2. A room with a sensible load of 6 kW is maintained at 24 C and...

 

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2. A room with a sensible load of 6 kW is maintained at 24 C and 50% relative humidity. Outdoor air at 35 C and 27 C WB was mixed with the room return air. The outdoor air which is mixed is 25% by mass of the total flow going to the conditioner. This air is then cooled and dehumidified by a coil and leaves the coil saturated at 10C which is on the condition-line for the room. Air is then mixed with some room return air so that the temperature of the air entering the room is at 16 C. Find the following: (a) the air conditioning processes on the psychrometric chart. (b) ratio of latent to sensible load. (c) air mass flow rate. (d) the percent by mass of room return air mixed with air leaving the cooling coil. [0.3, 0.73 kg/s, 43%] 2. A room with a sensible load of 6 kW is maintained at 24 C and 50% relative humidity. Outdoor air at 35 C and 27 C WB was mixed with the room return air. The outdoor air which is mixed is 25% by mass of the total flow going to the conditioner. This air is then cooled and dehumidified by a coil and leaves the coil saturated at 10C which is on the condition-line for the room. Air is then mixed with some room return air so that the temperature of the air entering the room is at 16 C. Find the following: (a) the air conditioning processes on the psychrometric chart. (b) ratio of latent to sensible load. (c) air mass flow rate. (d) the percent by mass of room return air mixed with air leaving the cooling coil. [0.3, 0.73 kg/s, 43%]