(a) To determine The fan power. Explanation Write energy rate balance Equation for 1-2. − W = − ( m 2 − m 1 ) h i n + m 2 u 2 − m 1 u 1 (I) Here, work is W , final mass is m 2 , initial mass is m 1 , final specific internal energy is u 2 and te initial internal energy is u 1 . Substitute 0 for m 1 in equation (I). − W = − ( m 2 − 0 ) h i n + m 2 u 2 − ( 0 ) u 1 − W = − m 2 h i n + m 2 u 2 (II) Write the expression for work during expansion. W exp = p ( V 2 − V 1 ) (III) Here, work during expansion is W exp , final volume is V 2 and the initial volume is V 1 . Write the expression for gas constant. R = R ¯ M (IV) Here, gas constant is R , universal gas constant is R ¯ and the molecular mass is M . Write the expression for final mass. m 2 = p 2 V 2 R T 2 (V) Here, final state pressure is p 2 and the final temperature is T 2 . Write the expression for fan power. W ˙ f a n = W − W exp t (VI) Here, fan power is W ˙ f a n and the time is t . Conclusion: Substitute 14.7 lb / in 2 for p , 49000 ft 3 for V 2 and 0 for V 1 in Equation (III). W exp = ( 14.7 lb / in 2 ) ( 49000 ft 3 − 0 ) = ( 14.7 lb / in 2 ) ( 1 ft 12 in ) 2 ( 49000 ft 3 ) = ( 14.7 lb / in 2 ) ( 1 ft 12 in ) 2 ( 49000 ft 3 ) ( 1 Btu 778 lb ⋅ ft ) = 133592.39 Btu Substitute 1545 ft ⋅ lb / lbmol ⋅ °R for R ¯ and 28.97 lb / lbmol for M in Equation (IV) (b) To determine The time required.

8th Edition

ISBN: 9781119391630

Author: MORAN

Publisher: WILEY

See similar textbooks

Videos

Question

Chapter 4.12, Problem 130P

(a)

To determine

The fan power.

(b)

To determine

The time required.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 4.12, Problem 128P

Chapter 5.11, Problem 1E

Students have asked these similar questions

-6- 8 من 8 Mechanical vibration HW-prob-1 lecture 8 By: Lecturer Mohammed O. attea The 8-lb body is released from rest a distance xo to the right of the equilibrium position. Determine the displacement x as a function of time t, where t = 0 is the time of release. c=2.5 lb-sec/ft wwwww k-3 lb/in. 8 lb Prob. -2 Find the value of (c) if the system is critically damping. Prob-3 Find Meq and Ceq at point B, Drive eq. of motion for the system below. Ш H -7~ + 目 T T & T тт +

Q For the following plan of building foundation, Determine immediate settlement at points (A) and (B) knowing that: E,-25MPa, u=0.3, Depth of foundation (D) =1m, Depth of layer below base level of foundation (H)=10m. 3m 2m 100kPa A 2m 150kPa 5m 200kPa B

W PE 2 43 R² 80 + 10 + kr³ Ø8=0 +0 R²+J+ kr200 R² + J-) + k r² = 0 kr20 kr20 8+ W₁ = = 0 R²+1) R²+J+) 4 lec 8.pdf Mechanical vibration lecture 6 By: Lecturer Mohammed C. Attea HW1 (Energy method) Find equation of motion and natural frequency for the system shown in fig. by energy method. m. Jo 000 HW2// For the system Fig below find 1-F.B.D 2Eq.of motion 8 wn 4-0 (1) -5- m

Chapter 4 Solutions

FUND OF ENGINEERING THERMO W/WILEY PLU

Ch. 4.12 - Prob. 1E Ch. 4.12 - 2. When a drip coffeemaker on-off switch is turned...Ch. 4.12 - Prob. 3E Ch. 4.12 - Prob. 4E Ch. 4.12 - Prob. 5E Ch. 4.12 - Prob. 6E Ch. 4.12 - Prob. 7E Ch. 4.12 - Prob. 8E Ch. 4.12 - Prob. 9E Ch. 4.12 - 10. How does the operator of a pumper-tanker fire...

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.