Fundamentals of Heat and Mass Transfer
Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470501979
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Chapter 3, Problem 3.73P

The energy transferred from the anterior chamber of the eye through the cornea varies considerably depending on whether a contact lens is worn. Treat the eye as a spherical system and assume the system to be at steady state. The convection coefficient h o is unchanged with and without the contact lens in place. The cornea and the lens cover one-third of the spherical surface area.

Chapter 3, Problem 3.73P, The energy transferred from the anterior chamber of the eye through the cornea varies considerably
Values of the parameters representing this situation are as follows:

   r 1 = 10.2 mm r 2 = 12.7 mm r 3 = 16.5 mm T , o = 21 ° C T , i = 37 ° C k 2 = 0.80 W/m K k 1 = 0.35 W/m K h o = 6 W/m 2 K h i = 12 W/m 2 K

  1. Construct the thermal circuits. labeling all potentials and flows for the systems excluding the contact lens and including the contact lens. Write resistance elements in terms of appropriateparameters.
  2. Determine the heat loss from the anterior chamber with and without the contact lens in place.
  3. Discuss the implication of your results.

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Chapter 3 Solutions

Fundamentals of Heat and Mass Transfer

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