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자료명/저자사항
Refrigeration principles, practices, and performance / Chris Langley 인기도
발행사항
Clifton Park, NY : Thomson/Delmar Learning, c2008
청구기호
621.56 L283r
자료실
[서울관] 서고(열람신청 후 1층 대출대)
형태사항
xvi, 415 p. : ill. ; 24 cm
표준번호/부호
ISBN: 1418060976 (pbk.)
ISBN: 9781418060978 (pbk.)
제어번호
MONO2200801978
주기사항
Includes index

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목차

Preface xv

Fundamentals 1

Heat and Temperature 1

Specific Heat 3

Latent Heat 3

Change of State 5

Vapor 5

Gas and Vapor 5

Energy 5

Pressure 6

Partial Pressure 7

Heat Transfer 7

Scope of Refrigeration 8

The Compression System of Refrigeration 10

Evaporation 10

Pressure Cycle 14

Temperature Cycle 16

Heat Cycle 17

Liquid--Vapor Cycle 19

Standard Ton Conditions 21

Refrigerants: Physical and Refrigerating Properties 22

Requirements 22

Physical Properties 25

Critical Pressure 28

Historical Development of Refrigerants 29

Water 32

Ammonia 32

Halocarbons 34

Conditions Other Than Standard Ton 36

Changing Refrigerants 37

Handling Refrigerants 38

Refrigerant Cylinder Colors 39

Liquid Feed Devices or Expansion Valves 40

Function of the Expansion Valve 40

Hand Expansion Valve 41

Low-Side Float Valve 42

High-Side Float Valve 44

Capillary Tube 45

Automatic Expansion Valve 46

Thermostatic or Thermal Expansion Valve 48

Solid-State or Thermal-Electric Expansion Valve 54

Liquid Solenoid Valve with Electric Float 55

Liquid Solenoid Valve with Thermal Differential Sensor 56

Liquid Solenoid Valve with Variable-Capacitance Probe 57

Pneumatic High-Side Float 58

Evaporators 60

Requirements for Evaporators 60

Types of Evaporators 61

Flooded Evaporator 62

Dry Evaporator 64

Improved Designs 66

Convection and Forced-Draft Evaporators 67

Evaporator Feeds 69

Surge Drum 69

Recirculated or Overfeed System 70

Oil in Evaporators 71

Compressors 74

How a Compressor Works 74

Historical Development: Compressor Types 80

Construction Details 85

Other Types of Compressors 93

Compressor Sizes 103

Condensers 105

Requirements 105

Operation 105

Air-Cooled Condenser 106

Air- vs. Water-Cooled Condensers 108

Double-Pipe Water-Cooled Condenser 108

Shell-and-Tube Condenser 109

Shell-and-Coil Condenser 110

Water Supply; Cooling Towers 111

Evaporative Condenser 114

Flow Equipment 116

Liquid Receiver 116

Pipes and Piping 116

Hand Valves 119

Filters and Strainers 121

Driers and Dehydrators 122

Oil Traps 123

Automatic Purgers 124

Sight Glasses 125

Heat Exchangers 126

Electrical Controls and Control Valves 128

Backpressure Control 128

Temperature Control 130

High-Pressure and High-Temperature Cut-outs 131

Low-Oil Cut-out 131

Low-Water Cut-out 132

Float Switch 132

Control Applications 132

Solenoid Valve 133

Evaporator Pressure-Regulating Valve 135

Crankcase Pressure-Regulating Valve 136

Crankcase Heater 137

Check Valve 137

Water-Regulating Valve 137

Pressure-Relief Devices 138

Computers and Refrigeration 139

Energy Management 140

Lubrication 142

Oil Types 142

Requirements 143

Oil Foaming 143

Oil Selection 144

Defrosting 147

Defrost Cycle 147

Hot-Gas Defrost 147

Thermobank System 149

Water-Spray Defrost 149

Electric Heater Defrost 149

Defrost Controls 151

Brine Spray 151

Compressor Drives 154

Requirements 154

Electric Drive 154

Potential Relay 156

Contactor and Motor Starter 157

Variable-Frequency Drive 160

Steam Drive 161

Diesel or Gasoline Engine 161

