4. Outdoor air at 1 atm is at 40C and 50% relative humidity. Indoor air is...

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4. Outdoor air at 1 atm is at 40C and 50% relative humidity. Indoor air is to be kept at 22C and 40% relative humidity. Determine the following: a) Fill out the table below for the outdoor and indoor air thermodynamic properties. b) Clearly state the name and order of the processes required to move from the outdoor air properties to indoor air. c) Plot all thermodynamic processes required on the attached psychrometric chart. d) For a mass flow rate of 10 kgdry air per second, calculate the total heat transfers and water mass flow rates into and out of the air (Extra Credit) If the cooling and dehumidification process is accomplished through the use of a vapor compression chiller system, and there is an absolute difference of 5C between the air leaving the chiller and evaporator, and an absolute difference of 5C between the 40C outside air and condenser, what are the temperatures at which the evaporator and condenser are operating? BOX ALL ANSWERS Property Wet Bulb Temperature (C) Dew Point (C) Specific Enthalpy (kJ/kgdry air) Absolute humidity (gH20/kgdry air) Specific volume (m/kgdry air) Outdoor Air Indoor Air Enthalpy of Saturated Liquid Water Temperature (C) H (kJ/kg) 0.01 0.001 5 21.020 10 42.022 15 62.982 20 83.915 25 104.83 30 125.74 35 146.64 40 167.53 45 188.44 4. Outdoor air at 1 atm is at 40C and 50% relative humidity. Indoor air is to be kept at 22C and 40% relative humidity. Determine the following: a) Fill out the table below for the outdoor and indoor air thermodynamic properties. b) Clearly state the name and order of the processes required to move from the outdoor air properties to indoor air. c) Plot all thermodynamic processes required on the attached psychrometric chart. d) For a mass flow rate of 10 kgdry air per second, calculate the total heat transfers and water mass flow rates into and out of the air (Extra Credit) If the cooling and dehumidification process is accomplished through the use of a vapor compression chiller system, and there is an absolute difference of 5C between the air leaving the chiller and evaporator, and an absolute difference of 5C between the 40C outside air and condenser, what are the temperatures at which the evaporator and condenser are operating? BOX ALL ANSWERS Property Wet Bulb Temperature (C) Dew Point (C) Specific Enthalpy (kJ/kgdry air) Absolute humidity (gH20/kgdry air) Specific volume (m/kgdry air) Outdoor Air Indoor Air Enthalpy of Saturated Liquid Water Temperature (C) H (kJ/kg) 0.01 0.001 5 21.020 10 42.022 15 62.982 20 83.915 25 104.83 30 125.74 35 146.64 40 167.53 45 188.44