Commercial building owners and property managers have been able to remotely access their facilities over the Internet for many years. Now that same kind of remote control technology is coming to the residential market, as manufacturers are beginning to offer thermostats that can be accessed via the Internet.
New officers of the Mechanical Service Contractors of America (MSCA) board of managers were introduced on the final day of the MSCA 24th Annual Educational Conference at the Hyatt Regency Coconut Point.
The phaseout of ozone depleting refrigerants has impacted air conditioning and refrigeration equipment design in many ways. One of the most significant changes to these systems is the transition of the compressor lubricants. Use of an appropriate lubricant is important when servicing, installing, or retrofitting a system.
What is the best retrofit blend for HCFC-22? Technicians and equipment owners are asking this question more often as we approach the next step down in the production of R-22. It sounds like a simple question, yet the answer will depend on several key factors. First, there is a fundamental difference between air conditioning and refrigeration.
When I found out that nobody from The NEWS was attending the SMACNA Convention in October, I suggested to Mike Murphy that perhaps he would like to have me file a report. I should have known when he answered “Yes” so quickly that maybe it wasn’t going to be as easy as I might have thought.
Hill Phoenix has announced a “strengthened commitment” to GreenChill, the cooperative alliance among the Environmental Protection Agency, the supermarket industry, and manufacturers of refrigeration equipment and coolant gases.
The problem we are going to deal with here pertains to a restricted liquid line after the receiver. Provided is a service checklist. Assume that the refrigeration system is a TXV/receiver system, employing a filter drier and sight-glass. The system has R-134a as the working refrigerant.
There are several ways we can get answers to our questions. The easiest way is to just ask someone who has more experience with the system or component. However, if an answer does not make sense or is unclear, we should not just simply accept it as fact, but should ask it again or ask “why.”
More and more projects are looking beyond F-gases for refrigerants. Among the options are ammonia (R-717) and CO2 (R-744). Or - as in the case of a foodservice distribution center in Kitchener, Ontario - both. Flanagan Foodservices completed an expansion, most of which was a freezer that used technology new to Canada.
Mixed signals continue to be sent out regarding shipment data for heating and cooling equipment. The most recent statistics from September showed shipments of residential gas water heaters up 7.4 percent compared with September 2008, while shipments of gas-fired, warm-air furnaces fell 2.5 percent in September.
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