Refrigeration

March 3, 2015: EPA Approves New Low-GWP Refrigerants

Final Rule Expands the List of SNAP-Approved Substitutes

The U.S. Environmental Protection Agency (EPA) announced it is increasing the options for refrigerants used in various types of refrigeration and air conditioning equipment in the United States to offer alternatives with low global warming potential (GWP). 


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The Professor: Diagnosing Compressor Motor Overheating

Performing a Three-phase Compressor Voltage Check, Step by Step

Voltage unbalances exceeding more than 2 percent in three-phase systems can cause current unbalance among the windings. These voltage and current unbalances can cause an increase in winding temperature and an overheating problem that can be detrimental to the motor.


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Ice Breaker: What is Superheat?

Defining Vapor Refrigerant Temperature and its Impact on System Performance

Measuring the evaporator’s superheat value is an important part of analyzing a system’s performance. If a lower-than-normal value is measured, too much refrigerant is entering the evaporator for the heat load. If a higher-than-normal value is measured, too little refrigerant is entering the evaporator for the heat load. 


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Contractors Eye Refrigerant Regulations

California’s Impact Felt in Remaining 49 States

The aggressive environmental and regulatory positions in Sacramento have caused the rest of the U.S. to monitor policymaking and enforcement out West. And, more often than not, those policies have ended up as the blueprint for federal regulations.


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Counting CO2 Costs

Return on Investment Needs to Be Factored In

Everyone talks about what it initially costs a supermarket to switch to a 100 percent CO2 commercial refrigeration system. But start thinking about the costs that come next — on everything from electricity to regulatory compliance — and the return on investment on CO2 begins to make a great deal of sense.


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Considering Complexities in Commercial Refrigeration

Symposium Also Looks at Refrigerants, Energy Efficiency, Sustainability

Danfoss’ 22nd EnVisioneering Symposium was titled “Refrigerants2Sustainability,” and focused on the challenges reshaping the refrigeration landscape. These include climate change, increased regulatory pressure, ever-increasing energy costs, contractor training on new low-GWP systems, and more.


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Apples and Oranges Beyond Comparison

Refrigeration System Designs More Complex

So, supermarket owners want refrigeration systems that are energy efficient to hold down costs and pro-environmental for political correctness. But for engineers, contractors, and technicians that approach may not be all that easy, whether bringing a new store online or retrofitting an existing one.


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2015 HARDI Fly-In

Highlights from HARDI's Congressional Fly-In in Washington, D.C.

Podcasts

NEWSMakers: Clint Schreck

Clint Schreck, general manager, Columbus Worthington Air, Columbus, Ohio, discusses winning Angie’s List Super Service Award, how to handle online reviews, and much more.

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