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## Engineering Thermodynamics

by: Corene Hagenes

100

0

2

# Engineering Thermodynamics MECH&AE 133A

Corene Hagenes
UCLA
GPA 3.84

R. Amar

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COURSE
PROF.
R. Amar
TYPE
Class Notes
PAGES
2
WORDS
KARMA
25 ?

## Popular in Mechanical and Aerospace Engineering

This 2 page Class Notes was uploaded by Corene Hagenes on Friday September 4, 2015. The Class Notes belongs to MECH&AE 133A at University of California - Los Angeles taught by R. Amar in Fall. Since its upload, it has received 100 views. For similar materials see /class/177846/mech-ae-133a-university-of-california-los-angeles in Mechanical and Aerospace Engineering at University of California - Los Angeles.

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Date Created: 09/04/15
MAE 1 33A Spring 2013 Homework 1 Due TBA Complete all problems 276 A gas within a piston cylinder assembly undergoes a thermodynamic cycle consisting of three processes Process 1 2 Constant volume V 0028 mquot U Ul 264 k Process 2 3 Expansion with pV CUIZSNIIII U U1 Process 3 l Constant pressure p 14 bar W 7105 kl There are no significant changes in kinetic 0139 potential energy a Sketch the cycle on a pil diagram b Calculate the net work for the cycle in k c Calculate the heat transfer for process 2 3 in kl d Calculate the heat transfer for process 3 l in U Is this a power cycle or a refrigeration cycle 346 For each case determine the specified property data and locate the state by hand on a sketch of the T v diagram a Evaluate the specific volume in ftalb and the speci c enthalpy in Btulb of water at 400 F and a pressure of 3000 lbfin 2 b Evaluate the speci c volume in ft31b and the speci c enthalpy in Btulb 0f Refrigerant 13421 at 95 F and 150 lbfin2 c Evaluate the specific volume in m3kg and the specific enthalpy in kJkg of ammonia at 20 C and 10 MPa d Evaluate the specific volume in m3kg and the specific enthalpy in kJkg of propane at 800 kPa and 0 C 370 Referring to Fig P370 water contained in a piston cyljrider assembly initially at 15 bar and a quality of 20 is heated at constant pressure until the piston hits the stops Heating then continues until the water is saturated vapor Show the processes of the water in series on a sketch of the 71v diagram For the overall process of the water evaluate the work and heat transfer each in kJkg Kinetic and potential effects are negligible 005 m Fig P370 431 Steam enters a nozzle operating at steady state at 20 bar 280 C with a velocity of 80 ms The exit pressure and temperature are 7 bar and 180 C respectively The mass ow rate is 15 kgs Neglecting heat transfer and potential energy determine a the exit velocity in ms b the inlet and exit ow areas in cm3 443 Air expands through a turbine from 8 bar 960 K to 1 bar 450 K The inlet velocity is small compared to the exit velocity of 90 ms The turbine operates at steady state and

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