A 55 kW refrigeration load is to be carried by an air refrigeration system with a discharge pressure of 1370 kPa and a refrigerator pressure of 345 kPa. Compression and expansion processes are polytropic with n-1.37. The pressure at the start of the expansion is 1344 kPa and the temperature is 32°C. Air temperature leaving the refrigerator is 0°C and entering the compressor is 5°C. Clearance for both compressor and expander is 5%. Determine the COP.
A 55 kW refrigeration load is to be carried by an air refrigeration system with a discharge pressure of 1370 kPa and a refrigerator pressure of 345 kPa. Compression and expansion processes are polytropic with n-1.37. The pressure at the start of the expansion is 1344 kPa and the temperature is 32°C. Air temperature leaving the refrigerator is 0°C and entering the compressor is 5°C. Clearance for both compressor and expander is 5%. Determine the COP.
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter28: Special Refrigeration Applications
Section: Chapter Questions
Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?
Related questions
Question
A 55 kW refrigeration load is to be carried by an air refrigeration system with a discharge pressure of 1370 kPa and a refrigerator pressure of 345 kPa. Compression and expansion processes are polytropic with n-1.37. The pressure at the start of the expansion is 1344 kPa and the temperature is 32°C. Air temperature leaving the refrigerator is 0°C and entering the compressor is 5°C. Clearance for both compressor and expander is 5%. Determine the COP.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 5 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi…
Mechanical Engineering
ISBN:
9781305578296
Author:
John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:
Cengage Learning
Refrigeration and Air Conditioning Technology (Mi…
Mechanical Engineering
ISBN:
9781305578296
Author:
John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:
Cengage Learning