How much electricity can be saved by electromagnetic heating?

Third-party energy conservation companies or energy conservation audit companies.

Electromagnetic heating is the use of internal heating mode, heating the body parts of the direct induction of magnetic energy and heat, the average preheating time is shorter than the resistance circle heating method 2 3, while the thermal efficiency is as high as 95%, under the same conditions, than the resistance circle heating power saving 30-70%.

The principle of electromagnetic heating is to generate alternating magnetic field through the components of the electronic circuit board, when placed on top with an iron-containing container, the surface of the container has the current (i.e., eddy current) that produces the alternating current (i.e., eddy current) in the metal part of the bottom of the container that cuts the alternating magnetic field lines that cut the magnetic field lines at the bottom of the container, and the eddy current makes the iron atoms at the bottom of the container move irregularly at high speed, and the atoms collide with each other and rub against each other to produce heat energy. Thus having the effect of heating the item. Because it is an iron container that heats itself, all heat conversion rates are particularly high, with a utilization rate of more than 95%, and the heating part adopts a special cable structure, the heating cable itself will not produce heat, and can withstand a temperature of more than 500, and the service life can reach more than 5 years.

It avoids the drawbacks of frequent maintenance and regular replacement of the heating ring for resistive heating, and there is basically no maintenance cost in the later stage of this product.

Comparison of various data before and after the electromagnetic heating transformation of clinker machinery: Figure (1) Comparison of data before and after the electromagnetic heating energy-saving transformation of the clinker industry (2) The above ** Comparison of data before and after the electromagnetic heating energy-saving transformation of the clinker industry by Keyi Thermal Technology clinker.

The amount of electricity saved by the electromagnetic heater should have an accurate reference, and the transformation of plastic machinery is generally more than 20% according to the injection molding machine, and about 40% of the washing material granulator, and the power saving of different mechanical equipment is different.

After the energy-saving transformation of electromagnetic heating of Xinhuiyuan injection molding machine.

After the energy-saving transformation of electromagnetic heating of Xinhuiyuan granulator.

Electromagnetic heating has no scale, high thermal efficiency conversion, high electrical energy utilization rate, long service life, such as northern electromagnetic, resistance heating is traditional heating, large heat loss, short service life, large maintenance: due to the use of resistance wire heating, its heating temperature is as high as about 300, resistance wire is easy to burn out due to high temperature aging.

First of all, most of the plastic mechanical heating equipment is heated by the heating ring, and the principle of heating the heating ring is to use the heat transfer method, but only the temperature that touches the inner part of the heating ring is transmitted to the barrel, and the temperature of the outer part of the heating ring is emitted into the air. Therefore, in the ideal state of the heating ring heating method, only 50% of the heat energy is transferred to the barrel, and the other 50% is transferred to the air, resulting in waste. The part of the electromagnetic heater to save electricity is the 50% of the heat energy lost in the air, so the electromagnetic heater can achieve the ideal state at most that it can save 50% of electricity, but everything can not reach a perfect state, so the general electromagnetic heater power saving rate is about 40%.

Jiangxin Electromagnetic.

In the 19th century, the English physicist Faraday and the Danish natural philosopher Oster discovered that the relationship between electricity and magnetism was extolled, and proved that electricity can generate magnetism, and magnetism can generate electricity. Whether it is magnetically or electromagnetically, the object targeted must have good characteristics of conductivity, magnetism, or both conductivity and magnetism. Therefore, we often say that the load of electromagnetic heating must be iron, and after heating through iron, the heat is transferred to other required objects to achieve the temperature we need.

Electromagnetic heating manuscript arrester is a kind of equipment that turns electrical energy into magnetic energy, and then induces magnetic energy to heat the heating body itself. When the heating load (i.e., the heating barrel) is subjected to high-speed alternating magnetic field lines, the heating barrel itself will heat up rapidly on its own. The loss in the process of energy transfer is very small, and the heating efficiency is as high as more than 95%.

Or should be an objective look at electromagnetic heating and all heating methods, can not blindly say that the use of electromagnetic heating on the power saving or other heating methods will not save electricity, this seems too arbitrary, the specific depends on the specific application, whether it is power-saving This is relative, to see whether the original heating method wastes electricity, whether there is enough space to save energy, and whether the electromagnetic heating method is suitable for your application, the specific problem needs specific analysis, If you have any questions about a variety of different applications, you can consult Xiamen Xinrui directly.

Of course, the electromagnetic heater has a good energy-saving effect, and it is one of the most advantageous heating methods on the market at present.

Principle of electromagnetic heater.

An electromagnetic heater is a device that converts electrical energy into heat energy using the principle of electromagnetic induction. The electromagnetic controller will rectify the 220V 380V, 50 60Hz alternating current into direct current through the rectifier circuit, and then convert the direct current into a high-frequency current of 10-40kHz through the control circuit, the current will produce a changing alternating magnetic field through the coil, when the alternating magnetic field lines in the magnetic field pass through the permeable metal (iron, cobalt, nickel) material, it will produce countless small eddy currents in the metal body, so that the metal material itself will heat up at high speed, so as to achieve the purpose of heating the metal material.

The inverter is the core component of the high-frequency electromagnetic heater, which is an electric energy control device that converts the power supply of the power frequency into another frequency by using the on-off effect of the power semiconductor device. At present, the inverter used mainly adopts the AC-DC-AC mode, which converts the power frequency AC power supply into DC power supply through the rectifier, and then converts the DC power supply into AC power supply that can be controlled by frequency and voltage to supply the motor. The circuit of the inverter is generally composed of four parts: rectification, intermediate DC link, inverter and control.

