**Problem Description:**Consider a system with 3 kg of water initially at 300 kPa and 200 degrees Celsius (state 1), supporting a free-floating piston. Heat is removed from the water until the piston reaches a set of stops (state 2), at which point the water occupies half its initial volume. The system of water continues to lose heat until it reaches a final temperature of 100 degrees Celsius (state 3).Determine the following:(a) Determine the work done between states 1 and 2.(b) Determine the work done between states 2 and 3.(c) Determine the net heat transfer from states 1 to 3.**Explanation:**1. **Initial State (state 1):** - Mass of water: 3 kg - Pressure: 300 kPa - Temperature: 200 degrees Celsius2. **Intermediate State (state 2):** - The system undergoes cooling until the piston reaches a set of stops. - At this point, the volume is half of the initial volume. 3. **Final State (state 3):** - The system continues to lose heat until it reaches a temperature of 100 degrees Celsius.To address the questions:- **(a) Work done between states 1 and 2:** You need to calculate the work associated with volume change as the piston moves. Use the appropriate thermodynamic equations and the properties of water to find the work done during this process.- **(b) Work done between states 2 and 3:** Since the piston is at the stops, there is no volume change, implying that the work done is zero in this process.- **(c) Net heat transfer from states 1 to 3:** By considering the first law of thermodynamics and the properties of water, calculate the net heat transfer from state 1 to state 3.This problem involves principles of thermodynamics, specifically the first law of thermodynamics and properties of water in different states (liquid, vapor, or a mixture of both). Ensure you have access to the relevant thermodynamic tables or software to find the required properties of water at different states for precise calculations.

Answered: Image /qna-images/answer/508981a7-4dc4-4317-b1cd-cbbba985b096.jpg

3 kg of water, initially at 300 kPa and 200 degrees Celsius (state 1), supports a free floating piston. Heat is removed from the water until the piston reaches on a set of stops (state 2), at which point the water occupies half its initial volume. The system of water continues to lose heat until it reaches a final temperature of 100 degrees Celsius (state 3). Determine the following: (a) Determine the work done between states 1 and 2. (b) Determine the work done between states 2 and 3. (c) Determine the net heat transfer from states 1 to 3.

3 kg of water, initially at 300 kPa and 200 degrees Celsius (state 1), supports a free floating piston. Heat is removed from the water until the piston reaches on a set of stops (state 2), at which point the water occupies half its initial volume. The system of water continues to lose heat until it reaches a final temperature of 100 degrees Celsius (state 3). Determine the following: (a) Determine the work done between states 1 and 2. (b) Determine the work done between states 2 and 3. (c) Determine the net heat transfer from states 1 to 3.

