Electrical heat tracing prevents the formation of condensate on the silo
... and thus keeps the sugar free-flowing.
The quality of the sugar stored can be significantly impaired by condensation. To prevent the formation of condensation and keep the sugar free-flowing, it is essential to heat the silo shell so that the temperature remains constant.
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To keep the sugar at a constant storage temperature of approx. 20 °C, the electric silo shell heating is used and installed on the sugar silo, including the control panel.
The silo wall heater is an additional heater for the silo shell. It is primarily used to prevent the silo body from cooling down due to weather-related cold outside air or one-sided wind conditions. By heating the outer silo shell (the area between the actual silo shell and the outer insulation), the formation of thermal bridges between the product placed in the silo and the outer shell is avoided.
The electric silo shell heating is installed onto the outer silo shell in the form of resistance cables laid in several loops and covered with a special self-adhesive foil over its entire surface. The heating cables are installed around the silo body in independently switched heating loops. In addition to the heating circuits installed, the entire silo shell is heated in different sections. The multiple routing of the heating loops per heating circuit has the purpose of compensating for any malfunction in the event of separate heating loops failing by means of the two neighbouring heating cables. This ensures that even if one heating loop of the silo body fails, the section concerned can be sufficiently heated (redundancy). The separation of sectors also allows individual areas of the silo body to be heated (if required). This can be helpful, for example, in case of strong one-sided winds that only partially cool down the silo body.
The control of the individual heating circuits, which are located at the bottom of the silo body together with the cable routes and channelled centrally into the control room, is carried out via a control panel from where the individual heating circuits can be activated or deactivated.
Temperature sensors are installed in certain areas to control the temperature of the silo body. In the event of overheating, these sensors will switch off the entire system completely or partially.
However, eltherm not only supplies the electrical heat tracing system, which is necessary to keep the temperature in the sugar silo at a constant level and prevent condensation, but also the technical design, engineering as well as the installation and commissioning of the entire system. This means that your heating requirements are precisely calculated in advance and the heating system is configured accordingly. A special control system ensures that all temperatures are precisely maintained. In addition, precise control minimises energy consumption so that the trace heating system operates particularly efficiently.
- Precise calculation of the heat requirements and corresponding configuration of the system.
- Redundantly designed system compensates for malfunctions of individual heating circuits.
- Precise control reduces energy consumption.
- All from one source: everything from technical design to commissioning and maintenance.
Used products
ELKM-AG-E
This versatile heating cable is used for frost protection and temperature maintenance, even under highly corrosive…
FAQ
If the dried and dissolved sugar crystals subsequently become moist, they can clump together. The moisture in the air is enough to cause this. The clumped sugar crystals make the further production process more difficult, which is why condensation and thus increased humidity on and in the silo must be avoided.
The silo wall heater prevents the silo wall from cooling down due to cold outside air or one-sided wind conditions. This prevents condensation and ensures that the stored sugar does not absorb moisture. As a result, the quality is maintained and the sugar does not clump together.
As sugar tends to clump together and therefore immediately loses quality, it must be protected from moisture. If the sugar is no longer free-flowing, the processes are severely disrupted. To avoid condensation on the sugar silo, it is necessary to keep the temperature constant. This is where electrical heat tracing is used, which guarantees constant temperatures thanks to precise control technology.
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