BAEN-366 SPRING/09 Homework # 10 Read Chapter 3 Pages 126 132 Answer the following questions 1) What is the physical mechanism associated with cooking in a microwave oven? How do conditions differ from a convectional oven? Microwaves excite the wat

BAEN-366 SPRING/09 Homework #2 Read Chapter 1 Page 2 13 Answer the following questions 1) What is the difference between natural and forced convection? Give an example of each. Natural convection is the flow caused by buoyancy forces due to the dif

BAEN-366 SPRING/09 Homework #3 Read Chapter 1 Page 13 32 Answer the following questions 1) What is "energy storage" Give an example. Energy storage is the amount of energy being kept in a system over a time interval. Example: All the carbohydrates

BAEN-366 SPRING/09 Homework #4 Read Chapter 2 Page 70 73 Read Chapter 3 Page 96 99 Answer the following questions 1) What is the physical significance of each term appearing in the heat equation? Heat Equation: T T T T (K )+ (K )+ (K ) + q =

BAEN-366 SPRING/09 Homework #6 Read Chapter 3: Pages 99-112 Problem 3-9 q ' ' = h ( T - Ts, i ) = 25W q ' ' = 8750 W m2 500 - 25 = 0.25 0.10 0.10 + + KB 60 30
(
m2K
)( 850K - 500K )
Ts, i - Ts, o q' ' = L A LB L + + C K A K

BAEN-366 SPRING/09 Homework # 7 Read Chapter 3 Pages 116 126 Answer the following questions 1) What is contact resistance? It's the thermal resistance resulting from the contact of two surfaces due to imperfections or to the roughness of each mater

BAEN-366 SPRING/09 Homework # 8 Read Chapter 3 Pages 116 126 Answer the following questions 1) In a solid circular cylinder experiencing uniform volumetric heating and convection heat transfer from its surface, how does the heat flux vary with radi

BAEN-366 SPRING/09 Homework # 9 Read Chapter 3 Pages 126 132 Answer the following questions 1) What is the critical radius of insulation for a hollow sphere? Show how to derive this value. 1 1 1 1 1 1 1 + h4r 2 4k r - 4k r + h 4 r 2

BAEN-366 SPRING/09
Homework # 1 Read chapter 1 Page 2-9 Answer the following questions 1) What is heat or work? Energy transferred by interactions of a system with the surroundings 2) What is heat transfer? What is the difference with thermodynam