(Solved): Thermodymanics 1. Liquid kerosene flows through a Venturi meter, as shown in figure. The press ...
Thermodymanics
1. Liquid kerosene flows through a Venturi meter, as shown in figure. The pressure of the kerosene in the pipe supports columns of kerosene that differ in height by \( 12 \mathrm{~cm} \). Determine the difference in pressure between points " \( \mathrm{a} \) " and " \( \mathrm{b} \) ", in \( \mathrm{kPa} \). Does the pressure increase or decrease as the kerosene flows from \( \mathrm{K} \) i point "a" to point " \( b \) " as the pipe diameter decreases? The atmospheric pressure is 101 \( \mathrm{kPa} \), the specific volume of kerosene is \( 0.00122 \mathrm{~m}^{3} / \mathrm{kg} \), and the acceleration of gravity is \( \mathrm{g}= \) \( \mathrm{m} / \mathrm{s}^{2} \). 2. Figure below shows a closed tank holding air and oil to which is connected a U-tube mercury manometer and a pressure gage. Determine the reading of the pressure gage, in \( \mathrm{lbf} / \mathrm{in}^{2}{ }^{2} \) (gage). The densities of the oil and mercury are 55 and 845 , respectively, each in \( \mathrm{lb} / \mathrm{ft}^{3} \). Let \( g=32.2 \mathrm{ft} / \mathrm{s}^{2} \).