A refrigeration system operates with a typical suction pressure of 10 kg/cm² gauge and a condensing pressure near 67 kg/cm². Which refrigerant is most likely used in this system?

Refrigeration and Air Conditioning MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Refrigeration and Air Conditioningmechanical-engineering-mcqs › refrigeration-and-air-conditioning
Published
25 Jan 2019
Last updated
28 May 2026

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Explanation

Given the high operating suction and condensing pressures, carbon dioxide is the suitable refrigerant for this system. Ammonia, Freon, brine, and hydrocarbon refrigerants operate under different pressure ranges and conditions.

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