Select the best answer for the question.
What's the minimum velocity in a horizontal suction line for most systems?
A. 3,000-3,500 ft per minute
B. 500-750 ft per minute
C. 750-1,000 ft per minute
D. 1,000–1,500 ft per minute
Answer (2)
The minimum velocity in a horizontal suction line for HVAC systems is crucial to ensure oil return to the compressor and maintain system efficiency. The generally accepted minimum velocity is between 750 and 1,000 feet per minute. Thus, the chosen answer is C. 750-1,000 ft per minute.
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The question is about the minimum velocity in a horizontal suction line for HVAC systems.
The options provide different velocity ranges in ft per minute.
The correct range to ensure oil return to the compressor is 750-1,000 ft per minute.
Therefore, the answer is \boxed{OC}.
Explanation
Understanding the Question The question asks about the minimum recommended velocity in a horizontal suction line for most HVAC (Heating, Ventilation, and Air Conditioning) systems. This is a knowledge-based question related to engineering and HVAC design principles.
Listing the Options The options provided are: OA. 3,000-3,500 ft per minute OB. 500-750 ft per minute OC. 750-1,000 ft per minute OD. 1,000–1,500 ft per minute
Determining the Correct Answer The minimum velocity in a horizontal suction line is crucial to ensure that oil is carried back to the compressor. If the velocity is too low, oil can accumulate in the suction line, leading to compressor damage. Based on standard HVAC practices, the generally accepted minimum velocity is 750-1,000 ft per minute.
Final Answer Therefore, the best answer is: OC. 750-1,000 ft per minute
Examples
In HVAC systems, maintaining the correct refrigerant velocity in suction lines is crucial for efficient and reliable operation. If the velocity is too low, oil can pool in the lines, reducing compressor lubrication and efficiency. Ensuring adequate velocity, such as the minimum specified, helps carry the oil back to the compressor, preventing damage and maintaining system performance. This is similar to ensuring proper water flow in plumbing to prevent sediment buildup.