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

See similar textbooks

Similar questions

An insulated, rigid tank is divided into two equal parts by a membrane. (Figure 1) At the beginning, one part contains 9 kg of nitrogen at 500 kPa and 50 °C, while the other part is completely evacuated. The membrane is punctured and the Part A gas expands into the entire tank. Use the PG model. Determine the final temperature (T3). Express your answer to the nearest integer. HA Value Units Submit Request Answer Part B Determine the final pressure (p2 ). Express your answer to the nearest integer. ΑΣφ vec kPa Submit Request Answer
Shown in the figure, an insulated rigid tank is divided into two equal parts by a partition. Initially, one part contains an ideal gas, and the other part is evacuated. The partition is then removed, and the gas expands into the entire tank. At the initial state, mass is m, the initial pressure is p1, initial temperature is T1, and the initial volume is V1. Select the simplified energy balance equation if the the whole tank is selected as the system.____ A. B. C. D.
It is a hot day in Atlanta and you and your friends bought an ice cream maker. The unit consists of a bowl and a base that rotates the bowl around a stationary mixing paddle. The walls of the bowl contain an unknown mixture that absorbs heat from the ice cream. The bowl must be frozen (-20°C) before use. Unfortunately, your friends have lost the instructions and can't remember how long to operate the unit. You tell them not to worry since you have mastered energy conservation problems and can calculate the amount of time required to freeze the ice cream. Looking at the box, you find the specifications for the unit: a) Inner surface area of freezing bowl: 600 cm2; b) Heat transfer coefficient for bowl:h = 0.025 J / (cm2 s .°C); c) Power required to stir the bowl (100% efficiency):25 W; d) Amount of ice cream mixture added: 1 kg; e) The rate of heat transfer is between the bowl and the milk. You know that solutes lower the freezing point of water. Assume that the freezing point is…
6. Two kilograms of water is contained in a piston/cylinder as shown in figure 3 with a massless piston loaded with a linear spring and the outside atmosphere. Initially the spring force is zero and P1 = P0=100 kPa with a volume of 0.2 m'. If the piston just hits the upper stops, the volume is 0.8 m and T = 600 C. Heat is now added until the pressure reaches 1.2 MPa. Show the P-V diagram, and find the work and heat transfer for the process. m, Fig. 2 Fig. 3
Q1: A horizontal piston/cylinder arrangement is placed in a constant-temperature bath. The piston slides in the cylinder with negligible friction, and an external force holds it in place against an initial gas pressure of 16 bar. The initial gas volume is 0.03 m. The external force on the piston is reduced gradually, and the gas expands isothermally as its volume triples. If the volume of the gas is related to its pressure so that PV2 is constant, what is the work done by the gas in moving the external force?
Q-1(c): Consider a case in which the air inside the pressurized cabin of a jet transport flying at some altitude of pressure, 0.9 atm and of temperature, 15°C. The total volume of air at any instant inside the cabin is 1800m3. If the air in the cabin is completely recirculated through the air conditioning system every 20 min, calculate the mass flow of air in kg/s through the system. I Answer:
H.W1: Warm air is contained in a piston-cylinder assembly oriented horizontally as shown in Figure below. The air cools slowly from an initial volume of 0.003 m³ to a final volume of 0.002 m². During the process, the spring exerts a force that varies linearly from an initial value of 900 N to a final value of zero. The atmospheric pressure is 100 kPa, and the area of the piston face is 0.018 m². Friction between the piston and the cylinder wall can be neglected. For the air, determine the initial and final pressures, in kPa, and the work, in kJ. A = 0.018 m² Patm = 100 kPa Air Spring force varies linearly from 900 N when V = 0.003 m³ to zero when V, = 0.002 m³
B2. The heat energy of 1605 kJ is supplied to saltwater in the steam generator to heat from 25°C to 104°C for the generation of water vapor, Take the density & specific heat of the solution as 1028 kg/m³ & 3 J/kg°K respectively. Determine the quantity of saltwater in the steam generator. I Solution: i) Change in Temperature (in K) ii) Mass of the saltwater (in kg) iii) Quantity (Volume) of salt water (in m³)
3. Ten Ibm of an ideal gas is compressed in a piston-cylinder arrangement to 1/10 of its initial volume. The ideal gas has a molecular mass (M) of 25 and the ideal gas heat capacity is given by C, = 0.4 + 0.3 x 103 T-0.2 x 106 T² Btu/(lbm °R) where Tis in Rankine. If the initial state 1 is 5 psi and 80° F and the process is polytropic with n=1,3, what is the final (state 2) pressure in psi (8%), the final temperature in °R (8%), the work done in Btu (10%), and the internal energy change (rigorous integration of C. from Tj to T2 is required) (12%), and the heat transfer in Btu (2%) for the process? 人3 13. 1.3 3-R+V B20x (4) 20x0"- 1.3 = 399.1 Psi it
A radiator by steam is used to heat a closed room. Heat is lost from the room to the outside at a rate of heat transfer by Newton Law. The outside temperature of the room is 5 C and dimensions of room are 3 mx 4 m × 5 m. Saturated steam at 4.0 bar condenses in the radiator and emerges as a liquid at the saturation temperature. The temperature inside the room at the initial radiator is turned on is 18 C. The overall heat transfer coefficient between inside and outside room is 28 W/m² C. The heat capacity of air to be constant is 36 J/(mol C). (a) Write a differential energy balance on the room air. (b) Integrate the unsteady-state balance to calculate the time required to achieve a temperature of 22 C.
A tank of compressed air is at 40°C and 10 atm. 1 third of the gas is removed for inflating a car tire. The tank is allowed to exchange heat with the surroundings to maintain its temperature at all times. What kind of a process is this? What is the pressure remaining in the tank? a. Sketch the problem. b.Draw lines identifying the control volume, or control mass. c.Identify the states with numbers, letters, or descriptions such as “in” and “out”. d.Write down the knowns and unknowns. e.Identify what is being asked for. f.State all assumptions.
Problem 5. A 1000 cubic foot room is initially at standard temperature and pressure. A resistance heater in the room is consuming 1500W of electricity. What is the air temperature of the room after 3 hours? Assume the room acts as an isolated system. Hint: The specific heat of a substance is the amount of heat it takes to warm one unit mass of material by one degree. The specific heat of air (assuming constant volume) can be taken as C₂ = 700J/kg°C. This relates the total heat added to the system to its temperature rise.