How does the US CHROMALOX electric heater work?
Issuing time:2018-09-27 11:25
The American CHROMALOX electric heater refers to an electric appliance that uses electric energy to achieve a heating effect. It is small in size, high in heating power, widely used, intelligent control mode, high temperature control accuracy, and can be networked with computers. Wide application range, long life and high reliability. At the heart of the heater principle is energy conversion, which is widely used to convert electrical energy into heat.
The working principle of American CHROMALOX electric heater:
For example, an electric heater uses metal to generate eddy currents in an alternating magnetic field to absorb heat itself, which is converted into light energy; for example, a solar water heater that absorbs solar radiant heat energy and sunlight light energy (photoelectric effect) into heat energy. Both; bioenergy is an energy stored in the form of chemical energy by a living organism, which is directly or indirectly derived from the photosynthesis of plants. In addition, there are nuclear energy, wind energy energy conversion modes, but generally need to be converted into electrical energy use.
Note on the US CHROMALOX electric heater:
1. Components are allowed to work under the following conditions:
A. The relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas (except for explosion-proof heaters).
B. The working voltage should not be greater than 1.1 times the rated value, and the outer casing should be effectively grounded.
C. Insulation resistance ≥ 1MΩ Dielectric strength: 2KV / 1min.
2. The electric heating pipe should be positioned and fixed. The effective heating zone must be completely immersed in liquid or metal solid. It is strictly forbidden to burn. When it is found that there is scale or carbon on the surface of the pipe body, it should be cleaned and reused in time to avoid heat dissipation and shorten the service life.
3. When heating fusible metal or solid nitrate, alkali, bitumen, paraffin, etc., the voltage should be reduced first, and the medium can be raised to the rated voltage after the medium is melted.
4. When heating the air, the components should be evenly arranged, so that the components have good heat dissipation conditions, so that the flowing air can be fully heated.
5. Safety measures should be taken when heating nitrate to prevent explosion accidents.
6. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media and moisture. The lead wire should be able to withstand the temperature of the wiring part and the heating load for a long time. When the wiring screw is tightened, avoid excessive force.
7. The components should be stored in a dry place. If the insulation resistance is less than 1MΩ for a long time, it can be dried in an oven of about 200 °C, or the voltage can be heated and heated until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet end of the electric heating pipe is protected from the infiltration of pollutants and moisture in the place of use to prevent the occurrence of electric leakage accidents.
9. Non-workers please operate in a hurry.
Daily maintenance of the US CHROMALOX electric heater:
1. After the heater has been running for a period of time (according to the user's usage), the ignition plug should be unscrewed to clean the carbon deposit. If the ignition plug is blown, the new ignition plug should be removed.
2. If there is too much carbon and the thermal efficiency is reduced, the heat sink inside the water jacket and the carbon in the combustion chamber should be cleaned.
3. If it is found that the exhaust pipe and the drip pipe of the heater main unit are blocked by mud, please clean up and dredge in time. Please keep the heater compartment clean and avoid placing flammable debris around it.
4. Ensure that the fuel tank, oil pipe and oil filter solenoid valve are clean to prevent dirt from clogging the oil circuit.
5. The antifreeze solution suitable for the ambient temperature should be used as the circulating heating medium in the heater circulation system.
6. The US CHROMALOX electric heater water pump should be inspected regularly according to the user's usage. If it is found that the water seal component of the sealing function leaks water, or the pump starts to run difficult, it should be repaired in time.
7. The automatic control box, filter oil electromagnetic rice and other electrical components on the heater main unit are maintained according to the general low-voltage electrical maintenance method. The performance parameters of the automatic control box are carefully debugged by the manufacturer before leaving the factory, and the user must not arbitrarily change it.
8. Ensure that the thermal control is in good condition and check regularly. If the micro switch is found to be malfunctioning or damaged, please replace it in time.
9, the United States CHROMALOX electric heater used in the main motor, under normal circumstances, the use of 5000 hours does not require maintenance, if the use of too long or other reasons caused by abnormal work, should be repaired, check carbon brush wear or bearing lubrication In case, add grease or replace the carbon brush if necessary.
10. During the warm season without using the heater, please start it 4-5 times regularly, and run it for about 5 minutes each time to ensure that the heater will work normally in the next use.
1. The "vortex hot film heat exchanger" is inserted into the bottom of the oil tank along the radial direction of the storage tank. The heat medium (steam) is taken away from the pipe, the oil flows from the shell to the inner tube, and the casing suction port directly communicates with the tank. Internal medium.
2. A temperature control valve is arranged at the steam inlet of the heat exchanger, and the temperature of the oil outlet is detected by the temperature sensing probe to control the steam inlet steam of the heat exchanger, thereby ensuring the constant temperature of the oil.
3, the United States CHROMALOX electric heater uses high-efficiency heat exchange components - eddy current hot film tube to keep the oil flowing between the tubes reasonably, the thermal efficiency is 3-5 times that of ordinary heat exchangers, the heat transfer mechanism is: oil fluid Designed as turbulent flow when flowing on the inner and outer surfaces, resulting in strong oscillating and scouring action, the direction of flow is constantly changing, the high temperature oil fluid close to the surface of the pipe wall is constantly changing, the heat insulation layer is thinned and destroyed, and the heat of the metal surface is The transfer is accelerated, and the microscopic eddy current of the fluid is strengthened to enhance the thermal diffusion inside the oil fluid. It does not cause local high temperature overheating of the fluid close to the surface of the pipe wall, so that the oil can be properly and fully heated without the possibility of coking decomposition. The heat transfer is good and the resistance is not great.
Heating characteristics of American CHROMALOX electric heater:
1. The heating speed is fast, the heat transfer efficiency is high, and it is not easy to scale.
2, can quantitatively heat the oil, how much heating is needed.
3. The oil will not have local high temperature and carbonization, which ensures the quality of the oil and the heat transfer efficiency of the heater.
4. The oil outlet temperature in the tank is high, which ensures the fluidity of the oil.
5, to avoid repeated heating of the oil in the tank, to ensure the color of the oil, reduce the cost of oil processing.
6, long service life, corrosion resistance, high temperature resistance, high pressure resistance, anti-fouling function, greatly improving the overall performance of the heat exchanger.
7. The advanced design of the process structure ensures the smooth outflow of oil products and the better “sucker bottom” function.
8, can achieve automatic control, according to the oil inlet and outlet temperature and oil flow rate to control the steam feed.
9. Compact structure, convenient installation and maintenance, and will not affect the safety of the tank due to the installation of the heater. Compared with the U-tube heat exchanger, in the case of the same heat exchange area: the size of the vortex hot film heat exchanger is only about one-half of the outer dimensions of the U-tube heat exchanger.
10. Relative to the electric heating method, it is safer, the heating is milder, and the impact on the quality of the oil is smaller.