Practical Cooling Technology / Edition 1

by Johnson

Overview

This new text provides the student with an in-depth coverage of all phases of air cooling from window air conditioners to large chilled water systems. Clear and detailed illustrations enhance text descriptions. The accompanying lab manual offers real world exercises relating to the text theory.
ALSO AVAILABLE
Lab Manual, ISBN: 0-8273-7603-0
INSTRUCTOR SUPPLEMENTS
Instructor's Guide, ISBN: 0-8273-6815-1

Product Details

ISBN-13:	9780827368149
Publisher:	Delmar Cengage Learning
Publication date:	11/28/1996
Series:	Heating, Ventilation, and Air Conditioning Ser.
Pages:	672
Product dimensions:	9.06(w) x 11.42(h) x (d)

Table of Contents

Pipe. SERVICE PRACTICES: System Evacuation: Purpose of System Evacuation, Theory Involved with Evacuation, Measuring the Vacuum, Recovering Refrigerant, The Vacuum Pump, Vacuum Pump Oil, Deep Vacuum, Multiple Evacuation, Leak Detection While in a Vacuum, Leak Detection-Standing Pressure Test, Removing Moisture with a Vacuum, General Evacuation Procedures, Gage Manifold Hoses, System Valves, Using Dry Nitrogen, Cleaning a Dirty System. Refrigerant Management- Recovery/Recycling/Reclaiming: Refrigerants and Environment, CFC Refrigerants, HCFC Refrigerants, HFC Refrigerants, Refrigerant Blends, Regulations, Recovery/Recycle/Reclaim, Recovery Requirements, Mechanical Recovery Systems, Reclaiming Refrigerant, Recovering Refrigerant from Window Air Conditioners, Technical Information. System Charging: Charging the Refrigeration System, Vapor Refrigerant Charging, Liquid Refrigerant Charging, Liquid Refrigerant Charging, Weighing Refrigerant, Using Charging Devices. BASIC ELECTRICITY AND ELECTRONICS: Basic Electricity and Magnetism: Structure of Matter, Movement of Electrons, Conductors, Insulators, Electricity Produced from Magnetism. Direct Current, Alternating Current, Electrical Units of Measurement, The Electrical Circuit, Making Electrical Measurements, Ohm s Law, Characteristics of Series Circuits, Characteristics of Parallel Circuits, Electrical Power, Magnetism, Inductance, Transformers, Capacitance, Impedance, Electrical Measuring Instruments, Wire Sizes, Circuit Protection Devices, Semiconductors. Introduction to Automatic Controls: Types of Automatic Controls, Devices that respond to Thermal Change, Bimetal Sensing Devices, Control by FluidExpansion, Electronic Temperature Sensing Devices. Automatic Control Components and Applications: Recognition of Control Components, Temperature Controls, Space-Temperature Controls, Low Voltage, Space-Temperature Control, High Voltage, Sensing Temperature in Airstream, Pressure-sensing Devices, High Pressure Controls, Low Pressure Controls, Oil Pressure Safety Controls, Devices that Control Fluid Flow and Do Not Contain Switches, Water Pressure Regulators, Electro-mechanical controls, Maintenance of Controls, Service Technician Calls. Troubleshooting Basic Controls: Introduction to Troubleshooting, Troubleshooting a Simple Circuit, Troubleshooting a Complex Circuit, Troubleshooting the Thermostat, Troubleshooting Amperage in low Voltage circuits, Troubleshooting Voltage in Low Voltage Circuits, Pictorial and Line Diagrams, Service Tech Calls. Electronic and Programmable Controls: Air Conditioning Applications, Electronic Thermostats, Diagnostic Thermostats, Troubleshooting Electronic Controls, Troubleshooting the Electronic Thermostat, Power Outage and the Electronic Thermostat, Service Technician Calls.ELECTRIC MOTORS FOR CENTRAL AIR CONDITIONING SYSTEMS: Uses of Electric Motors, Parts of an Electric Motor, Electric Motors and Magnetism, Starting Windings, Determining a Motor s Speed, Starting and Running Characteristics, Power Supplies for Electric Motors, Single-Phase Open Motors, Split-Phase Motors, The Centrifugal Switch, The Electronic Relay, Capacitor-Start Motor, Capacitor-Start Capacitor-Run Motor, Permanent Split-Capacitor Motor, The Shaded-Pole Motor, Three-Phase Motor, Single Phase Hermetic Motor, The Potential Relay, The Current