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(3) Using the natural ventilation method requires knowing the volume of the humidified
space and the type of construction. A tightly constructed building will have a least one
air change per hour. A loosely constructed building will have at least one and one half
changes per hour, and this same building with a large a amount of incoming or exiting
traffic will have at least two air changes per hour.
(a)
Formula 3
Assume our print shop has a floor area of 100'
x 100'
with a 20' ceiling with a
large amount of traffic. This requires
100' x 100' x 20' x 2 = 400,000 ft
3
/hr.
Using our example, the moisture required is
400,000 x 5.08
_______________
= 290 lbs/hr
7000 grains/lb
(4) Using make-up air:
(a)
Formula 4
Assume our print shop has a 15,000 CFM HVAC system and uses 10%
make-up air during winter. The amount of outside make-up air entering the
HVAC system will, therefore, be 10% of 15,000 CFM = 1,500 CFM. The
moisture required will be
1,500 x 5.08 x 60 min/hr
_________________________
= 65 lbs/hr
7,000 grains/lb
(Refer to Figure 1.)
Figure 1. Schematic of a Typical Print Shop HVAC System
Summary of Contents for NHPC
Page 1: ...2538144 B NH Series NHTC NHPC ELECTRODE STEAM HUMIDIFIER Engineering Manual TM ...
Page 9: ...10 00 Page 1 2008 10 01 10 00 INTRODUCTION ...
Page 10: ...10 00 Page 2 2008 10 01 Figure 1 NHTC ...
Page 13: ...10 00 Page 5 2008 10 01 Figure 2 Optimum Boiling Time Figure 3 Conductivity ...
Page 18: ...10 00 Page 10 2008 10 01 Figure 6 Typical NHRS Installation Sheet 1 of 2 ...
Page 19: ...10 00 Page 11 2008 10 01 Figure 7 Typical NHRS Installation Sheet 2 of 2 ...
Page 20: ...10 10 Page 12 2008 10 01 10 10 HUMIDITY STEAM ABSORPTION AND DISTRIBUTION ...
Page 35: ...10 10 Page 27 2008 10 01 Figure 2 Psychrometric Chart ...
Page 64: ...10 10 Page 56 2008 10 01 Figure 30 NORTEC OnLine Monitoring ...
Page 71: ...10 20 Page 63 2008 10 01 10 20 SPECIFICATIONS ...
Page 81: ...10 30 Page 73 2008 10 01 10 30 SUBMITTALS ...
Page 86: ...10 30 Page 78 2008 10 01 Figure 2 Primary Line Voltage Wiring to Unit ...
Page 87: ...10 30 Page 79 2008 10 01 Figure 3 Physical Data NHTC NHPC 005 030 ...
Page 88: ...10 30 Page 80 2008 10 01 Figure 4 Physical Data NHTC NHPC 050 100 ...
Page 89: ...10 30 Page 81 2008 10 01 Figure 5 Physical Data NHTC NHPC 150 200 ...
Page 96: ...10 30 Page 88 2008 10 01 Figure 12 In Duct AHU Installation With Mounting Frame Installation ...
Page 98: ...10 30 Page 90 2008 10 01 Figure 13 In Duct AHU Installation With Mounting Frame Installation ...
Page 100: ...10 30 Page 92 2008 10 01 Figure 16 Atmospheric SAM e Adapter Dimensions ...
Page 101: ...10 30 Page 93 2008 10 01 Figure 17 Atmospheric Steam Header and Adapter Configuration ...
Page 102: ...10 30 Page 94 2008 10 01 Figure 18 Physical Data for Remote Mounted Blower Pack ...
Page 103: ...10 30 Page 95 2008 10 01 Figure 19 Physical Data Units with Optional Built On Blower Packs ...
Page 104: ...10 30 Page 96 2008 10 01 Figure 20 Physical Data Units with Optional Built On Blower Packs ...