HVAC Psychrometric Chart Quiz

Dry-bulb temperature = Temperature of air indicated on the chart Relative humidity = Ratio of the amount of water vapor present in the air to the maximum amount of water vapor that the air can hold at that temperature Dew point temperature = Temperature at which air becomes saturated with water vapor and starts to condense into liquid Specific volume = Volume of a unit mass of dry air Enthalpy = Total energy content of a unit mass of dry air per unit mass of dry air

Dry-bulb temperature line = Diagonal line sloping upwards from left to right Wet-bulb temperature line = Curved line starting from the bottom left corner and bending upwards Dew point temperature line = Horizontal line extending across the chart Specific humidity line = Vertical line rising from the bottom of the chart

Sensible heat ratio = Ratio of sensible heat to total heat in a system Humidification process = Adding moisture to the air without changing its dry-bulb temperature Saturated air = Air that contains the maximum amount of water vapor it can hold at a given temperature and pressure Adiabatic saturation process = Process where air is brought into contact with water without any heat exchange with surroundings

<p>Psychrometric process = Any change in the state of moist air represented on the chart Mixing process = Combining two streams of air with different properties to achieve desired conditions Cooling process = Lowering the temperature of air by removing sensible or latent heat Heating process = Increasing the temperature of air by adding sensible heat</p> Signup and view all the answers

<p>Calculating relative humidity = Determining how close the air is to being fully saturated with water vapor Finding enthalpy difference = Quantifying the change in energy content during a process Estimating dew point temperature = Identifying when condensation may occur based on current conditions Determining specific volume = Understanding the space occupied by a unit mass of dry air under given conditions</p> Signup and view all the answers