How can electric heating tubes save electricity
Many friends who do not know about electric heating tubes think that the voltage of electric heating tubes is small to save electricity, in fact, the electricity consumption of electric heating tubes is not related to the voltage of electric heating tubes, but to the power of electric heating tubes. Normally, it is one kilowatt per hour of electricity.
So the answer to the question of whether the voltage of the electric heating tube can save electricity is that this is not necessarily, small power saves electricity, and large power wastes electricity.
DC heating tube is a pure resistance load, can not be added voltage regulator can save power, to save power only to control its amount and find a way to reduce heat loss. In case you want to control its heat generation, when you need small heat, you can use a transfer switch to connect every 2 heating pipes in series, and when you need large heat, it is converted into parallel. Voltage regulation with a voltage regulator can also be controlled, but the power is too large, and the cost of the regulator is too high to be cost-effective.
Recently, I have received many friends who have not used electric heating tubes to call to consult electric heating tubes, and the most impressive question is to ask the power of electric heating tubes is so large and electricity-consuming, then my answer is definitely to say: Yes. We should know that friends who know about electric heating tubes should know that the use of electric heating tubes is normally 1KW one degree of electricity, but this friend's theoretical idea came out, he said: can you save electricity by reducing the voltage of the electric heating tube, and at the same time can also extend the service life of the electric heating tube? It is estimated that many friends who do not know much about electric heating tubes will have similar ideas, so today I will analyze with you, can reducing the voltage of electric heating tubes save power and extend the service life? Let's give an example, 220V/3000W electric heating tube, connected to the power supply voltage of 120V, what will happen after use?
The voltage, power, and resistance of the electric heating tube are related, and resistance = voltage * voltage/power.
According to the formula: power = voltage * voltage / resistance, we know that the resistance value of the electric heating tube is fixed after it is done.
So 220V*220V/3000W=16.1Ω, so when we connect the power supply voltage to 120V, what will happen?
By the above formula:
120V*120V/16.1Ω=894W, at this moment we found that the power is 3 times smaller, the power becomes smaller will lead to a decrease in the surface load of the heating tube, the heat of the heating tube is reduced, and the surface temperature is reduced, so that the heating tube does not heat up phenomenon.
So we found that reducing the voltage of the electric heating tube can achieve the effect of power saving, but at the same time, it also reduces the power of the electric heating tube, so that the temperature of the electric heating tube is reduced, then the effect of electric heating tube heating is lost, and the essence is to reduce the service life of the electric heating tube.