The rectifier part is a three-phase bridge uncontrollable rectifier, the inverter part is an IGBT three-phase bridge inverter with a PWM waveform, and the intermediate DC link is filtering, DC energy storage and buffered reactive power.

Advantages of electromagnetic heating.

High efficiency and energy saving, accurate temperature control, long life, improve the working environment, safe and reliable use of internal heating mode, heating parts of the body directly induce magnetic energy and generate heat, hot start is very fast, the average preheating time is shortened by more than 60% compared with other heating methods, the thermal efficiency is as high as 97%, and the energy saving is 30%-70% under the same conditions. The electromagnetic ring part adopts a ring cable structure, the cable itself will not generate heat, the thermal resistance is small, the thermal inertia is low, the temperature of the outer wall of the heating body is consistent, the temperature control is real-time and accurate, and can withstand more than 500 high temperatures, and the service life is up to 10 years. The surface temperature of the equipment can be improved to the touch of the human body, which improves the working environment of the production site, effectively improves the enthusiasm of production workers, and reduces the cost of ventilation and cooling in the factory area in summer.

The electromagnetic coil has good insulation performance, and does not need to be in direct contact with the outer wall of the heating body, which is safer for heating.

The traditional heating industry, the general use of resistance wire and quartz heating mode, and this traditional heating method, its thermal efficiency is relatively low, resistance wire and quartz mainly rely on electricity, self-heating and then transfer the heat to the barrel, so as to play the effect of heating items, the heat utilization rate of this heating effect is only about 50% at most, the other 50% or so of the heat is dissipated into the air, and the electrical energy loss of all traditional resistance wire heating methods is as high as more than 50%. And through electromagnetic induction heating, it is through the current to generate a magnetic field, so that the ferrous metal pipe itself heats, coupled with the heat insulation material, to prevent the heat dissipation of the pipeline, the heat utilization rate is as high as more than 95%, theoretically the intermittent power-saving effect can reach more than 50%, but considering that the energy conversion efficiency of the electromagnetic induction heating controller of different qualities is not the same, as well as different production equipment and environment, the effect of all electromagnetic heating energy saving can generally reach at least 30%, and the maximum can reach 70%. The current electromagnetic induction heating equipment is as high as more than 95%, and some power is relatively high to more than 98%.

The cost of electromagnetic heating is very high, and the actual power-saving effect is not obvious, which is a product of the response to the national energy conservation and emission reduction policy.

Our company has used, is used in the reactor, has been using gas, but also used heat conduction oil, and later switched to the use of Xianfeng electromagnetic heater, the boss carefully calculated that each pot of material out of the pot can save about 500 yuan. It's quite convenient, and it also saves a boilermaker. I don't know what device you're using, but it's a good way to heat and really save electricity.

Depending on the situation, under the same working state, electromagnetic heating is more energy-saving.

The heating rod is more efficient according to the physical properties.

The difference between electromagnetic heating and resistance heating is that electromagnetic heating has a high efficiency, while resistance heating has a lower efficiency than electromagnetic heating, but resistance heating is more energy-efficient.

In terms of power saving, it is electromagnetic power saving, which can be seen from the thermal efficiency. For example, the heat energy of 1 kWh of electricity is 10, and the resistive heat conversion is only a few 8 points, while the electromagnetic one can reach more than that.

Miscellaneous. 1. Security.

Induction Heating Stove:

1. Electromagnetic induction heating, water and electricity separation.

2. Low-voltage soft start, reduce the harm of current surge impact, avoid damage to equipment due to voltage fluctuations, and ensure safety.

3. The variable frequency power output part can automatically adjust the current size according to the voltage fluctuation to ensure constant power.

Resistance Heating Stove:

1. Resistance heating, conducted through the heat conduction medium, is not the separation of water and electricity, and there is a potential safety hazard of leakage.

2. The relay directly supplies power to the resistance rod, and the impulse current is large.

2. Structural design.

Electromagnetic heating furnace: the structure of the whole machine is separated from the waterway and circuit, the structure is reasonable, and the safety is high.

Resistance heating furnace: the whole machine water and electricity are not separated, and the safety hazard is large.

3. Service life.

Electromagnetic heating furnace: industrial-grade electromagnetic, high-temperature resistant wire, used for more than 15 years.

Resistance heating furnace: resistance wire is easy to age and has a short lifespan, generally 3 to 5 years.

Fourth, mute. Electromagnetic heating stove: the frequency of the heating power supply is 20kHz, which exceeds the normal listening frequency of the human body, and is silent and environmentally friendly.

Resistance heating stove: power frequency power supply works there"Buzz"When the surface water temperature is high, there are bubbles to produce the sound of boiling water.

5. Maintenance. Induction heating furnace: The core component of electromagnetic induction heating is a fixed magnetic field, and the water is magnetized after passing through, and the water structure is magnetized, and the system is maintenance-free.

Resistance heating furnace: The resistance wire is generally replaced once every 3 to 5 years, and because of the scale generated, it should be descaled regularly.

The heating efficiency of the traditional resistance wire heating method is about 40, and the other energy is consumed in heat conduction and air heat convection. The thermal efficiency of electromagnetic induction heating technology can reach 90, which doubles the heating efficiency.

Yes, the heat transfer process is reduced, and the direct action with the heated body is faster, the temperature is lower, the temperature is safer, and most importantly, the energy saving !!

The normal is more than 30%, and the machine that is too small is only about 25%.