The Science Behind a Reefer Trailer's Cool Temperatures

March 14, 2023

A refrigerated or reefer trailer can provide your business with the temperature-controlled delivery that it needs at a price that you can afford. But how exactly do these trailers work, and how do they keep your goods fresh? This question is important to answer if you're considering a reefer trailer rental. Thankfully, the science behind reefer trailer cooling is not as complex as you might think. Let's review this topic below.

The Cooling Process

According to ABCO Transportation, Inc., a great reefer trailer can provide temperatures between -20 and 55 degrees Fahrenheit. It can hit these temperatures thanks to a unit known as a compressor. A compressor takes in refrigerant gasses and compresses them so the gasses become liquids. At this point, the air around the unit is still warm and requires condensing.


The liquid from the compressor is then drawn into a condenser unit that starts a heat exchange. The warm fluid from the compressor flows into various tubing attached to the fins. The fins provide a larger surface area for the fluid, which is then cooled by outside air brought into the unit by a condenser fan. As a result, the fluid in the unit cools significantly.


At this point, the refrigerant should be cool, and the fluid should be released into an evaporator. Here, the cool fluid provides cold air for the unit but evaporates back into gas when heated by the coils of the unit. As a result, the gas can be reused for cooling again, keeping your reefer trailer rental cool. The sides of the trailer contain various insulation elements that stop heat from entering its interior.

Setting a Proper Temperature

You can set whatever temperature you want within the specific range suggested above. For example, you can set a cool range for various makeup to keep it from spoiling or freezing temperatures for food and medicine. The unit will maintain this temperature using a thermostat that automatically adjusts its operation to suit your cooling needs.


Understanding this unique temperature control gives you the information you need to make an informed reefer trailer rental decision. If you're interested in this option and want to work with a team that you can trust, turn to Jilco Equipment Leasing Co. Inc. Learn more about the benefits we can provide you by contacting us today.

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