Technical

How a DDC System Operates

December 8, 2008
Every manufacturer of an HVAC digital control system uses the DDC to perform pretty much the same functions. The catch is that each DDC system has different ways of letting you use these functions. If you are used to operating computers, you have the basic knowledge required.
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The Benefits of Clean Air

November 17, 2008
Exposure to fine particles impairs breathing and increases the risk of serious illness. So, what is the best way for a person to reduce their exposure to fine particles of outdoor origin? The answer is to lower the concentrations of these fine particles that seep from the outside into the indoor air of their home.
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Replace V-Belts With Cogged or Synchronous Belt Drives

November 3, 2008
About one-third of the electric motors in the industrial and commercial sectors use belt drives. Belt drives provide flexibility in the positioning of the motor relative to the load. However, certain types of belts are more efficient than others, offering potential energy cost savings.
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The Importance of Benchmarking

October 20, 2008
Whenever the seasons change and your work changes from cooling to heating or vice versa, take a minute to review which of your measurement practices result in the greatest payback. On the technical side, surely one of the very best practices is benchmarking.
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Survey Respondents Say Drill More, Pursue Alternative Energy

October 6, 2008
This year as the price of oil and gasoline sharply rose, the impact of high energy prices weighed heavily on the United States economy. To find out how readers feel about the energy issue, an informal online survey was conducted on The NEWS Website, keying on oil drilling and renewable energy.
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Field Modifying Fittings and Duct

September 22, 2008
Field modifying fittings and duct can save time and money. If you install residential ductwork on a performance basis (X number of dollars for the job) as I do, it is sometimes a real benefit. You have to know how fittings are made before you can alter them.
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How an Open Building Automation System Cuts Costs, Increases Flexibility

September 8, 2008
Having a specification that allows for any system option and protocol leads to a more complex system, one that is more cumbersome to install, commission, and maintain. It is recommended to pick one common protocol for the entire building control system infrastructure. Costs go down and maintainability goes up.
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The Key Role of Retrocommissioning in Building Sustainability

August 18, 2008
The concept of sustainability has gained interest in direct proportion to the recent increases in energy costs. There is a frequently overlooked initiative that can have the most significant impact on reducing energy usage in buildings and can set the stage for future efficiency initiatives: retrocommissioning.
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Whole Building Design

August 4, 2008
Designing, constructing, or renovating high-performance buildings requires a whole building approach. This differs from the traditional design/build process, as the design team examines the integration of all building components and systems and determines how they best work together to save energy and reduce environmental impact.
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Improving School Environment and Performance

July 7, 2008
Green school programs are touted mainly for saving energy, but research at the Georgia Tech Research Institute (GTRI) indicates that bettering a school’s indoor environment also increases health and comfort, which in turn promotes increased attendance, student attentiveness, and teaching effectiveness.
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