Organic Rankine Cycle
Waste Heat to Power ORC search was updated real-time via Filemaker on:Waste Heat to Power ORC | Return to Search List
Search Completed | Title | AME 50531 Homework Solutions1 Fall 2011
Original File Name Searched: HWSolutions.pdf | Google It | Yahoo | Bing
Text | AME 50531 Homework Solutions1 Fall 2011 | 001
AME 50531 Homework Solutions1 Fall 2011
1. CPIG air enters an isentropic nozzle at 1.30 atm and 24 ◦C with a velocity of 2.5 m/s. The nozzle entrance diameter is 120 mm. The air exits the nozzle at 1.24 atm with a velocity of 90 m/s. Determine the temperature of the exiting air and the nozzle exit diameter. Given:CPIGair, 1 T1 =24◦C,P1 =1.30atm,v1 =2.5m/s,d1 =120mm 2 P2 =1.24 atm, v2 = 90 m/s
Find: T2, d2
For T2, use energy conservation:
1004.5 J kg K
For d2, use mass conservation:
v12 v22 h1+ 2 =h2+ 2
v12 v22 (h1−h2)+ 2 = 2
v12 v22 cp(T1 −T2)+ 2 = 2
cp(T1 − T2) = 1/2(v22 − v12)
(T1 − T2) = 1/2((90 m/s)2 − (2.5 m/s)2)
T→−T =4.029◦C 12
m ̇ 1 = m ̇ 2
ρ1A1v1 = ρ2A2v2
P =ρRT →ρ=P/RT P1A1v1 = P2A2v2
T1 T2 A2 = T2P1v1A1
πd2 = T2P1v1 πd21
T2 = 19.97 ◦C.
4 T1P2v2 4
d2 = (293.12 K)(1.30 atm)(2.5 m/s)(120 mm)2
(297.15 K)(1.24 atm)(90 m/s) →
2. 9.47 Consider a steam turbine power plant operating near critical pressure. As a first approximation, it may be assumed that the turbine and the pump processes are reversible and adiabatic. Neglect any changes in kinetic and potential energies.
1Solutions adapted from Borgnakke, Sonntag (2008) “Solutions Manual,” Fundamentals of Thermodynamics, 7th Edition and previous AME 50531 Homework Solutions documents.
d2 = 20.34 mm.
Image | AME 50531 Homework Solutions1 Fall 2011
|Waste Heat to Power - ORC - - Waste Heat to Power System - Go to website|
Search Engine Contact: email@example.com