Relay, Positive-Temperature-Coefficient Start Device, Two-Speed Compressor Motor, Special Applications Motors, Cooling Electrical Motors. Motor Applications: Application of Motors, The Power Supply, Electric Motor Working Conditions, Insulation Type or Class, Types of Bearings, Motor Mounting Characteristics, Motor Drives. Motor Starting: Intro to Motor Control Devices, Run Load and Locked-Rotor Current, The Relay, The Contactor, Motor Starters, Motor Protection, Inherent Motor Protection, External Motor Protection, Service Factor, National Electrical Code Standards, Temperature Sensing Devices, Magnetic Overload Devices, Restarting the Motor. Troubleshooting Electric Motors: Electric Motor Troubleshooting, Mechanical Motor Problems, Removing Drive Assemblies, Belt Tension, Pulley Alignment, Electrical Problems, Open Windings, Short Motor Windings, Short Circuit to Ground (Frame), Motor Starting Problems, Checking Capacitors, Identification of Capacitors, Wiring and Connectors, Troubleshooting Hermetic Motors, Service Technician Calls. THE AIR CONDITIONING PROCESS: Comfort and Psychrometrics: Comfort, Food Energy and the Body, Body Temperature, The Comfort Chart, Psychrometrics, Moisture in Air, Superheated Gases in Air, Humidity, Dry-Bulb and Wet-Bulb Temperatures, The Psychrometric Chart, Plotting on the Psychrometric Chart, Total Heat. Room Air Conditioners: Air Conditioning and Heating with Room Units, Room Air Conditioning- Cooling, The Refrigeration Cycle-Cooling, Refrigeration Heating Cycle, Installation, Controls for Room Units- Cooling, Controls, Cooling and Heating Units, Maintaining and Servicing Room Units, Service Technician Calls. Evaporators for Central Air Conditioning Systems: Central Air Conditioning, Evaporator Construction, Air Circulation Over the Evaporator Coil, Routing the Evaporator Piping, Operating Conditions of an Evaporator, Types of Evaporator Coils, Condensate and the Evaporator, Sensible and Latent Heat Removal and the Evaporator Coil, Checking Evaporators for Air Flow. Compressors for Central Air Conditioning: Compressor Function, Reciprocating Compressor, Components of a Reciprocating Compressor, Hermetic Compressors, Open Drive Compressors, Reciprocating Compressor Efficiency, Compressor Capacity Control, Rotary Compressors, Scroll Compressors, Motors for Hermetic Compressors. Condensers for Central Air Conditioning: Condensers, Refrigerant to Earth Heat Exchangers, Refrigerant to Water Heat Exchangers, Refrigerant to Air Heat Exchangers. Expansion Devices for Central Air Conditioning: Expansion Devices, Thermostatic Expansion Valve, Thermostatic Expansion Valve Components, The Valve Body, The Diaphragm, The Needle and Seat, The Spring, The Sensing Bulb and Transmission Tube, Types of Bulb Charge, The Liquid Charge Bulb, The Cross Liquid Charge Bulb, The Vapor Charge Bulb, The Cross Vapor Charge Bulb, Functioning Example of a TXV with Internal Equalizer, Thermostatic Expansion Valves with External Equalizers, TXV Responses to Load Changes, TXV Valve Selection, Balanced Port Expansion Valve, Servicing the TXV, Sensing Element Installation, The Solid State Controlled Expansion Valve, Special Considerations for the TXV, The Capillary Tube and Orifice Metering Devices, Operating Charge for the Capillary Tube and Orifice System. APPLICATION, AIR DISTRIBUTION AND INSTALLATION: System Design, Design Conditions, Heat Transfer and Building Materials, Heat Gain Through Walls, Roof and Ceiling Heat Gain, Heat Gain Through Floors, Heat Gain Through Windows and Doors, Solar Heat Gains, Heat Gain Due to Infiltration and Ventilation, Heat Gain Through Duct Work, Internal Heat Gains. Application of Air Conditioning Equipment: Application of Equipment, Types of Equipment, Piping Practices, Refrigerant Line Sizing, Special Application Cooling Equipment. Air Distribution and Balance for Residential and Light Commercial Air-Conditioning: Conditioning Equipment, Correct Air Quantity, The Forced-Air System, The Blower, System Pressures, Air-measuring Instruments for Duct Systems, Types of Fans, Types