In the cold winter, the fire protection pipes in shopping malls face severe tests. Low temperature will not only affect the service life of the pipes, but also cause the water in the pipes to freeze, thus affecting the normal operation of the fire protection system. In order to ensure the fire safety of the shopping mall, the electric heating system can be used to prevent freezing and heat preservation of the fire protection pipes in the shopping mall.

1. Necessity of electric heating system

Prevent pipe freezing: In the severe winter, the fire protection pipes in the shopping mall are easily affected by low temperature and freeze. Once the pipe freezes, it will hinder the water flow, affect the normal water supply of the fire protection system, and bring hidden dangers to the fire safety of the shopping mall.

Improve the service life of the pipe: In a low temperature environment, the pipe material is easily damaged, leading to problems such as pipe aging and corrosion. By using an electric heating system, the pipe temperature can be maintained, the aging speed of the pipe material can be slowed down, and the service life of the pipe can be extended.

2. Features of electric heating system

Prevent pipe freezing: In the severe winter, the electric heating system provides a continuous and stable heating effect for the fire protection pipe, ensuring that the temperature in the pipe is always maintained within the set range, preventing the occurrence of pipe freezing.

Ensure the normal operation of the fire protection system: The electric heat tracing system can ensure the normal operation of the mall's fire protection system in winter, providing a strong guarantee for the mall's fire safety. Improve the service life of the pipeline: By using the electric heat tracing system, the service life of the mall's fire protection pipeline has been extended, reducing the maintenance and replacement costs caused by pipeline aging, corrosion and other problems.

Electric Tracing System: Components and Working Principle

Many customers are familiar with electric tracing systems for insulation, but most are unaware of their components and working principles. Below is a detailed introduction.

Components of an Electric Tracing System

1. Explosion-Proof Power Connection Box

   • Ensures safe wiring of the electric heating cable.

   • The quality of terminals directly impacts the system's safety and operational continuity.

2. Explosion-Proof Intermediate Connection Box

   • Primarily used for connecting heating cables in complex relay lines.

   • Can function as a power connection box if the usage limits are not exceeded.

3. End-Sealing Connection Box

• Used for terminating self-regulating heating cables.

• The other end is sealed with this box, and heat-shrink tubing must be applied.

• Important: Never connect the two ends of the heating cable or parallel bus bars directly.

1. Aluminum Foil Tape

   • Expands the heating surface of the cable, improving thermal distribution and efficiency.

2. Thermal Adhesive Tape

   • Secures the heating cable to pipes or equipment.

   • Stainless steel zip ties may also be used for fixation.

3. Warning Labels

   • Affixed to the outer surface after installation as a safety reminder and power indicator.

Working Principle of Electric Tracing

The principle is straightforward: Heating elements are installed between the insulation layer and the object to be heated. During operation, these elements maintain the target temperature, ensuring fluids or equipment remain within the desired range.

• In Low-Temperature Environments:
  The conductive polymer expands, reducing current flow and heat output, thus stabilizing the temperature.

• In Overheating Conditions:
  The polymer expands significantly, nearly cutting off all current and minimizing heat emission.

This self-regulating mechanism ensures efficient insulation. When temperatures exceed limits, heat generation ceases automatically.

Key Notes

• Always follow safety guidelines during installation.

• Proper component selection ensures system reliability and longevity.