Frost heave prevention system

  • Overview
  • Product range
  • Documents

In cold stores, ice stadiums, etc. the temperature is always within the range of –20 and –30 °C, however cold leak occurs even if the floor is insulated properly. This means that materials which are in contact with the soil, such as foundation and floor areas, will absorb the cold and let the ground freeze. Water, contained in the soil, will change volume when turning into ice and can cause substantial damage due to frost erosion.

Danfoss offers reliable and energy efficient cable heating systems to prevent frost heave and ensure frost protection of doors drain lines and firefighting piping. Danfoss has supplied various range of such systems to 5 continents over many years.

Frost heave protection

The main object of heating in the frost  heave prevention system is to provide frost protection of foundation in premises where temperature is constantly maintained below zero (cold storages, ice stadiums, etc.).

Protection against condensation on floors

In doorways between cold stores and heated rooms condensed water may form on the floor: opening and closing of doors causes the constant shifts between cold and warm air. This can result in dangerous and operation-limiting ice formations on the floor or in the door opening and therefore, the floor in these areas must be heated.

Freeze protection of doors and gates

Typically frost protection systems are used for: sliding doors, swing doors, gates in car washes, doors in cold stores, roller edges in water treatment plants etc. The installed output for gates and doors of cold rooms is typically 15-20 W/m per each door seal. For swing doors and slide bars of outside gates, the installed output must correspond to the output used for ice and snow melting systems, e.g. typically 250-350 W/ m² (C-C = 7.5 cm).

Product range

Cables

  • ECflex10T

    ECflex™ is a fully screened twin conductor cable with a tough red PVC outer sheath, to install in a wide range of floor constructions and pipe tracing systems. It is easy to install; flexible, safe and robust. It has a long life-time and is covered by Danfoss 20 year warranty.

     

  • DEVIflex6T

    DEVIflex™ is an extremely high-quality, 360° fully screened twin conductor cable with a tough outer sheath (non UV stable). Its round profile and robust construction ensures a fast, simple and safe installation in multiple indoor floor constructions and pipe tracing applications.

  • DEVIflex10T

    DEVIflex™ is an extremely high-quality, 360° fully screened twin conductor cable with a tough outer sheath (non UV stable). Its round profile and robust construction ensures a fast, simple and safe installation in multiple indoor floor constructions and pipe tracing applications.

  • DEVIbasic10S

    DEVIbasic™ is a high-quality, braided screen, single conductor cable with a non UV stable outer sheath. Its round profile and robust construction ensures a fast, simple and safe installation in multiple indoor, outdoor and pipe tracing applications.

Thermostats

  • DEVIreg 330

    The DEVIreg™ 330 is an electronic thermostat to be installed in electric cabinets with DIN rail attachment. Used primarily for controlling a lower temperature range as by frost protection.

  • ECtemp330

    ECtemp 330 consist of 5 different thermostats – each with separate temperature ranges depending of the application where it will be used. The DIN rail thermostats can be used for various purposes.

Documents

Type Name Language Valid for Updated Download File type
Application guide Danfoss Cold Store Protection Systems Application manual English Multiple 22 Dec, 2016 5.5 MB .pdf