Description
Mastering fundamentals, sizing, operation, and troubleshooting is a must for designers and operators of refrigeration systems and chiller plants. This course covers the fundamentals of refrigeration systems, starting from vapour compression cycle, types selection and capacity control of main components of refrigeration systems and chiller plants, accessories and level control, sizing and installation of refrigeration piping, refrigerants, oils, safety, systems and components measurements, diagnostics, servicing and troubleshooting. In addition to operation and maintenance of commercial and industrial chiller plants, energy conservation and peak operating efficiency. Topics are introduced for individuals who have little background on the subject, while providing valuable information for personnel having experience with refrigeration systems and chiller plants.
Course outline
- Fundamentals of Refrigeration
- Refrigeration System Main Components – Types, Selection and Capacity Control
- Refrigeration System – Accessories and System Level Control
- Refrigeration System Piping – Sizing and Installation
- Refrigerants, Oils, and Safety
- Refrigeration System and Component Measurements
- Refrigeration System Diagnostics, Servicing and Troubleshooting
- Commercial and Industrial Chillers
- Chiller Operation and Maintenance
- Energy Conservation & Peak Operating Efficiency
What you’ll learn
After attending this course, trainees will be able to:
- Apply key fundamental concepts in the design, sizing and operation of refrigeration systems and chiller plants.
- Perform refrigeration cycle sizing and equipment selection
- Carry out refrigeration piping design and sizing calculations.
- Select procedures for efficient operation of various refrigeration systems
- Apply systematic diagnostics and troubleshooting procedures to identify and resolve sizing and operation problems of refrigeration systems and water chillers.
Who should attend
Design and project engineers, technologists, plant and facility engineers, consultants, mechanical engineers and technologists, maintenance and operation personnel, and other technical personnel who need to upgrade/refresh their current knowledge of HVAC systems.
Group training
This course can be customized and delivered to your group of staff at your facility, saving time and money.
Workforce Development Agreements
The cost of this course could be covered by your province or territory’s Workforce Development Agreement. Your company may be eligible for funding!
10:00 AM EST — Session begins
5:00 PM EST — Adjournment
There will be a one-hour lunch break each day in addition to a number of breaks throughout each day.
Syllabus
DAY 1
Fundamentals of Refrigeration
- Modes of heat transfer
- General gas laws
- Basic Refrigeration System
- Pressure–Enthalpy (P–h) Chart
- The Ideal Vapor Compression Refrigeration Cycle
- The Actual Vapor Compression Refrigeration Cycle
- Sizing Calculations
Workshop I: Sizing a Typical Refrigeration System for an Air Conditioning System
Refrigeration System Main Components – Types, Selection and Capacity Control
- Compressor
- Reciprocating
- Screw
- Helical
- Centrifugal
- Capacity rating
- Capacity control
- Condenser
- Air-cooled condensers
- Evaporative condensers
- Water-cooled condenser
- Cooling towers
- Condenser capacity control
DAY 2
Refrigeration System Main Components – Continued
- Evaporators
- Types and capacity control
- Preventing evaporator freeze-up
- Sensing suction temperature
- Hot gas bypass to the evaporator inlet
- Expansion Valves –types, operation, and superheat setting
Refrigeration System – Accessories and System Level Control
- Accessories
- Solenoid valve
- Liquid-line filter drier
- Sight glass
- Suction line filter
- Hot gas muffler
- Shut off valve
- Access port.
- System-Level Control
- Constant-volume DX system
- VAV DX system
- Chilled-water system
DAY 3
Refrigeration System Piping – Sizing and Installation
- Refrigerant piping design requirements
- General selection and installation guidelines
- Suction line sizing and minimum allowable velocities
- Suction-line accumulator
- Single and double suction risers
- Thermostatic valve installation
- Evaporator single and multiple distributers
- Discharge line sizing and routing
- Liquid line sizing and routing
- Hot-gas bypass line sizing and routing
Workshop II: Sizing the refrigeration piping for a Typical Refrigeration System
Refrigerants, Oils, and Safety
- Numbering system for refrigerants
- Classification of refrigerants
- Required properties of refrigerants
- Refrigerant tables and charts
- Safety precautions used when handling refrigerants
- Lubricants
DAY 4
Refrigeration System and Component Measurements
- Refrigeration system instrumentation and measurements
- The air conditioning refrigeration cycle
- Types of air conditioning cooling systems
- Water to Water
- Air to Air
- Air to Water
- Water to Air
- Pressure measurement
- Temperature measurement
- Humidity measurement
- Airflow measuring instruments
Refrigeration System Diagnostics, Servicing, and Troubleshooting
- Common sources of refrigeration system operating difficulties
- Associated symptoms and possible remedies
- Procedure to determine overall refrigeration system efficiency
- Analyze the pressure enthalpy chart
- Procedure to determine and adjust the degree of superheat
- Procedure to determine and adjust the degree of subcooling
Workshop III: Case study – Measurements, Diagnostics, and Calculation of Refrigeration System Overall Efficiency
DAY 5
Commercial and Industrial Chillers
- Types of chillers
- Vapor Compression Chillers
- Part load capacity
- Absorption Chillers
- Cooling Towers –theory of operation and types
Chiller Operation and Maintenance
- Operating and safety controls
- Maintenance considerations
- Operating log
- Mechanical components
- Heat-transfer surfaces
- Fluid analysis
- Data logging
- Periodic checks
- Regularly scheduled maintenance
- Extended (long term) maintenance checks
- Cooling tower maintenance and water treatment
- Cooling tower performance troubleshooting
Energy Conservation & Peak Operating Efficiency
- Energy conservation system design options
- Free cooling
- Airside economizer
- Waterside economizer
- Refrigerant-migration free cooling cycle
- Ice storage systems
Questions and Answers and Feedback to Participants on Achievement of Learning Outcomes
