Item 9An open system with only one inlet and one exit operates at steady state. Mass enters the system at a flow rate of 8 kg/s with the following properties: h = 3245 kJ/kg, s = 8.0514 kJ/kg - K, and V = 18 m/s. At the exit the properties are as follows: h = 2139 kJ/kg, s = 8.089 kJ/kg · K, andV = 29 m/s. The device produces 8799 kWshaft work while rejecting some heat to the atmosphere at 30 °C.Part ADo a mass analysis to determine the mass flow rate at the exit.Express your answer to three significant figures.ΑΣφ |vec?SubmitRequest AnswerPart BDo an energy analysis to determine the rate of heat transfer (include sign).Express your answer to three significant figures and include the appropriate units.?ValueUnitsSubmitRequest AnswerPart CDo an entropy analysis to evaluate the rate of entropy generation in the system's universe.Express your answer to three significant figures.ΑΣφ vec?kWK

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Answered: An open system with only one inlet and…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 lbf/in.2, and 180°F, respectively; at the exit the pressure is 90 lbf/in.² The pump requires 1/25 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 Btu/lb. °R. Neglecting kinetic and potential energy effects, determine the temperature change, in °R, as the water flows through the pump. AT = °R
A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 Ibf/in.², and 180°F, respectively; at the exit the pressure is 120 Ibf/in.2 The pump requires 1/ 15 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58 Ib/ft3 and constant specific heat of 1 Btu/lb · °R. Neglecting kinetic and potential energy effects, determine the temperature change, in °R, as the water flows through the pump. AT = i °R
A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 lbf/in.2, and 180°F, respectively; at the exit the pressure is 60 lbf/in.2 The pump requires 1/ 35 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 Btu/lb · °R. Neglecting kinetic and potential energy effects, determine the temperature change, in °R, as the water flows through the pump.
Air at T₁ = 20°C and P₁ = 100 kPa enters a compressor with a mass flow rate of m= 0.025 kg/s through a circular inlet pipe having an inner diameter of D₁ =1 cm. The compressor operates at steady state. The mechanical power input to the compressor is W = 3.5 kW. Air exits the compressor at T₂ = 50°C and P₂ = 650 kPa. The diameter of the exit pipe is large and therefore the velocity of the air leaving the compressor is small and its kinetic energy negligible. However, the kinetic energy of the air entering the compressor is not negligible. The outlet of the compressor is connected to a rigid storage tank having a volume of Vtank = 1.5 m³. The tank initially contains air at Pini = 100 kPa. The pressure of the air within the tank rises as it is filled, but heat transfer between the tank and the surroundings keeps the temperature of the air in the tank always at Ttank = 25°C. This compressor is not adiabatic. Assume that the air obeys the ideal law with R = 287 J/kg-K. Assume that the…
Air at Ti = 20°C and P₁ = 100 kPa enters a compressor with a mass flow rate of m= 0.025 kg/s through a circular inlet pipe having an inner diameter of D₁ =1 cm. The compressor operates at steady state. The mechanical power input to the compressor is We 3.5 kW. Air exits the compressor at T₂ = 50°C and P₂ = 650 kPa. The diameter of the exit pipe is large and therefore the velocity of the air leaving the compressor is small and its kinetic energy negligible. However, the kinetic energy of the air entering the compressor is not negligible. The outlet of the compressor is connected to a rigid storage tank having a volume of V tank = 1.5 m³. The tank initially contains air at Pini = 100 kPa. The pressure of the air within the tank rises as it is filled, but heat transfer between the tank and the surroundings keeps the temperature of the air in the tank always at Ttank = 25°C. This compressor is not adiabatic. Assume that the air obeys the ideal law with R = 287 J/kg-K. Assume that the…
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