The aim of this course is to equip participants with the necessary knowledge to comprehend and improve their mechanical aptitude in the field of Heating, Ventilation, and Air Conditioning (HVAC) maintenance and operation.

Course Objectives:

To provide a practical understanding of the theory dictating the design and control of HVAC systems
To provide information on the energy conservation aspects of HVAC systems
The aim of this program is to provide the participants with a complete and up-to-date overview of the area of Heating, Ventilation and Air-conditioning (HVAC). It commences with a review of psychometric charts and then examines the factors that influence design choices, indoor air quality, load calculations and heating/ventilation and air-conditioning systems. Numerous tips and tricks throughout the program make it very practical and topical to your applications. Upon the successful completion of this program, the participant will be able to:
Understand and apply the psychometric chart
Design for good air quality
Perform basic load calculations
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 efficient energy management using HVAC systems

Who Should Attend?

Design and project engineers and technologists, plant and facility engineers, consultants, mechanical engineers and technologists and operation personnel and other technical personnel who need to upgrade/refresh their current knowledge of HVAC systems.

Plant engineers
Inspection and repair managers, supervisors and engineers
Mechanical engineers and technicians
Design engineers, electrical engineers and technicians, consulting engineers

Course Outlines:

Fundamentals of HVAC:

Refrigeration cycle
Type of systems
Type of Refrigerants
Type of compressors
Type of Fans such as backward fans, forwards fans and centrifugal fans.

Determination of Moist Air Properties and the Use of
Psychometrics Chart

Moist air properties
The psychometric chart
Moist air processes

Calculations of Air Conditioning Cycles (Systems)

Bypassed, return and outdoor air
Capacity of refrigerating plant
Effect of heat gains in ductwork

Determination of Space Conditions – Comfort Zone

Comfort-physiological considerations
Environmental comfort indices
Comfort conditions

Cooling/Heating Load Calculations

Design temperature differences
Quantity of heat to be removed
Conduction heat gains
People load
Loads due to lights and equipment.
Infiltration load
Ventilation load
Radiant and solar heat gains

Design of Air Distribution System (Duct Design)

Total, static and velocity pressures
Changes in pressure in a duct
Loss in static pressure due to friction
Fan laws and fan performance curves
System characteristic curves
Fan selection
Duct design

Operation of HVAC
System Selection and Control

System selection.
Control devices
Types of control systems
Basic control theory

Energy Conservation

Determination of energy conservation opportunities (ECOs) in HVAC Systems
Diagnostics and refining
Implementation and maintenance
Economic considerations.

There will be a one-hour lunch break each day in addition to a
refreshment and networking break during each morning and afternoon
session.
After Participating in this Course, You Will be Able to:

Understand key thermodynamics, fluid mechanics and heat transfer
fundamentals and their practical application in the design and operation of HVAC systems.
Learn systematic procedures for cycle and load calculations.
Gain insight into the determination of opportunities of energy conservation and selection of appropriate types of control for the application of interest.

HVAC

The heat load of a room.
The heat load of a multi-room complex.
The cooling capacity.
The airflow rate.
The fresh air requirements.
The DX systems.
The chilled water systems.
Chilled water flow rates & piping sizing.

HVAC Design
Chilled water pump selection.

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