Podcast
Questions and Answers
What do psychrometric properties define?
What do psychrometric properties define?
- Properties of moist air (correct)
- Properties of the atmosphere
- Properties of water vapor
- Properties of dry air
How many properties are required to completely define the thermodynamic state of a mixture of two substances?
How many properties are required to completely define the thermodynamic state of a mixture of two substances?
- Two
- Three (correct)
- Four
- Five
What is considered as the dry bulb temperature in the context of psychrometry?
What is considered as the dry bulb temperature in the context of psychrometry?
- Actual temperature of moist air (correct)
- Temperature of water vapor
- Temperature of only dry air
- Temperature at which water vapor condenses
Why are all calculations in air-conditioning practice based on the dry air part?
Why are all calculations in air-conditioning practice based on the dry air part?
According to the Gibbs-Dalton laws, what can be applied to a mixture of moist air?
According to the Gibbs-Dalton laws, what can be applied to a mixture of moist air?
What is the total pressure equal to in the context of psychrometry?
What is the total pressure equal to in the context of psychrometry?
What is the empirical expression for the enthalpy of the water vapor part?
What is the empirical expression for the enthalpy of the water vapor part?
What is the wet bulb temperature (WBT) a measure of?
What is the wet bulb temperature (WBT) a measure of?
What does the process of adiabatic saturation of air involve?
What does the process of adiabatic saturation of air involve?
What is the specific heat of liquid water used in determining the enthalpy of water vapour?
What is the specific heat of liquid water used in determining the enthalpy of water vapour?
Which temperature is known as the thermodynamic wet bulb temperature or adiabatic saturation temperature?
Which temperature is known as the thermodynamic wet bulb temperature or adiabatic saturation temperature?
When steady conditions are reached during adiabatic saturation, what happens to the unsaturated air?
When steady conditions are reached during adiabatic saturation, what happens to the unsaturated air?
What does wet bulb depression (WBD) measure?
What does wet bulb depression (WBD) measure?
What is meant by the term 'enthalpy' in thermodynamics?
What is meant by the term 'enthalpy' in thermodynamics?
$C_{pw}$ and $C_{pv}$ in the enthalpy expression refer to the specific heats of what substances respectively?
$C_{pw}$ and $C_{pv}$ in the enthalpy expression refer to the specific heats of what substances respectively?
$h_{fg}$ in the enthalpy expression stands for what quantity?
$h_{fg}$ in the enthalpy expression stands for what quantity?
What is the term 'sigma heat' known for in the context of the adiabatic process?
What is the term 'sigma heat' known for in the context of the adiabatic process?
Which values are plotted on the ordinate and abscissa of a common psychrometric chart?
Which values are plotted on the ordinate and abscissa of a common psychrometric chart?
What is defined as the ratio of the mole fraction of water vapor in moist air to that in saturated air at the same temperature and pressure?
What is defined as the ratio of the mole fraction of water vapor in moist air to that in saturated air at the same temperature and pressure?
Where are the relative humidity lines typically drawn on a psychrometric chart?
Where are the relative humidity lines typically drawn on a psychrometric chart?
What defines the values of constant specific volume lines on a psychrometric chart?
What defines the values of constant specific volume lines on a psychrometric chart?
What is represented by any point on the saturation curve in terms of dry bulb and wet bulb temperatures?
What is represented by any point on the saturation curve in terms of dry bulb and wet bulb temperatures?
Which parameter remains constant during the adiabatic process according to the provided text?
Which parameter remains constant during the adiabatic process according to the provided text?
What is plotted on the ordinate of a psychrometric chart according to common practice?
What is plotted on the ordinate of a psychrometric chart according to common practice?
What does relative humidity on a psychrometric chart represent according to the content provided?
What does relative humidity on a psychrometric chart represent according to the content provided?
Where are relative humidity lines typically found on a psychrometric chart?
Where are relative humidity lines typically found on a psychrometric chart?
What is the definition of specific humidity or humidity ratio?
What is the definition of specific humidity or humidity ratio?
What is the dew point temperature (DPT)?
What is the dew point temperature (DPT)?
What does the degree of saturation represent?
What does the degree of saturation represent?
How is relative humidity defined?
How is relative humidity defined?
What is the enthalpy of moist air according to Gibbs's law?
What is the enthalpy of moist air according to Gibbs's law?
How is specific humidity related to saturated air?
How is specific humidity related to saturated air?
What happens if more water vapor is added to saturated air at a constant temperature?
What happens if more water vapor is added to saturated air at a constant temperature?
