About the Authors |
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xvii | |
Foreword |
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xix | |
Preface |
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xxi | |
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1 | (64) |
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1 | (1) |
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2 | (8) |
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2 | (1) |
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3 | (1) |
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1.2.3 Supplementary Units |
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4 | (6) |
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10 | (1) |
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11 | (2) |
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1.4.1 Extensive Properties |
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12 | (1) |
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1.4.2 Intensive Properties |
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13 | (1) |
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13 | (2) |
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15 | (2) |
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17 | (3) |
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20 | (2) |
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22 | (4) |
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26 | (1) |
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1.11 Equation of State and Perfect Gas Law |
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26 | (1) |
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1.12 Phase Diagram of Water |
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27 | (2) |
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1.13 Conservation of Mass |
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29 | (3) |
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1.13.1 Conservation of Mass for an Open System |
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30 | (2) |
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1.13.2 Conservation of Mass for a Closed System |
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32 | (1) |
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32 | (9) |
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41 | (1) |
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1.16 Laws of Thermodynamics |
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42 | (1) |
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1.16.1 First Law of Thermodynamics |
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42 | (1) |
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1.16.2 Second Law of Thermodynamics |
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42 | (1) |
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43 | (2) |
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45 | (1) |
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1.19 Energy Balance for a Closed System |
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45 | (10) |
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45 | (1) |
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46 | (9) |
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1.20 Energy Balance for an Open System |
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55 | (1) |
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1.20.1 Energy Balance for Steady Flow Systems |
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56 | (1) |
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1.21 A Total Energy Balance |
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56 | (3) |
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59 | (1) |
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59 | (6) |
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60 | (3) |
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63 | (1) |
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64 | (1) |
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Chapter 2 Fluid Flow in Food Processing |
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65 | (146) |
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2.1 Liquid Transport Systems |
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66 | (6) |
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2.1.1 Pipes for Processing Plants |
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66 | (2) |
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68 | (4) |
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2.2 Properties of Liquids |
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72 | (9) |
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2.2.1 Terminology Used in Material Response to Stress |
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72 | (1) |
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73 | (1) |
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73 | (8) |
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2.3 Handling Systems for Newtonian Liquids |
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81 | (19) |
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2.3.1 The Continuity Equation |
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82 | (2) |
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84 | (4) |
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2.3.3 Entrance Region and Fully Developed Flow |
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88 | (2) |
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2.3.4 Velocity Profile in a Liquid Flowing Under Fully Developed Flow Conditions |
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90 | (6) |
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2.3.5 Forces Due to Friction |
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96 | (4) |
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2.4 Force Balance on a Fluid Element Flowing in a Pipe---Derivation of Bernoulli Equation |
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100 | (7) |
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2.5 Energy Equation for Steady Flow of Fluids |
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107 | (13) |
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111 | (1) |
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111 | (2) |
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113 | (1) |
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2.5.4 Frictional Energy Loss |
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113 | (3) |
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2.5.5 Power Requirements of a Pump |
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116 | (4) |
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2.6 Pump Selection and Performance Evaluation |
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120 | (17) |
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120 | (2) |
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122 | (1) |
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2.6.3 Pump Performance Characteristics |
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122 | (4) |
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2.6.4 Pump Characteristic Diagram |
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126 | (1) |
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2.6.5 Net Positive Suction Head |
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127 | (4) |
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2.6.6 Selecting a Pump for a Liquid Transport System |
