Yearly Archives: 2011

Building Information Modeling (BIM)

Many times we hear the term BIM. But what does this mean? When an owner asks if the project is going to be done in BIM, what is he really expecting? The AIA has a document, E202-2008 “Building Information Modeling Protocol Exhibit”, which provides a standard outline for the use of BIM information by a

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Retro-Commissioning Results

The graph demonstrates the results of retro-commissioning for one rooftop unit. The retro-commissioning authority found improper damper operation in economizer mode. Instead of fully opening the outdoor air damper to provide free cooling, the actuator fully closed the outdoor air damper and provided 100% return air to the space. Mechanical cooling was required at an

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Chilled Beam HVAC Systems

For many years, chilled beam systems have provided space conditioning to buildings throughout Europe and Australia, but the technology has been slow to catch on in the United States. However, that trend is changing as the system has reported benefits of superior comfort and substantial potential energy savings for little or no additional cost when

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LED Lighting

What’s with LED Lighting? If you are in the design, construction, or facilities management business you are probably getting inundated with questions about LED lighting. If you looked into LED’s a year ago, you were probably disappointed in the options available, light output, cost, etc. Commercial lighting applications utilizing LEDs as a light source have

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Trends in Chiller Technology

Chillers have been the workhorses of building cooling systems for decades. In recent years, a renewed focus on energy efficiency has led to new and renewed trends in the chiller equipment market such as: Magnetic Bearing Compressors: With this breakthrough technology, the compressor impeller shaft is levitated by a magnetic field. The result is a

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Emergency Showers and Eyewashes

Emergency showers, eyewashes and drench units are common equipment in hospitals, laboratories, science classrooms, maintenance shops and anywhere hazardous chemicals are handled. OSHA regulations require “Where the eyes or body of any person may be exposed to injurious corrosive materials, suitable facilities for quick drenching or flushing of the eyes and body shall be provided within

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Heat Pumps Ideal for Swing Months

Spring is upon us and so is the unpredictable weather; a warm summer-like day next to a frigid, blustery cold day, sound familiar? As we get into spring and into those swing days before air conditioning systems are completely commissioned and operational from the winter shut-down, some systems are caught unprepared for the unseasonable temperatures

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Energy Benchmarking

Approximately 40% of all US energy used in the United States is consumed by buildings making it the largest single category of energy use.   If you are responsible for operating or maintaining one or more buildings, you have some experience in budgeting for the energy usage required to keep your buildings operating.  You may have

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