Water is heated in a closed container with rigid walls that is a perfect cube (1 m x 1 m x 1m). The initial volume of the water (liquid + vapor) is 1 m'. The initial temperature ofthe water is 100 °C and it has a quality of 0.3. It is heated until it reaches a final pressureof 700 kPa.a. Sketch the process on the P V diagram.b. What is the work done by the water during this heating process in kJ?c. What is the final temperature of the water?d. What is the heat required in order for this process to occur in kJ?PV

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Answered: Water is heated in a closed container…

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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An ideal gas is changed from p1 = 1bar, v1= 10m3 to p2 =10 bar , v2 = 1m3 , calculate Q & W for the follwing process: a- Isothermal process. b- adiabatic compression followed by cooling process at constant pressure. c- Heating at constant volume followed by cooling at constant pressure? Take Cp= (5/2)R & Cv=(3/2) R
A rigid tank with volume of 12 m3 contains a water-vapor combination with a pressure of 400 kPa and a quality of 66%. Find the mass of vapor at state 2 if the pressure is lowered to 300 kPa.
MERMAL SC Q2. Determine the phase in a system consisting of water at the following conditions and sketch T-v diagrams showing the location of each state. (Label the value P, Tsat, Vr and vg on diagram) p=5 bar, v=0.001 m²/kg a.
Air occupying a volume of 12 liters at 35 0C is compressed adiabatically to a volume of 4 liters. It is then allowed to expand under isothermal conditions to its original volume. a) Show the process on a Pressure-Volume diagram b) Calculate the final temperature and pressure of the air. Assume γ = 1.44
0.56 kg of water in a piston cylinder device as shown initially the water is at T, = 120 °C with volume V, = 36 L (State 1). Heat is then added such that all the water in the cylinder is saturated vapor and the piston just touched the spring without exerted any force on the spring (State 2). Then additional heat is added to the system such that the temperature is T, 600 °C and the pressure is P,= 400 kPa (State 3). 3 Po 3 1) Find the total work (from state 1 to state 3, in kW). O 147.73 2) O Not listed Qin 111.16 133.48 107 23 156.11 125.24 2) Find the total heat transfer for the process (from state 1 to state 3, in kW). 1424.6 O Not listed O 1486.0 O 1585.4
Let's compute how much energy it takes to make a cup of coffee or tea. Eight ounces of water has a mass of about 0.22 kilograms. How much heat must be transferred to the water to raise its temperature from 20°C to the boiling point, 100 C?
b) A piston-cylinder system mounted vertically and has a partition on it. It contains 5 kg of saturated liquid water at 200 kPa. Heated system causes some of the water evaporates and the piston begins to move. When the piston is touching blockers, which was conceived by the volume of water is 1000 liters. Water is heated until the pressure increased four times. Show the process involved in p-v and T-v diagrams.
Edición P3. A piston-cylinder system contains 1 L of water at 105°C and 85% quality. I know adds energy, causing the plunger to travel until it makes contact with a spring of constant K = 100 N/mm, just at this moment, the volume of the water is 50% greater than the initial. The energy transfer continues until the volume is 1.7 L, and the temperature of the water reached 600°C. Make a schematic of the system according to the statement and calculate the water pressure when T = 600°C. Answer: 198.16kPa
Compute this sample problem Problem 3.5 1.74 cubic meter of a perfect gas at 1.2 bar and 15.8°C is compressed to a volume of 0.87 m³ and a pressure of 5.1 bar. Determine the final temperature in °C.

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