When it comes to CO2, what goes around, comes around. Carbon dioxide as a refrigerant was popular from the late 1800s to the 1930s, before giving way to CFCs. CO2 is now the subject of renewed interest.
In mid-March, the U.S. Environmental Protection Agency (EPA) published a letter on the subject of “Use of Disinfectants and Sanitizers in Heating, Ventilation, Air Conditioning, and Refrigeration Systems.”
If the 1,400 contractors, technicians, and manufacturer reps who make up the membership of the Refrigeration Service Engineers Society (RSES) of Canada want to adopt a theme for the year ahead, one suggestion focuses on safety.
Many service technicians troubleshoot refrigeration and air conditioning systems on a daily basis. Learning the most efficient methods of troubleshooting not only saves the service technician’s time, but also the customer’s money.
The general didn’t pull any punches. At the Gas Appliance Manufacturers Association’s (GAMA’s) recent annual meeting, members were privileged to hear retired General Dennis J. Reimer’s remarks on the state of terrorism readiness in the United States today.
Just because a building is given a clean bill of health doesn’t mean that the cleaning process ends. “The work doesn’t end when remediation is over,” said Steve Ashkins of Healthy Housekeeping Solutions.
Sizing walk-in coolers and freezers generally is not a difficult procedure. Many reference charts list the required refrigeration loads for different size walk-ins. Generally, they provide two load estimates — one for average usage and one for heavy usage.