HW9_ME235

Answer on a piece of paper WITH COMPLETE AND CLEAR UNITS/CONVERSION FACTORS.

Ex Clearly please , use table to solve

Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!

Step by step solution please I only have 1 attempt thank you.

HARM 1-therm\Th6-2.PM5 40 ENGINEERING THERMODYNAMICS 19. 1 kg of air is compressed polytropically from 1 bar and 300 K to 7 bar and 380 K. Determine the irreversibil- ity and effectiveness, assuming temperature and pressure as 300 Kand 1 bar. Take for air : c, = 1.005 kJ/kg K, c̟ = 0.718 kJ/kg K, R = 0.287 kJ/kg K. [Ans. 1.25 kJ ; 0.924] 20. The moment of inertia of a flywheel is 0.54 kg-m2 and it rotates at a speed of 3000 r.p.m. in a large heat insulated system, the temperature of which is 15°C. If the kinetic energy of the flywheel is dissipated as frictional heat at the shaft bearings which have a water equivalent of 2 kg, find the rise in the temperature of the bearings when the flywheel has come to rest. Calculate the greatest possible amount of the above heat which may be returned to the flywheel as high- grade energy, showing how much of the original kinetic energy is now unavailable. What would be the final r.p.m. of the flywheel, if it is set in motion with this available…

SN is equal to 18

raph Styles Editing Voice 4. Steam undergoes an adiabatic expansion in a piston-cylinder assembly from 100 bar, 360 C to 1 bar, 160 C. What is work in kJ per kg of steam for the process? Calculate the amount of entropy produced, in kJ/K per kg of steam. What is the maximum theoretical work that could be obtained from the given initial state to the same final pressure? Show both processes on a properly labeled sketch of the T-s diagram.

10. Methane enters a compressor at 14 psia with a very low velocity and is compressed to 55 psia. The entering methane has a density of 0.04 lb /ft. The methane leaves the compressor with a velocity of 250 fps. The flow rate is 0.38 lb/s. Assuming a quasi-equilibrium process in which pu133=constant, calculate the work done on the methane in hp. m m [ans: -57.4 hp] to Thermodynamics

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

Show the complete solution for this problem

An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow constant pressure process from initial volume =1.2 cubic meter and initial pressure = 690 kPa to a state where final temperature = 600°C. What is the initial temperature ? Determine the constant volume specific heat.   need a complete solution, symbol, and cancellation:)

DRAW THE PV, TS DIAGRAMS AND SOLVE THE FOLLOWING 1. An ideal gas whose mass is 1.36 kg m, R = 204.51 J/kg m and k = 1.6667. Heat added during a reversible nonflow constant pressure change of state is 316.5 kJ. The initial temperature is 37.78 o C. Determine a) change in entropy (kJ/K), b) Work (kJ), c) ratio of expansion or V 2 /V 1. 2. An adiabatic expansion of air occurs through a nozzle (W s = 0) from 850 kPa and 75 o C to 140 kPaa. For an isentropic expansion find: specific volume (m 3 /kg m ), temperature ( o C), and velocity (m/s) at the exit section assuming initial kinetic energy is negligible. (PLS SHOW COMPLETE SOLUTION AND WRITE PROPERLY) (PLEASE ANSWER BOTH QUESTIONS PLEASE)

Hi! Please I need a solution in 15 minutes

a random sample of 83 reconstructed clay vessels from the turquoise ridge Thermo Dynamics How much entropy, in kJ/K, is transferred to 20 kg of helium at 20 degrees C if the temperature is increased by 28 degrees C. Note: the pressure is maintained constant. Please solve within 30 minutes.

Provide complete and clear solution for this problem.  A 5 kg air in a tank changes its temperature from 50oC to 250oC. What is the change in entropy KJ/K.  A. 1.23           B. 8.34          C. 4.23          D. 1.72 Answer: D

p = 0.300 MPa, u = 2543.6 KJ/kg

Krypton in a closed system is compressed adiabatically from 94 K and 1 bar to a final pressure of 24 bar. Compute the required work. Assume krypton is an ideal gas. From Appendix B in the text, we can assume the heat capacity of krypton is independent of temperature and CP=2.5R , where R is the molar gas constant R=8.314 J/(mol K). For an ideal gas, recall CV=CP−R=1.5R. Report your answer in units of kJ/mol using three decimal places.

Thermodynamics 1

Analyze the importance of thermodynamics knowledge to design a reaction or process system, from the viewpoint of Sustainable Development Goals, SDG 12: Responsible Consumption and Production.

estion Completion Status: QUESTION 26 Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated cylinder from 3.7 bar, 220 °C to a volume of 0 085 m If the initial volume OCcupied was 0 02 m calculate the gas constant to 3 decimal places. Assume nitrogen to be a perfect gas and take cv = 0 63 k J/kg K QUESTION 27 High-P Low-P Lurh

THERMODYNAMICS UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS. NO LONG EXPLANATION NEEDED. BOX THE FINAL ANSWER AND USE 3 DECIMAL PLACES. DRAW PV and TS Diagrams. SEE THE ATTACHED PHOTO FOR THE CONSTANTS. The gain in entropy during an isothermal non-flow process of 5 lb of air at 60°F is 0.462 Btu/R. What is (a) the ratio V2/ V1 (b) the ratio P2/P1 . (c) work in KJ and (d) heat in KJ?

I need answer within 20 minutes please please with my best wishes

You, a process design engineer, are tasked to build a powerplant with a net output of 1 MW. First, in an industrial boiler, coal is burned to heat and pressurize 1.6 kg/s of water pumped from an underground reservoir (25 oC, 1 atm) to High Pressure Steam (44 atm, 450 oC). The industrial boiler is insulated, but due to the high temperatures and the nature of the process there are inevitably heat losses. As such, the total heat losses of the whole system is around 20% of the heat from the coal. The High-Pressure Steam, moving at a linear velocity of 70 m/s, is then used to drive a turbine. The low pressure steam from the turbine is used to preheat the boiling water and then released to the atmosphere as saturated steam (100oC and1atm) at a velocity of 10 m/s via an exhaust 10 m above the turbine inlet. How much heat is needed for the powerplant? Use the following values of enthalpy: Water from reservoir 25oC; 1atm H=104.93 kJ/kg High Pressure Steam 450oC; 44atm H=3324.63 kJ/kg Low…

p46,#15 with illustration and explanation

A quantity of gas (mean molecular weight 36.2) is compressed according to the law pvn = constant, theinitial pressure and volume being 1.03 bar and 0.98 m3 respectively. The temperature at the start of compression is 17°C and at the end it is 115°C. The amount of heat rejected during compression is 3.78 kJ,cp= 0.92. Calculate :(i) Value of n, (ii) Final pressure, (iii) Change in entropy.

Thermodynamics: Please show me how to solve the given practice problems in step by step solution.

please asnwe it in 2hrs. please show solutions step by step.

b) For an Otto Engine the temperature at the end of combustion is 280 K. If the temperature in the gas side and coolant side of the wall are 177 °C and 127 °C and cylinder wall thickness is 5 mm;

Identify whether the given property is a state or path function:    Work  Heat  Volume  Pressure  Temperature