Heat tracing consists of two major design systems:

• Freeze protection or Winterization
• Tracing for Process Maintenance

Freeze Protection or Winterization
Freeze protection or Winterization is necessary to keep the fluid or product from freezing. Winterization is simple as compared to process maintenance. It is typically installed on pipelines, equipment, and other instruments where water or any other material having the same chemical composition, is exposed to frost or a freezing environment.

Freeze protection is a cost-efficient solution for building and infrastructure, which includes potable water system, roof and gutter heating, open space heating, and railway point heating systems.

Electric Heat Tracing for Process Maintenance
Electric heat tracing for process maintenance is a complex system that needs a carefully planned design consideration. This is typically used in industries where higher temperature must be maintained and accurate temperature control is required. Process maintenance helps keep the fluid from flowing freely along the pipelines.

In designing electric heat tracing for process maintenance, it is important to consider the flow paths or piping systems where the product flows through. This is an extensive process where the design and engineering team must determine the adequate number of heater circuits and control junctions needed to ensure equal distribution of heat throughout the pipelines. This method eliminates the risks of having hot or cold spots.

Electric heat tracing in process maintenance is also used to reduce the fluid viscosity of materials for LNG (Liquefied Natural Gas), food production and petrochemical industry. Other uses for electric heat tracing includes compensating for heat loss, preventing the formation of liquids in gas or powder lines and reducing the formation of solids in liquid pipes.

Electric Heat Tracing and Thermal Insulation
The combination of electric heat tracing and thermal insulation are a critical part of the overall heat tracing design. Therefore, choosing the right insulating material would best optimise the heat tracing system.

Each type of thermal insulator contains a different rate of thermal conductivity or K value. Using an inappropriate type of insulation may affect heat loss, which could lead to larger heat trace requirement and additional operating costs. With the right insulating material, heat loss can be reduced by half. This leads to reduced heat input, fewer cable lengths, heater circuits, control panels and power distribution needed.

Bellis Australia is a Queensland-based company that specialises in the manufacture, supply and installation of turnkey solutions for the oil and gas, resource processing, and power industries.

Bellis is a proud distributor of Eltherm Electric Heat Tracing Cables. Their extensive product knowledge and experience in various applications, including electric heat tracing and insulation makes them the company of choice for major specifiers and clientele both in Australia and overseas.

Contact Bellis Australia for a comprehensive discussion on electric heat tracing and thermal insulation today.