Question

4. Given the following experimental observations (errors determined as standard deviations): h₁ = 15 + 1mm (manometer reading) h₂ = 9±1mm (manometer reading) P₁ = 18.6 ± 0.1 psia Q=0.308 ±

0.06 ft³. (min)-¹ V = 1 + 0.05 gal m = 8.2 ± 0.05 lbm Calculate the following derived variables and their best-estimate uncertainties. Present the results in the form of x = x, ± 8x. a. Pressure drop reading from the manometer. AP(mmHg) = h₁ - h₂ [6±1.4mmHg] b. Pressure drop conversion from mmHg to psia. [0.12±0.027psi] c. Pressure ratio: [1.006±0.008794] d. Specific Gravity: SG = Psample Pwater (for liquids) [0.98+0.05] e. Valve sizing coefficient: C₂ = Q * SG So for Qin ΔΡ gal minute and AP in psi [6.7+1.5]

Fig: 1