Q2: A nozzle is a device for increasing the velocity of a steadily flowing fluid. At the inlet to a certain nozzle the specific enthalpy of the fluid is 3025 kJ/kg, the inlet area is 0.1 m² and the specific volume is 0.19m’/kg. At the exit from the nozzle the specific enthalpy is 2790 kJ/kg, the area is 0.023 m² and the specific volume is 0.5 m/kg. The nozzle is horizontal and there is a negligible heat loss from it. Calculate: i) The velocity of the fluid at the inlet and exist; ii) The rate of flow of fluid

Q2: A nozzle is a device for increasing the velocity of a steadily flowing fluid. At the inlet to a certain nozzle the specific enthalpy of the fluid is 3025 kJ/kg, the inlet area is 0.1 m² and the specific volume is 0.19m’/kg. At the exit from the nozzle the specific enthalpy is 2790 kJ/kg, the area is 0.023 m² and the specific volume is 0.5 m/kg. The nozzle is horizontal and there is a negligible heat loss from it. Calculate: i) The velocity of the fluid at the inlet and exist; ii) The rate of flow of fluid

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

5. A fluid system undergoes a non-flow frictionless process from 4.5 ft3 to a final volume 1.5 ft3 in accordance with the defining relation P= 60/V + 30 psi, where volume in ftº. During the process the system reject 30 BTU of heat. Determine the change in enthalpy and internal energy.
52. Nitrogen with a mass of 3.82kg expands at constant pressure. The initial pressure and temperature in the piston-cylinder system are 172 kPa and 23.4°C, respectively. Because of the heat transfer, the system reached final temperature of 206.4°C. Compute for the work in kJ
Draw a figure and show the solution
Question 4. Solve with detailed solutions please. Thank You
5. Air enters a compressor at a rate of 0.5 Kgs¹ with a velocity of 6.4 ms', specific volume 0.85 m³Kg¹ and a pressure of 1 bar. It leaves the compressor at a pressure of 6.9 bar with a specific volume of 0.16 m³Kg¹ and a velocity of 4.7 ms¹. The internal energy of the air at exit is greater than that at entry by 85 KJKg'. The compressor is fitted with a cooling system which removes heat at a rate of 60 KJs¹. Calculate the power required to drive the compressor and the cross- sectional areas of the inlet and outlet pipes.
Question 2. Solve with detailed solutions please. Thank You
kg). Q3. The steam at 215 bar and 500 °C is supplied to a steam turbine. It expands to 40 bar and 280 °c. It is then reheated to 490 °C and expands to 8 bar and 270 °C. The steam coming out from the second expansion of the turbine is further reheated to 490 °C and expands to condenser pressure of 0.07 bar. The steam entering into the condenser is dry saturated. Assuming the pressure losses in first heater of 1 bar and in second heater 0.5 bar, find (a) the thermal efficiency and power developed if the flow of steam is 10 kg/s (b) the isentropic efficiency of the expansion stages. Neglect the pump work. Mis-n-n (42.8 %, 1738 kW,78.5%,95.4 %, 87%) Q4. The steam nt 100
(2.) Steam enters a turbine with an enthalpy of 1292Btu/lb and leaves with an enthalpy of 1098 Btu/lb. The transferred heat is 13 Btu/lb. what is the work in kW and in hp for a flow of 2 lb/sec? draw a figure also, and explain each step by step solution.
Determine the quality of 290 kPa of steam when 570 kJ / kg of energy is lost from the saturated vapor.a. steam quality = ......%b. what is the temperature of the steam = ..... C
b) Steam generators are a type of heat exchanges that are used in power plants to generate steam at desired pressure and temperature (Fig. Q1.b). In a steam generator, saturated liquid water at 30°C enters a 60-mm diameter tube at the volume flow rate of 12 L/s. After exchanging heat with hot gas, the water changes to steam and leaves the generator at a pressure of 9 MPa and a temperature of 400°C. During this process, the diameter of the water/steam tube does not change. Steam out Gas out Hot gas in Liquid water in Fig 2. Schematic of the steam generator in Q1.b. (i) Calculate the steam mass flow rate (ii) What is the inlet velocity of the steam? (iii) What is the exit velocity of the steam? (iv) Calculate the rate of heat transfer (in MW) required to change the phase of liquid water to steam.
Still Air, 101.3 kPa, 15°C The image above is of a jet engine flying to the right at speed 254 meters/sec through still air. The engine inlet area is 0.9 m². Determine the mass flow rate of the air into the engine in kg/sec. You answer should include one unit after the decimal place.
Q2: A turbine operating under steady flow conditions receives steam at the following state: pressure 15 bar ; specific volume 0.15 m/kg ; internal energy 2600 kJ/kg; velocity 30 m/s. The state of the steam leaving the turbine is : pressure 0.4 bar; specific volume 5 m'/kg; internal energy 2200 kJ/kg; velocity 100 m/s. Heat is lost to the surroundings at the rate of 0.2 kJ/s. If the rate of steam flow is 0.5 kg/s, what is the power developed by the turbine?