What is the difference between Immersion electric heating element and air dry heating element?
Electric heating tube is mainly divided into two categories, liquid electric heating tube and dry electric heating tube.Most of the time they have the same shape, so what is the difference between the liquid electric heating tube and the dry electric heating tube?
First, the difference in appearance:
Immersion electric heating element is more threaded single head electric heating pipe, U-shaped or special-shaped electric heating pipe with fasteners, and flange electric heating pipe, etc.
Dry air electric heating element is more common is a single head straight rod electric heating tube, no fasteners U-shaped or special-shaped electric heating tube, fin electric heating tube and a very few flange electric heating tube.
Two, the difference of power design:
1, The power of Immersion heating element is designed according to the heating medium
The heating water shall be heated with 3KW power per meter of the length of the heating area of the electric heating tube. The power shall be about 2KW per meter for heating corrosive liquids and water with hard water quality and easy scaling.
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 electric heating tube is based on the flow of the heated air to determine the design of power.
The dry-fired electric heating tube is designed at 1 kW per meter for heating in an enclosed space.
In the flowing space, the electric heating tube with fan circulation is designed with a power of about 1.5KW per meter.
the material selection is different:
1. Liquid electric heating tube
oil
304 stainless steel is normally used for oil heating, but some are used for experiments. Customers who pursue low cost can also use carbon steel.
water
Stainless steel 304 is used for heating tap water, and stainless steel 316 is used for drinking water. If the water is cloudy or the water with more impurities can be heated, anti-scale coating electric heating tube can be used.
Corrosive liquid alkaline acid is relatively low, weak corrosive liquid can choose stainless steel 316 material.
2, dry electric heating tube if not long-term use, do the test, can use carbon steel material.
The working temperature is between 100 and 300 degrees. 304 stainless steel is recommended.
The working temperature is 400-500 degrees, stainless steel 321 material is recommended.
Working temperature in 600-700 degrees, recommended to use 310S stainless steel material.
If the working temperature is around 700-800 degrees, it is recommended to use English imported material.
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. Knowing how to distinguish the liquid electric heating tube and the dry electric heating tube can help us quickly choose the electric heating tube suitable for us.
