12K views · 114 reactions | Diesel Technology students, Mike and Dawson are using a Thermo King Auxiliary Power Unit (APU) to test parameters and run a performance test. APU’s make it possible to power a truck's heating, air conditioning and other comfort systems without the need to keep the engine idling, significantly saving on fuel. #handsonlearning | Pennsylvania College of Technology | Facebook

In 1938, Frederick McKinley Jones revolutionized food transportation with his invention of the first successful mobile refrigeration system. Born in Covington, Kentucky in 1893, this self-taught engineer created a mechanical cooling unit that could be mounted on trucks, ending the era of using ice for food transport. 🚛 His invention, the Model A, transformed the way America ate. Before Jones, trucks could only travel short distances before food spoiled. His mechanical cooling system allowed fre