Ventilation dryer for diesels tanks of emergency power systems

Mobile and stationary power generators are used wherever there is no public power grid or where the failure of the power grid would have serious consequences. These reliable units supply power to hospitals, chemical plants, server rooms and nuclear power plants, for example, to ensure the removal of decay heat even in the event of a shutdown or failure of the power grid.

Problem: Moisture in the tank

Unfortunately, the reliability of the genset is greatly reduced by condensation in the fuel tank. The consequences are diesel plague, clogged filters, rusted pipes and the emergence, of bacteria and algae.

Cause humidity

Due to the infrequent operation of the genset, diesel fuel or heating oil is usually removed from the tank once a month for one hour. In the process, moist ambient air flows through the vent pipe into the tank.
As the tank wall cools, the moisture in the air condenses and flows into the fuel, settling and promoting the growth of bacteria.

Tank air dryer as a solution

An effective solution is the use of a tank air dryer. This dries the incoming supply air and thus achieves a strong reduction of the water content and the dew point.
Humidity of 5-10% RH in the tank is achieved without additives and conversion work. This corresponds to a dew point of approx. -30°C, with a water content of less than 0.5 g/m³.

Handling and benefit

While a well-designed aeration dryer protects the tank contents very efficiently, handling is simple. The color change of the silica gel from orange to green indicates the condition of the adsorber.
If the entire bed is discolored, only the contents are changed – this ensures favorable operating costs.

The air flows through the desiccant and is dehumidified.

Without gas displacement, the outflowing air is directed into the environment through the 2" check valves at 30 mbar opening pressure.

The additional venting system protects the tank from overpressure during filling from the tank truck.

The use of GIEBEL adsorbers on diesel tanks for gensets is applied among others ...

  • in industry,
  • in banks and insurance companies,
  • in hospitals and hotels,
  • in the military and in government buildings,
  • in public utilities and water and sewage treatment plants,
  • at airports and with fire departments and
    police.