The time required for the onset of evaporation in seconds.

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Answer 1

Question

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

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USE MATLAB ONLY provide typed code Turbomachienery . GIven: vx = 185 m/s, flow angle = 60 degrees, R = 0.5, U = 150 m/s, b2 = -a3, a2 = -b3 Find: velocity triangle , a. magnitude of abs vel leaving rotor (m/s) b. flow absolute angles (a1, a2, a3) 3. flow rel angles (b2, b3) d. specific work done e. use code to draw vel. diagram Use this code for plot % plots Velocity Tri. in Ch4 function plotveltri(al1,al2,al3,b2,b3) S1L = [0 1]; V1x = [0 0]; V1s = [0 1*tand(al3)]; S2L = [2 3]; V2x = [0 0]; V2s = [0 1*tand(al2)]; W2s = [0 1*tand(b2)]; U2x = [3 3]; U2y = [1*tand(b2) 1*tand(al2)]; S3L = [4 5]; V3x = [0 0]; V3r = [0 1*tand(al3)]; W3r = [0 1*tand(b3)]; U3x = [5 5]; U3y = [1*tand(b3) 1*tand(al3)]; plot(S1L,V1x,'k',S1L,V1s,'r',... S2L,V2x,'k',S2L,V2s,'r',S2L,W2s,'b',U2x,U2y,'g',... S3L,V3x,'k',S3L,V3r,'r',S3L,W3r,'b',U3x,U3y,'g',...... 'LineWidth',2,'MarkerSize',10),... axis([-1 6 -4 4]), ... title('Velocity Triangle'), ... xlabel('x'),yl

Consider a 12 cm internal diameter, 14 m long circular duct whose interior surface is wet. The duct is to be dried by forcing dry air at 1 atm and 15oC throught it at an average velocity of 3m/s. The duct passes through a chilled roo, and it remains at an average temp of 15oC at all time. Determine the mass transfer coeeficient in the duct.

Consider a 5m by 5m wet concret patio with an average water film thickness of .2mm. Now wind at 50 km/h is blowing over the surface. If the air is at 1 atm, 15oC and 35 percent relative humidity, determine how long it will take for the patio to completely dry.

Answer 2

Question

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Answer 6

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

Answer 7

Chapter 4, Problem 4.87P

i.

To determine

The time required for the onset of evaporation in seconds.

Answer 8

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Answer 9

ii.

To determine

The time required for all the water to evaporate in seconds, once evaporation starts.

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

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Answer 13

Ch. 4 - Prob. 4.1E Ch. 4 - Prob. 4.2E Ch. 4 - Prob. 4.3E Ch. 4 - Prob. 4.4E Ch. 4 - Prob. 4.5E Ch. 4 - Prob. 4.6E Ch. 4 - Prob. 4.7E Ch. 4 - Prob. 4.8E Ch. 4 - Prob. 4.9E Ch. 4 - Prob. 4.10E

The time required for the onset of evaporation in seconds.

Solution Summary: The author calculates the time of evaporation by using the formula t=mcDelta TQ.

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The time required for the onset of evaporation in seconds.

The time required for all the water to evaporate in seconds, once evaporation starts.

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