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TRG-TRC001-EN 25
period three
Sensible Heat Ratio
notes
When the required amount of sensible and latent heat are not properly
removed from the room, the desired room conditions cannot be maintained.
For example, if too much sensible heat and not enough latent heat are
removed, the room feels cold and damp. On the psychrometric chart, room
conditions move up and to the left.
On the other hand, if too much latent heat but not enough sensible heat is
removed, the room feels warm and dry. On the psychrometric chart, room
conditions move down and to the right.
Therefore, the conditions of the supply air must be controlled accurately to
ensure that both sensible and latent heat are removed in the proper
proportions. There are several combinations of dry-bulb and wet-bulb
temperatures that will produce the desired room conditions. Each of these
combinations requires a different quantity of air.
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Figure 42