What is the dew point temperature determined by on a psychometric chart?

The dew point temperature on a psychrometric chart is determined by the intersection of the dry bulb temperature and relative humidity. The dry bulb temperature represents the actual air temperature, while relative humidity indicates how much moisture is present in the air compared to the maximum amount the air can hold at that temperature.

When you locate the point on the psychrometric chart that corresponds to a specific dry bulb temperature and its associated relative humidity, you can draw a horizontal line across to the saturation curve (100% relative humidity). The point at which this line intersects the saturation curve indicates the dew point temperature. This temperature is critical in various applications, such as determining condensation risk, calculating air conditioning loads, and understanding humidity effects on comfort levels.

Other choices involve different relationships that do not directly correlate to finding the dew point temperature. For example, the wet bulb temperature provides information about humidity and cooling potential but does not directly determine the dew point without the dry bulb temperature and relative humidity. Similarly, the saturation temperature relates to conditions of 100% humidity but does not use the specific intersection of the other variables mentioned.