Coil materials can include copper, aluminum, and steel. But in some cases, choosing one of the three can still lead to more decisions. One recent development involves aluminum microchannel coils.

Like many industrial refrigeration contractors, Republic Refrigeration's territory has few geographical limits. The company is registered in 35 states, and while much of its work is throughout the Southeast United States, it has projects as far away as the state of Washington.

An interesting dynamic for those of us in HVACR is how many trade shows, expos, and even conferences have been or are going to an every-other-year format.

The arrival of 13 SEER has, in the eyes of some contractors, caused manufacturers to retreat when it comes to supplying ducted air conditioning in the 1-ton, 12,000-Btu range. However, there are still some split systems employing micro-channel coil technology as well as an increasing number of ductless units for that market.

Making ammonia (R-717) and CO2 (R-744) work together to create industrial refrigeration formed the basis of several technical papers and exhibit booth discussions at the most recent conference and exhibition of the International Institute of Ammonia Refrigeration (IIAR) Conference.

David Grong, the new chairman of the International Institute of Ammonia Refrigeration (IIAR), talks about his company's past and the association's future.

We know that the purpose of refrigeration is to keep a product that needs refrigeration as fresh and usable for as long as possible. But do we really expect refrigeration to do the job for 5,300 years?

The presence of seven representatives of the China refrigeration industry at the International Institute of Ammonia Refrigeration (IIAR) Conference was emblematic of IIAR's "continuing efforts toward advocating ammonia refrigeration in the huge emerging market of China," according to Bill Bowles the 2005-2006 IIAR chair.

In recent years Henry Technologies has undergone an extreme makeover - to the point of the company calling itself ‘The New Henry Technologies' and adopting the slogan, "A 91-year-old startup company."

It ends up the ‘no mineral oil in HFCs' and ‘R-134a in automotive' decrees were not etched in stone. And in fact, things are underway to contradict those declarations.