In order to decrease the carbon footprint the general use of renewable fuels is on the increase. To get a quick effect it is important that the fuel can be used in existing vehicles and for this reason the blending of renewable fuels with mineral oil products has increased.
Biodiesel is a vegetable oil- or animal fat-based diesel fuel that is often used blended with petrodiesel. Biodiesel is, like ethanol, hygroscopic which can cause problems since water accelerates the growth of microbe colonies which can clog up filters.
Keep water out
One of the main challenges when it comes to storing biodiesel is to keep water out of the tank. There are a number of openings that have to be taken into consideration. The dip tube is one of these which can be dealt with using our Outlock.
Another potential source of water is the ventilation pipe. Every time product is dispensed from the tank, air is sucked in via the ventilation pipe. During periods of high humidity this also means that water is introduced into the tank and since biodiesel is hygroscopic there is a risk that the water will mix with diesel. This will accelerate bacterial growth that can result in expensive consequences.
With Torkel™ the tank will be naturally closed. This will stop the normal “passive” exchange of air due to temperature changes. This air with water content may otherwise condense on the inside of the ventilation pipes and tank, collecting and trickling down into the diesel.
By leading air that is sucked into the tank during normal refueling at the dispenser through a filter, Torkel™ will effectively dry the air that must be allowed into the tank. When the tank is being filled up the air pushed out will also help take moisture from the filter thereby prolonging its’ lifespan.
Another important function of Torkel™ is to reduce the amount of particles that are drawn into the tank during normal “breathing”. Anything larger than 3μm will be stopped. This gives cleaner fuel which in its turn extends the lifespan of the engines running on the fuel. It also means cleaner tanks decreasing the need for maintenance.