This service call is for a routine checkup on an old 7½-ton unit using R-22. The call is going well until the owner mentions to Bob that the unit has actually never cooled well. Bob then proceeds to do a complete check of the system with Btu Buddy’s assistance.
Where should you look for the best examples of large-scale, energy-efficient green building today? Not the United States. Instead the greenest new buildings on the planet are located in Europe. “The Europeans are now the leaders,” stated American green building consultant Jerry Yudelson.
A critical element of motor servicing technique is being able to determine whether or not a replacement motor that is not an exact duplicate of the original is suitable for the application. As a technician, you must consider a number of factors, but this article focuses on one of the more important issues: nameplate amps.
DuPont has announced plans with the U.S. Department of Energy (DOE) for a $9 million solar research program. The program is designed to accelerate commercialization of a protective film that prevents moisture from degrading the performance of thin-film photovoltaic (PV) modules, a key challenge in the past.
A fundamental truth that applies to improving employee job performance is that the degree of success improving any outcome, including the functioning of an HVAC system and employee job performance, is determined by whether all relevant interventions are used to achieve the desired improvement.
Bob receives a call from the dispatcher telling him about a restaurant that is having difficulties. When he gets on the roof at the restaurant he notices that the unit's fan motor is turning, but seems to be very slow. As he approaches the condensing unit, the fan stops. With Btu Buddy's help, Bob diagnoses the problem.
It may sound like the plot from a science fiction movie - through genetic testing, someone finds out she may develop a serious disease, her company finds out and fires her, and she can’t get health insurance because of this future health risk. Congress, though, took steps to ensure this scenario does not become reality.
Imagine a lightweight, flexible material that effectively insulates pipes in steam distribution systems. You don’t have to imagine anymore. With DOE assistance, Aspen Aerogels developed insulation that provides the same insulating capabilities as conventional products, but with up to five times less material.
TKDA, an employee-owned engineering, architecture, and planning firm, has received a national award for its design of an innovative, environmentally friendly steam generating facility for Andersen Corp. The award was given by the American Council of Engineering Companies (ACEC) at an event held in Washington, D.C.
Space heating and lighting consume most of the energy in non-refrigerated warehouses. Installing more efficient lighting to save energy has been well documented by computer modeling. But what about space heating? This article summarizes an energy modeling analysis showing energy performance for six types of gas-fired heating systems commonly used in warehouses.