Herrmidifier Load Calculator User Manual
Page 10
L o a d C a l c u l a t i o n G u i d e
L o a d C a l c u l a t i o n G u i d e
10
w w w. h e r r m i d i f i e r- h v a c . c o m
Leather Processing And Humidification
Proper levels of controlled humidity (40%-60% R.H.) will
keep leather soft and pliable, helping it to resist cracking
when handled and worked. Leather should be stored in a
humidity controlled environment before working it to ensure
that it is soft, pliable and at the proper regain. Different tan-
ning processes will require different levels of R.H. (See Table
1 -D.)
A Humidification Synopsis
There is not a single industry that cannot use humidification
in some are of production, either for material or personnel
benefit.
Offices, hospitals, nursing homes, libraries, museums, fur-
niture stores, bowling alleys, etc., all contain hygroscopic
materials (wood, carpets, etc.) which can be damaged by
dry air. Proper humification protects these materials and also
safeguard the comfort of personnel in these areas.
For an overview of some industries and their humidity re-
quirements see Table I -D following. If your particular indus-
try is not listed, contact Herrmidifier Co., Inc. and we will
supply you with a humidification fact sheet for your industry
telling you why proper humidification is needed and how it
can be accomplished.
Industry
°F
% RH
Industry
°F
% RH
Baking
Hospitals:
Cake mixing
70-75
65%
Nurseries
75
50-65%
Crackers & biscuits
60-65
50%
Operating room
75
55%
Fermenting
75-80
70-75%
Patients’ rooms
75
40-50%
Flour storage
65-80
50-65%
Laboratories
As required
Loaf cooling
70
60-70%
Leather
Make-up room
75-80
65-70%
Chrome tanned (dying)
120
45%
Mixer-bread dough
75-80
65-70%
Vegetable tanned (drying)
70
75%
Proof box
90-95
80-90%
Storage
50-60
40-60%
Yeast storage
32-45
60-75%
Libraries & Museums
70-80
40-50%
Bowling Centers
70
35-45%
Paint Application:
Cereal: packaging
75-80
45-50%
Air drying lacquers
70-90
60%
Confectionary:
Air drying oil paint
60-90
60%
Chocolate covering
62-65
50-65%
Paper Products:
Centers for coating
80-85
40-50%
Binding
70
50-65%
Hard candy
70-80
30-50%
Printing & Folding
75-80
45-55%
Storage
60-68
50-65%
Storage
75-80
40-60%
Cork Processing
80
45%
Schools
72
35-50%
Computers:
Textiles:
Data Processing
70-75
45-55%
Cotton – carding
75-80
50-55%
Computer Mfg & Assembly
70-75
45-55%
Cotton – spinning
60-80
50-70%
Electrical:
Cotton – weaving
68-75
85%
Mfg. Cotton covered wire
60-80
60-70%
Rayon – spinning
80
50-60%
Storage – general
60-80
35-50%
Rayon – throwing
70
85%
Food:
Silk Processing
75-80
65-70%
Apple storage
30-32
75-85%
Woolens – carding
80-85
65-70%
Banana – ripening
68
90-95%
Woolens – spinning
80-85
50-60%
Banana – storage
60
85-90%
Woolens – weaving
80-85
60%
Citrus fruit – storage
60
85%
Tobacco:
Egg storage
35-55
75-80%
Cigar & cigarette
70-75
55-65%
Grain storage
60
30-45%
Other processing & storage
75
70-75%
Meat – beef aging
40
80%
Casing room
90
88-95%
Mushroom – storage
32-35
80-85%
Woodworking:
Potato storage
40-60
85-90%
Finished products
65-70
35-40%
Tomato –storage
34
85%
Gluing
70-75
40-50%
Tomato – ripening
70
85%
Manufacture
65-75
35-40%
Greenhouses
80
70-80%
Painting – lacquer (static control)
70-90
60%
Table 1D
RECOMMENDED HUMIDITIES AND TEMPERATURES FOR VARIOUS INDUSTRIES