Review Course Section Quiz 05

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SQ 5.1     An air handling unit coil delivers 25,000 cfm of 55°Fdb/54.5°Fwb air. The mixed air entering the air handling unit cooling coil is 85°Fdb/74°Fwb. @ 85°Fdb/74°Fwb: w1 = 109 grains, h1 = 37.5 Btu/lb; @ 55°Fdb/54.5°Fwb: w2 = 62 grains, h2 = 23.2 Btu/lb. Calculate the sensible load on the coil.
SQ 5.2     An air handling unit coil delivers 25,000 cfm of 55°Fdb/54.5°Fwb air. The mixed air entering the air handling unit cooling coil is 85°Fdb/74°Fwb. @ 85°Fdb/74°Fwb: w1 = 109 grains, h1 = 37.5 Btu/lb; @ 55°Fdb/54.5°Fwb: w2 = 62 grains, h2 = 23.2 Btu/lb. Calculate the latent load on the coil.
SQ 5.3     An air handling unit coil delivers 25,000 cfm of 55°Fdb/54.5°Fwb air. The mixed air entering the air handling unit cooling coil is 85°Fdb/74°Fwb. @ 85°Fdb/74°Fwb: w1 = 109 grains, h1 = 37.5 Btu/lb; @ 55°Fdb/54.5°Fwb: w2 = 62 grains, h2 = 23.2 Btu/lb. Calculate the total load on the coil.
SQ 5.4     In a basic vapor-compression refrigeration cycle, what state is the refrigerant leaving the thermostatic expansion valve?
SQ 5.5     The air handling unit coil from question 1 above requires 161 gpm of chilled water. If the open drive centrifugal chiller has a 65 HP compressor, what is the rejected load to the condenser water?

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