Applications Of Heat And Mass Transfer

Front 1

Define pool boiling.

Back 1

(REPLACE)

Front 2

Define forced convection boiling.

Back 2

(REPLACE)

Front 3

Define subcooled boiling.

Back 3

(REPLACE)

Front 4

Define saturated boiling.

Back 4

(REPLACE)

Front 5

Define excess temperature.

Back 5

Delta T(ex) = T_s - T_sat

Front 6

Define free convection boiling.

Back 6

(REPLACE)

Front 7

Define nucleate boiling.

Back 7

(REPLACE)

Front 8

Define film boiling.

Back 8

(REPLACE)

Front 9

Define transition boiling.

Back 9

(REPLACE)

Front 10

Define critical heat flux.

Back 10

(REPLACE)

Front 11

Define the Leidenfrost point.

Back 11

(REPLACE)

Front 12

Define homogenous condensation.

Back 12

Cold vapor contacts vapor

Front 13

Define direct contact condensation.

Back 13

Cold liquid contacts vapor

Front 14

Define surface condensation.

Back 14

Cold solid contacts vapor

Front 15

Define film condensation.

Back 15

(REPLACE)

Front 16

Define dropwise condensation.

Back 16

(REPLACE)

Front 17

Define the dimensionless parameter: Reynolds (Re)

Back 17

Inertial Forces/Viscous Forces

Front 18

Define the dimensionless parameter: Prandtl (Pr)

Back 18

Kinematic Viscosity/Thermal Diffusivity

Front 19

Define the dimensionless parameter: Jakob (Ja)

Back 19

Phase change heat transfer

Front 20

Define the dimensionless parameter: Bond (Bo)

Back 20

Gravitational Forces

Front 21

Sketch the boiling curve and identify key features and regimes.

Back 21

Look at the picture. It's pretty close.

Front 22

Define the mean vapor mass fraction for internal forced convection boiling.

Back 22

(REPLACE)

Front 23

Explain any major safety considerations for the boiling or condensation process.

Back 23

(REPLACE)

Front 24

Define parallel flow.

Back 24

(REPLACE)

Front 25

Define counter flow.

Back 25

(REPLACE)

Front 26

Define cross flow.

Back 26

(REPLACE)

Front 27

Define single pass.

Back 27

(REPLACE)

Front 28

Define multi-pass.

Back 28

(REPLACE)

Front 29

Define fouling factor.

Back 29

(REPLACE)

Front 30

Define thermal resistance.

Back 30

(REPLACE)

Front 31

Define overall heat transfer coefficient.

Back 31

U

Front 32

Define overall surface efficiency.

Back 32

(REPLACE)

Front 33

Define log mean temperature difference.

Back 33

(REPLACE)

Front 34

Define minimum heat capacity rate.

Back 34

(REPLACE)

Front 35

Define maximum heat capacity rate.

Back 35

(REPLACE)

Front 36

Define heat capacity ratio.

Back 36

(REPLACE)

Front 37

Define effectiveness.

Back 37

(REPLACE)

Front 38

Define NTU.

Back 38

(REPLACE)

Front 39

Define mixed and unmixed flow in cross-flow heat exchangers.

Back 39

(REPLACE)

Front 40

Describe the configuration of the following types of heat exchangers: concentric tube, shell and tube, cross flow, and compact.

Back 40

(REPLACE)

Front 41

Define the overall heat transfer coefficient in terms of thermal resistances in series.

Back 41

(REPLACE)

Front 42

Explain the use of baffles in heat exchangers.

Back 42

(REPLACE)

Front 43

Explain when the outlet temperatures for the cold fluid can and cannot be higher than the outlet temperature for the hot fluid.

Back 43

(REPLACE)

Front 44

Explain how increasing the surface area for the heat exchange affects the heat transfer rate and the effectiveness.

Back 44

(REPLACE)

Front 45

Explain how increasing the overall heat transfer coefficient affects the heat transfer rate and the effectiveness.

Back 45

(REPLACE)

Front 46

Define relative volatility.

Back 46

(REPLACE)

Front 47

Define heavy key.

Back 47

(REPLACE)

Front 48

Define light key.

Back 48

(REPLACE)

Front 49

Define intensive and extensive variables.

Back 49

(REPLACE)

Front 50

Explain the Gibbs phase rule to determine the degrees of freedom for a system.

Back 50

(REPLACE)

Front 51

Define the equilibrium constant.

Back 51

(REPLACE)

Front 52

Define the bubble point and dew points for a binary vapor-liquid mixture using Raoult's Law or modified Raoult's Law.

Back 52

(REPLACE)

Front 53

Define and determine azeotropes for binary vapor-liquid mixtures.

Back 53

(REPLACE)

Front 54

Define liquid-liquid extraction.

Back 54

(REPLACE)

Front 55

Define solvent.

Back 55

(REPLACE)

Front 56

Define carrier.

Back 56

(REPLACE)

Front 57

Define solute.

Back 57

(REPLACE)

Front 58

Define Extraction factor.

Back 58

(REPLACE)

Front 59

Define partially miscible systems.

Back 59

(REPLACE)

Front 60

Define minimum solvent and maximum solvent flow rate.

Back 60

(REPLACE)

Front 61

Define slurry.

Back 61

(REPLACE)

Front 62

Define overflow.

Back 62

(REPLACE)

Front 63

Define underflow.

