The diagram illustrates a system where a turbine is connected to an active steam pipeline through a valve, enclosed within a control volume boundary. Steam from the pipeline, initially at 550°C and 10 MPa, flows through the turbine into an initially evacuated tank with a volume of 0.64 m³. During emergencies, this system allows for the release and utilization of steam energy.The process explained involves opening the valve to allow steam to flow into the tank, which is initially void of any substance (evacuated). The valve is subsequently closed when the tank's pressure reaches 1.6 MPa and the temperature is at 300°C. The entire process is assumed to be adiabatic, meaning no heat is lost or gained by the system's surroundings.The educational question posed asks for the calculation of the work generated by the turbine throughout this adiabatic process.**Calculation Question:**In case of emergencies, steam flows into the turbine and fills the tank as described. Calculate the work generated from the turbine under these conditions. - **Parameters:** - Initial steam conditions: 550°C, 10 MPa - Tank volume: 0.64 m³ - Final tank conditions: 1.6 MPa, 300°C - Process: Adiabatic**Answer required in: kJ**

Answered: Image /qna-images/answer/e96c9e32-c3ac-410f-b7d9-e4e45b5d0f46.jpg

Answered: Steam Turbine KJ Initially evacuated…

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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As the refrigerant as shown in the figure, R134a fluid is used in a commercial refrigerator. The refrigerant leaves the evaporator at a temperature of -33.5°C (239.65 K) and a pressure of 60 kPa. It is then compressed to a pressure of 1.2 MPa and a temperature of 64°C (337.15 K). In the water-cooled condenser, the refrigerant is cooled to 41°C (314.15 K). Water enters the condenser at 18°C and leaves at 26°C. In this context; *Calculate the COP value and the maximum (maximum) COP value of the refrigerator. (I ask you to write with the keyboard so that I can understand the answers. Thank you)
Problem 4 An air compressor is to be powered by a direct-coupled steam turbine (as shown in the figure below) that is also driving a generator. Steam enters the turbine at 13 MPa and 500 C at a rate of 20 kg/s and exits at 15 kPa and a quality of 0.85. Air enters the compressor at 98 kPa and 295 K at a rate of 7 kg/s and exits at 1 MPa and 600 K. Calculate the net power delivered to the generator.
As the refrigerant as shown in the figure, R134a fluid is used in a commercial refrigerator. The refrigerant leaves the evaporator at a temperature of -33.5°C (239.65 K) and a pressure of 60 kPa. It is then compressed to a pressure of 1.2 MPa and a temperature of 64°C (337.15 K). In the water-cooled condenser, the refrigerant is cooled to 41°C (314.15 K). Water enters the condenser at 18°C and leaves at 26°C. In this context; *Calculate the degree of dryness (quality) of the refrigerant at the evaporator inlet [%]. (I ask you to write with the keyboard so that I can understand the answers. Thank you)
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.
A commercial airliner is flying at an altitude where the temperature and pressure of the air are -50°C and 26.5 kPa. An engine-driven compressor will take this air at T= -50°C, P₁ = 26.5 kPa and compress it to P₂ = P₂ = 85.0 kPa to pressurize the cabin. The air will be very hot when it exits the compressor, so a heat exchanger will be used to cool the air to T, = 20°C before it enters the cabin. Cold air at T₁ = -50°C will be used in the heat exchanger to cool the cabin air, and this air will exit the heat exchanger at T = 20°C (this air will be used to heat the cargo bay). The mass flow rate of the air delivered to the cabin is 0.80 kg/s and the compressor efficiency is 75%. Model the air as an ideal gas having constant specific heat, using 300 K values from Cengel's tables posted on Canvas. a) Find the actual temperature of the air exiting the compressor and the power input to the compressor (answers: 67.6°C and 94.5 kW). b) Find the rate of heat transfer in the heat exchanger and…
CO2 is needed in a surgical suite for abdominal laparoscopic surgery. You have already designed a nozzle to step down the pressure from the gas cylinder to the delivery hose. The well-insulated delivery hose has a 2.2 mm inner diameter. The inlet conditions to the delivery hose are 103 psia and 17°C. Typically, the surgeon uses 4 to 6 L/min of gas at pressures between 10 to 20 mm Hg to inflate the peritoneal cavity; however, the delivery system must be able to provide flow rate of 17.5 L/min at 20.0 mm Hg for safety. The surgeon will use a pin valve to control the flow rate and maintain the operating space. The gas temperature should not be any colder than 10°C when delivered to patient, or tissue damage might occur. Determine the acceptable delivery hose length to meet the surgical criteria. State assumptions.
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Refrigerant-134a at 1 MPa and 908C is to be cooled to 1 MPa and 308C in a condenser by air. The air enters at 100 kPa and 278C with a volume flow rate of 600 m3/min and leaves at 95 kPa and 608C. Determine the mass flow rate of the refrigerant. V₂ = 600 m³/min |P3= 100 kPa| T3 = 27°C R-134a P₁ = 1 MPa T₁ = 90°C ₪ | P4 = 95 kPa T₁ = 60°C P₂ = 1 MPa T₂ = 30°C
A boiler produces 5.4 tonnes/hour of steam at a pressure of 1.5 MPa and a temperature of 350°C. Feedwater enters at a temperature of 44.5°C. At exit from the economizer part of the boiler the temperature is 93.5°C. At exit from the evaporator part of the boiler the steam is 90 A % dry. Energy is supplied by 600 kg of coal per hour, which has a calorific value of 32 MJ/kg. The A/F ratio is 15 1. The temperature of the flue gas at exit from the the economizer part of the boiler is 210°C. The average specific heat at constant pressure of the in the economizer is 1045 J/kg.K. When the ambient temperature is 24°C : 7. IS flue gas 7.1 Calculate the efficiency of the boiler. [83.3 %] Calculate the equivalent evaporation from and at 100°C per unit mass of fuel. |11.9| Draw up an energy balance, on a kJ/kg coal basis, with percentages of the total energy supplied. Jeconomizer 6.8 %, evaporator 62 %, superheater 15.5 %, to atmosphere 9.7 %, other 7.2 7.3 losses 7 %]

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