Technical

How Sensor And Gauge Accuracy Impact Chiller Efficiency

December 26, 2005
The adage "garbage in equals garbage out" holds especially true when determining chiller performance. If your sensors haven't been calibrated in the last year and are over three years old, the odds of them being inaccurate are almost 100 percent.
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Criteria For Refrigerant Selection

December 12, 2005
This article has been excerpted from a comprehensive white paper, "Refrigerants for Commercial Refrigeration Applications," issued by Copeland Corp., part of Emerson Climate Technologies. The article focuses on the criteria for refrigerant selection, including discussion of the transitional refrigerants (HCFCs), chlorine-free refrigerants (HFCs), and halogen-free refrigerants.
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Ladder Safety Tips

November 23, 2005
Ladders are such common everyday tools that many workers take them for granted. The two principal causes of ladder-related injuries are using the wrong ladder for the job and misusing or abusing climbing equipment.
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Filters And Air Contamination In A Building

November 11, 2005
A properly functioning air filter system provides cleaner and safer air to building occupants. It also makes the HVAC system operate more efficiently and extends equipment life. This article provides details on air filter systems.
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Thermal Energy Storage: Looking Back 15 Years

October 28, 2005
Thermal energy storage is an energy conservation tool as well as an environmentally friendly and economically attractive alternative to new electric generation capacity. The installation highlighted in this article provides more information about its benefits.
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U.S. Coast Guard Demonstrates Successful Fuel Cell

October 14, 2005
Through the use of a fuel cell at Air Station Cape Cod, by utilizing the unit's recovered heat for domestic hot water use, the station gained a total net savings of almost $24,000 in operating expenses over the course of a year.
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Using Industry Software To Manage And Grow Your Business

September 30, 2005
Many contracting companies are turning to scheduling and dispatch software and wireless technology to help them make their businesses more profitable. Here's an example of how one contractor made the move.
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Pressurization Of Closed Hydronic Systems

September 18, 2005
Most modern hydronic heating and/or cooling systems are closed systems that must be maintained at some minimum pressure. This would seem to be a simple concept, but it is surprising how often a lack of attention to the basics can cause all kinds of problems.
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Laying Out Rectangular Duct Transitions

August 30, 2005
Transitions are needed in almost every duct run to change the size or shape of the ductwork. This article explains how to lay out rectangular transitions.
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How To Increase Efficiency, Reduce Maintenance, And Improve IAQ With UV

August 20, 2005
Mold spores are encountered everywhere. When they find the right environment, they'll multiply to the point of affecting HVAC performance and possibly occupant health. But there is a cost- and energy-efficient way to eliminate mold growth in HVAC systems - ultraviolet (UV) germicidal lamps.
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