Wang, S.K. and Lavan, Z. “Air-Conditioning and Refrigeration” Mechanical Engineering Handbook Ed. Frank Kreith Boca Raton: CRC Press LLC, 1999
c
1999 by CRC Press LLC
Air-Conditioning and Refrigeration
Shan K. Wang
Individual Consultant
9.1 9.2
Introduction ......................................................................9-2
Air-conditioning • Air-Conditioning Systems • AirConditioning Project Development and System Design
Zalman Lavan
Professor Emeritus, Illinois Institute of Technology
Psychrometrics ...............................................................9-11
Moist Air • Humidity and Enthalpy • Moist Volume, Density, Specific Heat, and Dew Point • Thermodynamic Wet Bulb Temperature and Wet Bulb Temperature • Psychometric Charts
9.3
Air-Conditioning Processes and Cycles ........................9-18
Air-Conditioning Processes • Space Conditioning, Sensible Cooling, and Sensible Heating Processes • Humidifying and Cooling and Dehumidifying Processes • Air-Conditioning Cycles and Operating Modes
9.4
Refrigerants and Refrigeration Cycles ..........................9-34
Refrigeration and Refrigeration Systems • Refrigerants, Cooling Mediums, and Absorbents • Classification of Refrigerants • Required Properties of Refrigerants • Ideal Single-Stage Vapor Compression Cycle • Coefficient of Performance of Refrigeration Cycle • Subcooling and Superheating • Refrigeration Cycle of Two-Stage Compound Systems with a Flash Cooler • Cascade System Characteristics
9.5
Outdoor Design Conditions and Indoor Design Criteria ...............................................................9-48
Outdoor Design Conditions • Indoor Design Criteria and Thermal Comfort • Indoor Temperature, Relative Humidity, and Air Velocity • Indoor Air Quality and Outdoor Ventilation Air Requirements
9.6
Load Calculations ..........................................................9-54
Space Loads • Moisture Transfer in Building Envelope •...