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Archives
What’s a Watt? (And Other Electrical Fundamentals)
Posted by Mike Ruff on in Fundamentals
Basic electrical calculations involve three parameters, volts, amps and watts. Volts Here in the United States, we design according to specific voltages provided by our utility companies. In residential construction, we often have 120/240V, single phase, 3-wire, while in commercial construction we typically have 120/208V, 3 phase, 4-wire or 277/480V, 3 phase, 4-wire (although older […]
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Central Air Adds LEED Points
Posted by Bob Schneider on in Energy Solutions
Developers are showing increasing interest in central air conditioning for many reasons. Ideally suited for multi, multi-use dense, vertical developments, central air conditioning reduces energy use by 30–50%, helps earn LEED points, eliminates rooftop condenser “farms” that preclude green roof options and become maintenance nightmares, and generates revenue. Central air conditioning systems have smaller footprints […]
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Central Air Adds LEED Points
Posted by Bob Schneider on in Energy Solutions
Developers are showing increasing interest in central air conditioning for many reasons. Ideally suited for multi-story, multi-use dense, vertical developments, central air conditioning reduces energy use by 30–50%, helps earn LEED points, eliminates rooftop condenser “farms” that preclude green roof options and become maintenance nightmares, and generates revenue. Central air conditioning systems have smaller footprints […]
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Can I Use a Curb Adapter?
Posted by Bob Schneider on in Facility Operations
A contractor or Tenant field rep calls you up and asks this question. What do you say? First off, what is a curb adapter? This definition can mean something different to everyone. Often when an HVAC unit is being replaced, the new unit does not identically match the existing curb size and drop locations. A […]
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Cleaning Plate and Frame Heat Exchangers
Posted by Bob Schneider on in Engineering
Central Plants may utilize plate and frame heat exchangers for “free cooling” or other types of heat transfer. Maintenance of your plate and frame heat exchanger should be part of your scheduled service program. The plate exchanger, shown below, consists of corrugated plates assembled into a frame. The hot fluid flows in one direction in […]
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