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Typical Application Standards
The applications below represent a very small percentage of the needs and uses for dry air; the conditions cited are typical of past uses. Specific needs change, as do technology and manufacturing processes.
Your Bry-Air representative can determine appropriate values for a particular application.
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| Typical Application Standards | |||
| Application | Typical Conditions | Notes | |
| Temp °F | Humidity | ||
| Aerosols | 80 | 2 gr/lb dry air | Use hood over Freon charging nozzle and purge hood with very dry air |
| Brewing and Distilling | - | - | - |
| Hops Storage | 35 | 60% rh | - |
| Fermentation Rms | - | 45% rh | To reduce mold growth on walls |
| Filter Rooms | - | 45% rh | To reduce mold growth on walls |
| Grain Storage | 60 | 40% rh | - |
| Baking | - | - | - |
| Sugar Storage | 80 | 35% rh | - |
| Icing and Glazing | 80 | 35% rh | - |
| Cookie Drying | 65 | 20% rh | - |
| Filled Cookie Setting | 20-30 | - | Dry Air to minimize defrost requirement |
| Potato Chips | 75-80 | 20% rh | - |
| Candy | - | - | - |
| Caramel Cooling | 60 | 40% rh | - |
| Bar Cooling | 0 | 40%-50% rh | - |
| Chocolate | 90 | 13% rh | Care should be exercised in the systems design to |
| Hard Candy Making | 75 | 35% rh | insure against recirculating air-borne sugar |
| Hard Candy Packing | 75 | 35% rh | dust in the system |
| Sugar Storage | 80 | 35% rh | - |
| Concentrates | - | - | - |
| Molasses Grinding | - | Less than 25% rh | Do not recirculate – Pre-cool and dry to 20-25 gr/lb |
| Honey Grinding | - | Less than 25% rh | - |
| Instant Coffee Packing | 80 | 20% rh | - |
| Citrus Crystal Packing | 80 | 15% rh | - |
| Ferrous Cupola Dry Blast | - | 40 gr/lb dry air | - |
| Crystal Growing | - | Varies | Dependent on particular salt |
| Crystal Cutting | - | Varies | Dependent on particular salt |
| Coils-Electronic | - | Lowest possible | Prevent moisture absorption by insulation |
| - | 1-3 gr/lb dry air | - | |
| Coils - TV and X-Ray | 72 | 15% rh | - |
| Transformer Manufacturing | 80 | 5% rh | - |
| and Rebuilding | - | - | - |
| Elec. Appliances | 72 | 15% | In blankets and pads with Nylon sheathing or insulation, moisture causes shorting and change in electrical characteristics and moisture absorbed in sealed sheath heating elements can cause failure and even explosion |
| Lightning Arrestor | - | - | - |
| (Assembly) | 60 | 20% rh | - |
| Typical Application Standards | |||
| Application | Typical Conditions | Notes | |
| Temp °F |
Humidity | ||
| Switch Gear Assembly | 68 | 20-24% rh | - |
| Lamination | 80 | 20% rh max | Paper, cloth or wood, glass fibers, etc. bonded with plastic, shellac, varnish or glue. Store material at 20%rh to insure good bond. Store finished goods at less than 80° F at 20% rh to prevent adhesion. |
| Chinchilla Raising | 32-35 | 18-25% rh | High humidity is a health hazard. Low temperature and humidity provide denser and better pelts. |
| Matches | 70 | 40% rh | For drying |
| Paper Coating | 80 | 20% rh | For paper storage prior to coating with wax, plastic, adhesive, etc. To insure bond (See lamination) (Limit paper to 4% moisture) |
| Paint Spraying and Lacquering |
80 | 50% rh or less | Control spray booth or cabinet to prevent blushing caused by moisture condensing on evaporative cooled surface (evaporation of paint or lacquer solvent) Do not recirculate. |
| Paper & Fiber Molding | 80 | 20% rh | Finished good storage to prevent sticky condition and loss of shape |
| Printing & Binding | 90 | 30% rh | Paper storage to prevent excessive moisture content (4-6% maximum) and resultant high static electric charge. Changes in moisture content between impressions causes poor register. |
| Pharmaceuticals | - | - | - |
| Ampoule Mfg. | 80 | 30% rh | - |
| Penicillin Packaging | 80 | 5-15% rh | Hygroscopic Product |
| Capsule Storage | 75 | 35-40% rh | Gelatin softens and distorts at higher temperature and humidity |
| Colloids | 70 | 35% rh | - |
| Cough Syrups | 80 | 40% rh | - |
| Cough Drops | 70 | 30% rh | Similar to hard candy |
| Effervescent | 90 | 15% rh | Powders or tablets |
| Extracts - | - | - | - |
| Glandular | 70-80 | 5-10% rh | |
| Liver | 70-80 | 5-10% rh | |
| Tablet Coating | 80 | 5-30% rh | |
| Tablet Compressing | 70-80 | 10-30% rh | |
| Powder Storage | 70-80 | 15-30% rh | |
| Powder Mfgr | 70-80 | 15-30% rh | |
| Powder Milling | 80 | 35% rh | |
| Plastics, Nylon, etc. | 80 | 3-15% rh | For drying and storage prior to molding |
| Plastics, Manufacturing Area for Thermo Setting and Moulding Compounds |
80 | 25-30% rh | - |
| TV-Radio Broadcasting | 70 | 20% rh | Tape head life extension |
| Typical Application Standards | |||
| Application | Typical Conditions | Notes | |
| Temp °F |
Humidity | ||
| Plastics, Laminated Built-up areas |
70 | 20% rh | High efficiency filters required to eliminate dust and fumes |
| Parchment storage | 70 | 35% rh | |
| Plywood | 90 | 15-25% rh | Cold pressing |
| Rubber Products | - | - | - |
| Dipped Goods | 75-90 | 25-30% rh | Dew point of air must be below evaporation temperature of solvent |
| Cementing | 80 | 25-30% rh | |
| Tire Cord | 125 | 7% rh | For storage to prevent moisture absorption & resulting loss in adhesion with rubber |
| Glass Laminating | 68-70 | 15-20% rh | To insure good long life bond |
| Explosives | - | - | - |
| Gun Powder, Solid Fuels | 35-75 | 10-50% rh | Range is great dependent on material, but storage is critical - e.g. - solid fuel power is calculated with consideration of time stored at given condition |
| Freezer Tunnel Vestibules | 75 | 10-20% rh | Introduce air as curtain in front of tunnel opening |
| Pipe Galleries | 40-80 | 40-50% rh | Maintain space dew point below piped fluid temperature to eliminate condensation. Maintain temperature to eliminate corrosion. |
| Telephone & Electrical Cable Wrapping |
80 | 5 - 20% rh | Extra high voltage cable wrapping has no lower limit on moisture. Upper limit is about 5% rh. |
| Seed Drying & Storage | 35-80 | 10-25% rh | Low temperature drying and low rh storage preserves germination potential |
| Food Drying Bins | 95-105 | 2 gr/lb dry air | Spices - condiments |
| Transformer (Electric) | 90 | 10-25% rh | - |
| Transistors | 72-75 | 25-40% rh | - |
| Tubes - Radio | - | - | - |
| TV - Lighting | 90 | 15-25% rh | Drying inside coating - There is no minimum moisture level - The dryer the air - the better |
| Missiles | 35 | 35% rh | Purging and cooling |
| 80 | 25% rh | Assembly | |
| Fertilizer Storage | AMB | 40-50 rh | Deliver air, 1-1/2 air changes/hour at 25% rh when corrected to ambient dry bulb. |
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