Which scenario occurs when a variable-speed refrigerant pump within a heat pump experiences lubricant breakdown?

💡 Explanation

When lubricant breaks down, increased friction between pump components generates excessive heat because metallic surfaces interact directly, raising the internal temperature of the compressed refrigerant. Therefore compressant overheating occurs, rather than cavitation, malfunction, or seizure which result from other system flaws.

• Which outcome accompanies long-term operation of an absorption refrigerator with insufficient generator heat input?
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• Which event follows when strain hardening exceeds capacity within a reinforced concrete beam during excessive load?