Problem 13.84 The converging nozzle has an exit diameter of 0.25 m. The fuel-oxidizer mixture within the large tank has an absolute pressure of 4 MPa and temperature of 2100 K. The mixture has k = 1.38 and R=296 J/[kg. K]. (Figure 1) Figure 0.25 m 1 of 1 Part A Determine the mass flow from the nozzle when the backpressure is a vacuum. Express your answer using three significant figures. 17 ΑΣΦ ↓↑ vec m = Submit Provide Feedba Request Answer ? kg/s

A liquid of volume 18x10 liters undergoes a volume change with the final volume as 10x10 liters when it is subjected to a pressure of 15atm. Determine its compressibility. a) 3.56x10 m'/N b) 2.92x10 m/N c) 3.87x10 m/N d) 4.21x10 m/N

Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 250 lb/in² from a saturated vapor state to a volume of 7.08 ft³. Determine the initial and final temperatures, in °F, and the work for the process, in Btu.

A flocculator tank has a volume of 2800 m³. The temperature of water in the tank is 15°C, and the average velocity gradient maintained in the tank is 100/s. The temperature of water is reduced to 5°C, but all other operating conditions including the power input are maintained as the same. The decrease in the average velocity gradient (in %) due to the reduction in water temperature is (round off to nearest integer). [Consider dynamic viscosity of water at 15°C and 5°C as 1.139 × 10-³ N-s/m² and 1.518 x10-3 N-s/m², respectively]

and temperature. Calculate the density of the gas.Q.4: If the gas oil ratio = 560 Scf/STB at initial pressure of 4300 psia, calculate the GOR at bubble point pressure of 3500 psia and at pressure of 1900 psia.

A well-insulated turbine operating at steady state is shown on the right. Steam enters at 3 MPa, 400°C, with a volumetric flow rate of 85 m³/min. Some steam is extracted from the turbine at a pressure of 0.5 MPa and a temperature of 180°C. The rest expands to a pressure of 6 kPa and a quality of 90%. The total power developed by the turbine is 11,400 kW. Kinetic and potential energy effects can be neglected. Determine (a) the mass flow rate (in kg/s) at each exit, and (b) the diameter of the duct, d₂ (in cm) where steam is extracted P₁ = 3MPa T₁=400°C (AV)₁ = 85 m³/min Turbine P2 = 0.5 MPa T₂ = 180°C V₂= 20 m/s Power out ¹3 P3= 6 kPa x3 = 90%

Number 15. complete solution and box final answer

The thrust of a shaft is taken by a collar bearing filled with a forced lubrication system which maintains a film of oil of constant thickness 0.3 mm between the surface of the collar and the bearing. The outer and inner diameters of the collar are 156 mm and 120 mm respectively. The coefficient of viscosity of the oil is 1.2 poise. Calculate the power lost in friction of the bearing when the shaft rotates at 500 revolutions per minute.

During the production of biodiesel, glycerin is a waste product and is collected by gravity separation because its SG (1.26) is much higher than that of biodiesel. Glycerin is withdrawn from the bottom of the separation tank through a pipe that has p₁ = 350 kPa gage, where D = 70 cm and the flowrate is 680 L/s. Find the pressure at section 2, which is 0.8 m higher and where the diameter has been reduced to d = 35 cm. Assume the flow is inviscid. (Gravity acceleration: g = 9.81 m/s²) Biodiesel Glycerin O 412 kPa O 311 kPa O 356 kPa O 257 kPa d 2

A Cylindrical Can open at one end is 20 cm in diameter and 40 cm long. The can welghs 6 N. The can is carefully put in a large tank of water vertically, with 20 cm its open end down so that the air is trapped in It (as shown in given figure). If the air in it can be assumed to undergo 40 cm isothermal compression, calculate the elevations of the water surface inside the Can and the top of the Can relative to the water surface in the tank. The atmospheric pressure is 100 kPa and the temperature is 20°C. (Take : = 9810 N/m³]