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TRG-TRC001-EN 53
period seven
Review
notes
In Period Two, a method was discussed to determine the resulting properties of
an air mixture. By plotting the conditions of the outdoor air and recirculated
air, and using the percentage of outdoor air, the resulting condition of the air
mixture was calculated and plotted on a straight line from A to B connecting
the two air conditions.
In Period Three, the ratio of sensible heat gain to total heat gain was
discussed. With the aid of the sensible heat ratio scale on the chart, an SHR line
was drawn. It was also shown that any combination of air conditions that fall on
this line will maintain the desired room conditions A. Each set of conditions
requires a different supply airflow.
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