dflexHP self-sufficient high-power heating system for tank containers
Our system series dflex, dflexHP & hybrid are heating systems specially designed for self-sufficient (mains-voltage-independent) use. This system series, with its two different operating modes, offers particularly great flexibility. In addition to electrical heating via 380-440V CEE plugs, an economical diesel heating system enables self-sufficient operation. dflex, dflexHP & hybrid are compatible with almost all tank containers on the market – even for retrofitting. Modular in design, each system is an individual and also maintenance-friendly design with many expansion options.
The systems of the autarkic series temper the tank contents indirectly via the outer wall of the container. For this purpose, the circulation pump conveys a heat transfer fluid in a closed circuit through the half-pipes, which are normally used for steam heating. The heat transfer fluid is a food-hygienically safe glycol-water mixture. The electric heater and diesel heater installed in our system are part of the closed circuit, depending on which mode the system is in, the heat transfer fluid is heated either by the electric heater or the diesel heater.
In electric mode, the electric heater integrated in the system heats the heating medium; this mode is used, for example, for stationary loading & unloading. The heating of the heat transfer fluid is carried out according to the principle of a continuous flow heater, in this process the fluid is strictly separated from the customer’s product. The power supply for the system is provided by an industry standard 380-440V CEE plug, this also charges the battery for autarkic needs.
In diesel mode, the diesel heater integrated in the system heats the heating medium; this mode is used for intermodal transport when no external power supply is available. The heating of the heat transfer fluid is carried out according to the principle of a continuous flow heater, in this process the fluid is strictly separated from the customer’s product. A battery supplies the electronics of control and temperature regulation independently of the mains supply. It is always being charged during mains operation.
With dflex/dflexHP, the battery can be connected to the vehicle’s electrical system for trickle charging during truck transport, under the condition that the truck can deliver sufficient power, so the system’s runtime is limited only by the diesel tank.
With the hybrid system, a diesel generator – fully integrated exclusively for this purpose – automatically charges the battery as soon as its capacity falls below 15%. This means that the system’s running time is only limited by the diesel tank.
For both modes, heating is fully automatic. The flow temperature at which the heat transfer medium flows into the container’s pipe circuit can be set with high precision. This means that even very temperature-sensitive products are protected from quality losses due to too high contact temperatures.
dflexHP is one of the two high power systems in the system range. In addition to the standard features, the system has a more powerful burner and can temporarily activate the Boost mode, a dual operation of electric & diesel heating. Thanks to the higher power, the flow temperature is reached very quickly. dflexHP comes with better basic equipment than dflex. So basically it has a bigger and more modern battery system, the new microflexPLC control system, advanced telematics, control and safety functions and much more. By adding battery capacity and an optional range extender, which is a small generator that can be integrated into the container, dflexHP can perform exactly the same function as the hybrid system. This extension is only worth it if the customer has already purchased several dflexHP and then needs the longer self-sufficient runtime. dflexHP is a system that has a longer self-sufficient battery runtime because it is able to use up to 690Ah battery capacity. dflexHP is often used in MDI and MMDI transport, for example. Just like hybrid, it offers a number of additional features beyond the basic equipment.