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131 | (5) |
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136 | (1) |
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137 | (12) |
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141 | (2) |
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143 | (4) |
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147 | (1) |
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2.7.4 Variable-Area Meters |
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147 | (1) |
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2.7.5 Other Measurement Methods |
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148 | (1) |
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2.8 Measurement of Viscosity |
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149 | (7) |
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2.8.1 Capillary Tube Viscometer |
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149 | (2) |
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2.8.2 Rotational Viscometer |
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151 | (3) |
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2.8.3 Influence of Temperature on Viscosity |
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154 | (2) |
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2.9 Flow Characteristics of Non-Newtonian Fluids |
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156 | (14) |
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2.9.1 Properties of Non-Newtonian Fluids |
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156 | (7) |
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2.9.2 Velocity Profile of a Power Law Fluid |
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163 | (1) |
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2.9.3 Volumetric Flow Rate of a Power Law Fluid |
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163 | (1) |
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2.9.4 Average Velocity in a Power Law Fluid |
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164 | (1) |
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2.9.5 Friction Factor and Generalized Reynolds Number for Power Law Fluids |
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164 | (3) |
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2.9.6 Computation of Pumping Requirement of Non-Newtonian Liquids |
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167 | (3) |
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2.10 Transport of Solid Foods |
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170 | (9) |
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2.10.1 Properties of Granular Materials and Powders |
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171 | (5) |
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2.10.2 Flow of Granular Foods |
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176 | (3) |
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2.11 Process Controls in Food Processing |
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179 | (12) |
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2.11.1 Processing Variables and Performance Indicators |
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181 | (2) |
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2.11.2 Input and Output Signals to Control Processes |
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183 | (1) |
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2.11.3 Design of a Control System |
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183 | (8) |
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191 | (5) |
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191 | (2) |
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2.12.2 Liquid Level in a Tank |
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193 | (1) |
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194 | (1) |
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195 | (1) |
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2.12.5 Glossary of Terms Important in Data Acquisition |
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196 | (1) |
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2.13 Dynamic Response Characteristics of Sensors |
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196 | (15) |
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200 | (5) |
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205 | (2) |
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207 | (4) |
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Chapter 3 Resource Sustainability |
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211 | (54) |
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211 | (17) |
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3.1.1 Steam Generation Systems |
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212 | (3) |
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3.1.2 Thermodynamics of Phase Change |
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215 | (3) |
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218 | (6) |
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224 | (4) |
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228 | (6) |
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230 | (1) |
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3.2.2 Mass and Energy Balance Analysis |
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231 | (2) |
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3.2.3 Burner Efficiencies |
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233 | (1) |
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3.3 Electric Power Utilization |
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234 | (10) |
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3.3.1 Electrical Terms and Units |
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236 | (1) |
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237 | (1) |
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238 | (2) |
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240 | (1) |
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3.3.5 Electrical Controls |
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241 | (1) |
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242 | (2) |
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3.4 Energy, Water and Environment |
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244 | (21) |
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3.4.1 Life Cycle Assessment |
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245 | (4) |
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3.4.2 Food System Applications |
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249 | (8) |
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3.4.3 Sustainability Indicators |
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257 | (1) |
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257 | (4) |
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261 | (1) |
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262 | (3) |
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Chapter 4 Heat Transfer in Food Processing |
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265 | (156) |
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4.1 Systems for Heating and Cooling Food Products |
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266 | (9) |
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4.1.1 Plate Heat Exchanger |