Back 63

(REPLACE)

Front 64

Define leaching stage.

Back 64

(REPLACE)

Front 65

Define constant solution underflow.

Back 65

(REPLACE)

Front 66

Define variable solution underflow.

Back 66

(REPLACE)

Front 67

List and explain the assumptions for an ideal leaching stage.

Back 67

(REPLACE)

Front 68

Identify different types of cascade configurations.

Back 68

(REPLACE)

Front 69

Define cascade and hybrid systems.

Back 69

(REPLACE)

Front 70

Define and identify sections of a cascade system.

Back 70

(REPLACE)

Front 71

Define the washing factor.

Back 71

(REPLACE)

Front 72

Define absorption and stripping factor.

Back 72

(REPLACE)

Front 73

Discuss different types of equipment for absorption and stripping processes.

Back 73

(REPLACE)

Front 74

Define three different tray types for tray towers. Discuss pros and cons of each type.

Back 74

(REPLACE)

Front 75

List and discuss design considerations for absorption or stripping processes.

Back 75

(REPLACE)

Front 76

Explain different ways to calculate efficiency of absorption and stripping towers. (Include overall efficiency and Murphree vapor efficiency)

Back 76

(REPLACE)

Front 77

Describe four ways to determine overall column efficiency.

Back 77

(REPLACE)

Front 78

Define HETP.

Back 78

(REPLACE)

Front 79

Define HTU.

Back 79

(REPLACE)

Front 80

Define H_OG.

Back 80

(REPLACE)

Front 81

Define NTU.

Back 81

(REPLACE)

Front 82

Define N_OG.

Back 82

(REPLACE)

Front 83

Describe the different possibilities for driving forces used in determining rate based separations found in packed columns.

Back 83

(REPLACE)

Front 84

Describe the local and overall mass transfer coefficients and how they are related to one another in rate based separation processes.

Back 84

(REPLACE)

Front 85

What are the basic assumptions included in the rate based separations method for packed columns?

Back 85

(REPLACE)

Front 86

How do the operating lines differ in concentrated absorption and stripping processes from the dilute systems we focused on for Exam 2?

Back 86

(REPLACE)

Front 87

Define distillation.

Back 87

(REPLACE)

Front 88

Define refulx ratio.

Back 88

(REPLACE)

Front 89

Define boilup ratio.

Back 89

(REPLACE)

Front 90

Draw and label a simple binary distillation column with a total condenser and a partial reboiler.

Back 90

(Reference it yourself)

Front 91

List at least three design considerations for a binary distillation system.

Back 91

(REPLACE)

Front 92

List and explain the assumptions made for constant molal overflow.

Back 92

(REPLACE)

Front 93

Sketch and label and example McCabe-Thiele diagram for binary distillation (Include operating lines and compositions where appropriate).

Back 93

(REPLACE)

Front 94

Define q thermal quality of the feed) and list the possible values for different feed conditions.

Back 94

(REPLACE)

Front 95

Describe how the McCabe-Thiele diagram is altered with the presence of multiple feed streams, side streams, open steam, or direct cooling.

Back 95

(Refer to Test III)

Front 96

Describe four methods for calculating overall column efficieny for a distillation column.

Back 96

(REPLACE)

Front 97

Describe how the feed stage is determined on a McCabe-Thiele diagram.

Back 97

(REPLACE)

Front 98

List at least two reasons why liquid-liquid extraction is preferred over distillation.

Back 98

(REPLACE)

Front 99

Describe four different types of equipment used in liquid-liquid extraction, includeding advantages and disadvantages of each type.

Back 99

(REPLACE)

Front 100

Explain at least three different design considerations for liquid-liquid extraction.

Back 100

(REPLACE)

Front 101

Describe the FUG method for multicomponent distillation.

Back 101

F - Fenske determines N_min
U - Underwood determines R_min
G - Gilliland uses N_min and R_min to determine N_actual and R_actual.

Front 102

Explain the assumptions made in the Fenske equation to approximate N_min.

Back 102

(REPLACE)

Front 103

Explain the best way to calculate the distribution of non-key components using the Fenske equation.

Back 103

(REPLACE)

Front 104

Explain the difference between Class 1 and Class 2 pinch points.

Back 104

(REPLACE)

Front 105

Explain the range of most used reflux rations and to which system they are commonly applied.

Back 105

(REPLACE)

Front 106

Describe the benefits of batch distillation versus continuous distillation.

Back 106

(REPLACE)

Front 107

Explain why the distillate product composition is calculated as an average.

Back 107

(REPLACE)

Front 108

Describe the two different modes of operation for batch distillation including how you would solve them graphically and which circumstances each is most applicable.

Back 108

Constant Reflux -
Constant distillate composition -

Front 109

Define leachant.

Back 109

(REPLACE)

Front 110

Define leached solids.

Back 110

(REPLACE)

Front 111

Define slurry.

Back 111

(REPLACE)

Front 112

Define leaching.

Back 112

(REPLACE)

Front 113

Define washing.

Back 113

(REPLACE)

Front 114

Describe two types of solid-solvent contacting.

Back 114

(REPLACE)

Front 115

Describe three types of leaching processes and explain when each method is preferred.

Back 115

Batch -
Semi-Batch -
Continuous -

Front 116

Explain why separate washing stages are included in countercurrent leaching and washing process.

Back 116

(REPLACE)