45 min listen
What is DX? - Short #185
ratings:
Length:
6 minutes
Released:
Jan 30, 2024
Format:
Podcast episode
Description
In this short podcast episode, Bryan tackles the following question: What is DX? In short, DX stands for "direct expansion," which means that you cool the end product via the refrigeration cycle. We blow air over an evaporator coil, which allows the refrigerant to take up heat from the air and directly expand. Chillers, boilers, and chilled water systems are NOT direct expansion systems; they use a secondary fluid like water or glycol to move the heat throughout the structure, not an evaporator to take up heat directly. They also have heat exchangers to move heat from the refrigerant to the secondary fluid. DX systems tend to be smaller, and chillers and boilers tend to be larger. Chillers are advantageous in cases where we're working with toxic or flammable refrigerants or large refrigerant charges; we can keep the refrigerant charge away from the structure and space or product(s) needing to be heated or cooled. Learn more about the 5th Annual HVACR Training Symposium at https://hvacrschool.com/Symposium24. If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.” Subscribe to our YouTube channel at https://www.youtube.com/@HVACS. Check out our handy calculators HERE or on the HVAC School Mobile App (Google Play Store or App Store).
Released:
Jan 30, 2024
Format:
Podcast episode
Titles in the series (100)
Why a TXV instead of a TEV?.. or a CSV?: Bryan talks to Leslie about the mysterious and magical TXV valve.. What it is, what is does and why they get misdiagnosed so often. Thanks to Daniel Anderson for making this his first episode suggestion. by HVAC School - For Techs, By Techs