EPA 608 Core · Refrigeration Fundamentals · Medium
How does a zeotropic blend differ from a pure refrigerant?
Answer: A. It boils and condenses over a range of temperatures.
- AIt boils and condenses over a range of temperatures.✓ Correct
- BIt evaporates at exactly one pressure and temperature.
- CIt cannot be recovered.
- DIt contains only one chemical compound.
Why A is right
Zeotropic blends (400-series) experience a temperature glide during phase change.
More Core questions
- What is 'temperature glide' in a zeotropic blend?
- What causes fractionation in a zeotropic blend?
- What characterizes an azeotropic refrigerant blend (500-series)?
- Which of the following is a natural refrigerant?
- How is subcooling measured?
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A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.