10. A winter air conditioning system maintains a building at 210C and 40% RH. The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load on the building is 100 kW, while the latent heating load is 25 kW. In the air conditioning system, 50% of the outdoor air (by mass) is mixed with 50% of the room air. The mixed air is heated in a pre-heater to 250C and then required amount of dry saturated steam at 1 atm. pressure is added to the pre-heated air in a humidifier. The humidified air is then heated to supply temperature of 450C and is then supplied to the room. Find a) The required mass flow rate of supply air, b) Required amount of steam to be added, and c) Required heat input in pre-heater and re-heater. Barometric pressure 1atm..

Elements Of Electromagnetics
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10. A winter air conditioning system maintains a building at 210C and 40% RH.
The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load on
the building is 100 kW, while the latent heating load is 25 kW. In the air
conditioning system, 50% of the outdoor air (by mass) is mixed with 50% of the
room air. The mixed air is heated in a pre-heater to 250C and then required
amount of dry saturated steam at 1 atm. pressure is added to the pre-heated air
in a humidifier. The humidified air is then heated to supply temperature of 450C
and is then supplied to the room. Find a) The required mass flow rate of supply
air, b) Required amount of steam to be added, and c) Required heat input in
pre-heater and re-heater. Barometric pressure = 1atm.
Transcribed Image Text:10. A winter air conditioning system maintains a building at 210C and 40% RH. The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load on the building is 100 kW, while the latent heating load is 25 kW. In the air conditioning system, 50% of the outdoor air (by mass) is mixed with 50% of the room air. The mixed air is heated in a pre-heater to 250C and then required amount of dry saturated steam at 1 atm. pressure is added to the pre-heated air in a humidifier. The humidified air is then heated to supply temperature of 450C and is then supplied to the room. Find a) The required mass flow rate of supply air, b) Required amount of steam to be added, and c) Required heat input in pre-heater and re-heater. Barometric pressure = 1atm.
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