Food Preservation 163

Natural Ripening and Enzyme Action 163

Bacteria and Molds 164

Other Changes 164

Cold Storage 165

Freezing 165

Operating 167

Maintaining Temperature 167

Economy 168

Safety 172

Automatic Refrigeration 178

General Maintenance 178

Servicing 181

Variations from Refrigeration Requirements 181

Food Storage Problems 189

Refrigerated Enclosures 191

Insulation 191

Moisture Proofing 196

Openings and Doors 197

Cabinet Construction 197

Tank and Pipe Insulation 198

Excessive Heat 198

Instruments and Meters 200

Stem Thermometer 200

Dial Thermometer 204

Recording Thermometer 205

Pressure Gage 205

Transducer 208

Thermocouple 208

Thermistor 208

Electric Instruments 208

Heat Calculations 210

Design Temperature 210

The k Factor 211

R Value 212

Usage Factor 214

Condensing Unit Sizing 215

The K Factor 215

Evaporator Sizing 216

Boxes Larger than 1500 Cubic Feet 219

Insulation Thickness 223

Condenser Calculation 223

Humidity in Refrigeration 229

Relative and Absolute Humidities 229

Humidity Measurement 230

Effect of Evaporator Temperature 234

Electronics and Humidity Measurement 236

Compressor Calculations I 237

Refrigerant Tables 237

Compressor Size 238

Compressor Horsepower 241

Complete Analysis of Expansion Valve and Evaporator 242

Pressure--Enthalpy Diagram 243

Sizing Compressors 245

Compressor Calculations II 252

Capacity Variation 252

Effect of Changing Suction Temperature 253

Effect of Changing Condensing Temperature 254

Detailed Standard Ton Conditions 254

Effect of Subcooling 256

Effect of Superheated Suction Vapor 257

Wet Compression 257

Changing Refrigerant 258

Heat Exchangers 260

Two-Stage Systems and Booster Systems 263

Cascade Systems 268

Refrigerant Lines and Pressure Drops 271

Effect of Pressure Drop 271

Calculating Velocity and Pressure Drop 273

Effect of Changing Flow Conditions 277

Brine in Refrigeration 282

Brine Chemistry 284

Corrosion Control 285

Brine Concentration 286

Congealing Tanks and Eutectic Plates 290

Liquid Cooling 292

Beverage Cooling Requirements 292

Water Coolers 292

Beer Coolers 295

Charged Water, Soda Water, and Seltzer 296

Milk Coolers 296

Brewery Refrigeration 297

Refrigeration in Wine Making 299

Complete Systems 301

Commercial Multiplexing 301

Cold Storage 305

Locker Plants 307

Air Conditioning 308

Heat Pumps 311

Ice Making 313

Carbon Dioxide---Dry Ice 318

Carbon Dioxide Refrigeration 318

Manufacture of Dry Ice 318

Advantages and Disadvantages of Dry Ice 320

Uses of Dry Ice 321

Altitude and Its Effects 323

Absorption Systems 327

Continuous Absorption System 328

Diffusion Absorption System 329

Refrigeration Codes 332

Appendix 334

Index 401

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    Designed to provide a basic, straightforward overview of the concepts and principles of HVAC and refrigeration, this book is ideal for readers with a limited amount of experience in the field. Refrigeration Principles, Practices, and Performance begins with an introduction to the basics of refrigeration and HVAC, and then quickly progresses into specific equipment components, eliminating overly technical and lengthy information that is found in many traditional industry books. The focus on presenting the essentials with a simple, easy-to-understand approach makes this book valuable for any reader seeking to master and apply basic refrigeration and HVAC principles.
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