Consider the same system as last month’s column — a medium-temperature refrigeration system incorporating a liquid high-side receiver, a TXV as the metering device, and R-134a refrigerant — but the measured and calculated values are listed in Table 2, along with this detailed system analysis.
The three-day event featured educational sessions and panel discussions that covered everything from technology and market trends to regulatory updates to what the future of the refrigeration industry may look like.
The heating, air conditioning, and refrigeration training program offered by Johnstone Supply (Grimme Group) through its Johnstone Solutions University has received national accreditation by the Partnership for Air Conditioning, Heating, Refrigeration (PAHRA) program, making it the only HVACR wholesale distributor in the country to receive such an accreditation.
The heating, air conditioning, and refrigeration training program offered by Johnstone Supply (Grimme Group) through its Johnstone Solutions University has received national accreditation by the Partnership for Air Conditioning, Heating, Refrigeration (PAHRA) program, making it the only HVACR wholesale distributor in the country to receive such an accreditation.
A few days prior to the start of the recent ATMOsphere 2017 conference held June 5-7 in San Diego, President Donald Trump announced that the U.S. would be withdrawing from the Paris climate agreement. That did little to dampen the mood among the conference’s 400-plus attendees.
These are interesting times for manufacturers of freezers and coolers and the contractors who install and service these essential commercial refrigeration units.
The ice machine industry is always working hard, innovating, and dealing with regulations in order to meet the insatiable demand for the perfect ice cubes, crescents, and nuggets.
Most HVACR technicians will need to raise their levels of safety consciousness when servicing equipment using flammable hydrocarbon (HC) refrigerants, such as R-290 (propane) or R-600a (isobutane), and the first place many technicians are likely to encounter these HCs will be in smaller kitchen equipment, such as reach-in coolers.
R-404A is being used by OEMs in new equipment and also on retrofitted equipment. However, because of its high global-warming potential (GWP), the U.S. Environmental Protection Agency (EPA), under its Significant New Alternatives Policy (SNAP) program, has listed R-404A as an “unacceptable” refrigerant in a number of retail food refrigeration categories and in vending machines end-uses.
Carbon dioxide (CO2) as a refrigerant is gaining increasing industry acceptance in commercial and industrial refrigeration systems in North America, according to a survey conducted by Danfoss. The survey also identified barriers to greater CO2 use in refrigeration.