The Measurement of Pressure Through Tubes in Pressure Distribution Tests (1928)
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1 - .000796 L - .000393 P m -hTMmi T = (9.50-.016P) x 10~ALIA h (3) = (1.30-.00311P)X10-3L From these the time lag TL was found by means of TL=AT+TM'-TM (4) Figures 7 and 8 are curves of TL and TM' plotted against TM for the shortest and longest tube lengths used. In Figure 7 the maximum pressure… … TM (seconds) TM (seconds) -Maximum pressure 5 inches of water, FlG. 8.—Maximum pressure 140 inches of water. Aluminum Aluminum tubes ^ inch inside diameter tubes \ inch inside diameter Effect of change of maximum pressure and tube length on time lag of pressure peaks and time of use of pressure at…
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