What is the warming of resistance?

Resistance heating is a process in which thermal energy is produced by passing electric current through a special -purpose conductor. The resistance that the conductor offers for the passage of the current causes a reaction to the atomic level, thus producing energy and releasing heat. This reaction is subject to a scientific relationship known as Joule's first law, which sees the amount of heat generated by a process depending on the balance between the resistance of the conductor and the current size. Resistance heating is one of the most commonly used forms of heat generation and is located in a wide range of domestic and industrial applications. Heating of resistance is the product of all circuits where the electrical current encounters resistance; Although it has many beneficial uses, it can damage or destroy electrical devices if not controlled.

Anyone who used a kettle, toaster or bar Heater in a cold evening became acquainted with the heating of resistance. Effects of heating resistance PIn the middle of the 18th century, James Prescott Joule recorded, and this phenomenon quickly became the cornerstone of one of the most widely used forms of heating of all time. The basic principle of resistance heaters concentrates around the reaction that has caused the electrical current of the electrons encounters the ion structure of the conductor. The electron/ion collisions that result in see part of the energy of accelerated electrons released in the form of thermal energy. If the current or resistance of the conductor increases, the generated amount of heat will also be.

Heating resistors are most often the form of a coil or spiral or a specially designed resistance wire built into a heat -resistant, insulating substrate. Most of the heating elements of the resistance are of this type, with the most common insulators are materials such as high alumin ceramics. The mospoly combination of metal metals in the production of wire used in heating of resistance is the alloy of nickel and chrome. The average composition of these alloys takes place between 60/16% for general use and 80/20% for spiČkova wires. The Nickel Chrome 60 alloy is the most widespread of these two and can withstand temperatures of 1850 ° F (1000 ° C) without sagging or deformation.

Although heating of resistance is obviously beneficial, the phenomenon may have disastrous effects on an uncontrolled phenomenon. All electrical wires generate heat to some extent; When circuits or equipment overload, generated heat can seriously damage or even destroy the device. Electric fires are also a common result of uncontrolled resistance heating.