The company subjected the refrigerants to intensive testing
May 2, 2016
Compressor manufacturer Bitzer has approved the hydrofluoroolefin (HFO) refrigerants R-1234yf and R-1234ze(E) for its CSH and CSW screw compressors. The two alternatives to R-134a have a global warming potential (GWP) of less than 10.
Ninety percent of compressor failures can be attributed to problems found elsewhere in the system. And, serious consequences can result if technicians don’t determine the true source of the compressor failure.
A common complaint throughout the HVACR industry is that when new technicians enter the industry, they don’t have the skills and knowledge that employers expect. One area where this is evident is in the field of compressor service.
S-RAM Dynamics to produce system using new CO2 energy recovery compressor
March 16, 2016
The U.S. Army Natick Soldier Systems Center (NSSC) has awarded S-RAM Dynamics a Small Business Independent Research (SBIR) Phase 2 contract for $1 million to build and test a mobile refrigeration system demonstration prototype using the new S-RAM energy recovery compressor that utilizes CO2 refrigerant.
Climate control industry veteran succeeds Harold Karp
March 15, 2016
Tecumseh Products Co. announced that Harold Karp has stepped down as president and CEO of the compressor manufacturer. He is succeeded by Doug Murdock, who most recently served as president of the Climate Products Group at Mueller Industries Inc.
As the DOE mandates minimum efficiency performance and the EPA delists ozone-depleting refrigerants, manufacturers are being tapped to create speed-controlled compressors that run on an array of natural refrigerants.
The second-generation Copeland Scroll variable-speed ZPV2 compressor features intermediate discharge valves to boost efficiency, optimized scroll elements for variable-speed performance, a positive displacement oil pump for enhanced reliability in low-speed operation, and brushless permanent magnet (BPM) motor technology.
Compressor performance curves can provide a service technician with the Btu pumping rate (capacity), mass flow rates, operating amperage, and operating wattage of a compressor when the suction pressure and head pressure are known for the system.