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266 | (4) |
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4.1.2 Tubular Heat Exchanger |
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270 | (1) |
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4.1.3 Scraped-Surface Heat Exchanger |
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271 | (2) |
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4.1.4 Steam-Infusion Heat Exchanger |
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273 | (1) |
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274 | (1) |
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4.2 Thermal Properties of Foods |
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275 | (7) |
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275 | (3) |
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4.2.2 Thermal Conductivity |
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278 | (2) |
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4.2.3 Thermal Diffusivity |
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280 | (2) |
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4.3 Modes of Heat Transfer |
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282 | (6) |
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4.3.1 Conductive Heat Transfer |
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282 | (3) |
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4.3.2 Convective Heat Transfer |
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285 | (2) |
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4.3.3 Radiation Heat Transfer |
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287 | (1) |
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4.4 Steady-State Heat Transfer |
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288 | (67) |
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4.4.1 Conductive Heat Transfer in a Rectangular Slab |
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289 | (3) |
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4.4.2 Conductive Heat Transfer through a Tubular Pipe |
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292 | (3) |
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4.4.3 Heat Conduction in Multilayered Systems |
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295 | (8) |
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4.4.4 Estimation of Convective Heat-Transfer Coefficient |
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303 | (17) |
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4.4.5 Estimation of Overall Heat-Transfer Coefficient |
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320 | (4) |
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4.4.6 Fouling of Heat Transfer Surfaces |
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324 | (6) |
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4.4.7 Design of a Tubular Heat Exchanger |
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330 | (8) |
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4.4.8 The Effectiveness-NTIT Method for Designing Heat Exchangers |
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338 | (5) |
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4.4.9 Design of a Plate Heat Exchanger |
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343 | (7) |
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4.4.10 Importance of Surface Characteristics in Radiative Heat Transfer |
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350 | (2) |
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4.4.11 Radiative Heat Transfer between Two Objects |
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352 | (3) |
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4.5 Unsteady-State Heat Transfer |
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355 | (29) |
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4.5.1 Importance of External versus Internal Resistance to Heat Transfer |
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357 | (1) |
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4.5.2 Negligible Internal Resistance to Heat Transfer (NBi < 0.1)--- A Lumped System Analysis |
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358 | (5) |
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4.5.3 Finite Internal and Surface Resistance to Heat Transfer (0.1< NB<40) |
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363 | (3) |
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4.5.4 Negligible Surface Resistance to Heat Transfer (NBi>40) |
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366 | (1) |
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366 | (2) |
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4.5.6 Procedures to Use Temperature---Time Charts |
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368 | (8) |
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4.5.7 Use of fh and j Factors in Predicting Temperature in Transient Heat Transfer |
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376 | (8) |
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4.6 Electrical Conductivity of Foods |
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384 | (3) |
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387 | (2) |
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389 | (32) |
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4.8.1 Mechanisms of Microwave Heating |
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390 | (1) |
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4.8.2 Dielectric Properties |
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391 | (1) |
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4.8.3 Conversion of Microwave Energy into Heat |
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392 | (1) |
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4.8.4 Penetration Depth of Microwaves |
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393 | (2) |
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395 | (1) |
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4.8.6 Microwave Heating of Foods |
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396 | (2) |
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398 | (16) |
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414 | (3) |
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417 | (4) |
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Chapter 5 Preservation Processes |
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421 | (54) |
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421 | (10) |
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5.1.1 Pasteurization and Blanching Systems |
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422 | (2) |
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5.1.2 Commercial Sterilization Systems |
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424 | (4) |
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5.1.3 Ultra-High Pressure Systems |
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428 | (2) |
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5.1.4 Pulsed Electric Field Systems |
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430 | (1) |
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5.1.5 Alternative Preservation Systems |
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431 | (1) |
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5.2 Microbial Survivor Curves |
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431 | (5) |
