Over the years, I have heard technicians say that refrigerant can wear out or “lose its blend” by sitting in a tank. Refrigerant does not wear out or “lose its blend”… at least not like that. What can and does happen is called “fractionation.” Refrigerant blends are composed of a mix of refrigerants with different […]

Yes, I'm walking a fine line with that title or even writing about Labor Day or workers' movements at all. So, let's take a step back, strip away the politics and economic theory, and talk about this from a human standpoint. Peter McGuire was born in New York in the 1850s to a poor family […]

In the trade, we talk a lot about changes in enthalpy, especially when we are looking at total heat exchange over an evaporator. Sometimes, you will bump into the word entropy, and I wanted to take a stab at making it more understandable. Many people understand entropy as the condition in which molecules become more […]