Problem 1 (20 points): Consider the following piston-cylinder assembly that contains water as its workingfluid. Stops in the cylinder walls prevent the fluid volume from exceeding a maximum value of Vmax = 3.0 m³.The fluid has initial properties of P₁ = 100 kPa, V₁ = 2.00 m³, and T₁ = 125.0 °C and is subjected to input heatuntil it reaches a maximum temperature of Tƒ= 425.0 °C.Determine:(A) the final pressure, Pf(B) the total work done by the fluid, Wtotal(C) the total required heat input, QtotalQ

Answered: Image /qna-images/answer/8ea2b29f-4afa-4281-b241-f94f74cc0bc4.jpg

Answered: Problem 1 (20 points): Consider the…

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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A plant located at an altitude of 925 m has an open feedwater heater located 2.76 m above the pump intake. The water in the heater has a temperature of 65ºC. If the head loss in the suction line is 0.8 m. Determine: a. Atmospheric pressure head, in meter b. Vapor/saturation pressure head, in meter c. The Net Positive Suction Head.
A 2-stage air compressor operates between constant pressure limits of 0.098 MPa and 1.103 MPa. The swept volume is 14.4 m3/min. Due to failure of the cooling water supply in the intercooler, air is passed to the high pressure cylinder without reduction in temperature. Using PV1.3 = C, determine the percentage increase in power.
A tank contains R134a initially at 3 degrees Celsius with a quality of 0.25. the pressure is held constant by nitrogen gas acting against a flexible bladder as shown. The valve is opened between the tank and a supply line carrying R134a at 975kPa, 118 degrees Celsius. The pressure regulator allows the pressure in the tank to remain constant as the bladder expands. The valve between the line and the tank closed at the instant when it contains 20kg of R134a with a quality of 0.95. if the entropy generation amounts to 1.025 kj/k, determine: Initial mass of r134a in the tank (kg) Heat transferred (kj) Is heat absorbed or released in the process Show mass, energy and entropy balance equations when starting Initial state, state at inlet, final state H1,s1,h2,s2
What is a K system?
A 2 stage compressor operates between constant pressure limits of 98.6 kPa and 1.103 MPa. The swept volume of the low pressure piston is 0.142m^3. Due to failure of the cooling water supply to the intercooler, air is passed to the high pressure cylinder without reduction in temperature. Using PV^1.2 = C. Determine the percentage increase in power.
DESCRIBE THE ENERGY ANALYSIS OF STEADY-FLOW SYSTEMS
For a 10-ton-capacity refrigeration system, the pressure of refrigerant in the evaporator is 210 kPa, whereas in the condenser it is 800 kPa. If R-134a is used under saturated conditions, calculate the theoretical power required to operate the compressor.
When an evaporator experiences a heat- load increase, the suction pressure A. remains constant.
Ammonia refrigerant circulates in a refrigeration system with one compressor serving two evaporators where one evaporator carries a load of 35 kW at 10°C and the other a load of 70 kW at -5°C. A back pressure valve reduces the pressure in the 10°C evaporator to that of the -5°C evaporator. The condensing temperature is 37°C. Calculate the mass of the refrigerant in kg/s. (Use h₂ = h1 + 203.7586 kJ/kg)
What does it mean for an engineering device that has steady-flow?
Determine the electrical power supplied to a boiler when the temperature of the entering water is 20 C and the exiting temperature is 89 C. The flow of.the pressured water is 2 Kg/s. There is a negligible pressure drop through this boiler and it operates at a constant pressure of 3 bars. The specific heat is c = 4,370 J/(Kg K). There is a 1.5(105 ) W rate of heat loss from the boiler during this process to a surrounding at 293.2 k. Consider steady state conditions Calculate the exergy destroyed in the process described by problem 1.4. The exergy of the fuel entering this process is 51.82 MJ/Kg. The dead state temperature is 293.2 K and pressure is 1 bar. The products of combustion leave this process at the dead state.
1) Water vapor with a flow rate of 20000 kg / h enters the condenser of a power plant at a pressure of 20 kPa and a dryness degree of 95 percent. In the condenser, there is heat transfer to the river water flowing through the pipes. The temperature rise of the river water is limited to 10'C to prevent thermal pollution. Since the state of the water at the condenser outlet is saturated liquid at 20 kPa pressure, what should be the flow rate of the cooling water.

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