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Ben Dullum Refrigeration Basics Quiz April 12, 2022, 1:30 pm
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Hot Pull Down and What it Means
If you work in refrigeration, you may have heard the term “hot pull down.” This phrase describes a condition where the load on the evaporator is above design due to the box temperature or the temperature of the product in the box being higher than it would normally be. My grandpa called me a few […]Read more
Calculate Recovery Tank Fill the Easy Way
Recovering refrigerant sounds like an easy task at first, especially with digital recovery machines and large hoses at our disposal. Unfortunately, we all know that filling the tanks is more complicated than it seems. If you want to recover refrigerant and store it in a tank safely, you’re going to have to do some math. […]Read more
What is Compressor Volumetric Efficiency?
Simply stated, a compressor’s volumetric efficiency (VE) is its ability to pump the most pounds of refrigerant over time. The compressor’s function is right in the name: it compresses vapor refrigerant. After compression, the gas moves to the condenser via the discharge line. From there, the refrigeration cycle continues. However, some of the refrigerant vapor […]Read more