Which operating risk is amplified when isobutane refrigerant leaks into a refrigeration system designed for R-134a?

💡 Explanation

When isobutane, a flammable refrigerant, leaks into an R-134a system, the increased vapor pressure from the mixture, exceeding system design limits, causes system over-pressurization because the new mixtures exhibit altered thermodynamic properties. Therefore system rupture is the risk, rather than just temperature increases, reduced capacity, or oil degradation which have lower immediate hazard.

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