of Fan Drives, The Supply Duct System, The Plenum System, The Extended Plenum System, The Reducing Plenum System, The Perimeter Loop System, Duct System Standards, Duct Materials, Galvanized Steel Duct, Fiberglass Duct, Spiral Metal Duct, Flexible Duct, Combination Duct Systems, Duct Air Movement, Balancing Dampers, Duct Insulation, Blending the Conditioned Room with Room Air, The Return-Air Duct System, Sizing Duct for Moving Air, Measuring Air Movement for Balancing, Air Friction Chart. Installation for Central Air Conditioning: Intro to Equipment Installation, Square to Rectangular Duct, Round Metal Duct Systems, Flexible Duct, Electrical Installation, Installation of the Refrigerant System, Installing the Split System, The Evaporator Section, The Condensing Unit, Installing Refrigerant Piping. Typical Operating Conditions for Central Air Conditioning: Mechanical Operating Conditions, Relative Humidity and the Load, System Component Relationships Under Load Changes, Evaporator Operating Conditions, High Evaporator Load and a Cool Condenser, Grades of Equipment, Documenting with the Unit, Establishing a Reference Point on Unknown Equipment, Metering Devices for High-Efficiency Equipment, Equipment Efficiency Rating, Typical Electrical Operating Conditions, Matching the Unit to the Correct Power Supply, Starting the Equipment with the Correct Data, Finding a Point of Reference for an Unknown Motor Rating, Determining the Compressor Running Amperage, Compressors Operating at the Full-Load Current, High Voltage, the Compressor, and Current Draw, Current Draw and the Two-Speed Compressor Summary. Troubleshooting: Intro, Mechanical Troubleshooting, Gage Manifold Usage, When to Connect the Gages, Low-Side Gage Readings, High-Side Gage Readings, Temperature Readings, Charging Procedures in the Field, Electrical Troubleshooting, Compressor Overload Problems, Compressor Electrical Checkup, Troubleshooting the Circuit Electrical Protectors-Fuses and Breakers, Service Technician Calls. CHILLED WATER SYSTEMS: Circulating Chilled Water Systems: Chillers, Compression Cycle Chillers, Reciprocating Compressor Chillers, Cylinder Uploading, Scroll Compressor Chillers, Rotary Screw Comressor Chillers, Centrifugal Compressor Chillers (High Pressure), Evaporators for High Pressure Chillers, Direct Expansion Evaporators, Flooded Evaporator Chillers, Condensers for High Pressure Chillers, Water-Cooled Condensers, Condenser Subcooling, Air-cooled Condensers, Subcooling Circuit, Metering Devices for High Pressure Chillers, Thermostatic Expansion Valve, Orifice, Float Type Metering Devices, Electronic Expansion Valve, Low Pressure Chillers, Compressors, Condensers for Low-Pressure Chillers, Metering Devices for Low-Pressure Chillers, Purge Units, Absorption Air Conditioning Chillers, Solution Strength, Solutions Inside the Absorption Systems, Capacity Control, Crystallization, Purge System, Absorption System Heat Exchangers, Direct-Fired Systems, Motors and Drives for Compression Cycle Chillers, Part-Winding Start, Autotransformer Start, Wye-Delta Start, Electronic Starters, Motor Protection, Load-Limiting Devices, Mechanical-Electrical Motor Overload Protection, Electronic Solid-State Overload Device Protection, Anti-Recycle Control, Phase Failure Protection, Voltage Unbalance, Phase Reversal. Cooling Towers and Pumps: Cooling Tower Function, Types of Cooling Towers, Fire Protection, Fill Material, Flow Patterns, Tower Materials, Fan Section, Tower Access, Tower Sump, Makeup Water, Blowdown, Balancing the Water Flow for a Tower, Water Pumps. Operation, Maintenance, and Troubleshooting of Chilled Water Systems: Chiller Start-up, Reciprocation Chiller Start-up, Rotary Screw Chiller Start-up, Centrifugal Chiller Start-up, Scroll and Reciprocating Chiller Operation, Large Positive-Displacement Chiller Operation, Centrifugal Chiller Operation, Air-Cooled Chiller Maintenance, Absorption Chilled Water System Start-up, Absorption Chiller Operating and Maintenance, General Maintenance for Chillers, Technician Service Calls.