Technical

The Benefits of Ice Thermal Storage

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Cooling with ice thermal storage can be the most cost-effective, reliable system approach to cooling offices, schools, hospitals, malls, and other buildings. These systems are also environmentally friendly because they help lower energy consumption and reduce greenhouse gas emissions.
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Measuring Duct System Performance

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It is important to verify correct control of an HVAC air system. A balanced supply and exhaust will help ensure proper ventilation by meeting minimum air exchange rates, removing airborne contaminants, and reducing operating costs.
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Refrigeration Fault Detection and Diagnosis

By Max Robinson
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Research has led to new ways for analyzing and using sensor information, and we now have algorithms to predict with some certainty when a specific kind of equipment malfunction will occur.
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Are Open Standard Protocols Still Smart Investments?

By Amy Momsen
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This article reviews the reasons open standard protocols were, and still are, desirable, as well as the benefits we had hoped to realize from their successful application. Most importantly this article describes how you can assist the building owner in attaining many of the expected benefits from an open standard protocol.
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Fan Safety

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HVAC technicians work on fans in many ways. They install fans, measure fan performance, and adjust fan speed. This article provides important advice on how to work safely with fans.
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Using Air Intake Filtration to Optimize School IAQ

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On air-handling units, air intake filtration increases the life of internal filters. On air-cooled chillers and condenser coils, it prevents debris from getting into the coils. On cooling towers, it isolates debris on the outside of the tower.
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What Happens When a Building Turns Green?

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Typically, green buildings save close to 30 percent of the energy and 50 percent of the water that buildings of comparable size waste. Those occupying these buildings claim improved health and lower utility bills.
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Keeping Cool With Outdoor Air: Airside Economizers

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This article reviews ASHRAE Standard 90.1's requirements for airside economizers and discusses the underlying design decisions and benefits of effective airside economizer systems.
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Advantages of Closed Circuit Cooling Towers

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A closed system protects the quality of the process fluid and reduces system maintenance at a slightly higher initial cost. When deciding which system is best for an application, several factors should be considered.
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The Impact of WEEE and RoHS on the U.S.

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It's been demonstrated many times that after Europe introduces environmental regulation, similar action often occurs in the United States. This article explains WEEE and RoHS, and how they are already impacting the U.S. market.
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2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

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NEWSMakers: Joseph Groh

Joseph Groh, an industry veteran boasting 35 years of HVAC experience, discusses the 2008 bicycle accident that cut his career tragically short, and how the Joseph S. Groh Foundation is his way of giving back to the construction trade. Posted on Aug. 22.

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2014 August 25

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Prohibiting HFCs

EPA is proposing a rule that would prohibit some HFCs in select refrigeration applications. Do you agree with this move?
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2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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