have a specific volume of 0.5 m3/kg.3. A steam power plan. A 1.5 kg of water is delivered to the boiler per second. Water entering the boilerhas an enthalpy of 800 kJ/kg and a velocity of 10 m/s. The water receives heat at a rate of 2200 kJ/kg ofwater. After passing through the turbine, the steam has a velocity of 50 meters per second and anenthalpy of 2520 kJ/kg. The turbine outlet is 5 meters above the boiler inlet. The boiler loses 1800 kJ/mof heat every minute, while the turbine loses 600 kJ/min. Calculate the turbine's power capacity bytreating the boiler and turbine as a single unit.4. A petrol engine develops 50 kW brake power. The fuel and air flow rates are 10 kg and 107 kg/hr. The

Applying steady flow energy equation considering boiler and turbine as single unit -…

Answered: 3. A steam power plan. A 1.5 kg of…

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

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This is part one of a two-part problem. Water at 2.0 kg/s enters the boiler at 40°C and 2000 kPa and exits the boiler at 2000 kPa. If the heat transfer rate into the boiler is 8 000 kW, what is the specific enthalpy (h) at the exit of the boiler? Boiler Turbine
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3 again
Steam at 2000 psia and 1000°F enters the high-pressure turbine of a reheat cycle and is expanded adiabatically and reversibly to 200 psia. The steam is then passed through the superheater, from where it exits at the 950°F temperature. The low-pressure turbine expands the steam reversibly and adiabatically to 1 psia. If 7 lbm/s of steam is used and the circulating pump is assumed to operate ideally, the power produced, the added heat rate, and the cycle efficiency are: a) 7049,76 hp ; 12124,5 Btu/s ; 42,2% b) 7400,77 hp ; 11553,7 Btu/s ; 45,1% c) 8350,08 hp ; 13089,6 Btu/s ; 49,8% d) 7944,76 hp ; 11834,2 Btu/s ; 47,6%
QI/Calculate the power in kilowatts of the gas turbine power plant has a greatest temperature of 700°C and a pressure ratio of 10. The isentropic efficiencies of the turbine and compressor are 0.85 and 0.82 respectively. The mass flow rate of the air that inlet to the compressor is 15 kg/s at 15 °C. At the expansion process take Cp= 1.11 kJ/kg:K, y=1.333, and at the compression process take c,= 1.005 kJ/kg K, and y =1.4
A purifying air cooler is composed of electronic air filter and a water cooling system. The air passing through the filter is cooled by the water flowing through the cooling pipe located inside the system. Water enters the pipe with a speed of 0.92 m/s at a temperature of 18 C. The water then exits the pipe at 30 C. In the current environment, the purifying air cooler is able to absorb heat from the atmosphere at the rate of 1.654 kW while simultaneously cooling the electronic components inside the device which produces heat at a rate of 0.845 kW. Determine the internal circumference of the pipe to be used for the purifying air cooler. *be careful when selecting the system boundary Answer in meters
Question 3 Consider the turbocharger of an internal combustion engine. The exhaust gases enter the turbine at 450°C at a rate of 0.02 kg/s and leave at 400°C. Air enters the compressor at70°C and 95 kPa at a rate of 0.018 kg/s and leaves at 135 kPa. The mechanical efficiency between the turbine and the compressor is 95 percent (5 percent of turbine work is lost duringits transmission to the compressor). Using air properties for the exhaust gases, determine:(a).The turbine power output, compressor power input, air temperature at the compressor exit,(b).The air temperature at the compressor for the case of isentropic process and isentropic efficiency of the compressor.
The steam entering the turbine in a coal-burning power plant is heated to 500 celsius. The steam is cooled and condensed to water at 80 celsius. Use the formula in the footnotes of 7-2 in your book to find the ideal efficiency of the power plant. Remember that you must convert Celsius temperatures to Kelvin before using the formula. Show all your work below.
A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 60 TR. The evaporating temperature is -10 °C and the condensing temperature is 42 °C. Determine the heat rejected by the condenser in kw. Enthalpy of condenser entrance = 440 KJ/kg, exit = 254 KJ/kg. Evaporator exit = 406 KJ/kg, evaporator entrance = 254 KJ/kg.

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