At the end of this seminar participants will:

• Maintain and troubleshoot HVAC systems
• Understand and apply the psychometric chart
• Design for good air quality
• Perform basic load calculations
• Initiate an effective inspection and maintenance program
• Minimize forced outages and prevent serious damage to HVAC equipment
• Provide an overview of the legislative requirements plus the essential steps and responsibilities for the maintenance and repair of HVAC systems
• Outline the technologies available for the efficient energy management using HVAC systems

Consulting Engineers, Design Engineers, Supervisors, Foremen, Electrical Engineers and Technicians, Maintenance Engineers, Technicians and Staff, Mechanical Engineers and Technicians, Operation, Inspection and repair Managers, Supervisors and Engineers, Plant Engineers, Pharmaceutical and food industry Technical Personnel, Building Operators,Commercial Loaders, Custom Sheet Metal Workers, Electrical Utility Workers, Furnace/Air Conditioner Installers, Gas Fitters, HVAC Apprentices, Installers, Refrigeration Mechanic Apprentices, Sales Associates

 Introduction to HVAC

• General
• Principles of thermodynamics
• Laws of thermodynamics
• Fundamentals of heat transfer
• Fundamentals of fluid flow
• Temperature and its measurement
• Pressure and temperature relationship

 Psychometric

• Introduction to psychometric
• The properties of air
• Psychometric charts
• Air conditioning and psychometric systems
• Psychometric charts as a tool for analysis for A/C performance

Requirements of Comfort Air Conditioning

• Thermodynamics of the human body
• Air purification methods
• Role of clothing
• Temperature and humidity in high heat load
• Inside and outdoor design criteria
• Ventilation and ventilation standards
• Design of ventilation systems
• Air distribution systems
• Air diffusion and performance
• Air purification methods

 Heating and Cooling Load Calculation Procedure

• Design considerations
• Load components
• Design criteria – indoor and outdoor
• Heat/load components
• Miscellaneous heat sources
• Fresh air loads
• Design of air-conditioning systems
• Heat gains: transmission, solar, infiltration

HVAC Systems

• All air, all water, air water systems
• Heat systems
• Steam heating systems
• Electric heat systems
• Components of the air conditioning systems in practice

• Constant Volume Systems

• System concepts
• Different configurations

 Variable Air Volume Systems

• System concepts
• Different Variable Air Volume (VAV) systems

Duct Design, Airflow and its Distribution

• Pressure gradient diagrams
• Duct sizing and design

Insulation of Air-Conditioning Systems

• Properties of insulating materials
• Factors affecting thermal conductivity
• Heat transfer through insulation
• Economical thickness of insulation
• Insulated systems
• Importance of relative humidity for the selection of insulation

Air-Conditioning Equipment

• Packaged units
• Split systems
• Chillers
• Boilers
• Pumps
• Cooling towers
• Adiabatic coolers
• Capacity assessment and selection
• Air filters
• Humidifiers
• Dehumidifiers
• Fans and blowers
• Grills and registers

Refrigeration

• Methods of refrigeration
• Air refrigeration systems
• Vapor compression and absorption refrigeration systems
• Refrigerants
• Refrigeration equipment

Controls and Instrumentation

• Definitions
• Sensors and elements
• Pneumatic and hydraulic controls
• Electrical and electronic controls
• Two position control
• PID control
• Parameters to be controlled (temperature supply and return air)

Typical Control Systems

• Preheat and humidification control (winter air-conditioning)
• Cooling, dehumidification and reheat control (summer air-conditioning)
• Face and by-pass control
• All year round air-conditioning system
• Zone control system

Installation, Commissioning Operation, Testing and Maintenance

• HVAC equipment
• Duct work and air outlets
• Electrical and controls
• Insulation and commissioning process

CDGA attendance certificate will be issued to all attendees completing minimum of 80% of the total course duration.