Resistance heatingA heating method that uses electric current to pass through an electric heating element to release heat for heating the billet. Common resistance wire heating, ceramic heaters, resistance coil heating, and quartz tube heating are all based on the principle of resistance heating.
Comparison
1.
Resistance heaters are the most primitive, so their thermal efficiency is the worst, usually only about 70%, with a large amount of heat dissipated into the air.
2. Infrared heating is slightly better than resistance heating, but still a large amount of heat is dissipated into the air, not from the infrared itself, but from the heated object.
3. Feiru electromagnetic heaters have a layer of insulation that wraps around the heated object, and the magnetic field directly heats the object itself through the insulation layer, so the thermal efficiency is the highest, with almost no heat loss, exceeding 95%. Moreover, because the Feiru electromagnetic heater heats the object itself, there is no heat transfer loss, saving 30%-70% energy compared to resistance heating under the same conditions. Infrared heaters cannot be compared in detail with electromagnetic heating due to their heating characteristics, but based on the temperature emitted, under the same conditions, Feiru electromagnetic heating should save more than 20% energy compared to infrared heating. Oil tank heater
Oil tanks play a very important role in the storage and transportation of oil and gas. In oil storage, oil tanks are mostly used for storing oil products. When oil is needed, it is output from the tank. During the output process, a common problem is that the oil becomes viscous due to low temperature, reducing its fluidity and preventing smooth output. Therefore, an oil tank heater is needed
[3Working Principle
1. Insert the "eddy current heat film heat exchanger" radially into the bottom of the oil tank along the tank wall. The heat medium (steam) flows through the tube side, and the oil flows between the tubes on the shell side. The shell
Local rapid heater for oil tank
oil suction port is directly connected to the medium in the tank.
2. A temperature control valve is installed at the steam inlet of the heat exchanger. The steam inlet flow is controlled by detecting the oil outlet temperature with a temperature probe, thereby ensuring a constant oil temperature.
3. The heat exchanger uses high-efficiency heat transfer elements—eddy current heat film tubes—to maintain reasonable oil flow between the tubes. The thermal efficiency is 3-5 times that of ordinary heat exchangers. The enhanced heat transfer mechanism is: the oil fluid is designed to flow in a turbulent manner on the inner and outer surfaces, generating strong oscillation and scouring effects. The flow direction constantly changes, continuously replacing the high-temperature oil fluid near the tube wall, thinning or destroying the insulation layer, accelerating heat transfer from the metal surface, enhancing microscopic eddy currents, and strengthening internal heat diffusion in the oil fluid. It does not cause local high-temperature overheating of the fluid near the tube wall, so the oil can be properly and fully heated without coking or decomposition. It has good heat transfer and low resistance.
Heating Characteristics
1. Fast heating speed, high heat transfer efficiency, not easy to scale.
2. Can heat a specific amount of oil as needed.
3. No local high temperature or carbonization of oil, ensuring oil quality and heat transfer efficiency.
4. The oil outlet temperature in the tank is the highest, ensuring fluidity of the output oil.
5. Avoids repeated heating of the oil in the tank, ensuring oil color and reducing oil processing costs.
6. Long service life, corrosion resistance, high temperature resistance, high pressure resistance, anti-scaling function, greatly improving the overall performance of the heat exchanger.
7. Advanced process structure design ensures smooth oil flow and good "tank bottom pumping" effect.
8. Can achieve automatic control, adjusting steam supply based on oil inlet/outlet temperature and flow rate.
9. Compact structure, easy installation and maintenance, does not affect tank safety due to heater installation. Compared with U-tube heat exchangers, under the same heat exchange area, the external dimensions of the eddy current heat film heat exchanger are only about half of those of a U-tube heat exchanger.
10. Safer than electric heating, gentler heating, and less impact on oil quality.
