Problem 5- Change in entropy for a pure substance A frictionless piston-cylinder assembly contains 0.005 m³ water at 150 kPa and 225°C. Next, the water is cooled at constant pressure until its quality becomes equal to 0.70. Please answer the following. a. Represent the process for the water on a T-s diagram. In your T-s diagram include values for P, T and s. b. Determine the entropy change of the water during this process, in kJ/k using three significant figures. C. Determine the amount of heat removed from the water, in kJ.

Problem 5- Change in entropy for a pure substance A frictionless piston-cylinder assembly contains 0.005 m³ water at 150 kPa and 225°C. Next, the water is cooled at constant pressure until its quality becomes equal to 0.70. Please answer the following. a. Represent the process for the water on a T-s diagram. In your T-s diagram include values for P, T and s. b. Determine the entropy change of the water during this process, in kJ/k using three significant figures. C. Determine the amount of heat removed from the water, in kJ.

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

Ammonia with MW=17, weighing 22kg is confirmed inside a cylinder equipped with a piston has initial pressure of 413kPa and 48C. if 2900kJ of heat is added until the final pressure is 413kPa and final temperature is 100C. Determine the change in entropy kJ/K
A rigid tank contains 5 kg of saturated vapor steam at 100°C. The steam is cooled to the ambient temperature of 25°C.(a) Sketch the process with respect to the saturation lines on a T-v diagram.(b) Determine the entropy change of the steam, in kJ/K.(c) For the steam and its surroundings, determine the total entropy change associated with this process, in kJ/K.
A well insulated piston cylinder device contains 2 kg of steam at 800 kPa and 40% quality. The steam now is allowed to expand in a constant pressure process until its temperature reaches 250 Celsius. Determine a) The Entropy change of the steam during this process, in kJ/K. b) Whether this process is reversible, irreversible, or impossible. Explain. c) Show the process in a T-s diagram with respect to saturation lines.
Determine change in specific entropy of the ideal gas from state 1 to state 2 in kJ/kg K
1.3 1 kg of air has a volume of 85 litres and a temperature of 150ºC. The air is heated at constant volume until the temperature is 250ºC. It is then expanded according to the law Pv1.3 = C until the pressure has halved. R for air is 0.287 kJ/kg.K and Cp = 1.005 kJ/kg.K.(a) Calculate the change in entropy during the constant volume heating process(b) Calculate the pressure at the beginning and end of constant volume process, the temperature and pressure at the end of expansion and the volume at the end of expansion.(c) Calculate the change in entropy during the expansion
In a house, room temperatures are desired to be kept constant at 21 ° C. For this purpose, the temperature of the water entering the radiator with a flow rate of 5 kg / min is initially 90 ° C (saturated liquid), but drops to 70 ° C at the radiator outlet. According to this;a) entropy change of waterb) The entropy change of the roomc) Calculate the total entropy change.
please help with following problems: (a) Determine the heat exchanged between the piston/cylinder and the heatreservoir in kJ. Is heat added to the system or rejected to the heatreservoir? (b) Determine the change of entropy of the system in kJ/K. Is the resultreasonable? (c) Determine the entropy generation in kJ/K (change of entropy of thesystem+entropy change of the heat reservoir).
Determine the entropy for these states. R-134a, T = 25°C, v = 0.01 m3/kg
An ideal gas has a molecular mass of 25.1 kg/kgmol is heated at a constant volume from 120°C to 300°C. If the change in specific internal energy is 250 kJ/kg, determine the entropy change
A 20 kg/s steam enters a turbine at an initial enthalpy of 2456kJ/kg and exits at 1987 kJ/kg. If the kinetic energy of the steam decreases by 10 kJ/s, how much is the turbine work? Draw a schematic diagram,andthen plot the state/s and process, whichever is applicable in a t-sdiagram
An iron block of unknown mass at 185°F is dropped into an insulated tank that contains 0.8 ft3 of water at 70°F. At the same time, a paddle wheel driven by a 200-W motor is activated to stir the water. Thermal equilibrium is established after 10 min with a final temperature of 75°F. Determine the entropy generated during this process.
8 kg of water vapor are 2.8 MPa and with 100 degrees celcius SH reject of 2180 Kj/kg of steam at constant Pressure. Determine Enthalpy in (Kj), Internal Energy in (Kj), Entropy in (Kj/K).