Providing the most efficient link between contractor customer and its distribution operation was the goal. Even for those customers who were "technologically challenged," this distributor wanted to develop a simple computerized system that would provide immediate pricing updates and easier ordering.
School districts in California and throughout the U.S. are increasingly using relocatable classrooms (RCs), also known as modular or portable classrooms. A study was conducted that demonstrates technologies that can simultaneously improve energy efficiency and indoor environmental quality in RCs.
ABB is applying its patent-pending Swinging Choke technology "to reduce harmonics at partial load, making an essentially efficiency-driven solution that much more efficient."
An estimated one sixth of all steel production worldwide is used to replace corroded metal - much of it at cooling and process water piping systems. This article details the benefits and drawbacks of using corrosion coupons.
Commissioning starts by preventing errors in the most critical, early stages: planning and design. After the ground is broken, the process checks for correct installation and start-up. Only the next two stages, functional and performance testing, check for incorrect operation.
What is the homeowner's No. 1 complaint regarding his HVAC system? It's downtime. What is the No. 1 cause of downtime? Other than poor maintenance or old age of the equipment, the leading cause is power quality.
A VFD bypass assures the customer uninterruptible operation with their HVAC system - the ability to keep their fans and pump running at all times - even if the drive is taken out of the loop for whatever reason.
Moisture indicators on HVACR systems have been billed as critical early-warning components in the fight to cut the long-term effects of water damage and reduce repair and maintenance costs. But do they truly live up to their billing?
The heart of both an electric refrigerator and an air conditioner is the compressor, its most costly component. No other electromechanical device comes close to the reliability of the semi-hermetic or fully hermetic compressor.
Building diagnostics is a practical methodology that enables HVAC professionals to verify and document to customers that installed systems are meeting defined performance criteria, or, if the criteria are not being met, to indicate that interventions are needed to regain performance.
Photos from the 2013 ACCA Conference & IE3 Expo in Orlando, Fla.
Podcasts
Cade Clark, assistant vice president of government affairs for the Air-Conditioning, Heating & Refrigeration Institute (AHRI), gives a brief overview of the new version of the Shaheen-Portman bill, what AHRI thinks of the energy-efficiency legislation, and how it might affect the HVACR industry if it becomes law.
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