A steam turbine operates with 1.6 MPa and 350°C steam at its inlet and saturated vapor at 30°C at its exit as shown in Fig. Q2(b). The mass flow rate of the steam is 22 kg/s, and the turbine produces 12,350 kW of power. By applying the first law of thermodynamics on the steady flow device compute the rate at which heat is lost through the casing of this turbine. 1.6 MP. 350°C 22 kgs Heat Turbine 30C sat. vapor

A steam turbine operates with 1.6 MPa and 350°C steam at its inlet and saturated vapor at 30°C at its exit as shown in Fig. Q2(b). The mass flow rate of the steam is 22 kg/s, and the turbine produces 12,350 kW of power. By applying the first law of thermodynamics on the steady flow device compute the rate at which heat is lost through the casing of this turbine. 1.6 MP. 350°C 22 kgs Heat Turbine 30C sat. vapor

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

Q3: A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (a) Find the velocity at the nozzle exit. (b) If the inlet area is 0.1 m and the specific volume at the inlet is 0.19 m/kg, find the rate of flow of fluid. (c) If the specific volume at the nozzle exit is 0.5 m/kg, find the exit area of the nozzle.
Q3: A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (a) Find the velocity at the nozzle exit. (b) If the rate of flow of fluid is 31.6 kg/s and the specific volume at the inlet is 0.19 m³/kg, find the inlet area. (c) If the specific volume at the nozzle exit is 0.5 m/kg, find the exit area of the nozzle.
1 kg of steam at initial conditions of 5.1 MPa and 370 °C expands in a turbine until it becomes saturated. It is withdrawn and reheated to 340°C. After further expansion in the turbine to 160 , part of the steam is extracted for feedwater heating. The remaining steam expands to the condenser pressure of 0.018 MPa. For 1kg of steam, find Wnet, Ec, Ee and the ideal steam rate. Remember:1. For values taken from the steam tables: Use them as is, do not round off.2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places.PLEASE USE THE STEAM TABLE PROVIDED: https://docs.google.com/document/d/1crebk95lXFEAR5d6Y6LymXJNraO9WLgtNjquSlVOvVs/edit
A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (i) Find the velocity at the nozzle exit. (ii) If the inlet area is 0.1 m2 and specific volume at inlet is 0.19 m3/kg, find the rate of flow of fluid (iii) If the specific volume at the nozzle exit is 0.5 m3/kg, find the exit area of the nozzle.
200Kg/min superheated steam at 40 bar and 350C enters a turbine through a 7.5cm ID pipe. It exits at 5bar as saturated steam through a 5cm ID pipe neglect the change in potential energy of the system. What is the temperature of the outlet saturated system? How much energy is transferred to or from the turbine?
Air at 15 degree Celsius and 95 kpa enters the diffuser of a jet engine and steadily with a velocity of 250 m/s. The inlet area of the diffuser is 0.5 m^2. The air leaves the diffuser with a velocity that is very small compared with the inlet velocity. Find the mass flow of air, temperature of air leaving diffuser, power and rate of heat transfer within diffuser.
Steam @ 400 C and 1600 kPa enters a nozzle at a velocity of 28 m/s and leaves as saturated vapor at 100 kPa, steam experiences a heat loss of 46.6 kg/s to the surroundings which are at 25 C. What is the actual exit velocity (m/s)?
Q6. A 500 W heater is used to melt 5 kg of solid ice at -30°C to gas at +130°C at a constant pressure of 100 kPa. (a) Show the process on the p-T-v, p-v and T-v diagrams (b) Find the change in the total volume of the water (c) Find the energy the heater must provide to the water (d) Find the time the process will take assuming uniform T in the water
Water vapor enters a continuous flow turbine with 6 MPa pressure, 450oC temperature and 80 m/s velocity with a flow rate of 900 m3/h, saturated at 20 kPa pressure.It comes out as steam at a speed of 140 m/s. There is a heat transfer of 5 kW from the turbine to the environment and the turbine inlet section is 150 cm above the outlet section.as it is;a) Find the power produced in the turbine. b) Calculate the adiabatic efficiency of the turbine.
1 kg of steam at initial conditions of 5.1 MPa and 370 °C expands in a turbine until it becomes saturated. It is withdrawn and reheated to 340°C. After further expansion in the turbine to 160 , part of the steam is extracted for feedwater heating. The remaining steam expands to the condenser pressure of 0.018 MPa. find Wnet, Ec, Ee and the ideal steam rate. Remember, 1. For values taken from the steam tables: Use them as is, do not round off. 2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places. 3. PLEASE USE THE STEAM TABLE PROVIDED: https://drive.google.com/drive/folders/15t3WMv7xSTHmwXWXp0X2ZV6aYWhXuRCS?usp=sharing
A 12" x 14" horizontal single-acting reciprocating air compressor is driven by a 50 kW motor that operates at 520 rpm, drawing in air at 14 psia and 88 F, and discharging it at 57.6 psia. The compression and re-expansion process are polytropic with n = 1.33. Mechanical efficiency = 85 %, compression efficiency = 75% Calculate: a). the mass of air (lb/min) discharged b). volumetric efficiency (%) c). the percent clearance (%)
can you please solve this for me, thanks. 10 kg/s of steam (H2O) enters a turbine at 10 m/s and a specific enthalpy of 3500 kJ/kg and leaves at an outlet 10m below the inlet with a specific enthalpy of 2500 kJ/kg and a velocity of 20 m/s. Assume steady-state steady-flow. If the heat lost from the turbine is 20% that of the turbine work, determine a.) the turbine horsepower. If the turbine is coupled to a generator with a 90% electrical efficiency, and the turbine horsepower has an 80% mechanical efficiency, b.) how much income will a power plant generate in one year if the electrical energy is sold at PhP 3.51 per kW-hr? (Hint: Mechanical efficiency = actual turbine work / ideal turbine work. Electrical efficiency of a generator = electrical output / actual turbine work.)