Performance

Hydrocarbons in Refrigeration

Hydrocarbons such as Propane, Propylene, and Isobutane are great natural refrigerants that are successfully used in commercial refrigeration appliances today. Hydrocarbons can boast the low global warming potentials regulators are looking for without being Ozone depleting. So why don’t they get as much airtime as other natural refrigerants such as ammonia and CO2? Perhaps the …

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Stainless Steel Condenser Tubes or Galvanized? That is the question!

June 2022 Blog Post Author: Erik Hansen   Subject: Stainless Steel Condenser Tubes or Galvanized?  That is the question! NOTE: The posting will dig a little into product selection revolving around evaporative style condenser products and not necessarily air-cooled or adiabatic condensers.   Industrial refrigeration systems in the Midwest often use evaporative type condensers for …

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Evaporator Condenser Passivation

If you have ever been involved in buying or installing a new evaporatively cooled condenser, then you’ve probably heard about evaporative condenser passivation. You probably heard it is important and a process you should strive to complete. But if you are like many owners, operators, or heck even refrigeration engineers, that’s probably where your knowledge …

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Ammonia Liquid Migration and Cold Weather Startup

Those of us in the northern climates are familiar with the cruel outside conditions.  Old Man Winter lets loose his cool breathe and our backyards and driveways become frigid winter lands that make us always think…“why the hell do I live here again?!”  Those of us in the northern climates and familiar with central ammonia …

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Preventative Maintenance Basics – Condenser and Evaporator Coils

With fall fast approaching it is a great time to remind everyone about the importance of commercial refrigeration routine maintenance. Maintaining your systems for optimal energy efficiency is great for the environment and for your pocketbook. Whether you do the maintenance yourself or have a preventative maintenance agreement with Carlson and Stewart Refrigeration, the importance …

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