Exam Question
(a) Detail the desirable properties of a refrigerant. (8)
(b) Make a table and compare following refrigerants for use in a provision cooling plant for a 50000 DWT Oil tanker: R-22, R-134a. (8)
Class 2 (2nd Engineer)
MEKG
📅 Dec 2023
Reference Answer
### (a) Desirable Properties of a Refrigerant
A refrigerant for marine applications must possess a specific combination of thermodynamic, chemical, physical, and environmental properties to ensure safe, efficient, and compliant operation. These properties are critical for system design, material selection, and long-term reliability.
#### 1. Thermodynamic Properties
These properties directly influence the efficiency and size of the refrigeration plant.
A refrigerant for marine applications must possess a specific combination of thermodynamic, chemical, physical, and environmental properties to ensure safe, efficient, and compliant operation. These properties are critical for system design, material selection, and long-term reliability.
#### 1. Thermodynamic Properties
These properties directly influence the efficiency and size of the refrigeration plant.
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