Cooling unit defrost function
Cooling unit defrost function
Heating in cooling units? Sounds paradoxical, but it is necessary: The defrost function plays an essential role in the efficient operation of refrigerators and freezers. This is where tailormade functional steel comes in handy.
The problem
Refrigerators, especially freezers, require integrated heating to prevent ice from forming or to defrost the unit as required. This is necessary for energy-efficient operation. Conventional heating technologies have traditionally been very susceptible to malfunction. Heating wires frequently burn out and result in costly maintenance and repair for equipment manufacturers.
The solution
The tfs heating function provides a remedy with a variety of practical advantages, specifically in thaw water channels: The thaw water can drain off through the channel without freezing again.
The shape of the channel poses a particular challenge. It is frequently a narrow strip with a width of 10 cm and can be up to 3 meters in length in industrial equipment. Very few heating systems are capable of achieving sufficiently homogeneous heat distribution across such lengths, but this is not a problem for tfs, a fact confirmed by the first product series.
With a power supply of 24 volts, the targeted temperature rise in the channel was from minus 30 °C to just above freezing. This was achieved homogeneously and without any problem for the entire length of the channel.
Fact check
- Functions: Heating system
- Temperature lift: > 30°C
- Operating voltage: 24 V
- Dimensions:
- Length = 781 / 1389 / 1562 / 2343 mm
- Width = 100 mm
- Diameter = 0.7 mm
- Surface: Protective coating