The 21st annual Energy Efficiency Forum featured keynote speaker Gary Locke, secretary of the U.S. Department of Commerce. Locke emphasized the need for the U.S. to aggressively pursue, and become a leader, in clean energy development.
Advanced packaged rooftop units (RTUs) are emerging with higher efficiencies and additional features designed to save energy off-peak and improve reliability. Features include improved fans and economizers; better controls for the fan, refrigerant cycle, and economizer; and advanced monitoring and diagnostics.
The dispatcher calls Bob with an urgent service call from the city’s convention center. A convention is going on and the air conditioner is off, and it re-starts but only runs a short time and shuts off again. The maintenance man said he had to reset the high pressure control to get it started. Btu Buddy assists in troubleshooting the system.
With the passage in Arizona of a controversial immigration-related state law and possible federal immigration reform legislation, it is possible we may soon be seeing more immigrants’ rights demonstrations. The economic impact of employees missing work to participate is obviously a legitimate concern.
Researchers at Oregon State University and the Pacific Northwest National Laboratory announced that they have discovered a new way to apply nanostructure coatings to make heat transfer far more efficient, with important potential applications for high-tech devices as well as for heating and cooling.
Anyone whose job involves servicing electric motors has encountered the problem of a missing nameplate. Other articles in the Motor Doctor series have covered ways of determining the specifications of a motor lacking the nameplate, but what if you are trying to figure out how to wire that motor?
HVAC contractors can take a cue from Orville Redenbacher, one of the most popular popcorn brands in the United States. In the marketing of your company’s brand, you might consider stepping front and center and let consumers know that you personally stand behind your company’s products and services.
V-belt drive misalignment exists when the driver and driven sheaves are not properly aligned. Misalignment can take either the form of angular or parallel (offset) misalignment, or a combination of both. Ideally, you want to have both parallel and angular harmony.
The Gas Technology Institute (GTI) has announced the opening of its Combined Heat and Power (CHP) & Renewable Energy Laboratory to provide greater capabilities for developing a wide variety of highly efficient renewable energy technologies such as solar thermal products.
Chilled beam systems provide savings by replacing fan energy with pump energy. They use pumped chilled water instead of blowing cold air. Water has much higher heat capacity, both by mass and volume. In typical pump and fan arrangements, this has been shown to translate into a reduction in fan energy by a factor of seven.
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