GCAP Book Practice Test

Question: 1 / 400

What is a potential drawback of using hot gas defrost cycles?

Increased energy consumption

Reduced cooling capacity during defrost

The correct answer highlights a significant characteristic of hot gas defrost cycles: they can temporarily diminish the cooling capacity of the system during the defrosting process. When a refrigeration system enters a defrost cycle, it redirects some of the refrigerant gas to heat the evaporator coils, causing the cooling effect to pause or decrease significantly. This is necessary to remove ice build-up but leads to a reduced ability to maintain the desired cooling temperature in the surrounding environment.

Understanding this drawback is crucial in applications where consistent cooling is essential, as it may affect product storage, process temperatures, or overall system efficiency during defrost periods. The other options, while they can be considerations in different contexts, do not specifically encapsulate the immediate effect on cooling capacity that occurs during a hot gas defrost cycle.

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Higher maintenance costs

Longer time to achieve desired temperatures

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