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TRG-TRC001-EN 51
period six
Psychrometric Analyses
notes
The psychrometric chart is a visual tool that helps designers find solutions to
many common HVAC problems by plotting conditions on the chart.
Today, many of these same problems can be quickly solved by computers,
which can often eliminate the need for a graphical solution altogether. Still, a
basic understanding of psychrometric principles is required to use these tools,
and is fundamental to the science of air conditioning.
Instead of relying solely on the “typical” coil curves printed on the
psychrometric chart, many manufacturers provide computerized coil selection
programs to determine the actual performance of specific coils. Software tools
are also available to assist you in performing psychrometric calculations, such
as determining the properties of air at a given set of conditions, and finding the
conditions that result when two air streams are mixed.
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Figure 81