As shown in Figure A2-a, a piston-cylinder assembly with two set of stops contains a mass of 3 kg of saturated liquid-vapor mixture at a pressure of 1.65 bar. At state 1, 1 kg of the water is in a liquid phase and the remaining water is in a vapor phase. The piston sitting on the stops starts to move when the pressure inside the cylinder reaches 5 bar due to heat transfer. The heat transfer stops when the total volume increases by 20%. H₂O m=3 kg Figure A2-a (i) Determine the initial and final temperatures. Determine the mass of liquid when the piston begins to move. Determine work done during this process and show the process on a P-v diagram. (iii)

As shown in Figure A2-a, a piston-cylinder assembly with two set of stops contains a mass of 3 kg of saturated liquid-vapor mixture at a pressure of 1.65 bar. At state 1, 1 kg of the water is in a liquid phase and the remaining water is in a vapor phase. The piston sitting on the stops starts to move when the pressure inside the cylinder reaches 5 bar due to heat transfer. The heat transfer stops when the total volume increases by 20%. H₂O m=3 kg Figure A2-a (i) Determine the initial and final temperatures. Determine the mass of liquid when the piston begins to move. Determine work done during this process and show the process on a P-v diagram. (iii)

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

A vertical cylinder is fitted with a freely-moveable piston of 0.2 m diameter and contains 0.1 kg of (liquid) water. At the initial State 1, the water remains in equilibrium as saturated liquid at 15 "C with the piston applying a pressure of 7.0 bar on the water in the cylinder. The water is then slowly heated until the piston rises to a height of 0.6 m above its initial position to reach the equiliorium at State 2. The piston is now held fixed at this location and the cylinder contents are further heated to increase its pressure to 15 bar at State 3. (a) Find the volume of water at State 1. (b) Show that the cylinder contains saturated (wet) steam at State 2 and determine its dryness fraction at this state. (c) Find the steam temperature at State 3. On a T-v diagram, indicate the process undergone by the contents of the cylinder from State 1 to State 3.
Solve the following problem using the right Thermodynamics properties table.
A rigid, well-insulated tank contains a two-phase mixture of ammonia with 0.0022 ft³ of saturated liquid and 1.5 ft3 of saturated vapor, initially at p₁ = 70 lb/in². A paddle wheel stirs the mixture until only saturated vapor at higher pressure, p2, remains in the tank. Kinetic and potential energy effects are negligible. Determine the pressure p2, in lb/in², and the amount of energy transfer by work, in Btu. Step 1 * Your answer is incorrect. Determine p2, in lb/in². P2= i81.56 lb/in²
2. Given a closed container of volume 1 L containing 50 g of helium gas, calculate the following: a. The pressure at T = 6 K, assuming that the gas is an ideal gas. b. The pressure at T of state. = 6 K, assuming that the gas obeys van der Waal's equation c. The pressure at T 6 K, assuming that the gas obeys the virial equation of state truncated after the second term. = d. The state of the fluid at T = 4.2 K. (Hint: 4.2 K is below T. and 50 kg/m³ is greater than p, @ 4.2 K.)
Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50 lb/in², and a volume of 1.6 ft³. The gas is stirred until its temperature is 500°F. During this process heat transfer from the gas to its surroundings occurs in an amount 2.6 Btu. Assume ideal gas behavior, but do not assume constant specific heats. Kinetic and potential energy effects can be ignored. Determine the mass of the carbon dioxide, in lb, and the work, in Btu.
HW1- Complete the following table for H₂O. Write the details of the solution and show each state on a Tv diagram State T, °C 2 3 5 140 125 500 P, kPa 550 750 500 v, m³/kg 0.05 0.140 h, kJ/kg phase description 2890 Saturated liquid
Use image below Part A - Evaluate the volume and internal energy of the air in the initial state 1, in the intermediate state 2, and in the final dead state DS. Also evaluate the temperature of the air in the intermediate state 2. PArt B - Plot the processes 1 → 2 → DS on P–v, T–v, P–s, and T–s diagrams. Mark states 1, 2, and DS on the graphs, and make sure that it is clear when a given quantity increases, decreases, or remains constant.
* Your answer is incorrect. Water contained in a piston-cylinder assembly, initially at 300°F, a quality of 80%, and a volume of 6 ft3, is heated at constant temperature to saturated vapor. If the rate of heat transfer is 0.3 Btu/s, determine the time, in min, for this process of the water to occur. Kinetic and potential energy effects are negligible. At = i 5.217 min
1. During a polytropic process, 10 lb of an ideal gas, whose R=40 ft.lb/lb.R and c = 0.25 Btu/lb.R, changes state from 20 psia and 40°F to 120 psia and 340°F. Determine (a) n, (b) AU and AH, (c) AS, (d) Q, (e) SpdV, (f) - SVdp. (g) If the process is steady flow during which AK = 0, what is W?. What is AK if W, = 0? (h) What is the work for a nonflow process?
A sealed vessel with a volume of 200 m³ is heated by a heat source. At the beginning of the process the vessel holds saturated water mixture at a pressure of 120 bar with a liquid fraction of 20%. The vessel is heated until a pressure of 130 bar. For this process: a. Draw the process on a T-V diagram b. Find the total mass of mixture in the vessel C. Find the quality of steam at the end of the process (when P=130 bar) inside the vessel