Air Receiver Sizing
This calculation uses the air consumption rate of the instruments and determines the size of an air receiver based on the time required to meet a minimum pressure. The minimum pressure is generally the low pressure set point of a compressor. The initial pressure is the design pressure the receiver. The calculation is displayed symbolically as:
If the compressor only runs when the low level pressure is met, then the Flowin would equal zero.
Air Receiver Sizing Formula |
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\(\large{ AR = \frac{ p_{atm} \: t \; \left(Q_{out} \;-\; Q_{in} \right) }{p_i \;-\; p_f } }\) | ||
Symbol | English | Metric |
\(\large{ AR }\) = air receiver size | \(\large{gal}\) | \(\large{L}\) |
\(\large{ Q_{in} }\) = flow in | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) |
\(\large{ Q_{out} }\) = flow out | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) |
\(\large{ p_{atm} }\) = atmospheric pressure | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ p_f }\) = final pressure | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ p_i }\) = initial pressure | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ t }\) = time | \(\large{sec}\) | \(\large{s}\) |