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5.3 Influence of External Agents |
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436 | (4) |
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440 | (1) |
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441 | (1) |
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5.6 General Method for Process Calculation |
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442 | (18) |
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5.6.1 Applications to Pasteurization |
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444 | (3) |
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5.6.2 Commercial Sterilization |
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447 | (3) |
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5.6.3 Aseptic Processing and Packaging |
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450 | (8) |
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458 | (2) |
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460 | (15) |
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464 | (3) |
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467 | (4) |
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471 | (1) |
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472 | (3) |
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475 | (46) |
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6.1 Selection of a Refrigerant |
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476 | (4) |
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6.2 Components of a Refrigeration System |
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480 | (10) |
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481 | (2) |
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483 | (3) |
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486 | (2) |
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488 | (2) |
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6.3 Pressure-Enthalpy Charts |
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490 | (10) |
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6.3.1 Pressure-Enthalpy Tables |
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495 | (1) |
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6.3.2 Use of Computer-Aided Procedures to Determine Thermodynamic Properties of Refrigerants |
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496 | (4) |
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6.4 Mathematical Expressions Useful in Analysis of Vapor-Compression Refrigeration |
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500 | (12) |
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500 | (1) |
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501 | (1) |
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501 | (1) |
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501 | (1) |
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6.4.5 Coefficient of Performance |
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502 | (1) |
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6.4.6 Refrigerant Flow Rate |
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502 | (10) |
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6.5 Use of Multistage Systems |
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512 | (9) |
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6.5.1 Flash Gas Removal System |
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512 | (5) |
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517 | (2) |
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519 | (1) |
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520 | (1) |
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521 | (44) |
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522 | (8) |
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7.1.1 Indirect Contact Systems |
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522 | (5) |
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7.1.2 Direct-Contact Systems |
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527 | (3) |
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7.2 Frozen-Food Properties |
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530 | (4) |
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530 | (1) |
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7.2.2 Thermal Conductivity |
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531 | (1) |
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531 | (2) |
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7.2.4 Apparent Specific Heat |
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533 | (1) |
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7.2.5 Apparent Thermal Diffusivity |
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533 | (1) |
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534 | (18) |
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536 | (4) |
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7.3.2 Other Freezing-Time Prediction Methods |
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540 | (1) |
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7.3.3 Pham's Method to Predict Freezing Time |
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540 | (4) |
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7.3.4 Prediction of Freezing Time of Finite-Shaped Objects |
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544 | (4) |
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7.3.5 Experimental Measurement of Freezing Time |
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548 | (1) |
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7.3.6 Factors Influencing Freezing Time |
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548 | (1) |
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549 | (1) |
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549 | (3) |
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552 | (13) |
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7.4.1 Quality Changes in Foods during Frozen Storage |
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552 | (4) |
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556 | (4) |
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560 | (1) |
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561 | (4) |
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565 | (28) |
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8.1 Boiling-Point Elevation |
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567 | (2) |
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569 | (7) |
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8.2.1 Batch-Type Pan Evaporator |
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569 | (1) |
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8.2.2 Natural Circulation Evaporators |
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570 | (1) |
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8.2.3 Rising-Film Evaporator |
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570 | (1) |
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8.2.4 Falling-Film Evaporator |
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571 | (1) |
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8.2.5 Rising/Falling-Film Evaporator |
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571 | (2) |
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8.2.6 Forced-Circulation Evaporator |
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573 | (1) |
