Part NO:
200.02.003.fl111
High Inlet Temperature Refrigerated Industrial Dryers
High Inlet Temperature Refrigerated Industrial Dryers, Standard refrigerated dryers are designed to operate at inlet temperatures typically up to 120°F (49°C) maximum. Failing to size the dryer properly to account for higher inlet temperatures will result in dryer failure. Airtek offers both the Smart Cycle and Elite units in the High Inlet Temperature Refrigerated Industrial Dryers Series, capable of handling inlet temperatures as high as 180°F (82°C). Using extended heat exchanger surface area, and an expanded condensing system, the High Inlet Temperature Refrigerated Dryer delivers consistent dew points in extreme temperature environments. The High Inlet Temperature Refrigerated Industrial Dryers design is durable, compact, and incorporates the respective design advantages of the Smart Cycle or Elite Series units.
SEE ALSO BIOLOGICAL AQUARIUM FILTRATION
Biological filtration deals with the removal of nitrogen breakdown by-products from the water. These nitrogen compounds
appear in the tank as a result of the animals added to the tank; the food that is added to the tank, the algae that die off,
and the respiration and metabolism of the fish and invertebrates. Even though the water quality is usually excellent when an
aquarium is first started up, as soon as animals are added the water quality starts deteriorating quickly. Biological
filtration counteracts these negative effects and removes whatever noxious compounds may have been added to the water as a
result of populating the tank, feeding the animals, biochemical activity taking place, etc.
Biological filtration has four goals:
1. removal of nitrogen breakdown products, such as ammonia and ammonium
2. conversion of ammonia to nitrite
3. conversion of nitrite to nitrate
4. removal of some of the nitrate from the system
Bacteria is used to eliminate ammonia and nitrite. Ammonia present in the water is broken down to nitrite by a form of
bacteria called Nitrosomonas. These bacteria appear spontaneously, or their proliferation can be sped up by the addition of a
batch of seeded gravel or rock from another tank. Seeded gravel is gravel, or rock, that comes from an aquarium that has been
running for a while, and already has a great deal of bacterial life. Transferring some of the gravel (rock, coral pieces)
also transfers bacteria. Ammonia tests should always show zero mg/l, or ppm. Even small amounts are unacceptable in reef
systems, as they will definitely harm fish and invertebrates alike.
Nitrite must also be removed. Nitrobacter species appears spontaneously in tanks and convert the nitrite to nitrate, a
compound that is less damaging. Should tests of the aquarium water show the presence of merely low amounts of nitrite, such
still is an indication that somewhere in the aquarium, or in the filters, the natural breakdown cycle has been, or is being,
interfered with. The hobbyist should immediately determine where this interference is coming from and remedy the situation.
This may entail cleaning all mechanical filters, ensuring that the gravel or substrate is clean and does not harbor trapped
detritus and other organic matter, removing dead or dying algae, checking the cleanliness of corner overflow boxes and/or
surface skimming siphons, etc. The presence of nitrite may also suggest that you are feeding too much or the tank is
overloaded to such a degree that the filters can no longer deal efficiently with that biological load. This should prompt the
the removal of lifeforms, or the increase of the filter capacity by adding additional biological filtration.
