Start convers(1)Water that has an initial volume of 380 L at 120°C with a quality of 42 percentis contained in a spring-loaded piston-cylinder device. This water is thenheated until the pressure rises to 600 kPa and the temperature reaches 900°C.The total amount of heat transfer during this process is:(a) 2642 kJ(b) 2689 kJ(c) 2732 kJ(d) 2769 kJ(e) 2807 kJ(2) A well-insulated 114 m room initially at 4°C and 90 kPa is heated by theradiator of a steam heating system. The radiator has a volume of 40 L and isfilled with cunerheated vapor at 400 kPa and 300°C. At this moment both the

Answered: Image /qna-images/answer/e63d2241-a24d-4bb0-a37a-ef4bfdac2929.jpg

(1)Water that has an initial volume of 380 L at 120°C with a quality of 42 percent is contained in a spring-loaded piston-cylinder device. This water is then heated until the pressure rises to 600 kPa and the temperature reaches 900°C. The total amount of heat transfer during this process is: wwww

(1)Water that has an initial volume of 380 L at 120°C with a quality of 42 percent is contained in a spring-loaded piston-cylinder device. This water is then heated until the pressure rises to 600 kPa and the temperature reaches 900°C. The total amount of heat transfer during this process is: wwww

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 piston-cylinder device contains 0.91 kg of refrigerant-134a at –10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15°C. Use data from the tables. R-134a -10°C Problem 03.030.b - Change of volume of cylinder with refrigerant Determine the change in the volume of the cylinder of the refrigerant-134a if the specific volume and enthalpy of R-134a at the initial state of 90.4 kPa and -10°C and at the final state of 90.4 kPa and 15°C are as follows: 1= 0.2418 m3/kg, m = 247.77 kJ/kg v2 = 0.2670 m3/kg, and h2 = 268.18 kJ/kg The change in the volume of the cylinder is ]m³.
1 kg of steam at initial conditions of 5.1 MPa and 370 °C expands in a turbine until it becomes saturated. It is withdrawn and reheated to 340°C. After further expansion in the turbine to 160 , part of the steam is extracted for feedwater heating. The remaining steam expands to the condenser pressure of 0.018 MPa. For the steam table: https://drive.google.com/drive/folders/1WTb6WwrXs2FR8Y92B3exTPKm6tZtDL8t
3- A frictionless piston cylinder device initially contains 200 L of saturated vapor refrigerant R-12 at 800 kPa. The refrigerant R-12 is now heated until its temperature becomes 50 C. Find: (1) the mass of R-12, (2) Au, Ah & Av, (3) the work done during this process, (4) the amount of heat added to the system, and (5) show the process on T-v diagram
2. A 1.4-m rigid tank initially contains refrigerant-134a at 20°C. At this state, 80 percent of the mass is in the vapor phase. The tank is connected by a valve to a supply line where refrigerant at 1.2 MPa and 100°C flows steadily. Now the valve is opened slightly, and the refrigerant is allowed to enter the tank. When the pressure in the tank reaches 800 kPa. the entire refrigerant in the tank exists in the vapor phase only. At this point the valve is closed. Determine (a) the final temperature in the tank, (b) the mass of refrigerant that has entered the tank, and (c) the heat transfer between the system and the surroundings.
3.2 Carbon dioxide (Cp = 871 J/kg.K and Cv = 678 J/kg.K) is compressed from 0.4 m3 at 100 kPa and 14 oC to 0.08 m3 and 690 kPa according to the law PVn = Constant. Determine:(a) The value of the index n(b) The work done during compression(c) The change in internal energy(d) The heat transferred through the cylinder wall, stating whether this is a gain or loss
Inside a piston cylinder. 10g of air is adiabatically compressed. Initially the air is at 27 degree celsius and 110kpa. After compression, the air is 450 degree Celsius. What is the final pressure, heat transferred, internal energy increase and work required?
A piston-cylinder device contains 0.85 kg of refrigerant- 134a at 210°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant- 134a until the temperature is 15°C. Determine the final pressure in psi. Select one: a. 13.12 O b. 82.5 O c. 17.4 O d. 90.4
HELP ME WITH THIS THERMODYNAMIC PROBLEM Subcooled water at the pressure of 10 MPa and temperature of 100°C is heated at a constant pressure process to the temperature 200°C. If the mass of water is 5 kg (a closed system), determine the work and heat transfer in the process: Using compressed liquid water property table. Using saturated water property table (approximation). Using incompressible substance equations (note that in an incompressible fluid, the volume does not change).
A steel casting weighing 2 kg has an initial temperature of 500oC; 40 kg of water initiallyat 25oC is contained in a perfectly insulated steel tank weighing 5 kg. The casting isimmersed in the water and the system is allowed to come to equilibrium. What is its finaltemperature? Ignore effects of expansion or contraction, and assume constant specific heatsof 4.18 kJ/kg.oC for water and 0.5 kJ/kg.oC for steel.
A frictionless piston cylinder device initially contains 200L of saturated liquidrefrigerated R134a. The piston is free to move, and its mass is such that it maintainsa pressure of 900 kPa on the refrigerant. The refrigerant is now heated until itstemperature rises to 70 oC. Calculate the work done in the process.
Thermodynamics Refrigerant R-134a to the compressor of a refrigeration machine It enters at 140 kPa pressure and -10 °C, and exits at 1 MPa pressure. Volumetric flow of the refrigerant entering the compressor It is 0.23 m³/minute. The refrigerant enters the throttling valve at a pressure of 0.95 MPa and at 30 °C, and exits the evaporator as saturated steam at -18 °C. Adiabatic efficiency of the compressor It is 78%. Show the cycle in the T-s diagram. And; a) Calculate the power required to run the compressor. b) Calculate the heat absorbed per unit time from the cooled medium. ( COPSM=? ) c) Calculate, between the evaporator and the compressor, how much the pressure of the refrigerant drops and how much the heat gain.
A closed cylinder is divided into two parts by a friction-free piston restricted from motion by a Barrette. Part A contains 10L of air at 100 kPa and 30°C, part B contains 30OL of water as saturated vapor at 30°C The pin is released and both parts come to equilibrium at 30°C. Consider air and water together as a system. Represent the statement graphiçally and determine the total heat transfer in the process. Answer: -15,706KJ