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8.2.7 Agitated Thin-Film Evaporator |
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573 | (3) |
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8.3 Design of a Single-Effect Evaporator |
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576 | (5) |
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8.4 Design of a Multiple-Effect Evaporator |
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581 | (6) |
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8.5 Vapor Recompression Systems |
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587 | (6) |
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8.5.1 Thermal Recompression |
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587 | (1) |
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8.5.2 Mechanical Vapor Recompression |
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588 | (1) |
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588 | (3) |
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591 | (1) |
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591 | (2) |
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593 | (24) |
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9.1 Properties of Dry Air |
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593 | (2) |
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593 | (1) |
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9.1.2 Specific Volume of Dry Air |
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594 | (1) |
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9.1.3 Specific Heat of Dry Air |
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594 | (1) |
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9.1.4 Enthalpy of Dry Air |
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594 | (1) |
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9.1.5 Dry Bulb Temperature |
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595 | (1) |
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9.2 Properties of Water Vapor |
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595 | (1) |
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9.2.1 Specific Volume of Water Vapor |
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595 | (1) |
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9.2.2 Specific Heat of Water Vapor |
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595 | (1) |
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9.2.3 Enthalpy of Water Vapor |
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596 | (1) |
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9.3 Properties of Air---Vapor Mixtures |
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596 | (8) |
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596 | (1) |
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9.3.2 Dew-Point Temperature |
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596 | (1) |
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9.3.3 Humidity Ratio (or Moisture Content) |
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597 | (1) |
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598 | (1) |
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9.3.5 Humid Heat of an Air-Water Vapor Mixture |
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598 | (1) |
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599 | (1) |
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9.3.7 Adiabatic Saturation of Air |
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599 | (2) |
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9.3.8 Wet Bulb Temperature |
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601 | (3) |
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9.4 The Psychrometric Chart |
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604 | (13) |
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9.4.1 Construction of the Chart |
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604 | (2) |
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9.4.2 Use of Psychrometric Chart to Evaluate Complex Air-Conditioning Processes |
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606 | (5) |
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611 | (3) |
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614 | (1) |
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615 | (2) |
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617 | (28) |
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10.1 The Diffusion Process |
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618 | (14) |
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10.1.1 Steady-State Diffusion of Gases (and Liquids) through Solids |
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621 | (1) |
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10.1.2 Convective Mass Transfer |
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622 | (4) |
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10.1.3 Laminar Flow Over a Flat Plate |
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626 | (4) |
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10.1.4 Turbulent Flow Past a Flat Plate |
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630 | (1) |
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10.1.5 Laminar Flow in a Pipe |
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630 | (1) |
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10.1.6 Turbulent Flow in a Pipe |
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631 | (1) |
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10.1.7 Mass Transfer for Flow Over Spherical Objects |
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631 | (1) |
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10.2 Unsteady-State Mass Transfer |
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632 | (13) |
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10.2.1 Transient-State Diffusion |
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633 | (5) |
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10.2.2 Diffusion of Gases |
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638 | (3) |
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641 | (2) |
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643 | (1) |
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644 | (1) |
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Chapter 11 Membrane Separation |
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645 | (30) |
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11.1 Electrodialysis Systems |
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647 | (4) |
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11.2 Reverse Osmosis Membrane Systems |
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651 | (7) |
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11.3 Membrane Performance |
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658 | (1) |
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11.4 Ultrafiltration Membrane Systems |
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659 | (2) |
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11.5 Concentration Polarization |
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661 | (6) |
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11.6 Types of Reverse-Osmosis and Ultrafiltration Systems |
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667 | (8) |
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668 | (1) |
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668 | (1) |
