Longline Heating

Heating long pipelines for freeze protection, viscosity control, or temperature maintenance presents special requirements for electrical heat-tracing. These applications often require significant electrical loads, often with a single electrical power point. Tyco Thermal Controls provides a wide range of industry-proven solutions for these applications. Extreme long lines are usually transfer lines between processing plants or to storage or transportation facilities. Tank farms, piers for ocean transport vessels, and pipes between petrochemical facilities are all examples of applications for which long line heat tracing may be used. Even if a processing plant uses steam for in-plant heat tracing, electrical tracing may be beneficial for the transfer lines.

• PI (polymer insulated) heating systems are especially suitable for longer heating circuits (i.e. >250 m) and can be used for temperatures up to 300°C. Similar parallel heating cables, PI systems can be terminated in the field.
  
  
• MI (mineral insulated) heating systems are especially suitable where higher temperatures (>250°C) or high power outputs are required. For longer heating circuits, various sheath materials are offered for temperatures even up to 600°C. MI systems can't be easily terminated in the field, connections must be prepared in a shop or preferably factory assembled.
  
  
• STS (skin-effect tracing) heating systems are custom engineered for each application and are typically used for lengths between 1 and 25 km from a single power source.

Long line heat-tracing systems should be designed with engineering support from Tyco Thermal Controls to select the most appropriate technology and provide a fully reliable system for a long service life.

Heating Cable -- Constant Wattage Parallel Circuit FHT2 Constant Wattage Parallel circuit heating cable Field-terminated FHT4 Constant wattage parallel circuit heating cable Field-terminated FMT Constant wattage parallel circuit heating cable Field-terminated Heating Cable -- Mineral Insulated (MI) Series heating cables HCH/HCC Mineral Insulated copper heating cable HDF/HDC Mineral Insulated (MI) Cupro-Nickel heating cables HIQ Series Constant Wattage MI – Factory-terminated elements or bulk cable HSQ Series Constant Wattage MI – Factory-terminated elements or bulk cable Heating Cable -- Parallel Power-Limiting VPL Parallel power-limiting – Field-terminated Heating Cable -- Parallel Self-Regulating BTV Parallel self-regulating – Field-terminated KTV Parallel self-regulating – Field-terminated QTVR Parallel self-regulating – Field-terminated XTV Parallel self-regulating – Field-terminated Heating Cable -- Polymer Insulated (PI) Series XPI Polymer Insulated (PI) Series Resistance Heating Cable (ATEX, 4 joule) XPI-NH Polymer Insulated (PI) Series Resistance Heating Cable (non-hazardous areas) XPI-S Polymer insulated (PI) series resistance heating cable (ATEX, 7 joule) Heating Cable -- Series Constant Wattage Skin Effect STS Series Constant Wattage STS – Factory-terminated