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| News Letter |
| WHY AMMONIA NH3 |
Thermodynamics : Evaporating one pound of liquid ammonia absorbs about 550 btu's compare to 40 to 80 btu's / pound for the freons. Cost And Availability : Ammonia is economical ! compared to other refrigerants. The price depends on the source and the quantity purchased, but typically, $0.20 t0 $0.40 per pound for refrigeration. Heat Transfer : Because of the low viscosity and surface tension, ammonia has better heat transfer co-efficient than the commonly used competitive refrigerants. |
| Self Alarming : |
| The average person can identify ammonia at about 4 ppm, will look for breathing support at about 30 ppm. No one will willingly stay in an ammonia atmosphere in concentrations that are hazardous to ones health. Teaks are fixed promptly because of the noxious and irritating door. |
| Oil Recovery : |
| Ammonia liquid and compressor lubricating oil are not miscible and the oil being heavier than the ammonia sinks to the bottom. This makes oil recover problem simple and easily solved. |
| Fluid Dynamics : |
| With equal pressure drops, ammonia requires smaller liquid, suction and hot gas lines. |
| Toxicity : |
| The dictionary defines toxic as "poisonous", and poison as "any substance that injures the healthy or destroy life when absorbed into the system esp. of a higher animal". By this definition of toxic or another, ammonia is not toxic. Refrigerants, such as most of the ferons, carbon dioxide, hydrocarbons and ammonia vapor can and has killed, but by oxygen exclusion, not poisoning. |
| Flammability : |
| Ammonia is not classified as flammable gas. Supposed ammonia is flammable between 160,000 ppm and 250,000 ppm in air, a mixture that would be very hard to achieve. |
| Energy : |
| Ammonia uses less energy per ton of refrigeration that any of the other commonly available refrigerants. |
| Biodegradable : |
| Anhydrous ammonia (R-717) is also 81% available nitrogen fertilizer that is used for side dressing crops such as corn and is used dissolved in water to irrigate other crops. Ammonia vapor in air is absorbed by moisture in the air and falls to earth as a fertilizer in the next rain, snow or dew. Ammonia does not cause any environmental problems such as the Greenhouse Effect, deplete the protective Ozone Layer, etc.
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| SUMMARY: |
| Ammonia is the least expensive, most effective, safest, requires smaller pipes, lower mass flow, biodegradable and has better heat transfer than any other available refrigerants. All refrigerants are dangerous. Treat refrigerants with caution and respect.
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