Water, assumed to be a perfect liquid, has a density of 1000 kg/m³ and a specific heat of 4184 J/kgK. The water undergoes an adiabatic, frictionless process in which its pressure is raised from 100 kPa to 1000 kPa. Find the following: (a) the change of specific internal energy (J/kg) (b) the change in temperature (K) (c) the change of specific enthalpy (J/kg) (d) the temperature change (K) required in a non-adiabatic but isobaric process to change the enthalpy the same amount as the change in part c.

Water, assumed to be a perfect liquid, has a density of 1000 kg/m³ and a specific heat of 4184 J/kgK. The water undergoes an adiabatic, frictionless process in which its pressure is raised from 100 kPa to 1000 kPa. Find the following: (a) the change of specific internal energy (J/kg) (b) the change in temperature (K) (c) the change of specific enthalpy (J/kg) (d) the temperature change (K) required in a non-adiabatic but isobaric process to change the enthalpy the same amount as the change in part c.

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) A system of piston cylinder contains 5 kg of water at 150 kPa and 25 °C. Cross sectional area of the piston is 0.1 m². Water is heated and expands causing partially evaporated. When the volume reached 0.2 m³, the piston touched a spring with a spring constant of 300 kN / m. Water is heated again until the piston moves a distance of 20 cm longer. Sketch a p-v diagram of the process.
a gas expands in a piston from initial pressure of 1000 kPa and an initial volume of 0.15 cubic meter to a final pressure of 200 kPa while following the process described by p=aV + b, where a =- 1600 kPa/cubic meter and b is a constant. calculate the work performed.
Consider air in a piston than undergoes a polytropic process where PV^n= constant and n is a positive value. How do the pressure and volume change during expansion?
A 110-volt 6 Ampere electric heatrer is submerged in 1 kg of water for 24 minutes. What will be the final temperature of the water if its initial temperature is 23 C. Assume a heat loss of 13%.
5 lbm of air expands inside a piston cylinder configuration at a constant pressure of 24 psia.During the expansion process the temperature increases by 100F°. How much work was doneby the gas, in BTU. If the initial temperature is 76°F, what is the final volume after expansion, inft3Ans(34.3)
3 kg of wet vapor, having a quality of 33% expands at a constant pressure of 5.6 MPa inside a piston-cylinder. After the process the temperature of the steam is now 450°C. Determine the following: a. Work (kJ) b. Heat transfer (kJ) c. Change in Entropy (kJ/K)
A piston-cylinder device contains 0.15kg of air initially at 2 MPa and 350oC. The air is first expanded isothermally to 500 kPa, then compressed polytropically with a polytropic exponent of 1.2 to the initial pressure, and finally compressed at the constant pressure to the initial state. a. Indicate knowns and unknows for each state as well as what type ofprocess is performed to get from one state to another. State anyassumptions b. Determine the boundary work for each processc. Determine the net work of the cycled. Draw the P-v diagram for each process
A closed, rigid tank fitted with a fine-wire electric resistor is filled with Refrigerant22, initially at -10 °C, a quality of 80 %, and a volume of 0.01 m 3 . A 12-volt batteryprovides a 5-ampcurrent to the resistorfor 5 minutes. If thefinal temperature of therefrigerant is 40 °C,determine the heattransfer, in kJ, from therefrigerant.
A piston-cylinder arrangement contains water at 110°C, 87% quality with a volume of 1 L. What is the initial mass, in grams? The system is then heated, causing the 150-mm- diameter piston to rise and encounter a linear spring with k = 800 kN/m. Calculate the specific internal energy (kJ/kg) at this instant knowing that the measured volume is 1.7 L. The heating continues and compresses the spring in the process. When the piston encounters the stops, the pressure is 200 kPa. What is the temperature (in °C) and entropy (in kJ/kg-K) at this point? Heating then continues until the pressure reaches 300 kPa. What is the volume, in L, at this instant? Illustrate the complete process in separate P-v and T-v diagrams. Hint: Draw the FBD of the piston in each state. wwwwwww D=0.15m H₂O
Q2: Air in A frictionless piston-cylinder device is compressed slowly according to the relation PV16- constant until it reaches a final temperature of 410 K. if you Know the piston-cylinder device initial condition contains 6 kg of air at 130 kPa and 300 K. Calculate the work input during this process.
(a) An ideal gas is taken through a quasi-static process described by P = aV², with a = 2.00 atm/m°, as shown in the figure. The gas is expanded to twice its original volume of 1.00 m³. How much work (in MJ) is done on the expanding gas in this process? P= aV² V 2.00 m³ 1.00 m3 MJ (b) What If? How does the work done in part (a) compare to the lowest and highest possible amounts of work that can be done on this gas between the initial and final states if the pressure always remains between P, and P, and the volume always remains between V, and V? (Enter your answers as percentages of the work done in part (a).) lowest x 100% = % W part (a) highest x 100% = % part (a) Need Help? Read It Master It
Three kilograms of steam initially at 2 MPa & 350 celsius at constant temperature until quality of 90 %. determine the a(Q) heat removed (b) change u(specific internal energy) (c) Wn