Refrigeration and air conditioning (RAC) engineers design, install, repair and maintain the cooling systems. RAC engineers may have to do this for large and complex building and factories. RAC ...

The simple system in Figure 1 shows the application of the Second Law of Thermodynamics. The compressor (A) adds energy to the refrigerant, and it becomes hot, just the way a hand operated tire pump ...

Fall officially arrives on September 23 this year, and I can hardly wait. For those of us living in the Southwest U.S., it’s been a miserably hot summer. Residents of Phoenix, Arizona, for example, ...

Motors for air conditioning and refrigeration equipment are special-purpose motors called “hermetic,” meaning they’re sealed. They’re sealed because they’re in the same housing as the compressor and ...