We all see a lot of questions about dyes, leak stoppers, lubricants, inhibitors, and snake oil. All of those were designed to go into the refrigerant circuit and “improve” something. I just go back to what Ray Johnson always said. (Ray is one of my early heroes in the biz, and he taught me a […]

Net refrigeration effect (NRE) is the quantity of heat that each pound of the refrigerant absorbs in the refrigerated space to produce useful cooling. That’s a pretty vague definition. We know that it’s an amount of heat in processes that take place within the evaporator. Still, the phrase “useful cooling” seems rather broad. Even though […]

This article was written by Senior Refrigeration Tech Jeremy Smith. Before we get to it, I want to remind you that ALL of the tech tips are available in chronological order HERE, and you can sort through them alphabetically by selecting the letters and numbers above the tips. It's a great link to share with […]