Calculate the pressure produced by a 40 foot onion tank, filled with 17.5 ft of a hydrocarbon fluid. (.54 s.g.) . Vapor pressure 300. Add 15 psi N₂ to total. What is the final pressure? A) 319.09 psi B) 31.9 psi C) 3.19 psi D) 3190.9

Question

Quizplus · Accepted Answer

The pressure produced by the hydrocarbon fluid can be calculated using the formula P = hρg, where h is the height of the fluid, ρ is the density of the fluid, and g is the acceleration due to gravity (32.2 ft/s^2). The specific gravity (s.g.) is the ratio of the density of the fluid to the density of water (62.4 lb/ft^3). Thus, ρ = s.g. × 62.4 lb/ft^3 = 0.54 × 62.4 lb/ft^3 = 33.696 lb/ft^3. Substituting the values, P = 17.5 ft × 33.696 lb/ft^3 × 32.2 ft/s^2 = 18989.784 lb/ft^2. Converting to psi (pounds per square inch) by dividing by 144 (since there are 144 square inches in a square foot), we get 18989.784 lb/ft^2 / 144 in^2/ft^2 = 131.87 psi. Adding the vapor pressure (300 psi) and the additional 15 psi, the total pressure is 131.87 psi + 300 psi + 15 psi = 446.87 psi. However, given the options provided, it seems there might have been a misunderstanding in the calculation or the options provided. Based on the calculation method and the options, none directly match the calculated result, suggesting a possible error in the interpretation of the question or the calculation. Re-evaluating with a focus on the provided options and considering the vapor pressure as part of the total pressure calculation, the initial approach to calculate the fluid pressure might need adjustment or clarification regarding the inclusion of vapor pressure and additional psi in the context of the options given.

Calculate the Pressure Produced by a 40 Foot Onion Tank