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Air Conditioning Systems
A.
Bhatia
Overview
Most
people think the air conditioning system's job is just to add "cold” air
to the space. Actually
air-conditioning is a process by which air is cooled and dehumidified by
mechanical means. In a broader sense, air conditioning includes both the cooling
and heating of air, cleaning it and controlling its moisture level, and
conditioning it to provide maximum indoor comfort. Engineers define the process
as one in which a system of mechanical components - usually a compressor, a fan,
condenser coil, evaporator coil and a chemical refrigerant - extract heat from
indoor air and transfers it outside, leaving the cooled indoor air to be
re-circulated. The cleaning function of air conditioners is performed by
filters.
Diverse
geographical and operating conditions require considerably different types of
air conditioning systems. The intended use of the conditioned space is the
primary factor in determining the desired controlled environment and
accomplishing the specific purpose by special equipment arrangement. Comfort
applications in general aim to provide an indoor environment that remains
relatively constant in a range preferred by humans despite changes in external
weather conditions or internal heat loads.
This
4-hour course introduces the basics of air conditioning systems found in
residential and small to medium commercial and industrial facilities. This
course is entirely based on US Navy manual - Utilitiesman Basic, Volume 2:
NAVEDTRA 14279, Chapter 7 - “Air Conditioning”.
The
reader must take a multiple-choice quiz consisting of twenty (20) questions at
the end of this course to obtain PDH credits.
Specific Knowledge or
Skill Attained
This
course teaches the following specific knowledge and skills:
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The
basic principles of temperature, humidity and air motion in relation to air
conditioning
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The
different types of air conditioning systems
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Identifying
the components in an air conditioning and their function
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The
operation and application of heat pumps for residential and commercial air
conditioning
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Chilled
water systems for large tonnage capacity air conditioning
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Different
types of cooling towers, compressors and controls
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The basic types of ductwork systems and the components of those systems for
distribution of conditioned air
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The
basic principles of operation, maintenance and repair of automotive air
conditioners
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A systematic method for trouble shooting and preventative maintenance on air
conditioning system components
Course
Click on the link below to review the
course prior to taking a quiz for credit.
Air
Conditioning Systems (4 MB)
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credit. Click on the link below.
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