Wet Bulb Temperature

The wet-bulb scale is found along the curved side of the chart with the lines leading down and to the right. Locate the wet-bulb temperature, and then follow the line down and to the right into the chart until it meets the line of another known property of the air, for example, the vertical dry-bulb temperature line, Figure 23.1. If the temperatures of 72°Fdb and 56°Fwb are known, then the state point is located at the junction of these two lines, the "♦" shown in Figure 23.1. Note: the wet-bulb lines are very close to the heat lines. It is easy to confuse the two.

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