CDGA

A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool air or equipment as required. As a necessary byproduct, refrigeration creates waste heat that must be exhausted to ambient or, for greater efficiency, recovered for heating purposes. Concerns in design and selection of chillers include performance, efficiency, maintenance and product life cycle environmental impact. A chiller can be generally classified as a refrigeration system that uses either a vapor compression or absorption cycle to cool. Both the absorption and the mechanical compression systems have the evaporation and condensation of a refrigerant in common. In both systems, the refrigerant evaporates at low pressure to absorb heat and then condenses at higher pressure to reject heat to the atmosphere. Both systems require energy to raise the temperature of the refrigerant for the heat rejection process. Heating, ventilation, and air conditioning – HVAC – chillers are industrial and commercial grade refrigerating systems used in cooling applications (i.e. buildings, raw materials, chemicals, medical equipment and industrial equipment). The system includes a compressor, evaporator, condenser, reservoir, and thermal expansion valve and stabilization assembly. HVAC chillers use water, oils and other liquid compounds as refrigerants. This course is an overview of heating, ventilation and air conditioning (HVAC), including basic design, equipment characteristics, venting, the refrigeration cycle, system control, basic heat transfer, basic airflow principles, air quality, product quality and comfort principles.

The Training Course Will Highlight ?

This course will cover chiller control equipment and devices that control HVAC commercial equipment, pneumatics and Direct Digital Controls. You will find out the answers for:

How the mechanical compression cycle operates
What are the different types of mechanical compressors?
What is vapor absorption refrigeration cycle, its components and applications?
What do the terms efficiency and coefficient of performance mean
What are the functions of the different components of a chiller system?
How is heat rejection achieved through contact and non-contact type cooling towers?
What are the different types of refrigerants and their effects on environment?
What are the principle guidelines in sizing, costing and selecting an appropriate chiller?
Why is water treatment important in closed and open systems?
What are the basic methods and procedures for testing, adjusting and balancing (TAB) of chiller systems

Training Objective

By the end of this course delegates will be able to:

Start, operate and stop machine according to factory-prescribed instructions and procedures
Interpret data and compare machine performance to design specs
Identify proper maintenance schedules according to factory recommendations and communicate maintenance requirement
Know about the fundamentals and concepts of HVAC system
Learn about how central air-conditioning system works
Learn about chiller plant design and control.
Learn what parameters are controlled
Identify HVAC control strategies
Understand the Where HVAC controls required are
Learn benefits of a control system
Learn elements of a control system
Learn temperature, pressure, flow rate and relative humidity sensors types
HVAC plant control takes place through control valves regulating steam or hot/chilled water
Learn about controller’s types and system tuning
Understand the benefits of using DDC HVAC control systems

Target Audience