1. What methods are currently used to remove scale from the surface of heat transfer tubes?
A: The common methods for descaling the surface of heat exchanger tubes are.
Mechanical scale removal: manual scaling of steel, pressure water scaling
chemical descaling
2. What are the methods to prevent scale on the surface of the heat exchanger tube?
A: (1) Nickel-phosphorus plating
(2) Chemical Coating, 847 Coatings
3. What are the common methods of enhancing heat transfer in heat transfer equipment?
A: The main methods of enhancing heat transfer in heat transfer equipment
One is the use of structures that increase the heat transfer surface, such as
1 Using finned pipe, nailhead pipe, threaded pipe, bellows, etc.
2 Mechanical processing of pipe surfaces: spiral ring pipe, spiral groove pipe, threaded pipe, etc.
3 small-diameter pipe, can increase the number of the same tube plate area on the cloth tube, increasing the heat transfer area
The second is to increase the flow rate of fluid in the heat exchanger, which can greatly improve its heat transfer coefficient, such as.
1 Increase the number of spoilers, e.g., insert a spiral belt in the tube, install a baffle plate outside the tube, dummy tube, etc.
2 to increase the number of pipe range or shell range.
In addition, the use of good thermal conductivity of the material to manufacture heat exchanger, heat exchanger anti-corrosion and anti-scaling measures, timely cleaning, etc. are means to improve the effect of heat transfer.