Explanation Given: The pressure of the saturated steam is P = 1 atm . The diameter of the tube is D = 100 mm . The length of the tube is L = 1 m . The temperature of the surface is T S = 94 ° C . Formula used: The expression for the heat transfer rate is given as, q = h ¯ L ( π D L ) ( T s a t − T S ) Here, q is the heat transfer, D is the diameter of the tube, and L is the length of the tube, T s a t is the saturated temperature of the tube, h ¯ L is the convective heat transfer coefficient and T S is the surface temperature. The expression for the mass flow rate is given as, m ˙ = q h ′ f g Here, h f g ' is latent heat of vaporization. The expression for the Reynolds number for the wavy laminar film condensation is given as, Re δ = [ 3.70 k L ( T s a t − T S ) μ h ′ f g ( v 2 g ) 1 3 + 4.8 ] 0.82 Here, k is the conductive heat transfer coefficient, μ is viscosity, and v is the kinematic viscosity. The expression for the convective heat transfer coefficient is given as, h ¯ L = Re δ μ h ′ f g 4 L ( T s a t − T S ) Calculation: The following assumptions is to be made while solving the problem. 1. The condensation of the type of film condensation. 2. The non-condensable are negligible. 3. The plate is vertical. Refer to the table A.6 “Properties of water”. Obtain the values at corresponding temperature of 1.01 bar . T s a t = 100 °C ρ v = 0.596 kg / m 3 h f g = 2257 kJ / kg ρ l = 960.6 kg / m 3 Further, μ l = 289 × 10 − 6 N ⋅ s / m 2 c p = 4214 J / kg ⋅ K k = 0.679 W / m ⋅ K v l = 3.01 × 10 − 7 m 2 / s The value of h f g ' can be calculated as, h ′ f g = h f g ( 1 + 0.68 c p ( T s a t − T S ) ) h ′ f g = 2257 kJ / kg ( 1 + 0.68 ( 4214 J / kg ⋅ K ) ( ( 100 ° C + 273 ) K − ( 94 ° C + 273 ) K ) ) h ′ f g = 2274 kJ / kg The Reynolds’s number can be calculated as. Re δ = [ 3.70 k L ( T s a t − T S ) μ h ′ f g ( v 2 g ) 1 3 + 4

7th Edition

ISBN: 9780470917855

Author: Bergman, Theodore L./

Publisher: John Wiley & Sons Inc

See similar textbooks

Videos

Question

Chapter 10, Problem 10.46P

To determine

The total condensation rate to the pipe.

The heat transfer rate to the pipe.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 10, Problem 10.45P

Chapter 10, Problem 10.47P

Students have asked these similar questions

1.7 Find the stress distribution in the beam shown in Fig. 1.23 using two beam elements. A. E. I constant M₂ T + FIGURE 1.23 A fixed-pinned beam subjected to a moment

42 PART 1 Introduction A. E. I constant FIGURE 1.22 A fixed-pinned beam. 1.6 Find the stress distribution in the beam shown in Fig. 1.22 using two beam elements.

1.4 Using a one-beam element idealization, find the stress distribution under a load of P for the uniform cantilever beam shown in Fig. 1.20. A, E, I constant L FIGURE 1.20 A uniform cantilever beam

Chapter 10 Solutions

Fundamentals of Heat and Mass Transfer

Ch. 10 - Show that, for water at 1-atm pressure with...Ch. 10 - The surface of a horizontal. 7-mm-diameter...Ch. 10 - The role of surface tension in bubble formation...Ch. 10 - Estimate the heat transfer coefficient, h,...Ch. 10 - Prob. 10.5P Ch. 10 - Prob. 10.6P Ch. 10 - Prob. 10.7P Ch. 10 - Prob. 10.8P Ch. 10 - Calculate the critical heat flux on a large...Ch. 10 - Prob. 10.11P

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.

The total condensation rate to the pipe. The heat transfer rate to the pipe.

Solution Summary: The author describes the total condensation rate to the pipe, the heat transfer rate, and the Reynolds number for the wavy laminar film condensation.

Videos

The total condensation rate to the pipe. The heat transfer rate to the pipe.

Want to see the full answer?

Chapter 10 Solutions

The total condensation rate to the pipe.

The heat transfer rate to the pipe.