Articles Posted in the " Psychrometry " Category

  • Psychrometric chart

    Psychrometric chart

    Psychrometric chart  This chart contain moist air properties. Construction Refer Fig. is a Psychrometric chart. Dry bulb temperature is the abscissa (along x-axis) and specific humidity is the ordinate (along y-axis) at 1 atmospheric pressure. It contains the following lines:Vertical lines for dry bulb temperature Horizontal lines for specific humidity and for dew point temperature. […]


  • Psychrometry

    Psychrometry

    Psychrometry Definition Psychrometry is the study of the properties of moist air (dry air + water vapor). It includes the study of various temperatures, humidities and psychrometric processes. Dry Air It is a mixture of gases (mainly oxygen and nitrogen) which does not contain water vapor. Wet air Wet air or moist air is a […]


  • * Short Interview Questions only on refrigeration

    * Short Interview Questions only on refrigeration

    Short Interview Questions only on refrigeration  Psychrometry What is Psychrometry? What are psychrometric properties? List these properties. What is a dry bulb temperature? What is a wet bulb temperature? What is a wet bulb depression? What is a dew point temperature? What is a dew point depression? What is a enthalpy of a moist air? […]


  • Interview Short  Questions-Psychrometry and air conditioning

    Interview Short Questions-Psychrometry and air conditioning

    Interview Short Questions-Psychrometry and air conditioning What is a specific humidity? What is an adiabatic saturation? What happens to relative humidity if the dry bulb temperature increases? What is heating and humidification? What is cooling and dehumidification? What is heating and dehumidification? What is cooling and humidification? What is chemical dehumidification? What is adiabatic saturation? […]


  • Interview Short Question Answers on Psychrometry-1

    Interview Short Question Answers on Psychrometry-1

    Interview Short Question Answers on Psychrometry-1 Q. Define dry bulb temperature, wet bulb temperature and dew point            temperature. Dry bulb temperature, tdb, It is temperature of a space measured by an ordinary thermometer. It is represented by a vertical line on the Psychrometric chart. Wet Bulb Temperature, twb, It is temperature read from the stem of a […]


  • Interview Short Question Answers on Psychrometry-2

    Interview Short Question Answers on Psychrometry-2

    Interview Short Question Answers on Psychrometry-2 Q. Explain the physical significance of By Pass Factor for a heating coil. Heating coils: air is not heated to  coil temperature as some air do not come in physical contact with the coil and is said to be by passed. If t1 is temperature of air entering the heating […]


  • Interview Short Question Answers- psychrometric chart

    Interview Short Question Answers- psychrometric chart

     Interview Short Question Answers – psychrometric chart   Define a psychrometric chart and explain its utility.  Psychrometric Chart: It is a chart to study the psychrometric properties of moist air.   Dry bulb temperature is read on X-axis. Wet bulb temperature is read on X-axis Dew point temperature is read on X-axis. Specific humidity is along […]


  • Interview Short Question Answers on Psychrometry-3

    Interview Short Question Answers on Psychrometry-3

        Interview Short Question Answers on Psychrometry-3   Define SHF, By pass factor(BPF), Contact factor and apparatus Dew point. SHF=(SHL/(SHL+LHL)) BPF for a cooling coil =temperature drop not achieved/max temperature drop achievable = (t2—t3)/(t1—t3) Where  t1 is temperature of hot air entering the cooling coil t2 is the temperature of air after the cooling coil […]