2023年7月12日 · Determination of wet-bulb temperature on this psychrometric chart follows lines of constant enthalpy, but values are read off the upper, curved, saturation temperature boundary. Specific Volume indicates the space occupied by air.

This Tech Note explains how to use a psychrometric chart to determine quantities of air such as relative humidity, heat content (enthalpy), specific volume, and dew point. At a given temperature, air can hold only a certain amount of water in the vapor form. Saturation is the

Constant dry bulb temperatures appear as vertical lines in the psychrometric chart or horizontal lines in the Mollier diagram. The Wet Bulb temperature is the adiabatic saturation temperature. Wet Bulb temperature can be measured by using a …

Use the psychrometric chart to determine the specific humidity ω [18 gm-moisture/kg-air], the enthalpy h [78 kJ/kg-air], the wet-bulb temperature T wb [25.5°C], the dew-point temperature T dp [23°C], and the specific volume of the dry air v [0.89m …

Wet bulb temperature on psychrometric chart is represented by lines that slant diagonally from the upper right of the chart (along the line of saturation) down to the lower left of the chart. These follows lines of constant enthalpy but values are read off at the upper, curved, saturation temperature boundary. The unit of measure used for

2024年3月26日 · Wet bulb temperature is the temperature of the air at maximum humidity. It is measured by wrapping wet cotton around the bulb of a thermometer. The wet bulb temperature is shown diagonally in the Psychrometric Chart.

Lines of constant humidity ratio are horizontal on the psychrometric chart. Another measure of water vapor content that you may be familiar with is the relative humidity. You will have heard weather reporters using this term. Water vapor is condensable; there is a limit to how much can be present in the air.

WET BULB TEMPERATURE reflects the cooling effect of evaporating water. It can be determined by passing air over a thermometer that has been wrapped with a small amount of moist cloth. The cooling effect of the evaporating water causes a temperature drop. The wet bulb temperature scale is located along the curved upper left portion of the chart.

Answer: Relative humidity can be determined by using a sling psychrometer to measure wet and dry bulb temperatures and a psychrometric chart. A sling psychrometer consists of two mercury thermometers, one of which is equipped with a wick around the mercury bulb. The other is used to measure dry bulb temperature. To use this instrument,

Wet-bulb temperature: Describes the temperature affected by air humidity. To find wet-bulb temperature at dry bulb temperature and a set relative humidity. Move leftwards horizontal until you reach the saturation curve and then evaluate wet-bulb temperature.