A501 Air Conditioning Basics 3: Air Conditioning Plant - London

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Trainer - Steve Nicholson

To effect the air conditioning process various items of plant are necessary. These comprise: filters to clean the air, cooler coils for cooling and dehumidification, humidifiers, heater batteries, and fans for supplying and extracting the air. In the majority of cases, for multi-room buildings, a system of ductwork is also needed to distribute the air.

The characteristics and suitability of the various types of filters in common use are discussed and the methods adopted to describe their efficiencies explained.

The cooler coil is a vital piece of plant and an understanding of its performance at both design duty and partial load is desirable. The practical and theoretical performance of chilled water coils is considered and a brief mention made of direct expansion coils (directly connected to refrigeration plant).

Some systems of air conditioning need a supply of chilled water throughout the year and methods of providing this, without the use of the refrigeration compressor, are explained.

An introduction to duct sizing is given and some time is spent describing the performance characteristics of fans.

10.00 - 11.10
Session 1
Air duct sizing and pressure drop calculation.

11.10 - 11.35 Coffee

11.35 - 12.45
Session 2
Fan performance. Simplified example of duct sizing and the calculation of fan total pressure.

12.45 - 13.45 Lunch

13.45 - 14 55
Session 3
Air filters (particle collection, efficiency types and classification).

14.55 - 15.20 Coffee

15.20 - 16.30
Session 4
Chilled water cooler coils (construction, heat transfer, partial load performance, free cooling)

LINKS TO RELEVANT COURSES

Follow-on course:
Air Conditioning Basics 4

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