As the world of refrigeration moves away from traditional CFCs and HCFCs toward more environmentally friendly alternatives, the use of ammonia refrigerants has been gaining in popularity and trending upwards.
Have you worked with R-407A in refrigeration jobs? The mechanical design company Henderson Engineers Inc. (HEI) of Kansas City has in such a project where it was given the task by a major retailer to improve the carbon footprint of a supermarket refrigeration system.
While the word “refrigerant” isn’t normally the first thing one thinks of when Thailand is mentioned (can you say “Pad Thai” or “Tom Yum soup”?), interestingly the two intersected at an event.
When mechanical refrigeration came along, refrigerants such as sulfur dioxide and ammonia and the fluorocarbons were introduced. The latter two — ammonia and f-gases — are still being used. Of the fluorocarbons, the choices were pretty simple: CFCs -11, -12, and -502. It is not so simple these days.
Available as either air-cooled or water-cooled, the models of ice-only Symphony™ ice and water dispensers have expanded. These new ice-only models are extensions of the 25CI and 50CI Series.
The Electronic Unit Controller is designed for Copeland® condensing units with low-pressure controls. According to the manufacturer, electronic pressure-sensing accuracy maintains a tighter low-pressure control tolerance.
New Hampshire contractor Steve Berger is — like the state he lives in — somewhat of a nonconformist by his own admission. What does he do differently and how does he make it work?
A flurry of recent announcements is signaling some new directions for controllers that can be used in refrigeration applications. See what some of these new announcements and products have to offer.
Properly sizing and installing the suction line of a refrigeration system is very important to its overall operation. What happens when they aren’t installed properly and how can you avoid this?
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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