How Do Refrigerated Trailers Work?
You understand the need for certain items to remain at cold temperatures. It makes perfect sense for things that can freeze or melt such as wine and ice cream respectively. But do you know how the reefer unit actually works? It’s an amazing feat to travel long distances and maintain a cold temperature for your cargo and this invention has been around for less than 100 years. Let’s take a look at how these reefer units actually function. The Components One thing to be aware of is that the refrigeration systems are a closed system. The idea behind refrigeration is to remove heat and maintain a steady temperature. Let’s review the major parts of the system. The compressor is driven by a small engine within the reefer unit. First, the compressor draws in gaseous refrigerant and compresses it. The pressure inside liquefies the gas and the liquid refrigerant gives off heat to the body of the compressor and the surrounding air. The condenser receives the liquid fr