Video thumbnail for FE Mechanical Exam Prep 72, Refrigeration and Heat Pump Cycles

FE Mechanical Exam Prep 72, Refrigeration and Heat Pump Cycles

Nov 4, 2026
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to identify the four key state points of an ideal vapor-compression cycle using the NCEES Handbook. - The specific enthalpy-based formulas for calculating the refrigeration effect and compressor work. - How to calculate the Coefficient of Performance (COP) for both refrigerators and heat pumps. - The critical distinction between thermal efficiency and COP, and why COP is usually greater than one. - A simple mnemonic to ensure you use the correct numerator for any COP calculation: "What you want over what you pay for." For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
Jobs & Education