A classroom is located at TSU, Nashville. On a typical summer day (outside air is at...

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A classroom is located at TSU, Nashville. On a typical summer day (outside air is at 9A F db and 7B F wb) with 3D students in the classroom. The room cooling load is 1.C tons. The classroom is kept at 72 F db and 55% relative humidity. The cooling unit supplied air to the room at 5B F db and 7A% relative humidity. The floor area of the classroom is A90 sq ft. the system. a. Show all the processes on the psychrometric chart and draw a schematic of the system. b. What is the mass flow rate of air into the space/room? c. What is the sensible heat factor for the room. d. In order to comply with ASHRAE STD 62.1-2004, what is the minimum outdoor air required in cfm? e. What is the ratio of the outdoor air to the air supplied to the space? f. What is the DB temperature and relative humidity of the air entering the AC unit? g. When outdoor air is used, what is the cooling capacity of the AC unit in tons? h. What is the air volume flow rate (CFM) entering the AC unit? i. What is the apparatus dew point temperature and bypass factor for the AC unit? j. If the maximum pressure drop is 0.2A in water across the filter, how many M-15 24x24x8 filters must be used? k. If the occupants are men and women, describe their comfort level qualitatively after 2 hrs. A classroom is located at TSU, Nashville. On a typical summer day (outside air is at 9A F db and 7B F wb) with 3D students in the classroom. The room cooling load is 1.C tons. The classroom is kept at 72 F db and 55% relative humidity. The cooling unit supplied air to the room at 5B F db and 7A% relative humidity. The floor area of the classroom is A90 sq ft. the system. a. Show all the processes on the psychrometric chart and draw a schematic of the system. b. What is the mass flow rate of air into the space/room? c. What is the sensible heat factor for the room. d. In order to comply with ASHRAE STD 62.1-2004, what is the minimum outdoor air required in cfm? e. What is the ratio of the outdoor air to the air supplied to the space? f. What is the DB temperature and relative humidity of the air entering the AC unit? g. When outdoor air is used, what is the cooling capacity of the AC unit in tons? h. What is the air volume flow rate (CFM) entering the AC unit? i. What is the apparatus dew point temperature and bypass factor for the AC unit? j. If the maximum pressure drop is 0.2A in water across the filter, how many M-15 24x24x8 filters must be used? k. If the occupants are men and women, describe their comfort level qualitatively after 2 hrs.

Answer rating: 100% (QA)

a The psychrometric chart for this situation would show the following processes 1 The outdoor air 9A F db and 7B F wb would enter the classroom 2 The cooling unit would cool the air down to 5B F db an... View the full answer