System accumulators must possess sufficient internal volume to hold a refrigerant charge of at least_________________?
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Answer: C. 50%
Explanation
System accumulators are specifically designed to safely hold at least fifty percent of the total refrigerant charge. This volumetric capacity prevents liquid refrigerant from flooding back into the compressor during load transients. Containing excess liquid protects compressor internal components from catastrophic hydraulic shock damage during operation. Refrigeration systems experience fluctuating operational conditions that can cause liquid refrigerant to enter suction lines. An accumulator acts as a temporary holding reservoir situated just before the compressor suction inlet port. Proper sizing ensures the vessel can accommodate refrigerant migration during extended system shutdown periods.
Commercial refrigeration and air conditioning systems rely on accumulators to ensure reliable compressor operation year-round. Preventing liquid slugging extends equipment lifespan and reduces costly emergency repair downtime for businesses. HVAC technicians verify accumulator volume specifications during major system overhauls and component replacements. Ten percent capacity is far too small to handle normal liquid refrigerant migration and transient surges. Twenty-five percent volume provides insufficient safety margin for systems experiencing heavy load fluctuations. One hundred percent capacity is unnecessary and would make the accumulator excessively large and expensive.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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