for cold-air distribution systems are essentially the same as those for conventional designs. The reduction in supply air volume offers the designer more...