Abstract

How do scale and oil coke quietly ruin your heating equipment? Learn prevention and maintenance to double the service life of your equipment.

 

Main Body

In long‑running heating systems, an outer “shell” often forms on the surface of electric heating tubes – this is the culprit behind declining equipment efficiency.

 

The “Thermal Barrier Effect” of Scale

When heating hard water, calcium and magnesium ions precipitate and adhere to the tube wall. The thermal conductivity of scale is extremely low – only one‑tenth to one‑twentieth that of metal tubing. This not only

reduces thermal efficiency (wasting electricity) but also causes internal heat to accumulate, eventually leading to tube wall rupture.

 

Carbonization of Thermal Oil

In oil heating systems, if the oil temperature is too high or the flow rate is insufficient, the surface oil film undergoes thermal cracking, forming a varnish‑like carbon deposit. This carbon layer not only hinders heat

dissipation but also degrades the oil quality.

 

Modern Solutions

Specialty Coating Technology (2026): Our newly launched anti‑scale coated heating tubes utilize superhydrophobic surface energy technology, making it difficult for scale to adhere.

 

Large R‑Radius Bends

A larger radius is adopted at tube bends to reduce fluid dead zones and lower the probability of scaling.