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668 | (3) |
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671 | (1) |
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671 | (1) |
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672 | (2) |
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674 | (1) |
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675 | (36) |
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12.1 Basic Drying Processes |
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675 | (7) |
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676 | (3) |
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12.1.2 Moisture Diffusion |
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679 | (1) |
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12.1.3 Drying-Rate Curves |
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680 | (1) |
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12.1.4 Heat and Mass Transfer |
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680 | (2) |
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682 | (5) |
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12.2.1 Tray or Cabinet Dryers |
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682 | (1) |
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683 | (1) |
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684 | (1) |
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12.2.4 Fluidized-Bed Drying |
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685 | (1) |
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685 | (1) |
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686 | (1) |
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12.3 Dehydration System Design |
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687 | (24) |
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12.3.1 Mass and Energy Balance |
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687 | (5) |
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12.3.2 Drying-Time Prediction |
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692 | (10) |
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702 | (5) |
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707 | (1) |
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708 | (3) |
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Chapter 13 Supplemental Processes |
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711 | (32) |
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711 | (10) |
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13.1.1 Operating Equations |
|
|
711 | (6) |
|
13.1.2 Mechanisms of Filtration |
|
|
717 | (1) |
|
13.1.3 Design of a Filtration System |
|
|
718 | (3) |
|
|
721 | (6) |
|
13.2.1 Sedimentation Velocities for Low-Concentration Suspensions |
|
|
721 | (3) |
|
13.2.2 Sedimentation in High-Concentration Suspensions |
|
|
724 | (3) |
|
|
727 | (4) |
|
|
727 | (1) |
|
13.3.2 Rate of Separation |
|
|
727 | (2) |
|
13.3.3 Liquid-Liquid Separation |
|
|
729 | (2) |
|
13.3.4 Particle-Gas Separation |
|
|
731 | (1) |
|
|
731 | (12) |
|
13.4.1 Agitation Equipment |
|
|
733 | (3) |
|
13.4.2 Power Requirements of Impellers |
|
|
736 | (4) |
|
|
740 | (1) |
|
|
741 | (1) |
|
|
742 | (1) |
|
Chapter 14 Extrusion Processes for Foods |
|
|
743 | (24) |
|
14.1 Introduction and Background |
|
|
743 | (1) |
|
14.2 Basic Principles of Extrusion |
|
|
744 | (7) |
|
|
751 | (6) |
|
|
752 | (1) |
|
|
753 | (1) |
|
14.3.3 Single Screw Extruders |
|
|
754 | (2) |
|
14.3.4 Twin-Screw Extruders |
|
|
756 | (1) |
|
14.4 Extrusion System Design |
|
|
757 | (5) |
|
14.5 Design of More Complex Systems |
|
|
762 | (5) |
|
|
763 | (1) |
|
|
764 | (1) |
|
|
765 | (2) |
|
Chapter 15 Packaging Concepts |
|
|
767 | (26) |
|
|
767 | (1) |
|
|
768 | (1) |
|
|
769 | (1) |
|
15.4 Product Communication |
|
|
770 | (1) |
|
|
770 | (1) |
|
15.6 Mass Transfer in Packaging Materials |
|
|
770 | (6) |
|
15.6.1 Permeability of Packaging Material to "Fixed" Gases |
|
|
773 | (3) |
|
15.7 Innovations in Food Packaging |
|
|
776 | (4) |
|
|
777 | (1) |
|
|
777 | (1) |
|
15.7.3 Intelligent Packaging |
|
|
778 | (2) |
|
15.8 Food Packaging and Product Shelf-Life |
|
|
780 | (8) |
|
15.8.1 Scientific Basis for Evaluating Shelf Life |
|
|
780 | (8) |
|
|
788 | (5) |
|
|
788 | (1) |
|
|
789 | (1) |
|
|
790 | (3) |
|
|
793 | (55) |
|
A.1 SI System of Units and Conversion Factors |
|
|
793 | (6) |
|
A.1.1 Rules for Using SI Units |
|
|
793 | (1) |
|
|
793 | (3) |
|
Table A.1.2 Useful Conversion Factors |
|
|
796 | (2) |
|
Table A.1.3 Conversion Factors for Pressure |
|
|
798 | (1) |
|
A.2 Physical Properties of Foods |
|
|
799 | (10) |
|
Table A.2.1 Specific Heat of Foods |
|
|
799 | (1) |
|
Table A.2.2 Thermal Conductivity of Selected Food Products |
|
|
800 | (2) |
|
Table A.2.3 Thermal Diffusivity of Some Foodstuffs |
|
|
802 | (1) |
|
Table A.2.4 Viscosity of Liquid Foods |
|
|
803 | (1) |
|
Table A.2.5 Properties of Ice as a Function of Temperature |
|
|
804 | (1) |
|
Table A.2.6 Approximate Heat Evolution Rates of Fresh Fruits and Vegetables When Stored at Temperatures Shown |
|
|
804 | (2) |
|
Table A.2.7 Enthalpy of Frozen Foods |
|
|
806 | (1) |
|
Table A.2.8 Composition Values of Selected Foods |
|
|
807 | (1) |
|
Table A.2.9 Coefficients to Estimate Food Properties |
|
|
808 | (1) |
|
A.3 Physical Properties of Nonfood Materials |
|
|
809 | (5) |
|
Table A.3.1 Physical Properties of Metals |
|
|
809 | (1) |
|
Table A.3.2 Physical Properties of Nonmetals |
|
|
810 | (2) |
|
Table A.3.3 Emissivity of Various Surfaces |
|
|
812 | (2) |
|
A.4 Physical Properties of Water and Air |
|
|
814 | (5) |
|
Table A.4.1 Physical Properties of Water at the Saturation Pressure |
|
|
814 | (1) |
|
Table A.4.2 Properties of Saturated Steam |
|
|
815 | (2) |
|
Table A.4.3 Properties of Superheated Steam |
|
|
817 | (1) |
|
Table A.4.4 Physical Properties of Dry Air at Atmospheric Pressure |
|
|
818 | (1) |
|
|
819 | (2) |
|
Figure A.5.1 Psychrometric chart for high temperatures |
|
|
819 | (1) |
|
Figure A.5.2 Psychrometric chart for low temperatures |
|
|
820 | (1) |
|
A.6 Pressure-Enthalpy Data |
|
|
821 | (14) |
|
Figure A.6.1 Pressure---enthalpy diagram for Refrigerant 12 |
|
|
821 | (1) |
|
Table A.6.1 Properties of Saturated Liquid and Vapor R-12 |
|
|
822 | (3) |
|
Figure A.6.2 Pressure---enthalpy diagram of superheated R-12 vapor |
|
|
825 | (1) |
|
Table A.6.2 Properties of Saturated Liquid and Vapor R-717 (Ammonia) |
|
|
826 | (3) |
|
Figure A.6.3 Pressure---enthalpy diagram of superheated R-717 (ammonia) vapor |
|
|
829 | (1) |
|
Table A.6.3 Properties of Saturated Liquid and Vapor R-134a |
|
|
830 | (3) |
|
Figure A.6.4 Pressure-enthalpy diagram of R-134a |
|
|
833 | (1) |
|
Figure A.6.5 Pressure---enthalpy diagram of R-134a (expanded scale) |
|
|
834 | (1) |
|
A.7 Symbols for use in Drawing Food Engineering Process Equipment |
|
|
835 | (5) |
|
|
840 | (4) |
|
Table A.8.1 Numerical Data and Area/Volume of Objects |
|
|
840 | (1) |
|
Figure A.8.1 Temperature at the geometric center of a sphere (expanded scale) |
|
|
841 | (1) |
|
Figure A.8.2 Temperature at the axis of an infinitely long cylinder (expanded scale) |
|
|
842 | (1) |
|
Figure A.8.3 Temperature at the midplane of an infinite slab (expanded scale) |
|
|
843 | (1) |
|
|
844 | (4) |
|
A.9.1 Buckingham π Theorem |
|
|
844 | (1) |
|
Table A.9.1 Dimensions of Selected Experimental Variables |
|
|
845 | (3) |
Bibliography |
|
848 | (3) |
Index |
|
851 | (12) |
Food Science and Technology International Series |
|
863 | |