(LO5) In the following turbine designs, which two (2) are not used in hydroelectricy generation? a....
1. Which of the following is not true for steam nozzles? a. In convergent nozzle there is divergent after throat b. Convergent-divergent nozzle has higher expansion ratio c. Convergent-divergent nozzle produces steam at higher velocities as compared to a convergent nozzle d. All of the above 2. The steam turbine can be governed by the following methods except a. Throttle governing b. Nozzle governing c. By pass governing d. Reaction governing 3. Which of the following is a steam turbine?...
Question 2 Which of the following has the highest thermal efficiency? O a simple steam turbine power plant b. steam turbine power plant including reheating and regeneration c. open cycle gas turbine power plant d. closed cycle gas turbine power plant e combined steam and gas turbine power plant
Problem 1 - Gas Turbine Engine. Assume the gas turbine engine operates on basic non-ideal Brayton cycle with the following specifications Inlet Condition: Dry air at 537 R and 14.7 psia Pressure Ratio: 24.2 Actual Exhaust Temperature: 950 F Compressor and Turbine Efficiency: 85% Actual Power Output 34 MW Using given/assumed values, determine: a) firing temperature, b) cycle efficiency, c) air mass flow rate. Problem 2- HRSG. Assume the HRSG is used to produce saturated steam at 600 psia using...
Design a hydropower scheme using Pelton wheel turbine(s) to generate 2 MW of power. Assume an efficiency for the turbine and justify any coefficients and/or parameters that is used in the design. The hydropower scheme should provide the following information: (a) Volumetric flow rate of the turbine (b) Number of jets (c) Velocity of the jet (d) Size of each jet (e) Size of the Pelton wheel
Two dinerent inventors come up with two wind turtine designs with these claimed efficiencies: Turbine A: 45%. Turbine B: 65%. Which of two claims is true? Caim Turbine A Claim Turbine B
#4. To operate a steam turbine in part-load output, a throttling valve is used as shown. The valve reduces the pressure of steam before it enters the turbine. The state of steam in the supply line remains fixed at 2 MPa, 500°C and the turbine exhaust pressure remains fixed at 10 kPa. Assuming the turbine to be adiabatic and reversible, determine (a)the full load specific work output in kJ/kg, (b)the pressure of the steam must be throttled to for 75%...
there is table provided for help for the type of turbine
TIPO Min Max 1 Jacto PELTON 0.16 2 ou mais Jactos 0.30 0,10 FRANCIS Lenta 0,26 0,50 Normal 0,50 1,00 TURBINAS Rápida 1,00 2,50 5,50 KAPLAN HELICES 1,70 3,00 AXIAIS (de gás) 0.25 1,80 Centrífugas 120 0,15 ВОMBAS Mistas 1,20 2,50 Hélices 7,00 Radiais VENTILADORES 0.40 2,00 Ахiais 1,50 3. At a hydroelectric plant under design, a 40 m drop is available to drive three turbine-generator groups, for a...
Problem 2/2 (50%) -The gas-turbine cycle of a combined gas-steam power plant has a pressure ratio of 12. Air enters the compressor at 310 K and the turbine at 1400 K. The combustion gases leaving the gas turbine are used to heat the steam at 12.5 MPa to 500 C in a heat exchanger. The combustion gases leave the heat exchanger at 247"C. Steam expands in a high pressure turbine to a pressure of 2.5 MPa and is reheated in...
A steam power plant is intended to be used for heating as well as power generation. The net power required from this installation is 5 MW and the heating power is 12 MW. While the steam produced at 4 MPa, 440 degrees Celsius in the boiler expands in the isentropic turbine, the steam to be used in heating is drawn from the turbine at 140 kPa and it is condensed in the heating installation and mixed with water from the...
Question 1 Not yet answered Marked out of a0.00 F Flag question At a power plant, superheated steam at 560C is used to drive a turbine for electricity generation. The steam is discharged to a cooling tower at 38°C. Calculate the efficiency of the plant. Select one or more: A. 99.8% B. 53% C. 63% D. 35% E. 21%