Bert provides hands-on demonstrations, having the techs feel the temperature differences before and after the metering device to illustrate the flashing/boiling process. They discuss concepts like flashing gas, pressure drops across metering devices, the effects of restrictions, and the importance of keeping coils clean for efficient heat transfer.
Elliot points out diagnostic tricks like listening for certain sounds that can indicate flashing is occurring due to insufficient liquid supply reaching the metering device. Together, they reiterate the refrigerant states (pressure, temperature, phase) throughout the cycle, reinforcing key concepts through real-world examples.
Refrigeration Basics Part 1 – https://www.youtube.com/watch?v=eKb_xbADAgA&ab_channel=HVACSchool
Refrigeration Basics Part 2 – https://www.youtube.com/watch?v=BhPls78ObH4&ab_channel=HVACSchool
Buy your virtual tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.
Read all the Tech Tips, take the quizzes, and find our handy calculators here or on the HVAC School Mobile App for Apple and Android.
Comments
To leave a comment, you need to log in.
Log In