A liquid receiver is required between the condenser and the expansion device in a refrigerator if the total refrigerant charge needed is_____________________?
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Answer: B. more than or equal to 3.65 kg
Explanation
A liquid receiver is installed between the condenser and expansion device when refrigerant charges exceed specified thresholds. For large systems holding 3.65 kg or more of refrigerant, a receiver stores excess liquid safely during load fluctuations. This storage vessel ensures that only pure liquid enters the expansion valve, preventing operational cavitation and loss of efficiency. Refrigeration liquid receivers act as surge tanks accommodating variations in refrigerant charge caused by changing thermal loads. Large commercial chillers and industrial refrigeration systems require substantial refrigerant charges to maintain proper operational cycles. Placing the receiver immediately after the condenser guarantees liquid-phase storage under varying ambient rejection temperatures.
Option A less than 2 kg describes small domestic systems where internal piping volume acts as an adequate liquid reservoir. Option C more than 10 kg is a conservative threshold that exceeds the standard industrial cutoff point of 3.65 kg. Option E none of the above is incorrect because industry standards explicitly require receivers for large refrigerant charges.
- Subject
- Engineering
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- Mechanical Engineering
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- medium
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