Air is used as the working fluid in a turbine. At the inlet, the air is at 1100 K, 1050 kPa. It is flowing at a rate of 10 kg/s, having a velocity of 30 m/s. At the outlet, the air is 500 K, 98.61 kPa, and flowing at 45 m/s. Assuming that the specific heat of the air is constant (at the average temperature) during the process, what is the power output of the turbine in MW? MW [(x)--Niel Crews, 2013

Air is used as the working fluid in a turbine. At the inlet, the air is at 1100 K, 1050 kPa. It is flowing at a rate of 10 kg/s, having a velocity of 30 m/s. At the outlet, the air is 500 K, 98.61 kPa, and flowing at 45 m/s. Assuming that the specific heat of the air is constant (at the average temperature) during the process, what is the power output of the turbine in MW? MW [(x)--Niel Crews, 2013

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

Q1/Water enters a boiler at (323°K & 5 Mpa), and leaves as steam at (673°K & 5 Mpa). The heat transferred to the water is 297.822 kJ/s, determine the mass flow rate of water and the work done by the Boiler?
Steam engine isentropically expands 8.019kg/s of steam from 0.68 MPa, 220 degree celcius. The exhaust is dry and saturated. Determine the work in steady flow process in kW.
40°C 4. A mixing chamber receives 5 kg/min of ammonia as saturated liquid at -20°C from one line (1) and ammonia at 40°C, 250 kPa from another line (2). The chamber also receives 325 kJ/min of energy as heat transferred from a 40°C reservoir as shown in figure. At the outlet, ammonia leaves as saturated vapor at -20°C. Find the mass flow rate in second line and calculate the total entropy generation in the process. Is this process possible?
Steam engine isentropically expands 5.84 kg/s of steam from 0.68 MPa, 220 degree celcius. The exhaust is dry and saturated. Determine the work in nonflow process in kW.
Steam @ 500 C and 3500 kPa enters a nozzle at a velocity of 30 m/s and leaves as saturated vapor at 100 kPa, steam experiences a heat loss of 128 kg/ş to the surroundings which are at 25 C. What is the actual exit velocity (m/s)?
A turbine receives 8 kg/s of air at 9 MPa, 677 C and 60 m/s (pressure, temperature and velocity). It discharges the air at a temperature of 77 C and a velocity of 15 m/s. In addition, there is heat transfer from the turbine to the surroundings for 150 kW. Find the power produced by the turbine in kW and its isentropic efficiency. You may use specific heats at the average temperature.
Refrigerant-134a,It enters an adiabatic compressor at a temperature of 10 o C and a pressure of 140 kPa and exits at a pressure of 700 kPa and a temperature of 60 oC,The power consumed in the compressor is 0.5kW.If we neglect the changes in kinetic and potential energies a) the isentropic efficiency of the compressor b) Calculate the second law efficiency of the compressor.Take the ambient temperature of 27oC
Water vapor enters a turbine at 6 MPa pressure and 800 ° C temperature and leaves at 20 kPa pressure. Since the heat loss from the turbine with an izanopic efficiency of 95% is 49.7 kJ / kg, a) Find the actual amount of work (kj / kg) produced by the turbine. b) Find the reversible work (kJ / kg) between the inlet and outlet of the turbine. (Take the ambient temperature 20 ° C.)
Ex3) The compressor in a plant (see Fig. 4.9) receives carbon dioxide at 100 kPa, 280 K, with a low velocity. At the compressor discharge, the carbon dioxide exits at 1100 kPa, 500 K, with a velocity of 25 m/s, and then flows into a constant-pressure aftercooler (heat exchanger), where it is cooled down to 350 K. The power input to the compressor is 50 kW. Determine the heat transfer rate in the aftercooler. ++ Compressor -W
The power of a steam turbine in a thermal power plant is 60 MW. Water vapor enters the turbine at 3MPa pressure, 4000C temperature and 50 m / s speed, 10 kPa pressure, 0.9 dry degree and 200 m / s speed leaves the turbine. Considering the turbine as adiabatic; 1-Find the mass flow of steam 2-Find the turbine outlet cross-sectional area, its ratio (A2 / A1) to the inlet cross-sectional area.
Find the minimum flow of cooling water per kWh if its temperature is only allowed to increase by10°C.
I need help on the following question: The vapour compression cycle (picture provided), utilises the refrigerant R134a flowing at 0.05 kg s-1. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, then: 1. You need to determine the theoretical input power to the compressor and the heat transfer (Φ) to theevaporator. Take the enthalpies h1, h2, and h3 to be 238.41, 263.68 and 81.5 kJ kg-1 (use the 'NH3 Refrigeration Table' where you can find online). 2. You need to determine the coefficient of performance based on your answer to the previous question (1). 3. You need to determine the compressors mechanical efficiency.