Articles by Ron Rajecki

ice machine

Have an Ice Day

Ice machine manufacturers continue to meet consumers’ insatiable cravings
Ron Rajecki
July 10, 2017
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.
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hydrocarbon

Working Safely with HC Refrigerants

Technicians will soon be encountering R-290 and R-600a in commercial kitchens
Ron Rajecki
July 10, 2017
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.
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Steam

Visit to Museum Provides Perspective in Uncertain Times

New innovations will continue to spring from our industry’s brilliant minds
Ron Rajecki
July 5, 2017

We all know that these are interesting times in Refrigerationland. CFCs are history, HCFCs are on their way out, and HFCs are being scrutinized and phased down; dozens of new refrigerants are in the works or have already arrived on the scene; naturals are poised to claim a bigger share of the market; we’re in the Paris agreement and then we’re out, and no one knows what that might mean for the Kigali Amendment; and the Department of Energy is always lurking about, ramping up efficiency standards.


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Chris

Seven Tips to Contracting Business Success

The NEWS’ Best Contractors to Work For share the best advice they’ve ever received
Ron Rajecki
June 12, 2017
The NEWS asked seven of its Best Contractors to Work For contest winners to share the best business advice they’ve ever received. Each individual offered unique advice, ranging from clearly defining a company’s purpose to fully trusting in God’s omnipotence. Here for your perusal are the insights, advice, and opinions as provided by the Magnifi­cent Seven.
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Contemplating the Yin and Yang of DOE Regs

Conversations on a trade show floor include some surprises
Ron Rajecki
June 5, 2017

“DOE has been taking up all my (expletive) time.” That’s the kind of statement you can overhear at a trade show that you wouldn’t necessarily see on company letterhead. And, in fact, it’s exactly what I overheard between two gentlemen as I made my way from booth to booth at the recent National Restaurant Association show.


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Shapiro

Should Ammonia Exit ASHRAE Standard 15?

IIAR 2 may be a more appropriate safety standard for the B2L refrigerant
Ron Rajecki
June 5, 2017
Although there may be a temptation to simply treat A2L refrigerants as equivalent to ammonia with respect to flammability hazard, ammonia really is an entity unto itself. Like an A2L, it exhibits a low-flame velocity in flammability tests, but ammonia has the unique safety advantage of a strong and unmistakable odor that is typically present long before the onset of a flammability hazard. All of the current A2L refrigerants, on the other hand, are odorless.
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chiller design

Technological Upgrades Pace Dynamic Chiller Market

Refrigerant changes, air-cooled growth the most significant disrupters
Ron Rajecki
May 22, 2017
Things are changing in the chiller market — especially in regards to air-cooled models, variable frequency drives (VFDs), and refrigerants. Contractors are challenged to stay abreast of these trends in real-time.
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Life Cycle Costing - Chiller

Many Facets to Chiller Selection

Contractors, consulting engineers can help building owners make the right equipment decisions
Ron Rajecki
May 22, 2017
An investment in a new chiller is not one that building owners make lightly. Owners typically need and appreciate the guidance of a knowledgeable HVAC contractor when making this purchase as there are a number of factors that go into the selection process, and not all of them are necessarily related to the actual chiller itself.
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