Electric heating tube is mainly divided into two categories: liquid electric heating tube and dry-fired electric heating tube. In general, their shapes are similar, so let’s see what are the differences between the liquid electric heating tube and the dry-fired electric heating tube?
1. The difference in appearance: Liquid electric heating tube is more common with fasteners of U-shaped or special-shaped electric heating tube, and flange electric heating pipe, etc. Dry-fired electric heating tube is more common in the single head straight rod electric heating tube, no fastener U-shaped or special-shaped electric heating tube, fin electric heating tube and a very few flange electric heating tube.
2. The difference of power design: ① the liquid electric heating tube according to the heating medium to determine the design of power.Heating water: 3KW per meter of heating area length of electric heating pipe. Heating corrosive liquid and water whose water quality is hard and easy to scale: The power should be about 2KW per meter. The maximum power of heating oil is 2KW per meter, and the power of poorer and thicker oil is about 1KW per meter. ② dry-fired electric heating tube is based on the fluidity of the heated air to determine the size of the power: Dry-fired electric heating pipe used for heating in confined space, power should be 1 kW per meterThe power of the dry-fired electric heating pipe used in the air circulation space should be about 1.5 kW per meter.
3. The difference of material: ① Liquid electric heating tubeOil: Usually stainless steel 304 is used for heating oil, but some customers who are in pursuit of low cost for experimentation can also use carbon steel. Water: stainless steel 304 is used for heating tap water, stainless steel 316 is used for drinking water, and anti-scale coating electric heating tube can be used for heating murky water or more impurity water.Corrosive liquids:stainless steel 316 can be used for the liquid with low alkalinity/acidity and weak corrosion.
② dry electric heating tube: Carbon steel can be used if it is not needed for long-term use and is only used for testing purposes.Stainless steel 304 is recommended when the working temperature is between 100 and 300 degrees Celsius. Stainless steel 321 is recommended when the working temperature is 400-500 degrees Celsius.Stainless steel 310S is recommended when the working temperature is 600-700 degrees Celsius. When the working temperature is 700-800 degrees Celsius, it is recommended to use the imported material of English. From the above introduction, we can know that the dry electric heating tube and the liquid electric heating tube are very different in the shape design, power design and material selection. We know what the difference is between the liquid electric heating tube and the dry electric heating tube, which can help us quickly choose the electric heating tube suitable for us.
source: https://www.spldheater.com/news/what-are-the-differences-between-liquid-heating-tubes-and-dry-heating-tubes/
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