What method is used to find specific enthalpy on a psychometric chart?

Finding the specific enthalpy on a psychometric chart involves determining the intersection of the dry bulb temperature and relative humidity. The psychometric chart is a graphical representation of the physical and thermal properties of moist air, showing various parameters including temperature, humidity, and enthalpy.

In the context of the chart, the dry bulb temperature represents the air temperature measured by a regular thermometer, while relative humidity expresses the amount of moisture in the air compared to the maximum amount the air can hold at that temperature. By locating the point on the chart where these two parameters intersect, one can directly read off the specific enthalpy of the air mixture. This approach provides an efficient means to analyze the energy content of humid air, which is crucial for various applications in air conditioning and process engineering.

Other methods, such as locating the dew point or calculating heat capacities, do not directly yield the specific enthalpy in the context of a psychometric analysis; therefore, they are not the correct methods for this purpose.