Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 21 03/02/16 10:38 am
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 22 03/02/16 10:38 am
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 23 03/02/16 10:38 am
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 24 03/02/16 10:38 am
Figure P23.15f (continued )
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 26 03/02/16 10:38 am
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 27 03/02/16 10:38 am
MATH PROBLEMS
Part 5: Problems 23.16 Through 23.20
PROBLEM 23.16 The plans require a 200 3 240 duct, but the
attic space is only 160 deep. Properly size the duct to fit within
the attic space and write a request for information (RFI) to in-
form the engineer.
PROBLEM 23.17 The plans require a 480 3 960 with 20
acoustical liner. List the correct duct size to be used on the
shop drawing.
PROBLEM 23.18 The required CFM for a certain room is 800
CFM at a velocity of 600 FPM. If there are four equally sized dif-
fusers, what size square duct would be used? What size round?
PROBLEM 23.19 Convert the following rectangular duct
sizes to round:
120 3 120
240 3 240
300 3 180
480 3 140
1000 3 300
PROBLEM 23.20 Convert the following round duct sizes
to rectangular:
80 5
180 5
600 5
240 5
340 5
Figure P23.15f (continued )
59728_ch23_EOC_ptg01.indd 28 03/02/16 10:38 am
434
Chapter 23
Heating, Ventilating, and Air-Conditioning (HVAC), and Pattern Development
Solutions to End-of-Chapter• Problems
PROBLEM 23.1 Residential HVAC plan
435
PROBLEM 23.2 Residential air-to-air heat exchanger plan
PROBLEM 23.3 Commercial HVAC plan
436
Part 2: Problems 23.4 and 23.5
PROBLEM 23.4 Commercial HVAC plan
437
PROBLEM 23.4 Commercial HVAC plan (Continued)
438
PROBLEM 23.4 Commercial HVAC plan (Continued)
439
PROBLEM 23.5 Commercial HVAC plan.
PROBLEM 23.5 Commercial HVAC plan. (Continued)
441
PROBLEM 23.5 Commercial HVAC plan. (Continued)
442
PROBLEM 23.5 Commercial HVAC plan. (Continued)
443
Part 3: Problems 23.6 Through 23.14
PROBLEM 23.6 Exhaust duct system (in.)
444
PROBLEM 23.6 Exhaust duct system (in.) (Continued)
445
PROBLEM 23.6 Exhaust duct system (in.) (Continued)