An undercharge of refrigerant will cause low head and suction pressures, but that is not the only thing that will cause both pressures to be low. An undercharge will have low condenser liquid subcooling readings on the high side, where a dirty air filter for the evaporator will not produce low condenser liquid subcooling readings.
The supermarket industry realized a long time ago that it is impossible to solve environmental problems related to refrigerant leaks using a repair-based approach (i.e., with policies that focus on leak repair and record-keeping). Yet, the U.S. Environmental Protection Agency’s (EPA’s) main regulatory program to address harmful refrigerant emissions reflects a repair-based policy.
Agency notes unapproved refrigerant poses risk of fire or explosion
May 5, 2016
The U.S. Environmental Protection Agency (EPA) is cautioning homeowners, HVAC contractors, and service technicians of the safety hazards related to recharging existing home air conditioning systems with a propane-based refrigerant.
Includes a ban on the sale of all virgin HFC refrigerants with a high GWP
May 2, 2016
California’s Air Resources Board (ARB) has released a proposed strategy aimed at curbing emissions of short-lived climate pollutants, including hydrofluorocarbons (HFCs). The proposal targets near term emission reductions that will help California meet its 2030 greenhouse gas reduction targets.
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.
Production is expected to begin by the end of 2016
May 2, 2016
Honeywell has entered into a supply agreement with a Chinese manufacturer to produce Honeywell Solstice® yf (HFO-1234yf), further extending its global supply base for this low-global warming potential (GWP) hydrofluoroolefin refrigerant.
DPC collects 30- and 50-lb. cylinders of recovered refrigerant directly from area HVACR businesses
May 2, 2016
Diversified Pure Chem, a U.S. Environmental Protection Agency (EPA)-certified refrigerant reclaimer based in Dallas, has opened three new facilities to offer small cylinder exchange and refrigerant buyback services in the following markets: Cincinnati; Louisville, Kentucky; Indianapolis; Greensboro, North Carolina; and central Florida.
The latest forum was held Feb. 18 in Atlanta and was highlighted by Drusilla Hufford, director, stratospheric protection division, U.S. Environmental Protection Agency (EPA), who gave a national and global regulatory update, as well as Rajan Rajendran, vice president, systems innovation center and sustainability, Emerson Climate Technologies, who briefed attendees on refrigerant and energy regulations.
Proposed emissions reduction strategy includes several measures targeting HFCs
April 15, 2016
California’s Air Resources Board (ARB) has released a proposed strategy aimed at curbing emissions that includes prohibitions on high global warming potential (GWP) hydrofluorocarbon (HFC) refrigerants.
In addition to making facility improvements, company will also pay $55,000 in penalties
April 14, 2016
In a settlement announced by the U.S. Environmental Protection Agency (EPA), the Oregon Ice Cream Co. has agreed to make safety improvements and upgrade its refrigeration equipment to prevent ammonia refrigerant releases at its manufacturing facility in Eugene, Oregon.