dflex self-sufficient basic 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.
dflex is the standard version of the system series and is therefore the simplest self-sufficient system. It has all the standard functions of the system range and forms the basic equipment for all the three systems. Through some options, extended equipment functions can be retrofitted. Due to the reduced burner power and the lower supply temperature (in diesel burner mode) – this system is often used, for example, for the shorter transport of raw chocolate products.